As filed with the Securities and Exchange Commission on July 1, 2002.
                                                Registration No. _______________
- --------------------------------------------------------------------------------
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                    FORM S-4
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                                   ----------

                           PARKER DRILLING COMPANY(*)
             (Exact name of registrant as specified in its charter)

<Table>
                                                                         
               DELAWARE                                1381                           730618660
   (State or other jurisdiction of         (Primary Standard Industrial            (I.R.S. Employer
    incorporation or organization)          Classification Code Number)         Identification Number)
</Table>

                              1401 ENCLAVE PARKWAY
                              HOUSTON, TEXAS 77077
                                 (281) 406-2000
               (Address, including zip code, and telephone number,
        including area code, of registrant's principal executive offices)



                                 JAMES J. DAVIS
          SENIOR VICE PRESIDENT OF FINANCE AND CHIEF FINANCIAL OFFICER
                              1401 ENCLAVE PARKWAY
                              HOUSTON, TEXAS 77077
                                 (281) 406-2000
 (Name, address, including zip code, and telephone number,including area code,
                             of agent for service)

                                    COPY TO:
                          LYNNWOOD R. MOORE, JR., ESQ.
                             CONNER & WINTERS, P.C.
                             3700 FIRST PLACE TOWER
                               15 EAST 5TH STREET
                           TULSA, OKLAHOMA 74103-4344

                                   ----------

   APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF THE SECURITIES TO THE
             PUBLIC: as soon as practicable after this Registration
                          Statement becomes effective.

                                   ----------

If the securities being registered on this Form are being offered in connection
with the formation of a holding company and there is compliance with General
Instruction G, check the following box. [ ]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective
registration statement for the same offering. [ ]
                                                  --------------

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]
                           --------------

                                   ----------





                        CALCULATION OF REGISTRATION FEE

<Table>
<Caption>


Title of each                                   Proposed maximum       Proposed maximum
class of securities             Amount to be    offering price         aggregate offering    Amount of
to be registered                registered      per unit               price                 registration fee
- ----------------                ------------    ----------------       ------------------    ----------------
                                                                                 

10 1/8 Senior Notes due 2009    $235,612,000                 100%            $235,612,000             $21,677

Guarantees(2)                             --                  --                       --                  --
</Table>

(1) The registration fee has been computed pursuant to rule 457(f)(2) under the
Securities Act of 1933, as amended (the "Securities Act"), based on the stated
principal amount of each outstanding Series A Note which may be received by the
Registrant in the exchange transaction in which the Exchange Notes will be
offered.

(2) Guarantees by subsidiaries of the Registrant of the payment of the principal
and interest on the 10 1/8% Senior Notes due 2009. Pursuant to Rule 457(n), no
additional fee is required.

(*) The following subsidiaries of Parker Drilling Company are co-registrants and
are incorporated in the states and have the I.R.S. Employer Identification
Numbers indicated: (i) Parker Drilling Company of Oklahoma, Incorporated, an
Oklahoma corporation (73-0798949); (ii) Parker Technology, Inc., an Oklahoma
corporation (73-1326129); (iii) Parker Drilling Company International Limited, a
Nevada corporation (73-1046414); (iv) Choctaw International Rig Corp., a Nevada
corporation (73-1046415); (v) Parker Drilling Company Limited, a Nevada
corporation (73-1284516); (vi) Parker Drilling Company Limited, an Oklahoma
corporation (73-1294859); (vii) Parker Drilling Company of New Guinea, Inc., an
Oklahoma corporation (73-1331670); (viii) Parker Drilling Company North America,
Inc., a Nevada corporation (73-1506381); (ix) Parker Drilling U.S.A. Ltd., a
Nevada corporation (73-1030215); (x) Parker-VSE, Inc., a Nevada corporation
(75-1282282); (xi) DGH, Inc., a Texas corporation (75-1726918); (xii) Parker
Drilling Offshore USA, L.L.C., an Oklahoma limited liability company
(72-1361469); (xiii) Quail Tools, L.L.P., an Oklahoma limited liability
partnership(72-1361471); (xiv) Parker USA Drilling Company, a Nevada corporation
(73-1097039); (xv) Parker Technology, L.L.C., a Louisiana limited liability
company(62-1681875); (xvi) Parker Drilling Offshore Corporation, a Nevada
corporation (76-0409092); (xvii) Parker Drilling Offshore International, Inc., a
Cayman Islands corporation (76-0354348); (xviii) Anachoreta, Inc., a Nevada
corporation (88-0103667); (xix) Pardril, Inc., an Oklahoma corporation
(73-0774469); (xx) Parker Aviation, Inc., an Oklahoma corporation (73-1126372);
(xxi) Parker Drilling (Kazakstan), Ltd., an Oklahoma corporation (73-1319753);
(xxiii) Parker Drilling Company of Niger, an Oklahoma corporation (73-1394204);
(xxiv) Parker North America Operations, Inc., a Nevada corporation (73-1571180);
(xxv) Selective Drilling Corporation, an Oklahoma corporation (73-1284213);
(xxvi) Universal Rig Service Corp., a Nevada corporation (73-1097040); (xxvii)
Parker Drilling Management Services, Inc., a Nevada corporation (73-1567200);
and (xxviii) Creek International Rig Corp., a Nevada corporation (73-1046419);
(xxix) International Equipment Leasing Company, a Nevada corporation
(96-0985633); and (xxx) Parker Drilling Company of Colombia Limited, a Nevada
corporation (84-4667744).

- --------------------------------------------------------------------------------

THE REGISTRANTS HEREBY AMEND THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES
AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS SHALL FILE
A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE
SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a),
MAY DETERMINE.

                                   ----------



================================================================================

PROSPECTUS          SUBJECT TO COMPLETION, DATED JULY 1, 2002

                         [PARKER DRILLING COMPANY LOGO]

                             PARKER DRILLING COMPANY
                                OFFER TO EXCHANGE
                    10 1/8% SENIOR NOTES DUE 2009, SERIES B, FOR
                OUTSTANDING 10 1/8% SENIOR NOTES DUE 2009, SERIES A

                         ------------------------------

- -    We are offering to exchange the outstanding notes that we issued in a
     private offering for new registered notes. The outstanding notes were
     issued on May 2, 2002, in exchange for $235,612,000 of our 9 3/4% Senior
     Notes due 2006.

- -    THE EXCHANGE OFFER EXPIRES AT 5:00 P.M., NEW YORK CITY TIME, ON ________,
     2002, UNLESS EXTENDED.

- -    Tenders of outstanding notes may be withdrawn at any time prior to the
     expiration of the exchange offer.

- -    All outstanding notes that are validly tendered and not withdrawn will be
     exchanged.

- -    We believe that the exchange of notes will not be a taxable exchange for
     U.S. federal income tax purposes.

- -    The terms of the notes to be issued will be substantially identical to the
     current terms of the outstanding notes, except for the transfer
     restrictions and registration rights relating to the outstanding notes.

YOU SHOULD CONSIDER CAREFULLY THE "RISK FACTORS" BEGINNING ON PAGE 6 BEFORE
PARTICIPATING IN THE EXCHANGE OFFER.

     NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
COMMISSION HAS APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS
PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A
CRIMINAL OFFENSE.

                   This Prospectus is dated ____________, 2002

===============================================================================

                       WHERE YOU CAN FIND MORE INFORMATION

     We file annual, quarterly and special reports, proxy statements and other
information with the SEC. Our SEC filings are available to the public over the
Internet at the SEC's web site at http://www.sec.gov. You may also read and copy
any document we file at the SEC's public reference room at 450 Fifth Street,
N.W., Washington, D.C. 20549. Please call the SEC at 1-800-SEC-0330 for further
information on the public reference room. Our common stock is listed and traded
on the New York Stock Exchange under the trading symbol "PKD." Our reports,
proxy statements and other information filed with the SEC can also be inspected
and copied at the New York Stock Exchange, 20 Broad Street, New York, New York.

     This prospectus, which constitutes a part of a registration statement on
form S-4 filed by us with the SEC under the Securities Act of 1933, omits
certain of the information set forth in the registration statement. Accordingly,
you should refer to the registration statement and its exhibits for further
information with respect to us and the exchange notes. Copies of the
registration statement and its exhibits are on file at the offices of the SEC.
Furthermore, statements contained in this prospectus concerning any document
filed as an exhibit are not necessarily complete and, in each instance, we refer
you to the copy of such document filed as an exhibit to the registration
statement.

     This prospectus "incorporates by reference" the information we file with
the SEC, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
considered to be part of this prospectus and information that we file later with
the SEC will automatically update and supersede the information in this
prospectus. We incorporate by reference the documents listed below and any
future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of
the Securities Exchange Act of 1934 from the initial filing of the registration
statement on Form S-4 until termination of the exchange offer:

     -    Our Annual Report on Form 10-K for the year ended December 31, 2001,
          except for the financial statements which are included in our Current
          Report on Form 8-K filed on June 28, 2002.
     -    Our Quarterly Report on Form 10-Q for the quarter ended March 31,
          2002.
     -    Our Proxy Statement on Schedule 14A sent to shareholders in connection
          with our Annual Meeting of Shareholders held April 25, 2002.
     -    Our Current Reports on Form 8-K filed on June 28, 2002 and
          April 1, 2002.

     At your request, we will provide to you at no cost a copy of any other
filings, or a copy of the indenture governing the exchange notes. You may
request any of these by writing or telephoning us at the following address:

             John R. Burkhalter
             Director of Investor Relations
             Parker Drilling Company
             1401 Enclave Parkway, Suite 600
             Houston, Texas 77077
             (281) 406-2000

     TO INSURE TIMELY DELIVERY, YOU SHOULD REQUEST THESE FILINGS NO LATER THAN
_______, 2002.

                                       i

                                     SUMMARY

     The following summary highlights selected information from this prospectus
and may not contain all of the information that is important to you. For a more
complete understanding of this exchange offer, we encourage you to read this
entire prospectus and the documents to which we have referred you. The term
"outstanding notes" refers to the 10 1/8% Senior Notes due 2009, Series A, that
were issued in May 2002. The term "exchange notes" refers to the 10 1/8% Senior
Notes due 2009, Series B, issuable in the exchange offer. The term "notes"
collectively refers to the outstanding notes and the exchange notes.


                                   THE COMPANY

     Parker Drilling Company was incorporated in the state of Oklahoma in 1954
after having been established in 1934 by our founder, Gifford C. Parker. The
founder was the father of Robert L. Parker, our chairman and a principal
stockholder, and the grandfather of Robert L. Parker Jr., president and chief
executive officer. In March 1976, our state of incorporation was changed to
Delaware. Unless otherwise indicated, the term "Company," "we," "us," and "our,"
refer to Parker Drilling Company together with our subsidiaries and "Parker
Drilling" refers solely to our parent, Parker Drilling Company.

     We are a leading worldwide provider of contract drilling and drilling
related services. Our primary operating areas are:

     -    the transition zones of the Gulf of Mexico, Nigeria and the Caspian
          Sea,
     -    the offshore waters of the Gulf of Mexico, and
     -    on land in international oil and gas producing regions.

     Our current marketed rig fleet consists of:

     -    27 barge drilling and workover rigs, dedicated to drilling in
          transition zone waters, which are generally defined as coastal waters
          having depths from five to 25 feet,
     -    seven offshore jackup rigs,
     -    four offshore platform rigs capable of drilling in water depths of 85
          to 215 feet, and
     -    41 land rigs, which generally consists of premium and specialized deep
          drilling rigs, 37 of which are capable of drilling to depths of 10,000
          feet or greater.

     The diversity of our rig fleet, both in terms of geographic location and
asset class, enables us to provide a broad range of services to oil and gas
operators around the world.

                                       1

                               THE EXCHANGE OFFER

     On May 2, 2002, we issued the outstanding notes, consisting of $235,612,000
in aggregate principal amount of 10 1/8% Senior Notes due 2009, Series A, in a
private offering. The outstanding notes were issued to institutional accredited
investors in transactions exempt from the registration requirements of the
Securities Act of 1933.

     When we issued the outstanding notes, we entered into a registration rights
agreement in which we agreed to use our best efforts to complete the exchange
offer.


                             
The Exchange Offer              Under the terms of the exchange offer, you are
                                entitled to exchange  your outstanding notes for
                                registered exchange notes. You should read the
                                discussion under the sections "The Exchange
                                Offer" and "Description of the Exchange Notes"
                                for further information regarding the exchange
                                offer and exchange notes. The outstanding notes
                                may be tendered only in integral multiples of
                                $1,000.

Resale of Exchange Notes        We believe that the exchange notes issued in the
                                exchange offer may be offered for resale, resold
                                or otherwise transferred by you without
                                compliance with the registration and prospectus
                                delivery provisions of the Securities Act of
                                1933, provided that:
                                -    you are acquiring the exchange notes in the
                                     ordinary course of your business;
                                -    you have no arrangement or understanding
                                     with any person to participate in the
                                     distribution of the exchange notes; and
                                -    you are not an "affiliate" of ours.

                                If any of the these three factors are not true
                                and you transfer any exchange note without
                                delivering a prospectus meeting the requirements
                                of the Securities Act or without an exemption
                                from the registration requirements of the
                                Securities Act, you may incur liability under
                                the Securities Act. We do not assume or
                                indemnify you against such liability.

                                If you are a broker-dealer and receive exchange
                                notes for your own account in exchange for
                                outstanding notes that you acquired as a result
                                of market making or other trading activities,
                                you must acknowledge that you will deliver a
                                prospectus meeting the requirements of the
                                Securities Act in connection with any resale of
                                the exchange notes. A broker-dealer may use this
                                prospectus for an offer to resell, resale or
                                other transfer of the exchange notes.

Failure to Exchange
Outstanding Notes May Affect
You Adversely                   If you do not exchange your outstanding notes
                                for exchange notes, you will no longer be able
                                to require us to register the outstanding notes
                                under the Securities Act. In addition, you will
                                not be able to offer or sell your outstanding
                                notes unless:
                                -    they are registered under the Securities
                                     Act; or
                                -    you offer or sell them under an exemption
                                     from the requirements of or in a
                                     transaction not subject to, the Securities
                                     Act.

Expiration Time                 The exchange offer will expire at 5:00 p.m., New
                                York City time, on _______, 2002. We have the
                                right to extend the exchange offer.

Conditions to
Exchange Offer                  We will proceed with the exchange offer, so long
                                as;
                                -    the exchange offer does not violate any
                                     applicable law or applicable interpretation
                                     of law of the staff of the SEC;


                                       2


                             
                                -   no litigation materially impairs our ability
                                    to proceed with the exchange offer; and
                                -   we obtain all the governmental approvals we
                                    deem necessary for the exchange offer.

Procedures for
Exchanging Outstanding
Notes                           If you wish to accept the exchange offer, you
                                must comply with procedures for exchanging notes
                                described under "The Exchange Offer --
                                Procedures for Exchanging Notes."

Withdrawal Rights               You may withdraw the tender of your outstanding
                                notes at any time prior to the expiration time.
                                To withdraw, you must send a written or
                                facsimile transmission notice of withdrawal to
                                the exchange agent at its address set forth in
                                this prospectus under the section "The Exchange
                                Offer" under the heading "Exchange Agent" by the
                                expiration time.

Acceptance of Outstanding
Notes and Delivery
of Exchange Notes               If all of the conditions to the exchange offer
                                are satisfied or waived, we will accept any and
                                all outstanding notes that are properly tendered
                                in the exchange offer prior to the expiration
                                time. We will deliver the exchange notes
                                promptly after the expiration time.

Use of Proceeds                 We will not receive any cash proceeds from the
                                issuance of the exchange notes.

Tax Considerations              We believe that the exchange of outstanding
                                notes for exchange notes will not be a taxable
                                exchange for federal income tax purposes.
                                However, you should consult your tax adviser
                                about the tax consequences of this exchange as
                                they apply to your individual circumstances.

Exchange Agent                  JPMorgan Chase Bank is serving as exchange agent
                                for the exchange offer.

Fees and Expenses               We will bear all expenses related to
                                consummating the exchange offer and complying
                                with the registration rights agreement.


                                       3

                        DESCRIPTION OF THE EXCHANGE NOTES

     The exchange notes will be freely tradable and otherwise substantially
identical to the outstanding notes. The exchange notes will not have
registration rights or provisions for additional interest. The exchange notes
will evidence the same debt as the outstanding notes, and the outstanding notes
are, and the exchange notes will be, governed by the same indenture.


                                
Total Amount of Exchange
Notes Offered                      $235,612,000 in aggregate principal amount of
                                   10 1/8% Senior Notes due 2009, Series B.

Maturity Date                      November 15, 2009.

Interest                           Fixed annual rate of 10 1/8%.

Interest Payment Dates             May 15 and November 15 of each year,
                                   commencing November 15, 2002.

Optional Redemption                We may redeem some or all of the exchange
                                   notes at any time on or after November 15,
                                   2004, at the redemption prices described
                                   under "Description of the Exchange Notes --
                                   Optional Redemption."

Change of Control                  If there is a change of control of the
                                   Company, as defined in the Indenture, each
                                   holder of exchange notes will have the right
                                   to require us to purchase all or a portion of
                                   that holder's outstanding notes at a price
                                   equal to 101% of their aggregate principal
                                   amount together with accrued and unpaid
                                   interest to the date of purchase. See
                                   "Description of the Exchange Notes --
                                   Repurchase at the Option of Holders -- Change
                                   of Control."

Guarantees                         The full and prompt performance of our
                                   obligations under the indenture and the notes
                                   will be unconditionally guaranteed on a
                                   senior unsecured basis by each of our
                                   principal operating subsidiaries. The
                                   subsidiary guarantees may be released under
                                   certain circumstances. See "Description of
                                   the Exchange Notes -- Subsidiary Guarantees."

Ranking                            The exchange notes will be senior unsecured
                                   obligations, ranking equal in right of
                                   payment with all of our other senior
                                   indebtedness and ranking above  all of our
                                   subordinated indebtedness. The exchange notes
                                   and the subsidiary guarantees will be
                                   effectively subordinated to our secured
                                   indebtedness and that of the subsidiary
                                   guarantors to the extent of the security for
                                   the secured indebtedness, respectively,
                                   including any indebtedness under our senior
                                   credit facility, which is secured by liens
                                   on certain of our accounts receivable,
                                   inventory and certain barge rigs located in
                                   the Gulf of Mexico. At March 31, 2002, we had
                                   secured indebtedness outstanding (excluding
                                   letters of credit) of $14.4 million and
                                   $46.4 million of available borrowing capacity
                                   under the revolving credit portion of our
                                   senior credit facility, less $16.2 million
                                   reserved to support outstanding letters of
                                   credit. Subject to certain limitations, we
                                   and our subsidiaries may incur additional
                                   indebtedness in the future. The exchange
                                   notes will also be effectively subordinated
                                   to all indebtedness and other liabilities of
                                   our subsidiaries that do not guarantee
                                   payment of the exchange notes. See
                                   "Description of Certain Indebtedness" and
                                   "Description of the Exchange Notes -- Certain
                                   Covenants -- Incurrence of Indebtedness and
                                   Issuance of Preferred Stock; -- Liens."

Certain Covenants                  The indenture relating to the exchange notes
                                   contains certain covenants, including
                                   covenants that limit:
                                   -    incurrence of indebtedness;


                                       4


                                
                                   -    restricted payments;
                                   -    issuances and sales of capital stock of
                                        restricted subsidiaries;
                                   -    sale/leaseback transactions;
                                   -    transactions with affiliates;
                                   -    liens;
                                   -    asset sales;
                                   -    dividends and other payment restrictions
                                        affecting restricted subsidiaries;
                                   -    conduct of business; and
                                   -    mergers, consolidations or sales of
                                        assets.


          See "Description of the Exchange Notes -- Certain Covenants."

                                       5

                           FORWARD LOOKING STATEMENTS

     This prospectus, including the documents that we incorporate by reference,
contains statements that constitute "forward-looking statements." These
statements appear in a number of places in this prospectus and include
statements regarding our plans, beliefs or current expectations, including those
plans, beliefs and expectations of our officers and directors.

     Forward-looking statements are based on certain assumptions and analyses we
have made in light of our experience and perception of historical trends,
current conditions, expected future developments and other factors we believe
are relevant. Although we believe that our assumptions are reasonable based on
current information available, they are subject to certain risks and
uncertainties, many of which are outside our control. These risks and
uncertainties include:

          -    worldwide economic and business conditions that adversely affect
               market conditions and/or the cost of doing business,
          -    the pace of recovery in the U.S. economy and the demand for
               natural gas,
          -    fluctuations in the market prices of oil and gas,
          -    imposition of unanticipated trade restrictions,
          -    political instability,
          -    governmental regulations that adversely affect the cost of doing
               business,
          -    adverse environmental events,
          -    adverse weather conditions,
          -    changes in concentration of customer and supplier relationships,
          -    unexpected cost increases for upgrade and refurbishment projects,
          -    changes in competition, and
          -    other similar factors (some of which are discussed in this
               prospectus and in documents incorporated by reference into this
               prospectus).

Because the forward-looking statements are subject to risks and uncertainties,
the actual results of our operations and actions may differ materially from
those expressed or implied by such forward-looking statements. These risks and
uncertainties are referenced in connection with forward-looking statements that
are included from time to time in this prospectus. Each forward-looking
statement speaks only as of the date of this prospectus or the date of any
document incorporated by reference, and we undertake no obligation to publicly
update or revise any forward-looking statement.


                                  RISK FACTORS

     YOU SHOULD CONSIDER CAREFULLY THE FOLLOWING RISK FACTORS, TOGETHER WITH ALL
OF THE OTHER INFORMATION IN THIS PROSPECTUS AND THE DOCUMENTS THAT ARE
INCORPORATED BY REFERENCE, BEFORE YOU DECIDE TO EXCHANGE YOUR OUTSTANDING NOTES
FOR EXCHANGE NOTES IN THE EXCHANGE OFFER.


RISK FACTORS RELATING TO OUR BUSINESS

OUR BUSINESS COULD BE ADVERSELY AFFECTED IF LOWER OIL AND GAS PRICES DECREASE
DEMAND FOR OUR SERVICES.

     Our business and operations depend upon exploration and development
spending by oil and gas companies. An actual decline, or the perceived risk of a
decline, in oil and gas prices could cause oil and gas companies to reduce their
overall level of spending. As a result, demand for our services may decrease and
our business may be adversely affected.

                                       6

OUR HIGH LEVERAGE COULD ADVERSELY AFFECT OUR FUTURE PERFORMANCE AND OUR ABILITY
TO SATISFY OUR DEBT OBLIGATIONS.

     Our business requires substantial capital. We now have, and will continue
to have in the foreseeable future, a relatively high level of debt in relation
to our stockholders' equity. As of March 31, 2001, we had $584.0 million of
long-term debt outstanding and stockholders' equity of $402.0 million.

     Our ability to meet our debt service obligations depends on our future
performance. Our future performance is influenced by general economic conditions
and by financial, business and other factors affecting our operations, many of
which are beyond our control. If we are unable to service our debt, we may have
to:

          -    delay the acquisition of additional rigs and other assets;

          -    sell equity securities;

          -    sell assets; or

          -    restructure or refinance our debt.

We cannot give you any assurances that, if we are unable to service our debt, we
will be able to sell equity securities, sell assets or restructure or refinance
our debt.

     Our substantial debt could have important consequences to you. For example,
it could:

          -    make it more difficult for us to obtain additional financing in
               the future for our acquisitions and operations;

          -    require us to dedicate a substantial portion of our cash flows
               from operations to the repayment of our debt and the interest
               associated with our debt;

          -    limit our operating flexibility due to financial and other
               restrictive covenants, including restrictions on incurring
               additional debt, creating liens on our properties and paying
               dividends on our equity securities;

          -    place us at a competitive disadvantage compared with our
               competitors that have relatively less debt; and

          -    make us more vulnerable in the event of a downturn in our
               business.

UNPREDICTABLE CHANGES IN GOVERNMENTAL REGULATIONS COULD INCREASE OUR OPERATING
COSTS AND REDUCE DEMAND FOR OUR SERVICES.

     Our operations are affected by a variety of laws and regulations, including
laws and regulations relating to:

          -    the protection of the environment;

          -    safety; and

          -    permitting or licensing requirements for drilling activities and
               for oil and gas exploration and development activities.

We and our customers are required to invest financial and managerial resources
to comply with these laws and regulations. Because these laws and our business
change from time to time, we cannot predict the future costs of complying with
these laws, and our expenditures could be material in the future. Modification
of existing laws or regulations or adoption of new laws or regulations limiting
exploration or production activities by oil and gas

                                       7

companies or imposing more stringent restrictions on drilling operations could
adversely affect us by reducing the demand for, or increasing the cost of, our
services.

WE OPERATE IN INTERNATIONAL MARKETS, SO WE HAVE EXPOSURE TO RISKS INHERENT IN
DOING BUSINESS ABROAD.

     A significant portion of our revenue is derived from operations outside the
United States and is subject in varying degrees to risks inherent in doing
business abroad. These risks include:

          -    the possibility of unfavorable changes in tax or other laws;

          -    partial or total expropriation;

          -    currency exchange rate fluctuations, devaluations and
               restrictions on currency repatriation;

          -    the disruption of operations from labor and political
               disturbances;

          -    insurrection or war;

          -    disruption or delay of licensing or permitting activities; and

          -    requirements of partial local ownership of operations.

WE ARE SUBJECT TO HAZARDS CUSTOMARY FOR DRILLING OPERATIONS.

     Substantially all of our operations are subject to hazards that are
customary for oil and gas drilling operations, including blowouts, reservoir
damage, loss of well control, cratering and oil and gas well fires. Our offshore
operations also are subject to hazards inherent in marine operations, such as
capsizing, grounding, collision and damage from severe weather conditions. Any
of these risks could result in damage to or destruction of drilling equipment,
personal injury and property damage, suspension of operations or environmental
damage.

BECAUSE WE DO NOT HAVE CUSTOMER INDEMNITIES OR INSURANCE TO COVER SOME OPERATING
RISKS, OUR RESULTS OF OPERATIONS COULD BE ADVERSELY AFFECTED IF ONE OF THOSE
RISKS OCCURRED.

     We cannot always obtain customer indemnities or insurance for our operating
risks. Although we carry insurance against the destruction of or damage to our
drilling equipment in amounts that we consider adequate, such insurance may not
always be available at acceptable rates in the future for all risks and all
geographic areas.

IF WE CANNOT KEEP OUR RIGS UTILIZED, OUR OPERATING RESULTS WILL BE ADVERSELY
IMPACTED.

     Our business is capital intensive and generally requires significant
investments in drilling equipment. As a result, we incur relatively high fixed
costs in our operations. If we cannot keep our rigs utilized, our operating
results will be adversely impacted.

OUR DEBT AGREEMENTS MAY LIMIT OUR FLEXIBILITY IN RESPONDING TO CHANGING MARKET
CONDITIONS OR IN PURSUING BUSINESS OPPORTUNITIES.

     Our debt agreements contain restrictions and requirements relating to,
among other things:

          -    the issuance of additional indebtedness;

          -    the maintenance of financial ratios;

          -    the encumbrance of assets;

                                       8

          -    the sale of assets;

          -    the amount of our capital expenditures;

          -    the payment of dividends on our equity securities; and

          -    mergers.

These restrictions and requirements may limit our flexibility in responding to
changing market conditions or in pursuing business opportunities that we believe
would have a positive effect on our business.

DESPITE OUR CURRENT LEVELS OF INDEBTEDNESS, WE STILL MAY BE ABLE TO INCUR
SUBSTANTIALLY MORE DEBT. THIS COULD FURTHER INCREASE THE RISKS DESCRIBED ABOVE.

     We may be able to incur substantial additional indebtedness in the future.
The terms of the indenture relating to the notes do not fully prohibit us from
doing so. Those borrowings may be effectively senior to the notes and any note
guarantees to the extent of the security for the borrowings. If new debt is
added to our current debt levels, the related risks that we now face could
intensify.

TO SERVICE OUR INDEBTEDNESS, WE WILL REQUIRE A SIGNIFICANT AMOUNT OF CASH. OUR
ABILITY TO GENERATE CASH DEPENDS ON MANY FACTORS BEYOND OUR CONTROL.

     Our ability to make payments on our indebtedness, including the notes, and
to fund planned capital expenditures will depend on our ability to generate cash
in the future. This, to a certain extent, is subject to general economic,
financial, competitive, legislative, regulatory and other factors that are
beyond our control. We cannot assure you that our business will generate
sufficient cash flow from operations, that we will realize operating
improvements or that future borrowings will be available to us in an amount
sufficient to enable us to pay our indebtedness, including the notes, or to fund
our other liquidity needs. We may need to refinance all or a portion of our
indebtedness, including the notes, on or before maturity. We might not be able
to refinance any of our indebtedness on commercially reasonable terms or at all.

ANY FAILURE TO MEET OUR DEBT OBLIGATIONS COULD HARM OUR BUSINESS, FINANCIAL
CONDITION AND RESULTS OF OPERATIONS.

     If our cash flow and capital resources are insufficient to fund our debt
obligations, we may be forced to sell assets, seek additional equity or debt
capital or restructure our debt. In addition, any failure to make scheduled
payments of interest and principal on our outstanding indebtedness would likely
result in a reduction of our credit rating, which could harm our ability to
incur additional indebtedness on acceptable terms. Our cash flow and capital
resources may be insufficient for payment of interest on and principal of our
debt in the future, including payments on the notes, and any alternative
measures may be unsuccessful or may not permit us to meet scheduled debt service
obligations, which could cause us to default on our obligations and impair our
liquidity.


RISK FACTORS RELATING TO OUR DEBT SECURITIES

WE ARE A HOLDING COMPANY AND DEPEND ON OUR SUBSIDIARIES FOR FUNDS.

     Our subsidiary companies conduct substantially all of our business. Our
holding company structure results in two principal risks:

          -    our subsidiaries may be restricted by contractual provisions or
               applicable laws from providing us the cash that we need to pay
               parent company debt service obligations, including payments on
               the notes; and

                                       9

          -    in any liquidation, reorganization or insolvency proceeding
               involving us, your claim as a holder of the notes will be
               effectively junior to the claims of holders of any indebtedness
               or preferred stock of our subsidiaries who are not Subsidiary
               Guarantors.

THERE MAY BE NO PUBLIC MARKET FOR EXCHANGE NOTES.

     The exchange notes will constitute a new issue of securities with no
established trading market. Jeffries & Company, Inc., the dealer manager engaged
in connection with the issuance of the outstanding notes, has informed us that,
following completion of the registered exchange offer of outstanding notes for
the exchange notes, it intends to make a market in the exchange notes. However,
it is not obligated to do this, and any market making which is undertaken may be
discontinued at any time without notice. In addition, any market making activity
will be subject to the limits imposed by the Securities Act of 1933 and the
Securities Exchange Act of 1934 and may be limited during this exchange offer or
the pendency of the shelf registration statement. See "Description of the
Exchange Notes -- Registration Rights; Liquidated Damages." Accordingly, no
assurance can be given that an active public or other market will develop for
the exchange notes or as to the liquidity of or the trading market for the
exchange notes. If an active market does not develop, the market price and
liquidity of the exchange notes may be adversely affected. In addition, we do
not intend to apply (and are not obligated to apply) for listing or quotation of
the exchange notes on any securities exchange or stock market.

ALTHOUGH THE OCCURRENCE OF SPECIFIC CHANGE OF CONTROL EVENTS AFFECTING US WILL
PERMIT YOU TO REQUIRE US TO REPURCHASE THE NOTES, WE MAY NOT BE ABLE TO
REPURCHASE THE NOTES.

     Upon the occurrence of specific change of control events affecting us, you
will have the right to require us to repurchase the notes at 101% of their
principal amount, plus accrued and unpaid interest. Our ability to repurchase
the notes upon such a change of control event would be limited by our access to
funds at the time of the repurchase and the terms of our other debt agreements.
Upon a change of control event, we may be required immediately to repay the
outstanding principal, any accrued interest on and any other amounts owed by us
under our senior credit facilities, the notes and other outstanding
indebtedness. The source of funds for these repayments would be our available
cash or cash generated from other sources. However, we cannot assure you that we
will have sufficient funds available upon a change of control to make any
required repurchases of this outstanding indebtedness.

FEDERAL AND STATE STATUTES ALLOW COURTS, UNDER SPECIFIC CIRCUMSTANCES, TO VOID
GUARANTEES AND REQUIRE HOLDERS OF THE NOTES TO RETURN PAYMENTS RECEIVED FROM
GUARANTORS.

     Under the federal bankruptcy law and comparable provisions of state
fraudulent transfer laws, a guarantee could be voided, or claims in respect of a
guarantee could be subordinated to all other debts of that guarantor, if, among
other things, the guarantor, at the time it incurred the indebtedness evidenced
by its guarantee:

     -    received less than reasonably equivalent value or fair consideration
          for the incurrence of the guarantee;

     -    was insolvent or rendered insolvent by reason of the incurrence;

     -    was engaged in a business or transaction for which the guarantor's
          remaining assets constituted unreasonably small capital; or

     -    intended to incur, or believed that it would incur, debts beyond its
          ability to pay the debts as they mature.

     In addition, any payment by that guarantor pursuant to its guarantee could
be voided and required to be returned to the guarantor or to a fund for the
benefit of the creditors of the guarantor.

                                       10

     The measures of insolvency for purposes of these fraudulent transfer laws
will vary depending upon the law applied in any proceeding to determine whether
a fraudulent transfer has occurred. Generally, however, a guarantor would be
considered insolvent if:

     -    the sum of its debts, including contingent liabilities, were greater
          than the fair saleable value of all of its assets;

     -    if the present fair saleable value of its assets were less than the
          amount that would be required to pay its probable liability on its
          existing debts, including contingent liabilities, as they become
          absolute and mature; or

     -    it could not pay its debts as they become due.

     We believe that any guarantor of the notes, after giving effect to its
guarantee of the notes, would not be insolvent, would not have unreasonably
small capital for the business in which it would be engaged and would not have
incurred debts beyond its ability to pay such debts as they mature. We cannot
assure you, however, as to what standard a court would apply in making these
determinations or that a court would agree with our conclusions in this regard.


                                       11

THE EXCHANGE OFFER

     The outstanding notes were issued to selected institutional accredited
investors who were holders of our outstanding 9 3/4 % Senior Notes due 2006 (the
"2006 Notes") in exchange for $235,612,000 of outstanding principal amount of
the 2006 Notes.

     In connection with the issuance of the outstanding notes, we entered into a
Registration Rights Agreement dated May 2, 2002, with Jefferies & Company, Inc.
on behalf of the holders of the outstanding notes. Pursuant to the Registration
Rights Agreement, we have agreed to file a registration statement (the "Exchange
Offer Registration Statement"), of which this prospectus is a part, with the SEC
with respect to a registered offer to exchange the outstanding notes for
exchange notes having terms substantially identical in all material respects to
the outstanding notes, except that the exchange notes will not contain terms
with respect to transfer restrictions and additional interest.

     Under the Registration Rights Agreement, we will, at our cost:

     -    file the Exchange Offer Registration Statement not later than 60 days
          of the date of original issuance of the outstanding notes;

     -    use our best efforts to cause the Exchange Offer Registration
          Statement to be declared effective under the Securities Act not later
          than 120 days after the date of original issuance of the outstanding
          notes; and

     -    keep the exchange offer open for a period of not less than the minimum
          period required under applicable federal and state securities laws but
          in no event less than 20 business days nor more than 45 business days
          (or longer if required by applicable law).

     The exchange offer being made by this prospectus, if commenced and
consummated within the time periods described in this paragraph, will satisfy
our obligations under the Registration Rights Agreement.

     Upon the terms and subject to the conditions set forth in this prospectus
and in the letter of transmittal, all outstanding notes validly tendered and not
withdrawn prior to the expiration time will be accepted for exchange. Exchange
notes of the same class will be issued in exchange for an equal principal amount
of outstanding notes accepted in the exchange offer. Outstanding notes may be
tendered only in integral multiples of $1,000.00. This prospectus, together with
the letter of transmittal, is being sent to all registered holders of
outstanding notes. The exchange offer is not conditioned upon any minimum
principal amount of outstanding notes being tendered in exchange.

     You will not be required to pay brokerage commissions or fees or, subject
to the instructions in the letter of transmittal, transfer taxes with respect to
the exchange. We will pay all charges, expenses and transfer taxes in connection
with the exchange offer, other than certain transfer taxes described in the
letter of transmittal.


                                       12


EXPIRATION TIME; EXTENSIONS; TERMINATION; AMENDMENTS

     The exchange offer will terminate at the expiration time. If you do not
tender your outstanding notes by the expiration time, we will not accept your
outstanding notes for exchange. The expiration time is 5:00 p.m., New York City
time, on _______, 2002. We may extend the exchange offer to a later expiration
time. If we do, the expiration time shall mean the latest time to which the
exchange offer is extended. If we extend the exchange offer, we will notify the
exchange agent of the extension.

     We have the right to amend the exchange offer at any time. If we make an
amendment which we determine is material, we will disclose the amendment in a
manner which we determine is reasonably calculated to inform the holders of
outstanding notes. We also have the right to terminate the exchange offer at any
time for any reason. If we terminate the exchange offer, we will promptly return
to you any outstanding notes which you have previously tendered for exchange.

                                       13


PROCEDURES FOR EXCHANGING NOTES

     In order to participate in the exchange offer, you must properly tender
your outstanding notes to the exchange agent as described below. It is your
responsibility to properly tender your notes. We have the right to waive any
defects. However, we are not required to waive defects and are not required to
notify you of defects in your exchange.

     If you have any questions or need help in exchanging your notes, please
call the exchange agent whose address and phone number are under the section of
this prospectus captioned, "The Exchange Offer--The Exchange Agent."

     All of the outstanding notes were issued in book-entry form, and all of the
outstanding notes are currently represented by global certificates held for the
account of DTC. We have confirmed with DTC that the outstanding notes may be
tendered using the Automated Tender Offer Program ("ATOP") instituted by DTC.
DTC participants may electronically transmit their acceptance of the exchange
offer by causing DTC to transfer their outstanding notes to the exchange agent
using the ATOP procedures. In connection with the transfer, DTC will send an
"agent's message" to the exchange agent. The agent's message will state that DTC
has received instructions from the participant to tender outstanding notes and
that the participant agrees to be bound by the terms of the letter of
transmittal.

     By using the ATOP procedures to exchange outstanding notes, you will not be
required to deliver a letter of transmittal to the exchange agent. However, you
will be bound by its terms just as if you had signed it.


ACCEPTANCE OF OUTSTANDING NOTES FOR EXCHANGE; DELIVERY OF EXCHANGE NOTES

     Upon satisfaction or waiver of all of the conditions in the exchange offer,
all outstanding notes properly tendered will be accepted, promptly after the
expiration time, and the exchange notes will be issued promptly after the
acceptance of the outstanding notes. For purposes of the exchange offer,
outstanding notes shall be deemed to have been accepted as validly tendered for
exchange when, as and if we have given oral (promptly confirmed in writing) or
written notice thereof to the exchange agent.

     In all cases, issuance of exchange notes for outstanding notes that are
accepted for exchange pursuant to the exchange offer will be made only after
timely receipt by the exchange agent of certificates for such outstanding notes
or a timely Book-Entry Confirmation of such outstanding notes into the exchange
agent's account at the Book-Entry Transfer Facility, a properly completed and
duly executed letter of transmittal and all other required documents or an
agent's message in lieu thereof. If any tendered outstanding notes are not
accepted for any reason set forth in the terms and conditions of the exchange
offer or if outstanding notes are submitted for greater principal amount than
the holder desires to exchange, such unaccepted or non-exchanged outstanding
notes will be returned without expense to the tendering holder as promptly as
practicable after the expiration or termination of the exchange offer. In the
case of outstanding notes tendered by the book-entry transfer procedures
described below, the non-exchanged outstanding notes will be credited to an
account maintained with the Book-Entry Transfer Facility.

     We will not be responsible for any mistakes or delays made by the exchange
agent in distributing the exchange notes or interest on the outstanding notes.


WITHDRAWAL RIGHTS

     You may withdraw outstanding notes which you have tendered for exchange at
any time before the expiration time.

     In order to withdraw outstanding notes you have tendered for exchange, you
must submit to the exchange agent a notice of withdrawal, using the ATOP
procedures, prior to the date the withdrawal right expires.

                                       14


     If you withdraw outstanding notes, you will have the right to re-tender
them prior to the expiration of the withdrawal rights in accordance with the
procedures described above for exchanging outstanding notes.


DETERMINATION OF WHETHER AN EXCHANGE OF OUTSTANDING NOTES IS PROPER

     We will not be required to issue exchange notes for outstanding notes
pursuant to the exchange offer unless those outstanding notes are properly
tendered. Similarly, we will be able to retain notes which have been tendered if
you do not properly comply with the procedures to withdraw the outstanding
notes. We will have the right to decide whether an exchange or withdrawal was
made properly and our decision will be final. You should note the following with
respect to the exchange offer.

     -    If we determine you have not properly tendered your outstanding notes,
          or have not properly complied with the procedures to withdraw notes
          previously tendered, you will have to correct the problem in the time
          period we determine.

     -    We are not under any obligation to advise you of any defect in your
          exchange or withdrawal; neither is the exchange agent.

     -    We have the right to waive any defect in the exchange or withdrawal of
          outstanding notes, and may waive a defect with respect to one note
          holder and not another.

     -    If we determine you have not properly tendered your outstanding notes,
          they will be promptly returned to you following the exchange offer via
          a credit to the appropriate DTC account.

     We have no obligation to, and will not knowingly, permit acceptance of
tenders of outstanding notes:

     -    from affiliates of ours within the meaning of Rule 405 under the
          Securities Act of 1933;

     -    from any other holder or holders who are not eligible to participate
          in the exchange offer under applicable law or interpretations by the
          SEC; and

     -    if the exchange notes to be received by such holder or holders of
          outstanding notes in the exchange offer, upon receipt, will not be
          tradable by such holder without restriction under the Securities Act
          of 1933 and the Securities Exchange Act of 1924 and without material
          restrictions under the "blue sky" or securities laws of substantially
          all of the states of the United States.


NO APPRAISAL OR SIMILAR RIGHTS

     The indenture under which the outstanding notes were issued and applicable
law do not give the holders of outstanding notes any appraisal or similar rights
to request a court or other person to value their outstanding notes in
connection with the exchange offer.

                                       15


THE EXCHANGE AGENT

     JPMorgan Chase Bank, the trustee under the indenture covering the
outstanding notes, will act as exchange agent. In this capacity, JPMorgan Chase
Bank will have no fiduciary or similar duties and will be acting solely on the
basis of our instructions. You may request assistance in tendering your
outstanding notes and may get additional copies of this prospectus and the
letter of transmittal by writing or calling the exchange agent as follows:



- ----------------------------------------------------------------------------
     By Overnight Courier,
Registered/Certified Mail or Hand                By Facsimile
- ----------------------------------------------------------------------------
                                        
JPMorgan Chase Bank                        JPMorgan Chase Bank
GIS Unit Trust Window                      Facsimile: (713) 216-2431
4 New York Plaza, 1st Floor                Attention: Rebecca A. Newman
New York, New York 10004-2413
Attention: Rebecca A. Newman
- ----------------------------------------------------------------------------


     As discussed above, it is your obligation to properly tender your
outstanding notes for exchange in a timely fashion.


ACCOUNTING TREATMENT

     The exchange notes will be recorded at the same principal amount as the
outstanding notes as of the date of the exchange. For accounting purposes, the
exchange of the notes will be treated as a modification of debt instruments. As
a result, transaction fees and other third party fees associated with the
exchange such as legal and accounting fees will be charged to expense. In
addition, the remaining unamortized debt issue costs relating to the outstanding
notes will be amortized over the term of the exchange notes.


SHELF REGISTRATION STATEMENT

     In the event that:

     -    any change in law or applicable interpretations of the staff of the
          SEC do not permit us to effect the exchange offer;

     -    the exchange offer is not consummated within 45 business days after
          the date of this prospectus;

     -    under certain circumstances if the holders so request with respect to
          outstanding notes not eligible to be exchanged for exchange notes in
          this exchange offer;

     -    under certain circumstances any holder of outstanding notes is not
          eligible to participate in this exchange offer or does not receive
          freely tradable exchange notes in exchange for outstanding notes
          constituting any portion of an unsold allotment (it being understood
          that the requirement that a participating broker-dealer deliver this
          prospectus in connection with sales of exchange notes shall not result
          in such exchange notes being not "freely tradable");

     we will, at our cost,

     -    cause to be filed a shelf registration statement pursuant to Rule 415
          under the Act, on or prior to the later to occur of (1) the 30th day
          after the occurrence of one of the events described above, and (2) the
          90th day after the date of issuance of the exchange notes pursuant to
          this exchange offer (such earliest date being the "Shelf Filing
          Deadline");

                                       16


     -    use our best efforts to cause the shelf registration statement to be
          declared effective under the Securities Act of 1933 on or before the
          90th day after the event giving rise to the obligation to file it; and

     -    use our best efforts to keep the shelf registration statement
          effective until two years after its effective date.

     We will, in the event a shelf registration statement is filed, among other
things;

     -    provide to each holder for whom the shelf registration statement was
          filed copies of the prospectus which is a part of the shelf
          registration statement;

     -    notify each such holder when the shelf registration statement has
          become effective; and

     -    take certain other actions as are required to permit unrestricted
          resales of the outstanding notes or the exchange notes, as the case
          may be.

     A holder selling outstanding notes or exchange notes pursuant to the shelf
registration statement generally would be required to be named as a selling
security holder in the related prospectus and to deliver a prospectus to
purchasers, will be subject to certain of the civil liability provisions under
the Securities Act of 1933 in connection with sales and will be bound by the
provisions of the Registration Rights Agreement which are applicable to such
holder (including certain indemnification obligations).


FEDERAL INCOME TAX CONSEQUENCES

     We have described the tax consequences of the exchange offer under "Certain
U.S. Federal Income Tax Considerations."


CONSEQUENCES OF FAILURE TO PARTICIPATE IN THE EXCHANGE OFFER

     The liquidity of the outstanding notes may be reduced as a result of the
exchange offer. Upon the consummation of the exchange offer, subject to certain
exceptions, if you do not exchange your outstanding notes for exchange notes in
the exchange offer, you will no longer be entitled to registration rights and
will not be able to offer or sell your outstanding notes, unless the outstanding
notes are subsequently registered under the Securities Act of 1933 (which,
subject to certain limited exceptions, we will have no obligation to do), except
pursuant to an exemption from, or in a transaction not subject to, the
Securities Act of 1933 (including Rule 144A) and applicable state securities
laws.


                                 USE OF PROCEEDS

     We will not receive any cash proceeds from the issuance of the exchange
notes. In consideration for issuing the exchange notes, we will receive in
exchange a like principal amount of outstanding notes. The outstanding notes
surrendered in exchange for the exchange notes will be retired and canceled and
cannot be reissued. Accordingly, the issuance of the exchange notes will not
result in any change in our capitalization.


                       DESCRIPTION OF CERTAIN INDEBTEDNESS

SENIOR CREDIT FACILITY

     On October 22, 1999, we entered into a $50.0 million loan and security
agreement with Bank of America, N.A., as Administrative Agent, Congress
Financial Corporation, and Bank of Oklahoma, N.A. The loan agreement is
available for working capital requirements, general corporate purposes and to
support letters of credit and will terminate on October 22, 2003.

                                       17


     The loan agreement has a combined total commitment for both loans and
letters of credit support of $50.0 million. Loan amounts outstanding under the
loan agreement bear interest at our option at either:

     -    prime plus 0.50%, or
     -    LIBOR plus 2.50%.

The prime rate loans can vary between prime plus 0.25% and prime plus 0.75% and
the LIBOR rates can vary between LIBOR plus 2.00% and LIBOR plus 2.75% based on
a leverage ratio calculation which takes into consideration our total amount of
indebtedness outstanding minus cash and cash equivalents plus the unfunded
amount of letters of credit divided by EBITDA.

     The loan agreement contains covenants which require minimum adjusted
tangible net worth, fixed charge coverage ratio and limits annual capital
expenditures. The revolving loan facility prohibits payment of dividends.

     At March 31, 2002, no amounts had been drawn down against the loan
agreement but $16.2 million of availability had been used to support letters of
credit that have been issued.

     The repayment of loans under the loan agreement is secured by the
following:

     -    accounts receivable,
     -    inventory,
     -    certain contract rights,
     -    certain intangible rights, e.g. patents and copyrights,
     -    certain barge drilling rigs located in the Gulf of Mexico,
     -    stock of subsidiaries,
     -    all money and securities held by the Administrative Agent, and
     -    books and records relating to the above.

     Borrowings under the loan agreement can be used for:

     -    general corporate purposes, including capital expenditures for rig
          refurbishments and upgrades,
     -    working capital, and
     -    letters of credit.

The amounts of money we can borrow and letters of credit we can issue under the
loan agreement are subject to a borrowing base formula which limits the amount
of loans and letters of credit based on:

     -    eligible accounts receivable,
     -    50% of rig materials and supplies, and
     -    the value of certain barge drilling rigs located in the Gulf of
          Mexico.

     We are obligated to pay the lenders certain fees on the average daily
unadvanced portion of the lenders' loan commitments, and certain fees for
issuance of letters of credit.

     Future advances under the loan agreement are conditioned on, among other
things:

     -    the representations and warranties contained in the loan agreement
          being true and correct on the date of the loan,
     -    the delivery of certain opinions and certificates,
     -    environmental and insurance reviews, and
     -    no material changes having occurred in our financial condition,
          operations or properties.


9 3/4% SENIOR NOTES DUE 2006

                                       18


     We currently have outstanding approximately $214.2 million of our 9 3/4%
Senior Notes due 2006. We are obligated to make certain payments on these
outstanding notes and may be called to repurchase these notes if certain change
of control events occur.


5 1/2% CONVERTIBLE SUBORDINATED NOTES DUE 2004

     We currently have outstanding approximately $124.5 million of our 5 1/2%
Convertible Subordinated Notes due 2004. The principal and accrued interest due
on these notes will be payable in full in July of 2004. This indebtedness is
subordinated to the indebtedness represented by the 9 3/4 % Senior Notes due
2006 and the outstanding notes.


                        DESCRIPTION OF THE EXCHANGE NOTES

General

     The exchange notes will be issued pursuant to an indenture entered into
between the Company and JPMorgan Chase Bank, as trustee (the "Trustee"). The
terms of the exchange notes include those stated in the indenture and those made
part of the indenture by reference to the Trust Indenture Act of 1939, as
amended (the "Trust Indenture Act"). The exchange notes are subject to all such
terms, and holders of exchange notes are referred to the indenture and the Trust
Indenture Act for a statement of those terms. The following summary of certain
provisions of the indenture does not purport to be complete and is qualified in
its entirety by reference to the indenture, including the definitions of certain
terms used below. A copy of each of the proposed form of indenture and the
registration rights agreement have been filed as exhibits to the registration
statement of which this prospectus is a part and are available from us upon
request. See "Where You Can Find Additional Information." The definitions of
certain terms used in the following summary are set forth below under "--
Certain Definitions."

     As used below in this "Description of the Exchange Notes," references to
"we," "ours," "us" and the "Company" mean Parker Drilling Company, but not any
of its Subsidiaries.

     The indenture provides for the issuance of up to $250 million principal
amount of 10 1/8% Senior Notes due 2009, Series B, which are the exchange notes
that we propose to issue in connection with this exchange offer. The indenture
also provides us the flexibility of issuing additional exchange notes in the
future; however, any issuance of any additional exchange notes would be subject
to the covenant described under "-- Certain Covenants -- Incurrence of
Indebtedness and Issuance of Preferred Stock." The exchange notes, any such
additional exchange notes are collectively referred to as the "exchange notes"
in this "Description of the Exchange Notes."

     The exchange notes will rank senior in right of payment to all of our
subordinated indebtedness. The exchange notes will rank pari passu in right of
payment with all of our other senior indebtedness, including the outstanding
notes. However, the exchange notes will be unsecured obligations of the Company
and the borrowings under the senior credit facility are secured by liens on our
accounts receivable, inventory and certain barge rigs located in the Gulf of
Mexico. As a result, the indebtedness under the senior credit facility will
effectively rank senior to the exchange notes to the extent of the security
therefor. The exchange notes will be fully and unconditionally guaranteed on a
senior unsecured basis by the Subsidiary Guarantors. See "-- Subsidiary
Guarantees."

     As of the date of the indenture, all of our Significant Subsidiaries were
Restricted Subsidiaries. However, certain of our other Subsidiaries were
designated as Unrestricted Subsidiaries at the time the indenture was executed.
At March 31, the Unrestricted Subsidiaries had total assets of approximately
$31.2 million. In addition, subject to the requirements of the indenture, we
will be able to designate other current or future Subsidiaries as Unrestricted
Subsidiaries. Unrestricted Subsidiaries will not be subject to the restrictive
covenants set forth in the indenture.

     Any outstanding notes not tendered in the exchange offer and the exchange
notes will be treated as a single class of debt securities under the indenture.

                                       19


PRINCIPAL, MATURITY AND INTEREST

     The exchange notes will be limited in aggregate principal amount to $250
million and will mature on November 15, 2009. The indenture permits the issuance
of additional exchange notes as described above under "--General." Interest on
the exchange notes will accrue at the rate of 10 1/8% per annum and will be
payable semi-annually in arrears on May 15 and November 15 commencing on
November 15, 2002, to holders of record on the immediately preceding May 1 and
November 1. Interest on the exchange notes will accrue from the most recent date
to which interest has been paid or, if no interest has been paid, from the issue
date. Interest will be computed on the basis of a 360-day year comprised of
twelve 30-day months. Principal, premium, if any, and interest and Liquidated
Damages (as defined below under "--Registration Rights; Liquidated Damages") on
the exchange notes will be payable at the office or agency of the Company
maintained for such purpose within the United States or, in the case of exchange
notes not in book-entry form, at the option of the Company, payment of interest
and Liquidated Damages may be made by check mailed to the holders of the
exchange notes at their respective addresses set forth in the register of
holders of exchange notes; provided that all payments with respect to exchange
notes in book-entry form, and with respect to exchange notes in certificated
form, the holders of which have given wire transfer instructions to the Company,
will be required to be made by wire transfer of immediately available funds to
the accounts specified by the holders thereof. See "--Book-Entry, Delivery and
Form." Until otherwise designated by the Company, the Company's office or agency
in New York will be the office of the Trustee maintained for such purpose. The
exchange notes will be issued in denominations of $1,000 and integral multiples
thereof.


OPTIONAL REDEMPTION

     The exchange notes will not be redeemable at the Company's option prior to
November 15, 2004. Thereafter, the exchange notes will be subject to redemption
at the option of the Company, in whole or in part, upon not less than 30 nor
more than 60 days' notice, at the redemption prices (expressed as percentages of
principal amount) set forth below plus accrued and unpaid interest and
Liquidated Damages thereon to the applicable redemption date, if redeemed during
the twelve-month period beginning on November 15, of the years indicated below:




YEAR                               PERCENTAGE
- ----                               ----------
                                
2004                                 105.0625%
2005                                 103.3750%
2006                                 101.6875%
2007 and thereafter                  100.0000%



SELECTION AND NOTICE

     If less than all of the exchange notes are to be redeemed at any time,
selection of exchange notes for redemption will be made by the Trustee on a pro
rata basis, by lot or by such method as the Trustee shall deem fair and
appropriate; provided that no exchange notes of $1,000 or less shall be redeemed
in part. Notices of redemption shall be mailed by first class mail at least 30
but not more than 60 days before the redemption date to each holder of exchange
notes to be redeemed at its registered address. If any exchange note is to be
redeemed in part only, the notice of redemption that relates to such exchange
note shall state the portion of the principal amount thereof to be redeemed. A
exchange note in principal amount equal to the unredeemed portion thereof will
be issued in the name of the holder thereof upon cancellation of the original
exchange note. On and after the redemption date, interest ceases to accrue on
exchange notes or portions of them called for redemption.


MANDATORY REDEMPTION

     Except as set forth below under "-- Repurchase at the Option of Holders,"
we are not required to make mandatory redemption or sinking fund payments with
respect to the exchange notes.

                                       20


SUBSIDIARY GUARANTEES

     Each of our Significant Subsidiaries (other than any Exempt Foreign
Subsidiary, as designated by the Company) on the Issue Date and each other
Restricted Subsidiary that provides a guarantee under the senior credit facility
will become a Subsidiary Guarantor under the indenture. Each Subsidiary
Guarantor will unconditionally guarantee on a senior basis, jointly and
severally, the full and prompt performance of our obligations under the
indenture and the exchange notes, including the payment of principal and
interest on the exchange notes. The obligations of each Subsidiary Guarantor
under its Subsidiary Guarantee will be limited to the maximum amount as will,
after giving effect to all other contingent and fixed liabilities of such
Subsidiary Guarantor and after giving effect to any collections from or payments
made by or on behalf of any other Subsidiary Guarantor in respect of the
obligations of such other Subsidiary Guarantor under its Subsidiary Guarantee or
pursuant to its contribution obligations under the indenture, result in the
obligations of such Subsidiary Guarantor under the Subsidiary Guarantee not
constituting a fraudulent conveyance or fraudulent transfer under federal or
state law. The terms of the Subsidiary Guarantees will provide that, for
purposes of such limitations and the applicable fraudulent conveyance laws, any
indebtedness of a Subsidiary Guarantor incurred from time to time pursuant to
the senior credit facility and secured by a perfected Lien on the assets of such
Subsidiary Guarantor (assuming, for purposes of such determination, that the
incurrence of any such indebtedness and the granting of any such security
interest did not violate any such fraudulent conveyance laws) shall be deemed,
to the extent of the value of the assets subject to such Lien, to have been
incurred prior to the incurrence by such Subsidiary Guarantor of liability under
its Subsidiary Guarantee. See "Risk Factors - Federal and state statutes allow
courts under specific circumstances, to void guarantees and require holders of
the notes to return payments received from guarantors."

     The indenture provides that no Subsidiary Guarantor may consolidate with or
merge with or into (whether or not such Subsidiary Guarantor is the surviving
Person) another Person (other than the Company or another Subsidiary Guarantor),
whether or not affiliated with such Subsidiary Guarantor, unless (i) subject to
the provisions of the following paragraph, the Person formed by or surviving any
such consolidation or merger (if other than such Subsidiary Guarantor) shall
execute a Subsidiary Guarantee in accordance with the terms of the indenture;
(ii) immediately after giving effect to such transaction, no Default or Event of
Default exists; (iii) such Subsidiary Guarantor, or any Person formed by or
surviving any such consolidation or merger, would have Consolidated Net Worth
(immediately after giving effect to such transaction), equal to or greater than
the Consolidated Net Worth of such Subsidiary Guarantor immediately preceding
the transaction; (iv) the Company would be permitted by virtue of the Company's
pro forma Fixed Charge Coverage Ratio, immediately after giving effect to such
transaction, to incur at least $1.00 of additional Indebtedness pursuant to the
Fixed Charge Coverage Ratio test set forth in the covenant described above under
the caption "-- Certain Covenants -- Incurrence of Indebtedness and Issuance of
Preferred Stock"; and (v) such transaction does not violate any of the covenants
described under "-- Certain Covenants."

     The indenture provides that in the event of (i) the designation of any
Subsidiary Guarantor as an Unrestricted Subsidiary or (ii) a sale or other
disposition of all of the Capital Stock or all or substantially all of the
properties or assets of any Subsidiary Guarantor to a third party or an
Unrestricted Subsidiary, by way of merger, consolidation or otherwise, in any
case, in a transaction or manner that does not violate any of the covenants in
the indenture, then such Subsidiary Guarantor will be released from and relieved
of any obligations under its Subsidiary Guarantee, provided that any Net
Proceeds of such sale or other disposition are applied in accordance with the
covenant described under the caption "-- Repurchase at the Option of Holders --
Asset Sales," and provided, further, however, that any such termination shall
occur only to the extent that all obligations of such Subsidiary Guarantor under
all of its guarantees of, and under all of its pledges of assets or other
security interests that secure, any other Indebtedness of the Company or its
Restricted Subsidiaries shall also terminate upon such release, sale or
disposition.

     The indenture provides that (a) if the Company or any of its Restricted
Subsidiaries shall, after the Issue Date, (i) transfer or cause to be
transferred, any assets, businesses, divisions, real property or equipment
having an aggregate fair market or book value in excess of $1 million to any
Restricted Subsidiary that is not a Subsidiary Guarantor or (ii) make any
Investment having an aggregate fair market or book value in excess of $1 million
in any Restricted Subsidiary that is not a Subsidiary Guarantor, or (b) if,
after the Issue Date, any Restricted Subsidiary that is not a Subsidiary
Guarantor shall provide a guarantee under the senior credit facility or own any
assets or properties having an aggregate fair market or book value in excess of
$1 million, then the Company shall cause such Restricted Subsidiary (other than
any Exempt Foreign Subsidiary) to execute a Subsidiary Guarantee, in accordance

                                       21


with the terms of the indenture. In addition, the Company shall not permit any
of its Restricted Subsidiaries, other than a Subsidiary Guarantor, directly or
indirectly, to (i) incur, guarantee or secure through the granting of Liens the
payment of any Indebtedness of the Company or (ii) pledge any intercompany notes
representing obligations of any of its Restricted Subsidiaries to secure the
payment of any Indebtedness of the Company, in each case, unless the Company
shall cause such Restricted Subsidiary to execute a Subsidiary Guarantee in
accordance with the terms of the indenture.


REPURCHASE AT THE OPTION OF HOLDERS

Change of Control

     Upon the occurrence of a Change of Control, each holder of exchange notes
will have the right to require the Company to repurchase all or any part (equal
to $1,000 or an integral multiple thereof) of such holder's exchange notes on a
Business Day (the "Change of Control Payment Date") not more than 60 nor less
than 30 days following such Change of Control, pursuant to the offer described
below (the "Change of Control Offer") at an offer price in cash equal to 101% of
the aggregate principal amount thereof plus accrued and unpaid interest and
Liquidated Damages thereon to the date of purchase (the "Change of Control
Payment"). Within 30 days following any Change of Control, the Company will mail
a notice to each holder describing the transaction or transactions that
constitute the Change of Control and offering to repurchase all of the exchange
notes then outstanding pursuant to the procedures required by the indenture and
described in such notice. The Company will comply with the requirements of Rule
14e-1 under the Securities Exchange Act of 1934 and any other securities laws
and regulations thereunder to the extent such laws and regulations are
applicable in connection with the repurchase of the exchange notes as a result
of a Change of Control. The Change of Control Offer is required to remain open
for at least 20 Business Days and until the close of business on the fifth
Business Day prior to the Change of Control Payment Date.

     On the Change of Control Payment Date, the Company will, to the extent
lawful, (i) accept for payment all exchange notes or portions thereof properly
tendered pursuant to the Change of Control Offer, (ii) deposit with the Paying
Agent an amount equal to the Change of Control Payment in respect of all
exchange notes or portions thereof so tendered and (iii) deliver or cause to be
delivered to the Trustee the exchange notes so accepted, together with an
Officers' Certificate stating the aggregate principal amount of exchange notes
or portions thereof being purchased by the Company. The Paying Agent will
promptly mail or otherwise deliver to each holder of exchange notes so tendered
the Change of Control Payment for such exchange notes, and the Trustee will
promptly authenticate and mail (or cause to be transferred by book entry) to
each holder a exchange note equal in principal amount to any unpurchased portion
of the exchange notes surrendered, if any; provided that each such exchange note
will be in a principal amount of $1,000 or an integral multiple thereof. The
Company will publicly announce the results of the Change of Control Offer on or
as soon as practicable after the Change of Control Payment Date.

     The Change of Control provisions described above will be applicable whether
or not any other provisions of the indenture are applicable. Except as described
above with respect to a Change of Control, the indenture does not contain
provisions that permit the holders of the exchange notes to require that the
Company repurchase or redeem the exchange notes in the event of a takeover,
recapitalization or similar transaction.

     The occurrence of a Change of Control may result in a default under the
senior credit facility and give the Lenders the right to require the Company to
repay all Indebtedness outstanding thereunder. There can be no assurance that
the Company will have available funds sufficient to repay all Indebtedness owing
under the senior credit facility or to fund the purchase of the exchange notes
upon a Change of Control. In the event a Change of Control occurs at a time when
the Company does not have available funds sufficient to pay for all of the
exchange notes delivered by holders seeking to accept the Company's repurchase
offer, an Event of Default would occur under the indenture.

     The Company will not be required to make a Change of Control Offer upon a
Change of Control if a third party makes the Change of Control Offer in the
manner, at the times and otherwise in compliance with the requirements set forth
in the indenture applicable to a Change of Control Offer made by the Company and
purchases all exchange notes validly tendered and not withdrawn under such
Change of Control Offer.

                                       22


     "Change of Control" means the occurrence of any of the following: (i) the
sale, lease, transfer, conveyance or other disposition (other than by way of
merger or consolidation), in one or a series of related transactions, of all or
substantially all of the assets of the Company and its Restricted Subsidiaries
taken as a whole to any person (as such term is used in Section 13(d)(3) of the
Securities Exchange Act of 1934); (ii) the Company consolidates with or merges
into another Person or any Person consolidates with, or merges into, the
Company, in any such event pursuant to a transaction in which the outstanding
voting stock of the Company is changed into or exchanged for cash, securities or
other property, other than any such transaction where (a) the outstanding voting
stock of the Company is changed into or exchanged for voting stock of the
surviving or resulting Person that is Qualified Capital Stock and (b) the
holders of the voting stock of the Company immediately prior to such transaction
own, directly or indirectly, not less than a majority of the voting stock of the
surviving or resulting Person immediately after such transaction; (iii) the
adoption of a plan relating to the liquidation or dissolution of the Company;
(iv) the consummation of any transaction (including, without limitation, any
merger or consolidation) the result of which is that any person (as defined
above) becomes the "beneficial owner" (as such term is defined in Rule 13d-3 and
Rule 13d-5 under the Exchange Act), directly or indirectly, of more than 50% of
the voting stock of the Company; or (v) the first day on which a majority of the
members of the Board of Directors of the Company are not Continuing Directors.
For purposes of this definition, any transfer of an equity interest of an entity
that was formed for the purpose of acquiring voting stock of the Company will be
deemed to be a transfer of such portion of such voting stock as corresponds to
the portion of the equity of such entity that has been so transferred.

     "Continuing Directors" means, as of any date of determination, any member
of the Board of Directors of the Company who (i) was a member of such Board of
Directors on the issue date of the Series D Notes, March 11, 1998, or (ii) was
nominated for election or elected to such Board of Directors with the approval
of a majority of the Continuing Directors who were members of such Board at the
time of such nomination or election.

     The definition of Change of Control includes a phrase relating to the sale,
lease, transfer, conveyance or other disposition of "all or substantially all"
of the assets of the Company and its Subsidiaries taken as a whole. Although
there is a developing body of case law interpreting the phrase "substantially
all," there is no precise established definition of the phrase under applicable
law. Accordingly, the ability of a holder of exchange notes to require the
Company to repurchase such exchange notes as a result of a sale, lease,
transfer, conveyance or other disposition of less than all of the assets of the
Company and its Subsidiaries taken as a whole to another Person or group may be
uncertain.


Asset Sales

     The indenture provides that the Company will not, and will not permit any
of its Restricted Subsidiaries to, engage in an Asset Sale unless (i) the
Company (or the Restricted Subsidiary, as the case may be) receives
consideration at the time of such Asset Sale at least equal to the fair market
value (evidenced by a resolution of the Board of Directors set forth in an
Officers' Certificate delivered to the Trustee) of the assets or Equity
Interests issued or sold or otherwise disposed of and (ii) at least 75% of the
consideration therefor received by the Company or such Restricted Subsidiary is
in the form of cash or Cash Equivalents; provided that the amount of (x) any
liabilities (as shown on the Company's or such Restricted Subsidiary's most
recent balance sheet) of the Company or any Restricted Subsidiary (other than
contingent liabilities and liabilities that are Subordinated Indebtedness or
otherwise by their terms subordinated to the exchange notes or the Subsidiary
Guarantees) that are assumed by the transferee of any such assets pursuant to a
customary novation agreement that releases the Company or such Restricted
Subsidiary from further liability, and (y) any notes or other obligations
received by the Company or any such Restricted Subsidiary from such transferee
that are converted by the Company or such Restricted Subsidiary into cash within
180 days of closing such Asset Sale (to the extent of the cash received), shall
be deemed to be cash for purposes of this provision, and provided further, that
the Company may engage in the sale or transfer of properties or assets,
including two drilling rigs and related inventories and equipment and a contract
with Tengizchevroil, to AralParker CJSC in consideration of a note payable by
AralParker CJSC in a principal amount of up to $50 million.

     Within 365 days after the receipt of any Net Proceeds from any Asset Sale,
the Company may (i) apply all or any of the Net Proceeds therefrom to repay
Indebtedness (other than Subordinated Indebtedness) of the Company or any
Restricted Subsidiary, provided, in each case, that the related loan commitment
of any revolving credit facility or other borrowing (if any) is thereby
permanently reduced by the amount of such Indebtedness so repaid, or

                                       23


(ii) invest all or any part of the Net Proceeds thereof in properties and other
capital assets that replace the properties or other capital assets that were the
subject of such Asset Sale or in other properties or other capital assets that
will be used in the business of the Company and its Restricted Subsidiaries.
Pending the final application of any such Net Proceeds, the Company may
temporarily reduce borrowings under any revolving credit facility or otherwise
invest such Net Proceeds in any manner that is not prohibited by the indenture.
Any Net Proceeds from Asset Sales that are not applied or invested as provided
in the first sentence of this paragraph will be deemed to constitute "Excess
Proceeds." When the aggregate amount of Excess Proceeds equals or exceeds $15
million, the Company will be required to (i) make an offer to purchase (the
"Series D Asset Sale Offer") the Series D Notes, if any are then outstanding, at
a price equal to 100% of the principal amount of the Series D Notes, plus
accrued and unpaid interest and (ii) in the event that any Excess Proceeds are
not applied to a Series D Asset Sale Offer, to make an offer to all holders of
exchange notes (an "Asset Sale Offer") to purchase the maximum principal amount
of exchange notes that may be purchased out of any Excess Proceeds, at an offer
price in cash in an amount equal to 100% of the principal amount thereof, plus
accrued and unpaid interest and Liquidated Damages thereon to the date of
purchase, in accordance with the procedures set forth in the indenture for the
exchange notes. To the extent that the aggregate amount of outstanding notes and
exchange notes tendered pursuant to a Series D Asset Sale Offer and an Asset
Sale Offer, respectively, is less than the Excess Proceeds, the Company may use
any remaining Excess Proceeds for general corporate purposes. If the aggregate
principal amount of exchange notes tendered by holders thereof exceeds the
amount of Excess Proceeds not applied to a Series D Asset Sale Offer, the
Trustee shall select the exchange notes to be purchased on a pro rata basis.
Upon completion of such offer to purchase, the amount of Excess Proceeds shall
be reset at zero.

     The Company will not permit any Restricted Subsidiary to enter into or
suffer to exist any agreement (other than the Series D indenture) that would
place any restriction of any kind (other than pursuant to law or regulation) on
the ability of the Company to make an Asset Sale Offer following any Asset Sale.
The Company will comply with Rule 14e-1 under the Securities Exchange Act of
1934, and any other securities laws and regulations thereunder, if applicable,
in the event that an Asset Sale occurs and the Company is required to purchase
exchange notes as described above.


CERTAIN COVENANTS

Restricted Payments

     The indenture provides that the Company will not, and will not permit any
of its Restricted Subsidiaries to, directly or indirectly: (i) declare or pay
any dividend or make any other payment or distribution on account of the
Company's or any of its Restricted Subsidiaries' Equity Interests (including,
without limitation, any payment in connection with any merger or consolidation
involving the Company) or to the direct or indirect holders of the Company's
Equity Interests in their capacity as such (other than dividends or
distributions payable in Equity Interests (other than Disqualified Stock) of the
Company or dividends or distributions payable to the Company or any Wholly Owned
Restricted Subsidiary of the Company); (ii) purchase, redeem or otherwise
acquire or retire for value any Equity Interests of the Company or any Affiliate
of the Company (other than (A) any such Equity Interests owned by the Company or
any Wholly Owned Restricted Subsidiary of the Company that is a Subsidiary
Guarantor and (B) Employee Stock Repurchases); (iii) make any principal payment
on, or purchase, redeem, defease or otherwise acquire or retire for value any
Subordinated Indebtedness, except in accordance with the mandatory redemption or
repayment provisions set forth in the original documentation governing such
Indebtedness or as otherwise permitted below; or (iv) make any Restricted
Investment (all such payments and other actions set forth in clauses (i) through
(iv) above being collectively referred to as "Restricted Payments"), unless, at
the time of and after giving effect to such Restricted Payment:

          (a) no Default or Event of Default shall have occurred and be
     continuing or would occur as a consequence thereof;

          (b) the Company would, at the time of such Restricted Payment and
     after giving pro forma effect thereto as if such Restricted Payment had
     been made at the beginning of the applicable four-quarter period, have been
     permitted to incur at least $1.00 of additional Indebtedness (other than
     Permitted Indebtedness) pursuant to the Fixed Charge Coverage Ratio test
     set forth in the first paragraph of the

                                       24


     covenant described below under the caption "-- Incurrence of Indebtedness
     and Issuance of Preferred Stock"; and

          (c) such Restricted Payment, together with the aggregate of all other
     Restricted Payments made by the Company and its Restricted Subsidiaries
     after the Series A/B Issue Date (excluding Restricted Payments permitted by
     clauses (w), (y) and (z) of the next succeeding paragraph) is less than the
     sum of (i) 50% of the Consolidated Net Income of the Company for the period
     (taken as one accounting period) from the beginning of the first fiscal
     quarter commencing after the Series A/B Issue Date to the end of the
     Company's most recently ended fiscal quarter for which internal financial
     statements are available at the time of such Restricted Payment (or, if
     such Consolidated Net Income for such period is a deficit, less 100% of
     such deficit), plus (ii) 100% of the aggregate Net Equity Proceeds (A)
     received by the Company from the issue or sale, subsequent to the Series
     A/B Issue Date, of Qualified Capital Stock of the Company or (B) of any
     other Equity Interests or debt securities of the Company that have been
     issued subsequent to the Series A/B Issue Date and that have been converted
     into such Qualified Capital Stock (other than any Qualified Capital Stock
     sold to a Restricted Subsidiary of the Company or issued upon conversion of
     the Convertible Preferred Stock), plus (iii) to the extent not otherwise
     included in Consolidated Net Income, the net reduction in Investments in
     Unrestricted Subsidiaries and Affiliates resulting from dividends,
     repayments of loans or advances, or other transfers of assets (including
     reductions in guarantees), in each case to the Company or a Restricted
     Subsidiary after the Series A/B Issue Date from any Unrestricted Subsidiary
     or Affiliate or from the redesignation of an Unrestricted Subsidiary as a
     Restricted Subsidiary (valued as provided below), plus (iv) $15 million.

     The foregoing provisions will not prohibit any of the following: (w) any
purchase, redemption or other acquisition or retirement, in each case at a price
less than par, of up to $75 million in aggregate principal amount of the
Company's 5 1/2% Convertible Subordinated Notes due 2004, prior to their stated
maturity; (x) the payment of any dividend within 60 days after the date of
declaration thereof, if at said date of declaration such payment would have
complied with the provisions of the indenture; (y) the redemption, repurchase,
retirement or other acquisition of any Equity Interests of the Company in
exchange for, or out of the Net Equity Proceeds of, the substantially concurrent
sale (other than to a Restricted Subsidiary of the Company) of Qualified Capital
Stock of the Company (other than any Disqualified Stock); provided that the
amount of any such Net Equity Proceeds that are utilized for any such
redemption, repurchase, retirement or other acquisition shall be excluded from
clause (c)(ii) of the preceding paragraph; and (z) the defeasance, redemption or
repurchase of Subordinated Indebtedness with the net cash proceeds from an
incurrence of Permitted Refinancing Indebtedness or the substantially concurrent
sale (other than to a Restricted Subsidiary of the Company) of Qualified Capital
Stock of the Company; provided that the amount of any such net cash proceeds
that are utilized for any such redemption, repurchase, retirement or other
acquisition shall be excluded from clause (c)(ii) of the preceding paragraph.

     For purposes of the foregoing provisions, the amount of any Restricted
Payment (other than cash) shall be the fair market value (evidenced by a
resolution of the Board of Directors set forth in an Officers' Certificate
delivered to the Trustee) on the date of the Restricted Payment of the asset(s)
proposed to be transferred by the Company or such Restricted Subsidiary, as the
case may be, pursuant to the Restricted Payment. Not later than the date of
making any Restricted Payment, the Company shall deliver to the Trustee an
Officers' Certificate stating that such Restricted Payment is permitted and
setting forth the basis upon which the calculations required by this "Restricted
Payments" covenant were computed, which calculations may be based upon the
Company's latest available financial statements.

     The Board of Directors may designate any Restricted Subsidiary to be an
Unrestricted Subsidiary if such designation would be permitted by the provisions
of this "Restricted Payments" covenant and if such Restricted Subsidiary
otherwise meets the definition of an Unrestricted Subsidiary. For purposes of
making such determination, all outstanding Investments by the Company and its
Restricted Subsidiaries (except to the extent repaid in cash prior to such
designation) in the Restricted Subsidiary so designated will be deemed to be
Restricted Payments at the time of such designation and will reduce the amount
available for Restricted Payments under paragraph (c) of this covenant. All such
outstanding Investments will be deemed to constitute Investments in an amount
equal to the Fair Market Value of such Investments at the time of such
designation.

                                       25


Incurrence of Indebtedness and Issuance of Preferred Stock

     The indenture provides that the Company will not, and will not permit any
of its Restricted Subsidiaries to, directly or indirectly, create, incur, issue,
assume, guarantee or otherwise become directly or indirectly liable,
contingently or otherwise, with respect to (collectively, "incur") any
Indebtedness (including Acquired Indebtedness but excluding any Permitted
Indebtedness) and that the Company will not issue any Disqualified Stock and
will not permit any of its Restricted Subsidiaries to issue any shares of
preferred stock; provided, however, that the Company may incur Indebtedness
(including Acquired Indebtedness) or issue shares of Disqualified Stock, and any
Restricted Subsidiary may incur Indebtedness (including Acquired Indebtedness),
if the Fixed Charge Coverage Ratio for the Company's most recently ended four
full fiscal quarters for which internal financial statements are available
immediately preceding the date on which such additional Indebtedness is incurred
or such Disqualified Stock is issued would have been at least 2.0 to 1.0,
determined on a pro forma basis (including a pro forma application of the net
proceeds therefrom), as if the additional Indebtedness had been incurred, or the
Disqualified Stock had been issued, as the case may be, at the beginning of such
four-quarter period.

     The indenture also provides that neither the Company nor any Subsidiary
Guarantor will, directly or indirectly, in any event incur any Indebtedness that
by its terms (or by the terms of any agreement governing such Indebtedness) is
subordinated to any other Indebtedness of the Company or such Subsidiary
Guarantor, as the case may be, unless such Indebtedness is also by its terms (or
by the terms of any agreement governing such Indebtedness) made expressly
subordinate to the exchange notes or the Subsidiary Guarantee of such Subsidiary
Guarantor, as the case may be, to the same extent and in the same manner as such
Indebtedness is subordinated pursuant to subordination provisions that are most
favorable to the holders of any other Indebtedness of the Company or such
Subsidiary Guarantor, as the case may be.


Liens

     The indenture provides that the Company will not, and will not permit any
Restricted Subsidiary to, directly or indirectly, create, incur, assume, affirm
or suffer to exist or become effective any Lien of any kind, except for
Permitted Liens, upon any of their respective property or assets, whether now
owned or acquired after the Issue Date, or any income, profits or proceeds
therefrom, to secure (a) any Indebtedness of the Company or such Restricted
Subsidiary (if it is not also a Subsidiary Guarantor), unless prior to, or
contemporaneously therewith, the exchange notes are equally and ratably secured,
or (b) any Indebtedness of any Subsidiary Guarantor, unless prior to, or
contemporaneously therewith, the Subsidiary Guarantees are equally and ratably
secured; provided, however, that if such Indebtedness is expressly subordinated
to the exchange notes or the Subsidiary Guarantees, the Lien securing such
Indebtedness will be subordinated and junior to the Lien securing the exchange
notes or the Subsidiary Guarantees, as the case may be, with the same relative
priority as such Indebtedness has with respect to the exchange notes or the
Subsidiary Guarantees. The foregoing covenant will not apply to any Lien
securing Acquired Indebtedness, provided that any such Lien extends only to the
property or assets that were subject to such Lien prior to the related
acquisition by the Company or such Restricted Subsidiary and was not created,
incurred or assumed in contemplation of such transaction. The incurrence of
additional secured Indebtedness by the Company and its Restricted Subsidiaries
is subject to further limitations on the incurrence of Indebtedness as described
under "-- Incurrence of Indebtedness and Issuance of Preferred Stock."


Sale-and-Leaseback Transactions

     The indenture provides that the Company will not, and will not permit any
of its Restricted Subsidiaries to, enter into any sale-and-leaseback
transaction; provided that the Company or any Restricted Subsidiary, as
applicable, may enter into a sale-and-leaseback transaction if (i) the Company
could have (a) incurred Indebtedness in an amount equal to the Attributable
Indebtedness relating to such sale-and-leaseback transaction pursuant to the
Fixed Charge Coverage Ratio test set forth in the first paragraph of the
covenant described above under the caption "-- Incurrence of Additional
Indebtedness and Issuance of Preferred Stock" and (b) incurred a Lien to secure
such Indebtedness pursuant to the covenant described above under the caption "--
Liens," (ii) the gross cash proceeds of such sale-and-leaseback transaction are
at least equal to the fair market value (as determined in good faith by the
Board of Directors and set forth in an Officers' Certificate delivered to the
Trustee) of the property that is the subject of such sale-and-leaseback
transaction and (iii) the transfer of assets in such sale-and-leaseback
transaction is

                                       26


permitted by, and the Company applies the proceeds of such transaction in
compliance with, the covenant described above under the caption "-- Repurchase
at the Option of Holders -- Asset Sales."


Transactions with Affiliates

     The indenture provides that the Company will not, and will not permit any
of its Restricted Subsidiaries to, (a) sell, lease, transfer or otherwise
dispose of any of its properties, assets or securities to, (b) purchase or lease
any property, assets or securities from, (c) make any Investment in, or (d)
enter into or suffer to exist any other transaction or series of related
transactions with, or for the benefit of, any Affiliate of the Company unless
(i) such transaction or series of transactions is on terms that are no less
favorable to the Company or such Restricted Subsidiary, as the case may be, than
those that would be available in a comparable arm's length transaction with an
unrelated third party, (ii) with respect to any one transaction or series of
related transactions involving aggregate payments in excess of $1 million, the
Company delivers an Officers' Certificate to the Trustee certifying that such
transaction or series of related transactions complies with clause (i) above,
and (iii) with respect to a transaction or series of related transactions
involving payments in excess of $5 million, the Company delivers an Officers'
Certificate to the Trustee certifying that (A) such transaction or series of
related transactions complies with clause (i) above and (B) such transaction or
series of related transactions has been approved by a majority of the
Disinterested Directors of the Company; provided, however, that the foregoing
restriction shall not apply to (u) any arrangements in effect on the Series A/B
Issue Date, (v) transactions between or among the Company and its Wholly Owned
Restricted Subsidiaries, (w) loans or advances to officers, directors and
employees of the Company or any Restricted Subsidiary made in the ordinary
course of business and consistent with past practices of the Company and its
Restricted Subsidiaries in an aggregate amount not to exceed $1 million
outstanding at any one time, (x) indemnities of officers, directors and
employees of the Company or any Restricted Subsidiary permitted by bylaw or
statutory provisions, (y) the payment of reasonable and customary regular fees
to directors of the Company or any of its Restricted Subsidiaries who are not
employees of the Company or any Affiliate and (z) the Company's employee
compensation and other benefit arrangements.


Issuances and Sales of Capital Stock of Wholly Owned Subsidiaries

     The indenture provides that the Company (i) will not, and will not permit
any Wholly Owned Restricted Subsidiary of the Company to, transfer, convey,
sell, or otherwise dispose of any Capital Stock of any Wholly Owned Restricted
Subsidiary of the Company to any Person (other than the Company or a Wholly
Owned Restricted Subsidiary of the Company), unless (a) such transfer,
conveyance, sale, or other disposition is of all the Capital Stock of such
Wholly Owned Restricted Subsidiary and (b) the cash Net Proceeds from such
transfer, conveyance, sale, or other disposition are applied in accordance with
the covenant described above under the caption "-- Repurchase at the Option of
Holders -- Asset Sales," and (ii) will not permit any Wholly Owned Restricted
Subsidiary of the Company to issue any of its Equity Interests to any Person
other than to the Company or a Wholly Owned Restricted Subsidiary of the
Company; except, in the case of both clauses (i) and (ii) above, with respect to
dispositions or issuances by a Wholly Owned Restricted Subsidiary of the Company
as contemplated in clauses (i) and (ii) of the definition of "Wholly Owned
Restricted Subsidiary."


Dividend and Other Payment Restrictions Affecting Subsidiaries

     The indenture provides that the Company will not, and will not permit any
of its Restricted Subsidiaries to, directly or indirectly, create or otherwise
cause or suffer to exist or become effective any encumbrance or restriction on
the ability of any Restricted Subsidiary to (i)(a) pay dividends or make any
other distributions to the Company or any of its Restricted Subsidiaries (1) on
its Capital Stock or (2) with respect to any other interest or participation in,
or measured by, its profits, or (b) pay any indebtedness owed to the Company or
any of its Restricted Subsidiaries, (ii) make loans or advances to the Company
or any of its Restricted Subsidiaries or (iii) transfer any of its properties or
assets to the Company or any of its Restricted Subsidiaries, except for such
encumbrances or restrictions existing under or by reason of (r) Existing
Indebtedness as in effect on the Series A/B Issue Date, (s) the senior credit
facility as in effect as of the Series A/B Issue Date, and any amendments,
modifications, restatements, renewals, increases, supplements, refundings,
replacements or refinancings thereof, provided that such amendments,
modifications, restatements, renewals, increases, supplements, refundings,
replacements or refinancings are no more restrictive with respect to such
dividend and other payment restrictions than those contained in the senior
credit facility as in effect on the Series A/B Issue Date, (t) the indenture,
the exchange notes, the Series D indenture, and the Series D

                                       27


Notes, (u) applicable law, (v) any instrument governing Indebtedness or Capital
Stock of a Person acquired by the Company or any of its Restricted Subsidiaries
as in effect at the time of such acquisition (except to the extent such
Indebtedness was incurred in connection with or in contemplation of such
acquisition), which encumbrance or restriction is not applicable to any Person,
or the properties or assets of any Person, other than the Person, or the
property or assets of the Person, so acquired, provided that, in the case of
Indebtedness, such Indebtedness was permitted by the terms of the Series D
indenture and the indenture to be incurred, (w) by reason of customary
nonassignment provisions in leases entered into in the ordinary course of
business and customary provisions in other agreements that restrict assignment
of such agreements or rights thereunder, (x) customary restrictions contained in
asset sale agreements limiting the transfer of such assets pending the closing
of such sale, (y) purchase money obligations for property acquired in the
ordinary course of business that impose restrictions of the nature described in
clause (iii) above on the property so acquired, or (z) Permitted Refinancing
Indebtedness with respect to any indebtedness referred to in clauses (r), (t)
and (v) above, provided that the restrictions contained in the agreements
governing such Permitted Refinancing Indebtedness are no more restrictive than
those contained in the agreements governing the Indebtedness being refinanced.


Merger, Consolidation or Sale of Assets

     The indenture provides that the Company may not consolidate or merge with
or into (whether or not the Company is the surviving corporation), or sell,
assign, transfer, lease, convey or otherwise dispose of all or substantially all
of its properties or assets in one or more related transactions, to another
Person unless (i) the Company is the surviving corporation or the Person formed
by or surviving any such consolidation or merger (if other than the Company) or
to which such sale, assignment, transfer, lease, conveyance or other disposition
shall have been made is a corporation organized or existing under the laws of
the United States, any state thereof or the District of Columbia; (ii) the
Person formed by or surviving any such consolidation or merger (if other than
the Company) or the Person to which such sale, assignment, transfer, lease,
conveyance or other disposition shall have been made assumes all the obligations
of the Company under the exchange notes and the indenture pursuant to a
supplemental indenture in a form reasonably satisfactory to the Trustee; (iii)
except in the case of a merger of the Company with or into a Wholly Owned
Subsidiary of the Company, immediately after such transaction no Default or
Event of Default exists; and (iv) except in the case of a merger of the Company
with or into a Wholly Owned Subsidiary of the Company, the Company or the Person
formed by or surviving any such consolidation or merger (if other than the
Company), or to which such sale, assignment, transfer, lease, conveyance or
other disposition shall have been made (A) will have Consolidated Net Worth
immediately after the transaction equal to or greater than the Consolidated Net
Worth of the Company immediately preceding the transaction and (B) will, at the
time of such transaction and after giving pro forma effect thereto as if such
transaction had occurred at the beginning of the applicable four-quarter period,
be permitted to incur at least $1.00 of additional Indebtedness (other than
Permitted Indebtedness) pursuant to the Fixed Charge Coverage Ratio test set
forth in the first paragraph of the covenant described above under the caption
"-- Incurrence of Indebtedness and Issuance of Preferred Stock."


Business Activities

     The indenture provides that the Company will not, and will not permit any
Restricted Subsidiary to, engage in any business other than (i) the Drilling
Business, (ii) such other businesses as the Company or its Restricted
Subsidiaries are engaged in on the Series A/B Issue Date and (iii) such other
business activities as are reasonably related or incidental thereto.


Reports

     The indenture provides that, whether or not required by the rules and
regulations of the Commission, so long as any exchange notes are outstanding,
the Company will furnish to the holders of exchange notes (i) all quarterly and
annual financial information that would be required to be contained in a filing
with the Commission on Forms 10-Q and 10-K if the Company were required to file
such Forms, including a "Management's Discussion and Analysis of Financial
Condition and Results of Operations" that describes the consolidated financial
condition and results of operations of the Company and, with respect to the
annual information only, a report thereon by the Company's certified independent
accountants and (ii) all information that would be required to be contained in a
filing with the Commission on Form 8-K if the Company were required to file such
Form. In addition, whether or not required by the rules and regulations of the
Commission, the Company will file a copy of all such information

                                       28


and reports with the Commission for public availability (unless the Commission
will not accept such a filing) and make such information available to securities
analysts and prospective investors upon request. In addition, the Company has
agreed that, for so long as any exchange notes remain outstanding, it will
furnish to the holders and to securities analysts and prospective investors,
upon their request, the information required to be delivered pursuant to Rule
144A(d)(4) under the Securities Act.


EVENTS OF DEFAULT AND REMEDIES

     The indenture provides that each of the following constitutes an Event of
Default: (i) default for 30 days in the payment when due of interest on, or
Liquidated Damages with respect to, the exchange notes; (ii) default in payment
when due of the principal of or premium, if any, on the exchange notes; (iii)
failure by the Company to comply with the provisions described under the caption
"-- Repurchase at the Option of Holders" or "-- Certain Covenants -- Merger,
Consolidation or Sale of Assets"; (iv) failure by the Company for 45 days after
notice to comply with any of its other agreements in the indenture or the
exchange notes; (v) default under any mortgage, indenture or instrument under
which there may be issued or by which there may be secured or evidenced any
Indebtedness for money borrowed by the Company or any of its Restricted
Subsidiaries (or the payment of which is guaranteed by the Company or any of its
Restricted Subsidiaries) whether such Indebtedness or guarantee now exists, or
is created after the date of the indenture, which default (A) is caused by a
failure to pay principal of or premium, if any, or interest on such Indebtedness
prior to the expiration of the grace period provided in such Indebtedness on the
date of such default (a "Payment Default") or (B) results in the acceleration of
such Indebtedness prior to its express maturity and, in each case, the principal
amount of any such Indebtedness, together with the principal amount of any other
such Indebtedness under which there has been a Payment Default or the maturity
of which has been so accelerated, aggregates $7.5 million or more; (vi) failure
by the Company or any of its Subsidiaries to pay final judgments aggregating in
excess of $10.0 million, which judgments are not paid, discharged or stayed for
a period of 60 days; (vii) any Subsidiary Guarantee shall for any reason cease
to be, or be asserted by the Company or any Subsidiary Guarantor, as applicable,
not to be, in full force and effect (except pursuant to the release of any
Subsidiary Guarantee in accordance with the indenture); and (viii) certain
events of bankruptcy or insolvency with respect to the Company or any of its
Restricted Subsidiaries that constitute a Significant Subsidiary or any group of
Restricted Subsidiaries that, taken together, would constitute a Significant
Subsidiary.

     If any Event of Default occurs and is continuing, the Trustee or the
holders of at least 25% in aggregate principal amount of the then outstanding
exchange notes may declare all the exchange notes to be due and payable
immediately. Notwithstanding the foregoing, in the case of an Event of Default
arising from certain events of bankruptcy or insolvency, with respect to the
Company, any Restricted Subsidiary that constitutes a Significant Subsidiary or
any group of Restricted Subsidiaries that, taken together, would constitute a
Significant Subsidiary, all outstanding exchange notes will become due and
payable without further action or notice. Holders of the exchange notes may not
enforce the indenture or the exchange notes except as provided in the indenture.
Subject to certain limitations, holders of a majority in aggregate principal
amount of the then outstanding exchange notes may direct the Trustee in its
exercise of any trust or power. The Trustee may withhold from holders of the
exchange notes notice of any continuing Default or Event of Default (except a
Default or Event of Default relating to the payment of principal or interest) if
it determines that withholding notice is in their interest.

     The holders of a majority in aggregate principal amount of the exchange
notes then outstanding by notice to the Trustee may on behalf of the holders of
all of the exchange notes waive any existing Default or Event of Default and its
consequences under the indenture except a continuing Default or Event of Default
in the payment of interest on, or the principal of, the exchange notes.

     The Company is required to deliver to the Trustee annually a statement
regarding compliance with the indenture, and the Company is required upon
becoming aware of any Default or Event of Default, to deliver to the Trustee a
statement specifying such Default or Event of Default.


NO PERSONAL LIABILITY OF DIRECTORS, OFFICERS, EMPLOYEES AND STOCKHOLDERS

     No director, officer, employee, incorporator or stockholder of the Company,
as such, shall have any liability for any obligations of the Company under the
exchange notes, the indenture or for any claim based on, in

                                       29


respect of, or by reason of, such obligations or their creation. Each holder of
exchange notes by accepting a note waives and releases all such liability. The
waiver and release are part of the consideration for issuance of the exchange
notes. Such waiver may not be effective to waive liabilities under the federal
securities laws and it is the view of the Commission that such a waiver is
against public policy.


LEGAL DEFEASANCE AND COVENANT DEFEASANCE

     The Company may, at its option and at any time, elect to have all of the
obligations of itself and the Subsidiary Guarantors discharged with respect to
the outstanding exchange notes ("Legal Defeasance") except for (i) the rights of
holders of outstanding exchange notes to receive payments in respect of the
principal of, premium, if any, and interest and Liquidated Damages on such
exchange notes when such payments are due from the trust referred to below, (ii)
the Company's obligations with respect to the exchange notes concerning issuing
temporary exchange notes, registration of exchange notes, mutilated, destroyed,
lost or stolen exchange notes and the maintenance of an office or agency for
payment and money for security payments held in trust, (iii) the rights, powers,
trusts, duties and immunities of the Trustee, and the Company's obligations in
connection therewith and (iv) the Legal Defeasance provisions of the indenture.
In addition, the Company may, at its option and at any time, elect to have the
obligations of the Company released with respect to certain covenants that are
described in the indenture ("Covenant Defeasance") and thereafter any omission
to comply with such obligations shall not constitute a Default or Event of
Default with respect to the exchange notes. In the event Covenant Defeasance
occurs, certain events (not including non-payment, bankruptcy, receivership,
rehabilitation and insolvency events) described under the caption "-- Events of
Default and Remedies" will no longer constitute an Event of Default with respect
to the exchange notes.

     In order to exercise either Legal Defeasance or Covenant Defeasance, (i)
the Company must irrevocably deposit with the Trustee, in trust, for the benefit
of the holders of the exchange notes, cash in U.S. dollars, non-callable
Government Securities, or a combination thereof, in such amounts as will be
sufficient, in the opinion of a nationally recognized firm of independent public
accountants, to pay the principal of, premium, if any, and interest and
Liquidated Damages on the outstanding exchange notes on the stated maturity or
on the applicable redemption date, as the case may be, and the Company must
specify whether the exchange notes are being defeased to maturity or to a
particular redemption date; (ii) in the case of Legal Defeasance, the Company
shall have delivered to the Trustee an opinion of counsel in the United States
reasonably acceptable to the Trustee confirming that (A) the Company has
received from, or there has been published by, the Internal Revenue Service a
ruling or (B) since the date of the indenture, there has been a change in the
applicable federal income tax law, in either case to the effect that, and based
thereon such opinion of counsel shall confirm that, the holders of the
outstanding exchange notes will not recognize income, gain or loss for federal
income tax purposes as a result of such Legal Defeasance and will be subject to
federal income tax on the same amounts, in the same manner and at the same times
as would have been the case if such Legal Defeasance had not occurred; (iii) in
the case of Covenant Defeasance, the Company shall have delivered to the Trustee
an opinion of counsel in the United States reasonably acceptable to the Trustee
confirming that the holders of the outstanding exchange notes will not recognize
income, gain or loss for federal income tax purposes as a result of such
Covenant Defeasance and will be subject to federal income tax on the same
amounts, in the same manner and at the same times as would have been the case if
such Covenant Defeasance had not occurred; (iv) no Default or Event of Default
shall have occurred and be continuing on the date of such deposit (other than a
Default or Event of Default resulting from the borrowing of funds to be applied
to such deposit) or insofar as Events of Default from bankruptcy or insolvency
events are concerned, at any time in the period ending on the 91st day after the
date of deposit; (v) such Legal Defeasance or Covenant Defeasance will not
result in a breach or violation of, or constitute a default under, any material
agreement or instrument (other than the indenture or the Series D Indenture) to
which the Company or any of its Subsidiaries is a party or by which the Company
or any of its Subsidiaries is bound; (vi) the Company must have delivered to the
Trustee an opinion of counsel to the effect that after the 91st day following
the deposit, the trust funds will not be subject to the effect of any applicable
bankruptcy, insolvency, reorganization or similar laws affecting creditors'
rights generally; (vii) the Company must deliver to the Trustee an Officers'
Certificate stating that the deposit was not made by the Company with the intent
of preferring the holders of exchange notes over the other creditors of the
Company with the intent of defeating, hindering, delaying or defrauding
creditors of the Company or others; and (viii) the Company must deliver to the
Trustee an Officers' Certificate and an opinion of counsel, which, taken
together, state that all conditions precedent provided for relating to the Legal
Defeasance or the Covenant Defeasance have been complied with.

                                       30







TRANSFER AND EXCHANGE

     A holder may transfer or exchange the exchange notes in accordance with the
indenture. The Registrar and the Trustee may require a holder, among other
things, to furnish appropriate endorsements and transfer documents and the
Company may require a holder to pay any taxes and fees required by law or
permitted by the indenture. The Company is not required to transfer or exchange
any exchange note selected for redemption. Also, the Company is not required to
transfer or exchange any exchange note for a period of 15 days before a
selection of exchange notes to be redeemed.

     The registered holder of a exchange note will be treated as the owner of it
for all purposes.


AMENDMENT, SUPPLEMENT AND WAIVER

     Except as provided in the next two succeeding paragraphs, the indenture or
the exchange notes may be amended or supplemented with the consent of the
holders of at least a majority in aggregate principal amount of the exchange
notes then outstanding (including, without limitation, consents obtained in
connection with a purchase of, or tender offer or exchange offer for, exchange
notes), and any existing default or compliance with any provision of the
indenture or the exchange notes may be waived with the consent of the holders of
a majority in aggregate principal amount of the then outstanding exchange notes
(including consents obtained in connection with a tender offer or exchange offer
for exchange notes).

     Without the consent of each holder affected, an amendment or waiver may not
(with respect to any exchange notes held by a non-consenting holder): (i) reduce
the principal amount of exchange notes whose holders must consent to an
amendment, supplement or waiver; (ii) reduce the principal of or change the
fixed maturity of any exchange note or alter the provisions with respect to the
redemption of the exchange notes (other than provisions relating to the
covenants described above under the caption "-- Repurchase at the Option of
Holders"); (iii) reduce the rate of or change the time for payment of interest
on any exchange note; (iv) waive a Default or Event of Default in the payment of
principal of or premium, if any, or interest on the exchange notes (except a
rescission of acceleration of the exchange notes by the holders of at least a
majority in aggregate principal amount of the exchange notes and a waiver of the
payment default that resulted from such acceleration); (v) make any exchange
note payable in money other than that stated in the exchange notes; (vi) make
any change in the provisions of the indenture relating to waivers of past
Defaults or the rights of holders of exchange notes to receive payments of
principal of or premium, if any, or interest on the exchange notes; (vii) waive
a redemption payment with respect to any exchange note (other than a payment
required by one of the covenants described above under the caption "--
Repurchase at the Option of Holders"); (viii) alter the ranking of the exchange
notes relative to other Indebtedness of the Company; or (ix) make any change in
the foregoing amendment and waiver provisions. In addition, without the consent
of holders of not less than 66 2/3% in aggregate principal amount of the
exchange notes then outstanding, no such amendment, supplement or waiver may
amend, change or modify the obligation of the Company to make and consummate a
Change of Control Offer in the event of a Change of Control or make and
consummate an Asset Sale Offer with respect to any Asset Sale or modify any of
the provisions or definitions with respect thereto.

     Notwithstanding the foregoing, without the consent of any holder of
exchange notes, the Company and the Trustee may amend or supplement the
indenture or the exchange notes to cure any ambiguity, defect or inconsistency,
to provide for uncertificated exchange notes in addition to or in place of
certificated exchange notes, to provide for the assumption of the Company's
obligations to holders of exchange notes in the case of a merger or
consolidation, to make any change that would provide any additional rights or
benefits to the holders of exchange notes or that does not adversely affect the
legal rights under the indenture of any such holder, to secure the exchange
notes pursuant to the requirements of the "Liens" covenant or otherwise or to
comply with requirements of the Commission in order to effect or maintain the
qualification of the indenture under the Trust Indenture Act.


CONCERNING THE TRUSTEE

     The indenture contains certain limitations on the rights of the Trustee,
should it become a creditor of the Company, to obtain payment of claims in
certain cases, or to realize on certain property received in respect of any such
claim as security or otherwise. The Trustee will be permitted to engage in other
transactions; however, if it

                                       31


acquires any conflicting interest it must eliminate such conflict within 90
days, apply to the Commission for permission to continue or resign.

     The holders of a majority in aggregate principal amount of the then
outstanding exchange notes will have the right to direct the time, method and
place of conducting any proceeding for exercising any remedy available to the
Trustee, subject to certain exceptions. The indenture provides that in case an
Event of Default shall occur (which shall not be cured), the Trustee will be
required, in the exercise of its power, to use the degree of care of a prudent
man in the conduct of his own affairs. Subject to such provisions, the Trustee
will be under no obligation to exercise any of its rights or powers under the
indenture at the request of any holder of exchange notes, unless such holder
shall have offered to the Trustee security and indemnity satisfactory to it
against any loss, liability or expense.

     JPMorgan Chase Bank acts as trustee under the indentures pursuant to which
the Series A/B Notes and the Series D Notes were issued.  The occurrence of a
default with respect to any of the exchange notes, the Series A/B Notes or the
Series D Notes could create a conflicting interest for JPMorgan Chase Bank under
the Trust Indenture Act.  If the default is not cured or waived after JPMorgan
Chase Bank acquires a conflicting interest, it generally would be required by
the Trust Indenture Act to eliminate the conflicting interest or resign as
trustee under the indenture for the notes or the indentures for the Series A/B
Notes and Series D Notes.
GOVERNING LAW

     The indenture, the exchange notes and the Subsidiary Guarantees will
provide that they will be governed by the laws of the State of New York.


BOOK-ENTRY, DELIVERY AND FORM

     Except as set forth below, the exchange notes will initially be issued in
the form of one or more fully registered global exchange notes (collectively,
the "Global Note"). The Global Note will be deposited on the Issue Date with, or
on behalf of, The Depository Trust Company (the "Depository") and registered in
the name of Cede & Co., as nominee of the Depository (such nominee being
referred to herein as the "Global Note holder").

     The Depository is a limited-purpose trust company that was created to hold
securities for its participating organizations (collectively, the "Participants"
or the "Depository's Participants") and to facilitate the clearance and
settlement of transactions in such securities between Participants through
electronic book-entry changes in accounts of its Participants. The Depository's
Participants include securities brokers and dealers (including the dealer
manager), banks and trust companies, clearing corporations and certain other
organizations. Access to the Depository's system is also available to other
entities such as banks, brokers, dealers and trust companies (collectively, the
"Indirect Participants" or the "Depository's Indirect Participants") that clear
through or maintain a custodial relationship with a Participant, either directly
or indirectly. Persons who are not Participants may beneficially own securities
held by or on behalf of the Depository only thorough the Depository's
Participants or the Depository's Indirect Participants.

     The Company expects that pursuant to procedures established by the
Depository (i) upon deposit of the Global Note, the Depository will credit the
accounts of Participants designated by the dealer manager with portions of the
principal amount of the Global Note and (ii) ownership of the exchange notes
evidenced by the Global Note will be shown on, and the transfer of ownership
thereof will be effected only through, records maintained by the Depository
(with respect to the interests of the Depository's Participants), the
Depository's Participants and the Depository's Indirect Participants.
Prospective purchasers are advised that the laws of some states require that

                                       32





certain persons take physical delivery in definitive form of securities that
they own ("Certificated Securities"). Consequently, the ability to transfer
exchange notes evidenced by the Global Note will be limited to such extent.

     So long as the Global Note holder is the registered owner of all exchange
notes, the Global Note holder will be considered the sole holder under the
indenture of all exchange notes evidenced by the Global Note. Beneficial owners
of exchange notes evidenced by the Global Note will not be considered the owners
or holders thereof under the indenture for any purpose, including with respect
to the giving of any directions, instructions or approvals to the Trustee
thereunder. Neither the Company nor the Trustee will have any responsibility or
liability for any aspect of the records of the Depository or for maintaining,
supervising or reviewing any records of the Depository relating to the exchange
notes.

     Payments in respect of the principal of, premium, if any, interest, if any,
on any exchange notes registered in the name of the Global Note holder on the
applicable record date will be made by the Company through the paying agent to
or at the direction of the Global Note holder in its capacity as the registered
holder under the indenture. Under the terms of the indenture, the Company and
the Trustee may treat the persons in whose names exchange notes, including the
Global Note, are registered as the owners thereof for the purpose of receiving
such payments. Consequently, neither the Company nor the Trustee has or will
have any responsibility or liability for the payment of such amounts to
beneficial owners of exchange notes. The Company believes, however, that it is
currently the policy of the Depository to immediately credit the accounts of the
relevant Participants with such payments, in amounts proportionate to their
respective holdings of beneficial interests in the relevant security as shown on
the records of the Depository. Payments by the Depository's Participants and the
Depository's Indirect Participants to the beneficial owners of exchange notes
will be governed by standing instructions and customary practice and will be the
responsibility of the Depository's Participants or the Depository's Indirect
Participants.

     As long as the exchange notes are represented by a Global Note, the
Depository's nominee will be the holder of the exchange notes and therefore will
be the only entity that can exercise a right to require repurchase of the
exchange notes. See "-- Certain Covenants" and "-- Repurchase at the Option of
Holders." Notice by Participants or Indirect Participants or by owners of
beneficial interests in a Global Note held through such Participants or Indirect
Participants of the exercise of the option to elect repurchase of beneficial
interests in exchange notes represented by Global Note must be transmitted to
the Depository in accordance with its procedures on a form required by the
Depository and provided to Participants. In order to ensure that the
Depository's nominee will timely exercise a right to require repurchase with
respect to a particular exchange note, the beneficial owner of such exchange
note must instruct the broker or other Participant or Indirect Participant
through which it holds an interest in such exchange note to notify the
Depository of its desire to exercise a right to require repurchase. Different
firms have different cut-off times for accepting instructions from their
customers and, accordingly, each beneficial owner should consult the broker or
other Participant or Indirect Participant through which it holds an interest in
a exchange note in order to ascertain the cut-off time by which such an
instruction must be given in order for timely notice to be delivered to the
Depository. The Company will not be liable for any delay in delivery to the
paying agent of notices of the exercise of any option to elect repurchase.

     If (i) the Company notifies the Trustee in writing that the Depository is
no longer willing or able to act as a depository and the Company is unable to
locate a qualified successor within 90 days or (ii) the Company, at its option,
notifies the Trustee in writing that it elects to cause the issuance of exchange
notes in the form of Certificated Securities under the indenture, then, upon
surrender by the Global Note holder of its Global Note, exchange notes in such
form will be issued to each person that the Global Note holder and the
Depository identify as being the beneficial owner of the related exchange notes.

     Neither the Company nor the Trustee will be liable for any delay by the
Global Note holder or the Depository in identifying the beneficial owners of
exchange notes and the Company and the Trustee may conclusively rely on, and
will be protected in relying on, instructions from the Global Note holder or the
Depository for all purposes.


Same-Day Settlement and Payment

     The indenture requires that payments in respect of the exchange notes
represented by the Global Note (including principal, premium, if any, interest
and Liquidated Damages, if any) be made by wire transfer of

                                       33


immediately available funds to the accounts specified by the Global Note holder.
With respect to Certificated Securities, the Company will make all payments of
principal, premium, if any, interest and Liquidated Damages, if any, by wire
transfer of immediately available funds to the accounts specified by the holders
thereof or, if no such account is specified, by mailing a check to each such
holder's registered address. The exchange notes represented by the Global Note
are expected to be eligible to trade in the PORTAL Market and to trade in the
Depository's Same-Day Funds Settlement System, and any permitted secondary
market trading activity in such exchange notes will, therefore, be required by
the Depository to be settled in immediately available funds. The Company expects
that secondary trading in the Certificated Securities will also be settled in
immediately available funds.


REGISTRATION RIGHTS; LIQUIDATED DAMAGES

     The Company, the Subsidiary Guarantors and the dealer manager entered into
the Registration Rights Agreement on May 2, 2002. Pursuant to the Registration
Rights Agreement, the Company agreed to make this registered exchange offer.
Under existing SEC interpretations, the exchange notes will, in general, be
freely transferable without further registration under the Securities Act;
provided, however, that in the case of broker-dealers participating in the
Registered Exchange Offer, a prospectus meeting the requirements of the
Securities Act will be delivered upon resale by such broker-dealers in
connection with resales of the exchange notes. If (i) the Company is not
permitted to consummate this exchange offer because this exchange offer is not
permitted by applicable law or Commission policy or (ii) any holder of Transfer
Restricted Securities notifies the Company within the specified time period that
(A) it is prohibited by law or Commission policy from participating in this
Exchange Offer or (B) that it may not resell the exchange notes acquired by it
in this exchange offer to the public without delivering a prospectus and this
prospectus is not appropriate or available for such resales or (C) that it is a
broker-dealer and owns new notes acquired directly from the Company or an
affiliate of the Company, the Company will file with the Commission a shelf
registration statement to cover resales of the affected notes by the holders
thereof who satisfy certain conditions relating to the provision of information
in connection with the shelf registration statement. The Company will use its
reasonable best efforts to cause the applicable registration statement to be
declared effective as promptly as possible by the Commission. For purposes of
the foregoing, "Transfer Restricted Securities" means each exchange note until
(i) the date on which such exchange note has been exchanged by a person other
than a broker-dealer for an outstanding note in the Registered Exchange Offer,
(ii) following the exchange by a broker-dealer in the Registered Exchange Offer
of an exchange note for an outstanding note, the date on which such exchange
note is sold to a purchaser who receives from such broker-dealer on or prior to
the date of such sale a copy of the prospectus contained in the Exchange Offer
Registration Statement, (iii) the date on which such exchange note has been
effectively registered under the Securities Act of 1933 and disposed of in
accordance with the shelf registration statement or (iv) the date on which such
exchange note is distributed to the public pursuant to Rule 144 under the
Securities Act of 1933.

     If we become obligated to file it, we will use our reasonable best efforts
to file it with the Commission on or prior to 30 days after such filing
obligation arises (and in any event within 90 days after May 2, 2002) and to
cause the Shelf Registration to be declared effective by the Commission on or
prior to 90 days after such obligation arises. If (a) we fail to file any of the
Registration Statements required by the Registration Rights Agreement on or
before the date specified for such filing, (b) any of the Registration
Statements is not declared effective by the Commission on or prior to the date
specified for such effectiveness (the "Effectiveness Target Date"), (c) the
Company fails to consummate the Registered Exchange Offer within 45 business
days of the Effectiveness Target Date with respect to the Exchange Offer
Registration Statement, or (d) the shelf registration statement or the
Registration Statement of which this Prospectus is a part is declared effective
but thereafter ceases to be effective or usable in connection with this Exchange
Offer or resales of Transfer Restricted Securities, as the case may be, during
the periods specified in the Registration Rights Agreement (each such event
referred to in clauses (a) through (d) above a "Registration Default"), then the
interest rate on the Transfer Restricted Securities, with respect to the first
90-day period immediately following the occurrence of such Registration Default
will increase ("Liquidated Damages") by 0.50% per annum and will increase by an
additional 0.50% per annum with respect to each subsequent 90-day period until
all Registration Defaults have been cured, up to a maximum amount of Liquidated
Damages of 2% per annum with respect to all Registration Defaults. All accrued
Liquidated Damages will be paid by the Company on each interest payment date to
the Global Note holder by wire transfer of immediately available funds and to
holders of Certificated Securities by wire transfer to the accounts specified by
them or by mailing checks to their registered addresses if no such accounts have
been specified. Following the cure of all Registration Defaults, the accrual of
Liquidated Damages will cease.

                                       34


     Each holder of the new notes who wishes to exchange such new notes for
exchange notes in this Exchange Offer will be required to make certain
representations, including representations that (i) any exchange notes to be
received by it will be acquired in the ordinary course of business, (ii) it is
not participating in, and it has no arrangement with any person to participate
in the distribution (within the meaning of the Securities Act) of the new notes
and (iii) it is neither an affiliate of the Company, as defined in Rule 405 of
the Securities Act, nor a broker-dealer tendering notes acquired directly from
the Company for its own account. If the holder is a broker-dealer that will
receive exchange notes for its own account in exchange for new notes that were
acquired as a result of market-making activities or other trading activities, it
will be required to acknowledge that it will deliver a prospectus in connection
with any resale of such exchange notes. The Company agreed, for a period of 180
days after consummation of this Exchange Offer, to make available a prospectus
meeting the requirements of the Securities Act to any such broker-dealer for use
in connection with any resale of any exchange notes acquired in the Registered
Exchange Offer. Holders of new notes will also be required to deliver
information to be used in connection with the shelf registration statement and
to provide comments on the shelf registration statement within the time periods
set forth in this Registration Rights Agreement in order to have their new notes
included in the shelf registration statement and benefit from the provisions
regarding Liquidated Damages set forth above.


CERTAIN DEFINITIONS

     Set forth below are certain defined terms used in the indenture. Reference
is made to the indenture for a full disclosure of all such terms, as well as any
other capitalized terms used herein for which no definition is provided.

     "Acquired Indebtedness" means, with respect to any specified Person, (i)
Indebtedness of any other Person existing at the time such other Person is
merged with or into or became a Subsidiary of such specified Person, including,
without limitation, Indebtedness incurred in connection with, or in
contemplation of, such other Person merging with or into or becoming a
Subsidiary of such specified Person, and (ii) Indebtedness secured by a Lien
encumbering any asset acquired by such specified Person.

     The term "additional new notes" means any new notes originally issued after
the Issue Date.

     "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For purposes of this definition, "control"
(including, with correlative meanings, the terms "controlling," "controlled by"
and "under common control with"), as used with respect to any Person, shall mean
the possession, directly or indirectly, of the power to direct or cause the
direction of the management or policies of such Person, whether through the
ownership of voting securities, by agreement or otherwise; provided that
beneficial ownership of 10% or more of the voting securities of a Person shall
be deemed to be control.

     "Asset Sale" means any sale, issuance, conveyance, transfer, lease or other
disposition to any Person other than the Company or any of its Restricted
Subsidiaries (including, without limitation, by means of a sale-and- leaseback
transaction or a merger or consolidation) (collectively, for purposes of this
definition, a "transfer"), directly or indirectly, in one or a series of related
transactions, of (a) any Capital Stock of any Restricted Subsidiary held by the
Company or any other Restricted Subsidiary, (b) all or substantially all of the
properties and assets of any division or line of business of the Company or any
of its Restricted Subsidiaries, (c) any Event of Loss or (d) any other
properties or assets of the Company or any of its Restricted Subsidiaries other
than transfers of cash, Cash Equivalents, accounts receivable, or properties or
assets in the ordinary course of business; provided that the sale, lease,
conveyance or other disposition of all or substantially all of the properties or
assets of the Company and its Restricted Subsidiaries, taken as a whole, will be
governed by the provisions of the indenture described above under the caption
"-- Repurchase at the Option of Holders -- Change of Control" and/or the
provisions described above under the caption "-- Certain Covenants -- Merger,
Consolidation or Sale of Assets" and not by the provisions of the "Asset Sales"
covenant. For the purposes of this definition, the term "Asset Sale" also shall
not include any of the following: (i) any transfer of properties or assets to an
Unrestricted Subsidiary, if such transfer is permitted under the "Restricted
Payments" covenant described above; (ii) sales of damaged, worn-out or obsolete
equipment or assets that, in the Company's reasonable judgment, are either (A)
no longer used or (B) no longer useful in the business of the Company or its
Restricted Subsidiaries; (iii) any lease of any property entered into in the
ordinary course of business and with respect to which the Company or any
Restricted Subsidiary is the lessor,

                                       35


except any such lease that provides for the acquisition of such property by the
lessee during or at the end of the term thereof for an amount that is less than
the fair market value thereof at the time the right to acquire such property is
granted; (iv) any trade or exchange by the Company or any Restricted Subsidiary
of one or more drilling rigs for one or more other drilling rigs owned or held
by another Person, provided that (A) the Fair Market Value of the drilling rig
or rigs traded or exchanged by the Company or such Restricted Subsidiary
(including any cash or Cash Equivalents to be delivered by the Company or such
Restricted Subsidiary) is reasonably equivalent to the Fair Market Value of the
drilling rig or rigs (together with any cash or Cash Equivalents) to be received
by the Company or such Restricted Subsidiary and (B) such exchange is approved
by a majority of the Disinterested Directors of the Company; (v) any transfer by
the Company or any Restricted Subsidiary to its customers of drill pipe, tools
and associated drilling equipment utilized in connection with a drilling
contract for the employment of a drilling rig in the ordinary course of business
and consistent with past practice; and (vi) any transfers that, but for this
clause (vi), would be Asset Sales, if (A) the Company elects to designate such
transfers as not constituting Asset Sales and (B) after giving effect to such
transfers, the aggregate Fair Market Value of the properties or assets
transferred in such transaction or any such series of related transactions so
designated by the Company does not exceed $500,000.

     "Attributable Indebtedness" in respect of a sale-and-leaseback transaction
means, at the time of determination, the present value (discounted at the rate
of interest implicit in such transaction, determined in accordance with GAAP) of
the obligation of the lessee for net rental payments during the remaining term
of the lease included in such sale-and-leaseback transaction (including any
period for which such lease has been extended or may, at the option of the
lessor, be extended). As used in the preceding sentence, the "net rental
payments" under any lease for any such period shall mean the sum of rental and
other payments required to be paid with respect to such period by the lessee
thereunder, excluding any amounts required to be paid by such lessee on account
of maintenance and repairs, insurance, taxes, assessments, water rates or
similar charges. In the case of any lease that is terminable by the lessee upon
payment of penalty, such net rental payment shall also include the amount of
such penalty, but no rent shall be considered as required to be paid under such
lease subsequent to the first date upon which it may be so terminated.

     "Capital Lease Obligation" means, at the time any determination thereof is
to be made, the amount of the liability in respect of a capital lease that would
at such time be required to be capitalized on a balance sheet in accordance with
GAAP.

     "Capital Stock" means (i) in the case of a corporation, corporate stock,
(ii) in the case of an association or business entity, any and all shares,
interests, participations, rights or other equivalents (however designated) of
corporate stock, (iii) in the case of a partnership, partnership interests
(whether general or limited), (iv) in the case of a limited liability
corporation or similar entity, any membership or other similar interests
therein; and (v) any other interest or participation that confers on a Person
the right to receive a share of the profits and losses of, or distributions of
assets of, the issuing Person.

     "Cash Equivalents" means (i) any evidence of Indebtedness with a maturity
of 365 days or less issued or directly and fully guaranteed or insured by the
United States of America or any agency or instrumentality thereof (provided that
the full faith and credit of the United States of America is pledged in support
thereof); (ii) demand and time deposits and certificates of deposit or
acceptances with a maturity of 365 days or less of any financial institution
that is a member of the Federal Reserve System having combined capital and
surplus and undivided profits of not less than $500 million; (iii) commercial
paper with a maturity of 270 days or less issued by a corporation that is not an
Affiliate of the Company and is organized under the laws of any state of the
United States or the District of Columbia and rated at least A-2 by Standard and
Poor's Ratings Group (or its successors) or at least P-2 by Moody's Investors
Service, Inc. (or its successors); (iv) repurchase obligations with a term of
not more than seven days for underlying securities of the types described in
clause (i) above entered into with any commercial bank meeting the
specifications of clause (ii) above; (v) overnight bank deposits and bankers'
acceptances at any commercial bank meeting the qualifications specified in
clause (ii) above; (vi) deposits available for withdrawal on demand with any
commercial bank not meeting the qualifications specified in clause (ii) above,
provided all such deposits do not exceed $5 million in the aggregate at any one
time; (vii) demand and time deposits and certificates of deposit with any
commercial bank organized in the United States not meeting the qualifications
specified in clause (ii) above, provided that such deposits and certificates
support bond, letter of credit and other similar types of obligations incurred
in the ordinary course of business; and (viii) investments in money market or
other mutual funds substantially all of whose assets comprise securities of the
types described in clauses (i) through (v) above.

                                       36


     "Consolidated Cash Flow" means, with respect to any Person for any period,
the Consolidated Net Income of such Person for such period plus (i) an amount
equal to any extraordinary loss plus any net loss realized in connection with an
Asset Sale (to the extent such losses were deducted in computing such
Consolidated Net Income), plus (ii) provision for taxes based on income or
profits of such Person and its Restricted Subsidiaries for such period, to the
extent that such provision for taxes was included in computing such Consolidated
Net Income, plus (iii) consolidated net interest expense of such Person and its
Restricted Subsidiaries for such period, whether paid or accrued and whether or
not capitalized (including, without limitation, amortization of original issue
discount, non-cash interest payments, the interest component of any deferred
payment obligations, the interest component of all payments associated with
Capital Lease Obligations, imputed interest with respect to Attributable
Indebtedness, commissions, discounts and other fees and charges incurred in
respect of letter of credit or bankers' acceptance financings, and net payments
(if any) pursuant to Interest Rate Protection Obligations), to the extent that
any such expense was deducted in computing such Consolidated Net Income, plus
(iv) depreciation, amortization (including amortization of goodwill, debt
issuance costs and other intangibles but excluding amortization of prepaid cash
expenses that were paid in a prior period) and other non-cash charges (including
any provision for the reduction in the carrying value of assets recorded in
accordance with GAAP but excluding any such non-cash charge to the extent that
it represents an accrual of or reserve for cash charges in any future period or
amortization of a prepaid cash expense that was paid in a prior period) of such
Person and its Restricted Subsidiaries for such period to the extent that such
depreciation, amortization and other non-cash charges were deducted in computing
such Consolidated Net Income, minus (v) any non-cash items increasing the
Consolidated Net Income of such Person and its Restricted Subsidiaries during
such period (excluding any such items that represent the reversal of any accrual
of, or cash reserve for, anticipated cash charges in any prior period commencing
subsequent to the Series A/B Issue Date), in each case, on a consolidated basis
and determined in accordance with GAAP. Notwithstanding the foregoing, the
provision for taxes on the income or profits of, and the depreciation and
amortization and other non-cash charges of, a Restricted Subsidiary of the
referent Person shall be added to Consolidated Net Income to compute
Consolidated Cash Flow only to the extent (and in same proportion) that the Net
Income of such Restricted Subsidiary was included in calculating the
Consolidated Net Income of such Person and only if a corresponding amount would
be permitted at the date of determination to be dividended to the Company by
such Restricted Subsidiary without prior governmental approval (that has not
been obtained), and without direct or indirect restriction pursuant to the terms
of its charter and all agreements, instruments, judgments, decrees, orders,
statutes, rules and governmental regulations applicable to that Restricted
Subsidiary or its stockholders.

     "Consolidated Net Income" means, with respect to any Person for any period,
the aggregate of the Net Income of such Person and its Restricted Subsidiaries
for such period, on a consolidated basis, determined in accordance with GAAP;
provided that (i) the Net Income (but not loss) of any Person that is not a
Restricted Subsidiary or that is accounted for by the equity method of
accounting shall be included only to the extent of the amount of dividends or
distributions paid in cash to the referent Person or a Restricted Subsidiary
thereof that is a Subsidiary Guarantor; (ii) the Net Income of any Restricted
Subsidiary shall be excluded to the extent that the declaration or payment of
dividends or similar distributions by that Restricted Subsidiary of that Net
Income is not at the date of determination permitted without any prior
governmental approval (that has not been obtained) or, directly or indirectly,
by operation of the terms of its charter or any agreement, instrument, judgment,
decree, order, statute, rule or governmental regulation applicable to that
Restricted Subsidiary or its stockholders; (iii) the Net Income of any Person
acquired in a pooling of interests transaction for any period prior to the date
of such acquisition shall be excluded; and (iv) the cumulative effect of a
change in accounting principles shall be excluded.

     "Consolidated Net Worth" means, with respect to any Person as of any date,
the sum of (i) the consolidated equity of the common stockholders of such Person
and its consolidated Restricted Subsidiaries as of such date plus (ii) the
respective amounts reported on such Person's balance sheet as of such date with
respect to any series of preferred stock (other than Disqualified Stock) that by
its terms is not entitled to the payment of dividends unless such dividends may
be declared and paid only out of net earnings in respect of the year of such
declaration and payment, but only to the extent of any cash received by such
Person upon issuance of such preferred stock, less (x) all write-ups (other than
write-ups resulting from foreign currency translations and write-ups of tangible
assets of a going concern business made within 12 months after the acquisition
of such business) subsequent to the Series A/B Issue Date in the book value of
any asset owned by such Person or a consolidated Restricted Subsidiary of such
Person, (y) all investments as of such date in unconsolidated Subsidiaries and
in Persons that are not

                                       37


Subsidiaries (except, in each case, Permitted Investments), and (z) all
unamortized debt discount and expense and unamortized deferred charges as of
such date, all of the foregoing determined in accordance with GAAP.

     "Currency Hedge Obligations" means, at any time as to any Person, the
obligations of such Person at such time that were incurred in the ordinary
course of business pursuant to any foreign currency exchange agreement, option
or futures contract or other similar agreement or arrangement designed to
protect against or manage such Person's or any of its Subsidiaries exposure to
fluctuations in foreign currency exchange rates.

     "Default" means any event that is or with the passage of time or the giving
of notice or both would be an Event of Default.

     "Disinterested Director" means, with respect to any transaction or series
of transactions in respect of which the Board of Directors of the Company is
required to deliver a resolution of the Board of Directors under the indenture,
a member of the Board of Directors of the Company who does not have any material
direct or indirect financial interest (other than an interest arising solely
from the beneficial ownership of Capital Stock of the Company) in or with
respect to such transaction or series of transactions.

     "Disqualified Stock" means any Capital Stock that, by its terms (or by the
terms of any security into which it is convertible or for which it is
exchangeable), or upon the happening of any event, matures or is mandatorily
redeemable, pursuant to a sinking fund obligation or otherwise, or redeemable at
the option of the holder thereof, in whole or in part, on or prior to the date
on which the new notes mature.

     "Drilling Business" means (i) the drilling for oil, gas or other
hydrocarbons, whether offshore or onshore, and whether as an agent or principal,
and (ii) any business relating to or arising from drilling for oil, gas or other
hydrocarbons, including, without limitation, the rental of drill pipe, tools or
other equipment.

     "Employee Stock Repurchases" means purchases by the Company of any of its
Capital Stock from employees for the purpose of permitting such employees to pay
personal income tax obligations with the proceeds, provided that the aggregate
amount of all such purchases shall not exceed $500,000 during any fiscal year of
the Company.

     "Equity Interests" means Capital Stock and all warrants, options or other
rights to acquire Capital Stock (but excluding any debt security that is
convertible into, or exchangeable for, Capital Stock).

     "Event of Loss" means, with respect to any drilling rig or similar or
related property or asset of the Company or any Restricted Subsidiary, (i) any
damage to such drilling rig or similar or related property or asset that results
in an insurance settlement with respect thereto on the basis of a total loss or
a constructive or compromised total loss or (ii) the confiscation, condemnation
or requisition of title to such drilling rig or similar or related property or
asset by any government or instrumentality or agency thereof. An Event of Loss
shall be deemed to occur as of the date of the insurance settlement,
confiscation, condemnation or requisition of title, as applicable.

     The term "exchange notes" means the Company's 10 1/8% Senior Notes due 2009
issued in exchange for the new notes and any additional new notes.

     "Exempt Foreign Subsidiary" means (i) any Restricted Subsidiary engaged in
the Drilling Business exclusively outside the United States of America,
irrespective of its jurisdiction of incorporation and (ii) any other Restricted
Subsidiary whose assets (excluding any cash and Cash Equivalents) consist
exclusively of Capital Stock or Indebtedness of one or more Restricted
Subsidiaries described in clause (i) of this definition, that, in any case, is
so designated by the Company in an Officers' Certificate delivered to the
Trustee and (a) is not a guarantor of, and has not granted any Lien to secure,
the senior credit facility or any other Indebtedness of the Company or any
Restricted Subsidiary other than another Exempt Foreign Subsidiary and (b) does
not have total assets that, when aggregated with the total assets of any other
Exempt Foreign Subsidiary, exceed 10% of the Company's consolidated total
assets, as determined in accordance with GAAP, as reflected on the Company's
most recent quarterly or annual balance sheet. The Company may revoke the
designation of any Exempt Foreign Subsidiary by notice to the Trustee.

                                       38


     "Existing Indebtedness" means up to $8 million in aggregate principal
amount of Indebtedness of the Company and its Subsidiaries (other than
Indebtedness under the senior credit facility) in existence on the Series A/B
Issue Date, until such amounts are repaid.

     "Fair Market Value" means, with respect to any asset or Investment, the
fair market value of such asset or Investment at the time of the event requiring
such determination, and, with respect to any assets or Investment in excess of
$5 million (other than cash or Cash Equivalents) as determined by a reputable
appraisal firm that is, in the reasonable judgment of the Board of Directors of
the Company, qualified to perform the task for which such firm has been engaged
and independent with respect to the Company.

     "Fixed Charges" means, with respect to any Person for any period, the sum
of (i) the consolidated interest expense (net of any interest income) of such
Person and its Restricted Subsidiaries for such period, whether paid or accrued
(excluding amortization of debt issuance costs and including, without
limitation, the interest component of any deferred payment obligations, the
interest component of all payments associated with Capital Lease Obligations,
imputed interest with respect to Attributable Indebtedness, commissions,
discounts and other fees and charges incurred in respect of letter of credit or
bankers' acceptance financings, and net payments (if any) pursuant to Interest
Rate Protection Obligations); (ii) the consolidated interest expense of such
Person and its Restricted Subsidiaries that was capitalized during such period;
(iii) any interest expense on Indebtedness of another Person that is guaranteed
by such Person or one of its Restricted Subsidiaries or secured by a Lien on
assets of such Person or one of its Restricted Subsidiaries (whether or not such
guarantee or Lien is called upon); and (iv) the product of (A) all cash dividend
payments (and non-cash dividend payments in the case of a Person that is a
Restricted Subsidiary) on any series of preferred stock of such Person, to the
extent such preferred stock is owned by Persons other than such Person or its
Restricted Subsidiaries, times (B) a fraction, the numerator of which is one and
the denominator of which is one minus the then current combined federal, state
and local statutory tax rate of such Person, expressed as a decimal, in each
case, on a consolidated basis and in accordance with GAAP.

     "Fixed Charge Coverage Ratio" means with respect to any Person for any
period, the ratio of the Consolidated Cash Flow of such Person and its
Restricted Subsidiaries for such period to the Fixed Charges of such Person for
such period. In the event that the Company or any of its Restricted Subsidiaries
incurs, assumes, guarantees or redeems any Indebtedness (other than revolving
credit borrowings) or issues preferred stock subsequent to the commencement of
the period for which the Fixed Charge Coverage Ratio is being calculated but
prior to the date on which the event for which the calculation of the Fixed
Charge Coverage Ratio is made (the "Calculation Date"), then the Fixed Charge
Coverage Ratio shall be calculated giving pro forma effect to such incurrence,
assumption, guarantee or redemption of Indebtedness, or such issuance or
redemption of preferred stock, as if the same had occurred at the beginning of
the applicable four-quarter reference period. In addition, for purposes of
making the computation referred to above, (i) acquisitions of businesses that
have been made by the referent Person or any of its Restricted Subsidiaries,
including through mergers or consolidations and including any related financing
transactions, during the four-quarter reference period or subsequent to such
reference period and on or prior to the Calculation Date shall be deemed to have
occurred on the first day of the four-quarter reference period; (ii) the
Consolidated Cash Flow attributable to discontinued operations, as determined in
accordance with GAAP, and operations or businesses disposed of prior to the
Calculation Date, shall be excluded; and (iii) the Fixed Charges attributable to
discontinued operations, as determined in accordance with GAAP, and operations
or businesses disposed of prior to the Calculation Date, shall be excluded, but
only to the extent that the obligations giving rise to such Fixed Charges will
not be obligations of the referent Person or any of its Restricted Subsidiaries
following the Calculation Date.

     "GAAP" means generally accepted accounting principles set forth in the
opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of
the Financial Accounting Standards Board or in such other statements by such
other entity as have been approved by a significant segment of the accounting
profession, which are in effect from time to time.

     The term "guarantee" means, as applied to any obligation, (i) a guarantee
(other than by endorsement of negotiable instruments for collection in the
ordinary course of business), direct or indirect, in any manner, of any part or
all of such obligation and (ii) an agreement, direct or indirect, contingent or
otherwise, the practical effect of which is to assure in any way the payment or
performance (or payment of damages in the event of nonperformance)

                                       39


of all or any part of such obligation, including, without limiting the
foregoing, the payment of amounts drawn down under letters of credit. When used
as a verb, "guarantee" has a corresponding meaning.

     "Indebtedness" means, with respect to any Person, any indebtedness of such
Person, whether or not contingent, in respect of borrowed money or evidenced by
bonds, notes, debentures or similar instruments or letters of credit (or
reimbursement agreements in respect thereof) or banker's acceptances or
representing Capital Lease Obligations or the balance deferred and unpaid of the
purchase price of any property or representing any obligations in respect of
Currency Hedge Obligations or Interest Rate Protection Obligations, except any
such balance that constitutes an accrued expense or trade payable, if and to the
extent any of the foregoing indebtedness (other than letters of credit, Currency
Hedge Obligations and Interest Rate Protection Obligations) would appear as a
liability upon a balance sheet of such Person prepared in accordance with GAAP,
as well as all indebtedness of others secured by a Lien on any asset of such
Person (whether or not such indebtedness is assumed by such Person) and, to the
extent not otherwise included, the guarantee by such Person of any Indebtedness
of any other Person.

     "Interest Rate Protection Obligations" means the obligations of any Person
pursuant to any arrangement with any other Person whereby, directly or
indirectly, such Person is entitled to receive from time to time periodic
payments calculated by applying either a floating or a fixed rate of interest on
a stated notional amount in exchange for periodic payments made by such Person
calculated by applying a fixed or a floating rate of interest on the same
notional amount and shall include, without limitation, interest rate swaps,
caps, floors, collars and similar agreements or arrangements designed to protect
against or manage such Person's or any of its Subsidiaries' exposure to
fluctuations in interest rates.

     "Investments" means, with respect to any Person, all investments by such
Person in other Persons (including Affiliates) in the forms of direct or
indirect loans (including guarantees of Indebtedness or other obligations),
advances or capital contributions (excluding commission, travel and similar
advances to officers and employees made in the ordinary course of business),
purchases or other acquisitions for consideration of Indebtedness, Equity
Interests or other securities, together with all items that are or would be
classified as investments on a balance sheet prepared in accordance with GAAP;
provided that the following shall not constitute Investments: (i) an acquisition
of assets, Equity Interests or other securities by the Company for consideration
consisting of common equity securities of the Company, (ii) extensions of trade
credit or other advances to customers on commercially reasonable terms in
accordance with normal trade practices or otherwise in the ordinary course of
business, (iii) Interest Rate Protection Obligations and Currency Hedge
Obligations, but only to the extent that the same constitute Permitted
Indebtedness, and (iv) endorsements of negotiable instruments and documents in
the ordinary course of business. If the Company or any Subsidiary of the Company
sells or otherwise disposes of any Equity Interests of any direct or indirect
Subsidiary of the Company such that, after giving effect to any such sale or
disposition, such Person is no longer a Subsidiary of the Company, the Company
shall be deemed to have made an Investment on the date of any such sale or
disposition equal to the fair market value of the Equity Interests of such
Subsidiary not sold or disposed of.

     "Issue Date" means the date on which the new notes were first issued under
the indenture.

     "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset,
whether or not filed, recorded or otherwise perfected under applicable law
(including any conditional sale or other title retention agreement, any lease in
the nature thereof, any option or other agreement to sell or give a security
interest in and any filing of or agreement to give any financing statement under
the Uniform Commercial Code (or equivalent statutes) of any jurisdiction other
than a precautionary financing statement respecting a lease not intended as a
security agreement).

     "Net Equity Proceeds" means (i) in the case of any sale by the Company of
Qualified Capital Stock of the Company, the aggregate net proceeds received by
the Company, after payment of expenses, commissions and the like incurred in
connection therewith, whether such proceeds are in cash or in other property
(valued as determined reasonably and in good faith by the Board of Directors of
the Company, as evidenced by a written resolution of said Board of Directors, at
the fair market value thereof at the time of receipt) and (ii) in the case of
any exchange, exercise, conversion or surrender of any outstanding Indebtedness
of the Company or any Restricted Subsidiary for or into shares of Qualified
Capital Stock of the Company, the amount of such Indebtedness (or, if such
Indebtedness was issued at an amount less than the stated principal amount
thereof, the accrued amount thereof as determined in

                                       40


accordance with GAAP) as reflected in the consolidated financial statements of
the Company prepared in accordance with GAAP as of the most recent date next
preceding the date of such exchange, exercise, conversion or surrender (plus any
additional amount required to be paid by the holders of such Indebtedness to the
Company or to any Wholly Owned Restricted Subsidiary of the Company upon such
exchange, exercise, conversion or surrender and less any and all payments made
to the holders of such Indebtedness, and all other expenses incurred by the
Company in connection therewith), in the case of each of clauses (i) and (ii) to
the extent consummated after the Series A/B Issue Date.

     "Net Income" means, with respect to any Person, the net income (loss) of
such Person, determined in accordance with GAAP and before any reduction in
respect of preferred stock dividends, excluding, however, (i) any gain (but not
loss), other than any gains associated with reimbursements for lost or damaged
rental tools in the ordinary course of business, together with any related
provision for taxes on such gain (but not loss), realized in connection with (a)
any Asset Sale (including, without limitation, dispositions pursuant to sale and
leaseback transactions) or other sale of assets or (b) the disposition of any
securities by such Person or any of its Restricted Subsidiaries or the
extinguishment of any Indebtedness of such Person or any of its Restricted
Subsidiaries; and (ii) any extraordinary or nonrecurring gain (but not loss),
together with any related provision for taxes on such extraordinary or
nonrecurring gain (but not loss).

     "Net Proceeds" means the aggregate cash proceeds received by the Company or
any of its Restricted Subsidiaries in respect of any Asset Sale (including,
without limitation, any cash received upon the sale or other disposition of any
non-cash consideration received in any Asset Sale), net of the direct costs
relating to such Asset Sale (including, without limitation, legal, accounting
and investment banking fees, and sales commissions) and any relocation expenses
incurred as a result thereof, taxes paid or payable as a result thereof (after
taking into account any available tax credits or deductions and any tax sharing
arrangements), amounts required to be applied to the repayment of Indebtedness
(other than Indebtedness under the senior credit facility) secured by a Lien on
the asset or assets that were the subject of such Asset Sale, amounts required
to be paid to any Person (other than the Company or any Restricted Subsidiary)
owning a beneficial interest in the asset or assets that were the subject of
such Asset Sale, and any reserve for adjustment in respect of the sale price of
such asset or assets established in accordance with GAAP.

     "Non-Recourse Indebtedness" means Indebtedness (i) as to which neither the
Company nor any of its Restricted Subsidiaries (A) provides credit support of
any kind (including any undertaking, agreement or instrument that would
constitute Indebtedness), (B) is directly or indirectly liable (as a Subsidiary
Guarantor or otherwise), or (C) constitutes the lender; (ii) no default with
respect to which (including any rights that the holders thereof may have to take
enforcement action against an Unrestricted Subsidiary) would permit (upon
notice, lapse of time or both) any holder of any other Indebtedness of the
Company or any of its Restricted Subsidiaries to declare a default on such other
Indebtedness or cause the payment thereof to be accelerated or payable prior to
its stated maturity; and (iii) as to which the lenders have been notified in
writing that they will not have any recourse to the stock or assets of the
Company or any of its Restricted Subsidiaries.

     "Non-Recourse Purchase Money Indebtedness" means Indebtedness or that
portion of Indebtedness of the Company or any Restricted Subsidiary incurred in
connection with the acquisition by the Company or such Restricted Subsidiary,
subsequent to the Series A/B Issue Date, of any property or assets and as to
which (i) the holders of such Indebtedness agree that they will look solely to
the property or assets so acquired (or, in the case of the acquisition of all of
the outstanding Capital Stock of a Person, the underlying properties and assets
of such Person at the time of such acquisition, including proceeds thereof) and
securing such Indebtedness for payment on or in respect of such Indebtedness,
and neither the Company nor any Restricted Subsidiary (a) provides credit
support, including any undertaking, agreement or instrument which would
constitute Indebtedness or (b) is directly or indirectly liable for such
Indebtedness, and (ii) no default with respect to such Indebtedness would permit
(after notice or passage of time or both), according to the terms thereof, any
holder of any Indebtedness of the Company or a Restricted Subsidiary to declare
a default on such Indebtedness or cause the payment thereof to be accelerated or
payable prior to its stated maturity; provided, however, that any portion of the
purchase price of such property or assets that is not financed through the
incurrence of such Indebtedness, shall be deemed to be a "Restricted Investment"
under the indenture, and shall only be permitted to be expended by the Company
or any Restricted Subsidiary to the extent that the Company would be permitted
to make a Restricted Payment in such amount under the terms of the covenant
described above under "-- Certain Covenants -- Restricted Payments."

                                       41


     "Permitted Indebtedness" means any of the following:

          (i) Indebtedness (and any guarantee thereof) under the Revolving
     Credit Facility in an aggregate principal amount at any one time
     outstanding not to exceed the greater of (A) $50 million, less any amounts
     derived from Asset Sales and applied to the permanent reduction of the
     Indebtedness thereunder as contemplated by the covenant described above
     under the caption "Repurchase at the Option of Holders -- Asset Sales" or
     (B) the sum of (1) 80% of the Company's Eligible Accounts Receivable (as
     defined in for purposes of the Revolving Credit Facility) and (2) 50% of
     the rig materials and supplies of the Company and its Restricted
     Subsidiaries determined in accordance with GAAP (the "Maximum Bank Facility
     Amount"), and any renewals, amendments, extensions, supplements,
     modifications, deferrals, refinancing or replacements (each, for purposes
     of this clause (i), a "refinancing") thereof, including any successive
     refinancing thereof, so long as the aggregate principal amount of any such
     new Indebtedness, together with the aggregate principal amount of all other
     Indebtedness outstanding pursuant to this clause (i), shall not at any one
     time exceed the Maximum Bank Facility Amount;

          (ii) Indebtedness under the Series A/B Notes, the Series D Notes and
     the new notes (excluding any additional new notes);

          (iii) Indebtedness under the Term Credit Facility, any Existing
     Indebtedness, and any Indebtedness under Letters of Credit existing on the
     Series A/B Issue Date;

          (iv) Indebtedness under Interest Rate Protection Obligations, provided
     that (A) such Interest Rate Protection Obligations are related to payment
     obligations on Permitted Indebtedness or Indebtedness otherwise permitted
     by the initial paragraph of the "Incurrence of Indebtedness and Issuance of
     Preferred Stock" covenant, and (B) the notional principal amount of such
     Interest Rate Protection Obligations does not exceed the principal amount
     of such Indebtedness to which such Interest Rate Protection Obligations
     relate;

          (v) Indebtedness under Currency Hedge Obligations, provided that (A)
     such Currency Hedge Obligations are related to payment obligations on
     Permitted Indebtedness or Indebtedness otherwise permitted by the initial
     paragraph of the "Incurrence of Indebtedness and Issuance of Preferred
     Stock" covenant or to the foreign currency cash flows reasonably expected
     to be generated by the Company and its Restricted Subsidiaries, and (B) the
     notional principal amount of such Currency Hedge Obligations does not
     exceed the principal amount of such Indebtedness and the amount of such
     foreign currency cash flows to which such Currency Hedge Obligations
     relate;

          (vi) the Subsidiary Guarantees of the Series A/B Notes, the Series D
     Notes and the new notes, and any additional new notes subsequently issued,
     but only to the extent that the Indebtedness represented by such additional
     new notes is otherwise permitted under the indenture, and the exchange
     notes (and any assumption of the obligations guaranteed thereby);

          (vii) Indebtedness of the Company to a Wholly Owned Restricted
     Subsidiary and Indebtedness of any Restricted Subsidiary of the Company to
     the Company or a Wholly Owned Restricted Subsidiary, provided, however,
     that upon any subsequent issuance or transfer of any Capital Stock or any
     other event which results in any such Wholly Owned Restricted Subsidiary
     ceasing to be a Wholly Owned Restricted Subsidiary or any other subsequent
     transfer of any such Indebtedness (except to the Company or a Wholly Owned
     Restricted Subsidiary), such Indebtedness shall be deemed, in each case, to
     be incurred and shall be treated as an incurrence for purposes of the
     initial paragraph of the "Incurrence of Indebtedness and Issuance of
     Preferred Stock" covenant at the time the Wholly Owned Restricted
     Subsidiary in question ceased to be a Wholly Owned Restricted Subsidiary or
     the time such subsequent transfer occurred;

          (viii) Indebtedness in respect of bid, performance or surety bonds
     issued for the account of the Company or any Restricted Subsidiary thereof
     in the ordinary course of business, including guarantees or obligations of
     the Company or any Restricted Subsidiary thereof with respect to letters of
     credit supporting such bid, performance or surety obligations (in each case
     other than for an obligation for money borrowed);

                                       42


          (ix) the incurrence by the Company or its Restricted Subsidiaries of
     Non-Recourse Purchase Money Indebtedness;

          (x) any Permitted Refinancing Indebtedness incurred by the Company or
     a Restricted Subsidiary of any Indebtedness incurred pursuant to clause
     (ii) or (iii) of this definition, including any successive refinancing by
     the Company or such Restricted Subsidiary; and

          (xi) any additional Indebtedness in an aggregate principal amount not
     in excess of $30 million at any one time outstanding and any guarantee
     thereof.

     "Permitted Investments" means any of the following: (i) Investments in Cash
Equivalents; (ii) Investments in the Company or any of its Wholly Owned
Restricted Subsidiaries; (iii) Investments by the Company or any of its
Restricted Subsidiaries in another Person, if as a result of such Investment (A)
such other Person becomes a Wholly Owned Restricted Subsidiary or (B) such other
Person is merged or consolidated with or into, or transfers or conveys all or
substantially all of its properties and assets to, the Company or a Wholly Owned
Restricted Subsidiary; (iv) Investments permitted under the covenant described
above under the caption "-- Repurchase at the Option of Holders -- Asset Sales";
(v) Investments made in the ordinary course of business in prepaid expenses,
lease, utility, workers' compensation, performance and other similar deposits;
(vi) Investments in stock, obligations or securities received in settlement of
debts owing to the Company or any Restricted Subsidiary as a result of
bankruptcy or insolvency proceedings or upon the foreclosure, perfection or
enforcement of any Lien in favor of the Company or any Restricted Subsidiary, in
each case as to debt owing to the Company or any Restricted Subsidiary that
arose in the ordinary course of business of the Company or any such Restricted
Subsidiary, provided that any stocks, obligations or securities received in
settlement of debts that arose in the ordinary course of business (and received
other than as a result of bankruptcy or insolvency proceedings or upon
foreclosure, perfection or enforcement of any Lien) that are, within 30 days of
receipt, converted into cash or Cash Equivalents shall be treated as having been
cash or Cash Equivalents at the time received; (vii) other Investments in joint
ventures, corporations, limited liability companies or partnerships formed with
or organized by third Persons, which joint ventures, corporations, limited
liability companies or partnerships, engage in the Drilling Business and are not
Unrestricted Subsidiaries at the time of such Investment, provided such
Investments do not, in the aggregate, exceed $35 million; and (viii) Investments
in AralParker CJSC represented by its note payable in a principal amount of up
to $50 million.

     "Permitted Liens" means the following types of Liens:

          (a) Liens existing as of the Series A/B Issue Date;

          (b) Liens securing the Series D Notes, the new notes, any additional
     new notes subsequently issued, the exchange notes or the Subsidiary
     Guarantees;

          (c) Liens in favor of the Company;

          (d) Liens securing Indebtedness that constitutes Permitted
     Indebtedness pursuant to clause (i) or (iii) of the definition of Permitted
     Indebtedness;

          (e) Liens for taxes, assessments and governmental charges or claims
     either (i) not delinquent or (ii) contested in good faith by appropriate
     proceedings and as to which the Company or its Restricted Subsidiaries
     shall have set aside on its books such reserves as may be required pursuant
     to GAAP;

          (f) statutory Liens of landlords and Liens of carriers, warehousemen,
     mechanics, suppliers, materialmen, repairmen and other Liens imposed by law
     incurred in the ordinary course of business for sums not delinquent or
     being contested in good faith, if such reserve or other appropriate
     provision, if any, as shall be required by GAAP shall have been made in
     respect thereof;

          (g) Liens incurred or deposits made in the ordinary course of business
     in connection with workers' compensation, unemployment insurance and other
     types of social security, or to secure the

                                       43


     payment or performance of tenders, statutory or regulatory obligations,
     surety and appeal bonds, bids, government contracts and leases, performance
     and return of money bonds and other similar obligations (exclusive of
     obligations for the payment of borrowed money);

          (h) judgment Liens not giving rise to an Event of Default so long as
     any appropriate legal proceedings which may have been duly initiated for
     the review of such judgment shall not have been finally terminated or the
     period within which such proceeding may be initiated shall not have
     expired;

          (i) any interest or title of a lessor under any Capital Lease
     Obligation or operating lease;

          (j) Liens securing Non-Recourse Purchase Money Indebtedness and other
     purchase money Liens; provided, however, that (i) the related Non-Recourse
     Purchase Money Indebtedness or other purchase money Indebtedness shall not
     be secured by any property or assets of the Company or any Restricted
     Subsidiary other than the property or assets so acquired (or, in the case
     of the acquisition of all of the outstanding Capital Stock of a Person, the
     underlying properties and assets of such Person at the time of such
     acquisition, including proceeds thereof) and any proceeds therefrom and
     (ii) the Lien securing any such Indebtedness shall be created within 90
     days of such acquisition;

          (k) Liens securing obligations under or in respect of either Currency
     Hedge Obligations or Interest Rate Protection Obligations;

          (l) Liens upon specific items of inventory or other goods of any
     Person securing such Person's obligations in respect of bankers acceptances
     issued or created for the account of such Person to facilitate the
     purchase, shipment or storage of such inventory or other goods;

          (m) Liens securing reimbursement obligations with respect to
     commercial letters of credit that encumber documents and other property or
     assets relating to such letters of credit and products and proceeds
     thereof;

          (n) Liens encumbering deposits made to secure obligations arising from
     statutory, regulatory, contractual or warranty requirements of the Company
     or any of its Restricted Subsidiaries, including rights of offset and
     set-off; and

          (o) Liens on, or related to, properties or assets to secure all or
     part of the costs incurred in the ordinary course of business for the
     exploration, drilling, development or operation thereof.

     "Permitted Refinancing Indebtedness" means any Indebtedness of the Company
or any of its Restricted Subsidiaries issued in exchange for, or the net
proceeds of which are used to extend, refinance, renew, replace, defease or
refund other Indebtedness of the Company or any of its Restricted Subsidiaries;
provided that: (i) the principal amount (or accreted value, if applicable) of
such Permitted Refinancing Indebtedness does not exceed the principal amount (or
accreted value, if applicable) of the Indebtedness so extended, refinanced,
renewed, replaced, defeased or refunded (plus the amount of reasonable expenses
incurred in connection therewith); (ii) such Permitted Refinancing Indebtedness
has a final maturity date later than the final maturity date of, and has a
Weighted Average Life to Maturity equal to or greater than the Weighted Average
Life to Maturity of, the Indebtedness being extended, refinanced, renewed,
replaced, defeased or refunded; (iii) if the Indebtedness being extended,
refinanced, renewed, replaced, defeased or refunded is subordinated in right of
payment to the new notes, such Permitted Refinancing Indebtedness has a final
maturity date later than the final maturity date of, and is subordinated in
right of payment to, the new notes on terms at least as favorable to the holders
of new notes as those contained in the documentation governing the Indebtedness
being extended, refinanced, renewed, replaced, defeased or refunded; and (iv)
with respect to any such Indebtedness of the Company being extended, refinanced,
renewed, replaced, defeased or refunded, such Permitted Refinancing Indebtedness
shall not be incurred by any Restricted Subsidiary.

     "Person" means any individual, corporation, limited liability company,
partnership, joint venture, association, joint stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

                                       44


     "Qualified Capital Stock" of any Person means any and all Capital Stock of
such Person other than Disqualified Stock.

     "Restricted Subsidiary" of a Person means any Subsidiary of the referent
Person that is not an Unrestricted Subsidiary.

     "Restricted Investment" means (without duplication) (i) the designation of
a Subsidiary as an Unrestricted Subsidiary in the manner described in the
definition of Unrestricted Subsidiary, (ii) any Investment other than a
Permitted Investment and (iii) any amount constituting a "Restricted Investment"
as contemplated in the definition of "Non-Recourse Purchase Money Indebtedness."

     "Revolving Credit Facility" means the revolving loan facility under the
senior credit facility.

     The term "senior credit facility" means, collectively, the Revolving Credit
Agreement and the Term Loan Agreement, each dated as of November 8, 1996, among
the Company, ING (U.S.) Capital Corporation ("ING") and the other lenders
identified therein, and ING, as agent, each as amended, modified, supplemented,
extended, restated, or renewed from time to time.

     "Series A/B indenture" means the indenture dated as of November 12, 1996
between the Company and JPMorgan Chase Bank (formerly Texas Commerce Bank,
National Association), as Trustee, providing for the issuance of the Series A/B
Notes in the aggregate principal amount of $300 million, as such may be amended
and supplemented from time to time.

     "Series A/B Issue Date" means November 12, 1996, the date on which the
Series A/B Notes were originally issued under the Series A/B indenture.

     "Series A/B Notes" means the Company's 9 3/4% Senior Notes due 2006, issued
pursuant to the Series A/B indenture, as such may be amended or supplemented
from time to time.

     "Series D Notes" means the Company's 9 3/4% Senior Notes due 2006, Series D
issued pursuant to the Series D indenture, as such may be amended or
supplemented from time to time.

     "Series D indenture" means the indenture dated as of March 11, 1998 between
the Company and JPMorgan Chase Bank (formerly Chase Bank of Texas National
Association), as Trustee, providing for the issuance of the Series D Notes in
the aggregate principal amount of up to $450 million, as such may be amended and
supplemented from time to time.

     "Significant Subsidiary" means any (a) Subsidiary that would be a
significant subsidiary as defined in Article 1, Rule 1-02 of Regulation S-X,
promulgated pursuant to the Securities Act, as such Regulation is in effect on
the date hereof and (b) any other Subsidiary that contributed more than 10% of
the Company's Consolidated Cash Flow for the most recent four fiscal quarters
for which financial statements are available.

     "Subordinated Indebtedness" means any Indebtedness of the Company or a
Subsidiary Guarantor that is expressly subordinated in right of payment to the
new notes or the Subsidiary Guarantees, as the case may be, including, without
limitation, the 5 1/2% Convertible Subordinated Notes due 2004 of the Company.

     "Subsidiary" means, with respect to any Person, (i) any corporation,
association or other business entity of which more than 50% of the total voting
power of shares of Capital Stock entitled (without regard to the occurrence of
any contingency) to vote in the election of directors, managers or trustees
thereof is at the time owned or controlled, directly or indirectly, by such
Person or one or more of the other Subsidiaries of that Person (or a combination
thereof) and (ii) any partnership (A) the sole general partner or the managing
general partner of which is such Person or a Subsidiary of such Person or (B)
the only general partners of which are such Person or of one or more
Subsidiaries of such Person (or any combination thereof).

     "Subsidiary Guarantee" means any guarantee of the new notes by any
Subsidiary Guarantor in accordance with the provisions described under "--
Subsidiary Guarantees."

                                       45


     "Subsidiary Guarantors" means each of (i) the Company's Significant
Subsidiaries on the Issue Date (other than any Exempt Foreign Subsidiary, as
designated by the Company) or any other Restricted Subsidiary that provides a
guarantee under the senior credit facility, (ii) any other Subsidiary that
executes a Subsidiary Guarantee in accordance with the provisions of the
indenture, and (iii) their respective successors and assigns, as required under
the indenture.

     "Term Credit Facility" means the term loans under the senior credit
facility in an aggregate amount not to exceed $100 million, less any amounts
derived from Asset Sales and applied to the permanent reduction of Indebtedness
thereunder as contemplated by the covenant described above under the caption "--
Repurchase at the Option of Holders -- Asset Sales."

     "Unrestricted Subsidiary" means any Subsidiary (or any successor to any of
them) that is designated by the Board of Directors as an Unrestricted Subsidiary
pursuant to a resolution of the Board of Directors; but only to the extent that
such Subsidiary (i) has no Indebtedness other than Non-Recourse Indebtedness;
(ii) is not party to any agreement, contract, arrangement or understanding with
the Company or any Restricted Subsidiary of the Company unless the terms of any
such agreement, contract, arrangement or understanding are no less favorable to
the Company or such Restricted Subsidiary than those that might be obtained at
the time from Persons who are not Affiliates of the Company; (iii) is a Person
with respect to which neither the Company nor any of its Restricted Subsidiaries
has any direct or indirect obligation (A) to subscribe for additional Equity
Interests or (B) to maintain or preserve such Person's financial condition or to
cause such Person to achieve any specified levels of operating results; and (iv)
has not guaranteed or otherwise directly or indirectly provided credit support
for any Indebtedness of the Company or any of its Restricted Subsidiaries. Any
such designation by the Board of Directors shall be evidenced to the Trustee by
filing with the Trustee a certified copy of the resolution of the Board of
Directors giving effect to such designation and an Officers' Certificate
certifying that such designation complied with the foregoing conditions and was
permitted by the covenant described above under the caption "-- Certain
Covenants -- Restricted Payments." If, at any time, any Unrestricted Subsidiary
would fail to meet the foregoing requirements as an Unrestricted Subsidiary, it
shall thereafter cease to be an Unrestricted Subsidiary for purposes of the
indenture and any Indebtedness of such Subsidiary shall be deemed to be incurred
by a Restricted Subsidiary of the Company as of such date (and, if such
Indebtedness is not permitted to be incurred as of such date under the covenant
described under the caption "-- Certain Covenants -- Incurrence of Indebtedness
and Issuance of Preferred Stock," the Company shall be in default of such
covenant). The Board of Directors of the Company may at any time designate any
Unrestricted Subsidiary to be a Restricted Subsidiary; provided that such
designation shall be deemed to be an incurrence of Indebtedness by a Restricted
Subsidiary of the Company of any outstanding Indebtedness of such Unrestricted
Subsidiary and such designation shall only be permitted if (i) such Indebtedness
is permitted under the covenant described under the caption "-- Certain
Covenants -- Incurrence of Indebtedness and Issuance of Preferred Stock," and
(ii) no Default or Event of Default would be in existence following such
designation.

     "Weighted Average Life to Maturity" means, when applied to any Indebtedness
at any date, the number of years obtained by dividing (i) the sum of the
products obtained by multiplying (A) the amount of each then remaining
installment, sinking fund, serial maturity or other required payments of
principal, including payment at final maturity, in respect thereof, by (B) the
number of years (calculated to the nearest one-twelfth) that will elapse between
such date and the making of such payment, by (ii) the then outstanding principal
amount of such Indebtedness.

     "Wholly Owned Restricted Subsidiary" means any Restricted Subsidiary to the
extent (i) all of the Capital Stock or other ownership interests in such
Restricted Subsidiary, other than any directors' qualifying shares mandated by
applicable law, is owned directly or indirectly by the Company or (ii) such
Restricted Subsidiary is organized in a foreign jurisdiction and is required by
the applicable laws and regulations of such foreign jurisdiction to be partially
owned by the government of such foreign jurisdiction or individual or corporate
citizens of such foreign jurisdiction in order for such Restricted Subsidiary to
transact business in such foreign jurisdiction, provided that the Company,
directly or indirectly, owns the remaining Capital Stock or ownership interests
in such Restricted Subsidiary and, by contract or otherwise, controls the
management and business of such Restricted Subsidiary and derives the economic
benefits of ownership of such Restricted Subsidiary to substantially the same
extent as if such Restricted Subsidiary were a wholly owned Subsidiary.

                                       46


     "Wholly Owned Subsidiary" means any Subsidiary to the extent (i) all of the
Capital Stock or other ownership interests in such Subsidiary, other than any
directors' qualifying shares mandated by applicable law, is owned directly or
indirectly by the Company or (ii) such Subsidiary is organized in a foreign
jurisdiction and is required by the applicable laws and regulations of such
foreign jurisdiction to be partially owned by the government of such foreign
jurisdiction or individual or corporate citizens of such foreign jurisdiction in
order for such Subsidiary to transact business in such foreign jurisdiction,
provided that the Company, directly or indirectly, owns the remaining Capital
Stock or ownership interests in such Subsidiary and, by contract or otherwise,
controls the management and business of such Subsidiary and derives the economic
benefits of ownership of such Subsidiary to substantially the same extent as if
such Subsidiary were a wholly owned Subsidiary.


                 CERTAIN U.S. FEDERAL INCOME TAX CONSIDERATIONS

     The following summary describes the material United States federal income
tax consequences of the exchange of the outstanding notes for exchange notes
that may be relevant to a beneficial owner of notes that is a citizen or
resident of the United States or a U.S. domestic corporation or that otherwise
is subject to United States federal income taxation on a net income basis in
respect of such notes (a "U.S. holder"). This summary is based on laws,
regulations, rulings and decisions now in effect, all of which are subject to
change. This summary deals only with U.S. holders that hold the outstanding
notes as capital assets, and does not address tax considerations applicable to
holders that may be subject to special tax rules, such as, but not limited to,
banks, tax-exempt entities, insurance companies or dealers in securities or
currencies, traders in securities electing to mark to market, persons that hold
the outstanding notes as a position in a "straddle" or conversion transaction,
or as part of a "synthetic security" or other integrated financial transaction
or persons that have a "functional currency" other than the U.S. dollar.

     We believe that the exchange of outstanding notes for exchange notes
pursuant to the exchange offer will not be treated as an "exchange" for federal
income tax purposes because the exchange notes will not be considered to differ
materially in kind or extent from the outstanding notes. Rather, the exchange
notes received by a holder will be treated as a continuation of the outstanding
notes in the hands of such holder. As a result, there will be no federal income
tax consequences to holders exchanging outstanding notes for exchange notes
pursuant to the exchange offer, the holding period of an exchange note will
include the holding period of the outstanding note and the basis of an exchange
note will be the same as the basis for the outstanding note immediately before
the exchange. Interest received on the outstanding notes through the date of the
closing of the exchange will be includible as ordinary income by holders who
exchange outstanding notes for exchange notes.

     There can be no assurance that the Internal Revenue Service will not
conclude that the exchange of the outstanding notes for exchange notes should be
treated differently than we expressed in the foregoing paragraph. No rulings
from the Internal Revenue Service have been or will be sought on the United
States federal income tax treatment of the exchange of notes. Holders should
consult their own tax advisors in determining the tax consequences to them, as a
result of their individual circumstances, of the exchange of the outstanding
notes for the exchange notes and of the ownership and disposition of exchange
notes received in the exchange offer, including the application of state, local,
foreign or other tax laws.


                              PLAN OF DISTRIBUTION

     Each broker-dealer that receives exchange notes for its own account
pursuant to the exchange offer must acknowledge that it will deliver a
prospectus in connection with any resale of such exchange notes. This
prospectus, as it may be amended or supplemented from time to time, may be used
by a broker-dealer in connection with resales of exchange notes received in
exchange for outstanding notes where such outstanding notes were acquired as a
result of market-making activities or other trading activities. We have agreed
that, starting on the expiration date and ending on the close of business 180
days after the expiration date, we will make this prospectus, as amended or
supplemented, available to any broker-dealer for use in connection with any such
resale.

     We will not receive any proceeds from any sale of exchange notes by
broker-dealers. Exchange notes received by broker-dealers for their own account
pursuant to the exchange offer may be sold from time to time in one or more
transactions in the over-the-counter market, in negotiated transactions, through
the writing of options on the

                                       47


exchange notes or a combination of such methods of resale, at market prices
prevailing at the time of resale, at prices related to such prevailing market
prices or at negotiated prices. Any such resale may be made directly to
purchasers or to or through brokers or dealers who may receive compensation in
the form of commissions or concessions from ay such broker-dealer and/or the
purchasers of any such exchange notes. Any broker-dealer that resells exchange
notes that were received by it for its own account pursuant to the exchange
offer and any broker or dealer that participates in a distribution of such
exchange notes may be deemed to be an "underwriter" within the meaning of the
Securities Act of 1933 and any profit resulting from any such resale of exchange
notes and any commission or concessions received by any such persons may be
deemed to be underwriting compensation under the Securities Act of 1933. The
letter of transmittal states that by acknowledging that it will deliver and by
delivering a prospectus, a broker-dealer will not be deemed to admit that it is
an "underwriter" within the meaning of the Securities Act of 1933.

     For a period of 180 days after the expiration date, we will promptly send
additional copies of this prospectus and any amendment or supplement to this
prospectus to any broker-dealer that requests such documents in the letter of
transmittal. We have agreed to pay all expenses incident to the exchange offer,
including the expenses of one counsel for the holders of the outstanding notes,
other than commissions or concessions of any brokers or dealers. We will
indemnify the holders of the outstanding notes, including any broker-dealers,
against certain liabilities, including liabilities under the Securities Act of
1933.


                                  LEGAL MATTERS

     The validity of the exchange notes will be passed upon for us by Conner &
Winters, P.C., Tulsa, Oklahoma.


                             INDEPENDENT ACCOUNTANTS

     The consolidated financial statements of Parker Drilling Company and
subsidiaries incorporated in this Prospectus by reference to Parker Drilling
Company's Current Report on Form 8-K dated June 28, 2002 have been so
incorporated in reliance on the report of PricewaterhouseCoopers LLP,
independent accountants, given on the authority of said firm as experts in
auditing and accounting.

     With respect to the unaudited financial information of Parker Drilling
Company and subsidiaries for the three-month periods ended March 31, 2002 and
2001, incorporated in the Prospectus by reference, PricewaterhouseCoopers LLP
reported that they have applied limited procedures in accordance with
professional standards for a review of such information. However, their separate
report dated April 22, 2002 incorporated by reference herein, states that they
did not audit and they do not express an opinion on that unaudited financial
information. Accordingly, the degree of reliance on their report on such
information should be restricted in light of the limited nature of the review
procedures applied. PricewaterhouseCoopers LLP is not subject to the liability
provisions of Section 11 of the Securities Act of 1933 for their report on the
unaudited financial information because that report is not a "report" or a
"part" of the registration statement prepared or certified by
PricewaterhouseCoopers LLP within the meaning of Sections 7 and 11 of the
Securities Act of 1933.

                                       48


YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED IN THIS PROSPECTUS. WE HAVE
NOT AUTHORIZED ANYONE TO PROVIDE YOU WITH DIFFERENT INFORMATION. WE ARE NOT
MAKING AN OFFER OF THESE SECURITIES IN ANY JURISDICTION WHERE THE OFFER IS NOT
PERMITTED. YOU SHOULD NOT ASSUME THAT THE INFORMATION CONTAINED OR INCORPORATED
BY REFERENCE HEREIN IS CORRECT AS OF ANY DATE OTHER THAN THE DATE HEREOF.

                                ----------------

YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED IN THIS PROSPECTUS. WE HAVE
NOT AUTHORIZED ANYONE TO PROVIDE YOU WITH DIFFERENT INFORMATION.  WE ARE NOT
MAKING AN OFFER OF THESE SECURITIES IN ANY JURISDICTION WHERE THE OFFER IS NOT
PERMITTED. YOU SHOULD NOT ASSUME THAT THE INFORMATION CONTAINED OR INCORPORATED
BY REFERENCE HEREIN IS CORRECT AS OF ANY DATE OTHER THAN THE DATE HEREOF.

                                ----------------


                                TABLE OF CONTENTS



                                                         Page
                                                         ----
                                                      
Where You Can Find More Information                         i
Summary                                                     1
Forward-Looking Statements                                  6
Risk Factors                                                6
The Exchange Offer                                         12
Use of Proceeds                                            17
Description of Certain Indebtedness                        17
Description of the Exchange Notes                          19
Certain U.S. Federal Income Tax Considerations             47
Plan of Distribution                                       47
Legal Matters                                              48
Independent Accountants                                    48



                             PARKER DRILLING COMPANY

                         [PARKER DRILLING COMPANY LOGO]

                                OFFER TO EXCHANGE
                              UP TO $235,612,000 OF
                         10 1/8% SENIOR NOTES DUE 2009,
                            SERIES B, FOR OUTSTANDING
                         10 1/8% SENIOR NOTES DUE 2009,
                                    SERIES A





                                ----------------
                                   PROSPECTUS
                                ----------------





                                  ______, 2002








                                     PART II

                   INFORMATION NOT REQUIRED IN THE PROSPECTUS

ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS

         The Company's By-Laws provide that each person who was or is made a
party to, or is involved in, any action, suit or proceeding by reason of the
fact that he or she was a director or officer of the Company (or was serving at
the request of the Company as a director, officer, employee or agent for another
entity) will be indemnified and held harmless by the Company, to the full extent
authorized by the Delaware General Corporation Law. Under Section 145 of the
Delaware General Corporation Law, a corporation may indemnify a director,
officer, employee or agent of the corporation against expenses (including
attorneys' fees), judgments, fines and amounts paid in settlement actually and
reasonably incurred by him or her if he or she acted in good faith and in a
manner he or she reasonably believed to be in or not opposed to the best
interests of the corporation and, with respect to any criminal action or
proceeding, had no reasonable cause to believe his or her conduct was unlawful.
In the case of an action brought by or in the right of a corporation, the
corporation may indemnify a director, officer, employee or agent of the
corporation against expenses (including attorneys' fees) actually and reasonably
incurred by him or her if he or she acted in good faith and in a manner he or
she reasonably believed to be in the best interests of the corporation, except
that no indemnification shall be made in respect of any claim, issue or matter
as to which such person shall have been adjudged to be liable to the corporation
unless a court finds that, in view of all the circumstances of the case, such
person is fairly and reasonably entitled to indemnity for such expenses as the
court shall deem proper. The Company's Certificate of Incorporation provides
that to the fullest extent permitted by Delaware General Corporation Law as the
same exists or may hereafter be amended, a director of the Company shall not be
liable to the Company or its stockholders for monetary damages for breach of
fiduciary duty as a director. The Delaware General Corporation Law permits
Delaware corporations to include in their certificates of incorporation a
provision eliminating or limiting director liability for monetary damages
arising from breaches of their fiduciary duty. The only limitations imposed
under the statute are that the provision may not eliminate or limit a director's
liability (i) for breaches of the director's duty of loyalty to the corporation
or its stockholders, (ii) for acts or omissions not in good faith or involving
intentional misconduct or known violations of law, (iii) for the payment of
unlawful dividends or unlawful stock purchases or redemptions, or (iv) for
transactions in which the director received an improper personal benefit. The
Company is insured against liabilities which it may incur by reason of its
indemnification of officers and directors in accordance with its By-Laws. In
addition, directors and officers are insured, at the Company's expense, against
certain liabilities which might arise out of their employment and are not
subject to indemnification under the By-Laws. The foregoing summaries are
necessarily subject to the complete text of the statute, Certificate of
Incorporation, By-Laws and agreements referred to above and are qualified in
their entirety by reference thereto.

ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

         The following instruments and documents are included as Exhibits to
this Registration Statement. Exhibits incorporated by reference are so indicated
by parenthetical information.

Exhibit No.                Exhibit Description

3.1                        Corrected Restated Certificate of Incorporation of
                           the Company as amended September 21, 1998
                           (incorporated by reference to Exhibit 3(c) to Annual
                           Report on form 10-K for the fiscal year ended August
                           31, 1998.)

3.2                        By-Laws of the Company as amended July 27, 1999
                           (incorporated by reference to Exhibit 3 of the
                           Company's Quarterly Report on form 10-Q for the three
                           months ended September 30, 1999.)

4.1*                       Indenture dated as of May 2, 2002, between the JP
                           Morgan Chase Bank as Trustee, the Registrant and
                           Subsidiary Guarantors, relating to the 10 1/8% Senior
                           notes due 2009 of the Registrant (the "Indenture"),
                           which includes the form of global note.



                                      II-1



4.2*                       Registration Rights Agreement, dated May 2, 2002,
                           among the Registrant, Subsidiary Guarantors and
                           Jeffries & Company, Inc.

5.1*                       Opinion of Conner & Winters, P.C.

12.1*                      Computation of Ratio of Earnings to Fixed Charges

15.1*                      Letter re Unaudited Interim Financial Information

23.1*                      Consent of PricewaterhouseCoopers LLP

23.3*                      Consent of Conner & Winters, P.C. (included in
                           Exhibit 5.1).

24.1*                      Power of Attorney (set forth on the signature page to
                           this Registration Statement).

25.1*                      Form T-1 with respect to the eligibility of the
                           Trustee with respect to the Indenture.

*   Filed herewith



ITEM 22. UNDERTAKINGS

(a)  The undersigned Registrant hereby undertakes:

     (1)  To file, during any period in which offers or sales are being made, a
     post-effective amendment to this Registration Statement:

          (i)    To include any prospectus required by Section 10(a)(3) of the
          Securities Act of 1933;

          (ii)   To reflect in the prospectus any facts or events arising after
          the effective date of this Registration Statement (or the most recent
          post-effective amendment thereof) which, individually or in the
          aggregate, represent a fundamental change in the information set forth
          in this Registration Statement. Notwithstanding the foregoing, any
          increase or decrease in volume of securities offered (if the total
          dollar value of securities offered would not exceed that which was
          registered) and any deviation from the low or high end of the
          estimated maximum offering range may be reflected in the form of
          prospectus filed with the Commission pursuant to Rule 424(b) if, in
          the aggregate, the changes in volume and price represent no more than
          a 20 percent change in the maximum aggregate offering price set forth
          in the "Calculation of Registration Fee" table in this effective
          Registration Statement; and

          (iii)  To include any material information with respect to the plan of
          distribution not previously disclosed in this Registration Statement
          or any material change to such information in this Registration
          Statement;

     (2)  That, for the purpose of determining any liability under the
     Securities Act of 1933, each such post-effective amendment shall be deemed
     to be a new registration statement relating to the securities offered
     therein, and the offering of such securities at that time shall be deemed
     to be the initial bona fide offering thereof.

     (3)  To remove from registration by means of a post-effective amendment any
     of the securities being registered which remain unsold at the termination
     of the offering.

(b)  The Company hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the Company's annual report
pursuant to section 13(a) or section 15(d) of the Exchange Act (and, where
applicable, each filing of an employee benefit plan's annual report pursuant to
section 15(d) of the Exchange Act) that is incorporated by reference in the
Registration Statement shall be deemed to be a new registration statement
relating to the securities offered therein, and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

(c)  Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the Company
pursuant to the provisions described under Item 15 above, or otherwise, the
Company has been advised that, in the opinion of the Securities and Exchange
Commission, such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by the
registrant of expenses incurred or paid by a director, officer or controlling
person of the Company in the successful defense of any action, suit or
proceeding) is asserted by such director, officer or controlling person in
connection with the securities being registered, the Company will, unless, in
the opinion of its counsel, the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.

(d)  The undersigned registrant hereby undertakes to respond to requests for
information that is incorporated by reference into the Prospectus pursuant to
Item 4, 10(b), 11, or 13 of this form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the effective date of the Registration Statement through the
date of responding to the request. The undersigned registrant hereby undertakes
to supply by means of a post-effective amendment all information concerning a
transaction, and the company being acquired involved therein, that was not the
subject of and included in the Registration Statement when it became effective.

                                      II-2





                                   SIGNATURES

Pursuant to the requirements of the Securities Act, the Registrant has duly
caused this registration statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Houston, State of Texas,
on July 1, 2002.

                                  PARKER DRILLING COMPANY

                                  /s/ ROBERT L. PARKER JR.
                                  ----------------------------------------------
                                  By: Robert L. Parker Jr.
                                  Title: President and Chief Executive Officer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.


<Table>
<Caption>

Signature                             Title                               Date
                                                                    


/s/ ROBERT L. PARKER                 Chairman of the Board                July 1, 2002
- ------------------------------------
Robert L. Parker


/s/ ROBERT L. PARKER, JR.             President, Chief Executive          July 1, 2002
- ------------------------------------  Officer and Director (Principal
Robert L. Parker Jr.                  Executive Officer)

/s/ JAMES W. LINN
- ------------------------------------  Director                            July 1, 2002
James W. Linn


- ------------------------------------  Director
Bernard Duroc-Danner

/s/ DAVID L. FIST
- ------------------------------------  Director                            July 1, 2002
David L. Fist

/s/ R. RUDOLPH REINFRANK
- ------------------------------------  Director                            July 1, 2002
R. Rudolph Reinfrank


- ------------------------------------  Director
Simon G. Kukes


- ------------------------------------  Director
John W. Gibson

/s/ JAMES E. BARNES
- ------------------------------------  Director                            July 1, 2002
James E. Barnes

/s/ ROBERT M. GATES
- ------------------------------------  Director                            July 1, 2002
Robert M. Gates

/s/ JAMES J. DAVIS
- ------------------------------------  Senior Vice President - Finance     July 1, 2002
James J. Davis                        and Chief Financial Officer
                                      (Principal Financial and
                                      Accounting Officer)
</Table>


                                      II-3


                                   Signatures


     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                       PARKER DRILLING COMPANY OF
                                       OKLAHOMA, INCORPORATED

                                       By /s/ DAVID W. TUCKER
                                          --------------------------------------
                                              David W. Tucker
                                              Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                       Date
                                                            


- ------------------------------------  Director
Ross D. Murphy

/s/ DAVID W. TUCKER
- ------------------------------------  Director                    July 1, 2002
David W. Tucker

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                    July 1, 2002
Theophile Begnaud
</Table>


Pursuant to the requirements of the Securities Act of 1933, the Registrant has
duly caused this Registration Statement or Amendment to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Houston, the State
of Texas, on July 1, 2002.

                                      PARKER TECHNOLOGY, INC.

                                      By: /s/ DAVID W. TUCKER
                                         --------------------------------------
                                         David W. Tucker
                                         Vice President and Treasurer


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange



                                      II-4


Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents and either of them, or
their substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement or Amendment has been signed by the following persons in the
capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver

/s/ DENIS GRAHAM
- ------------------------------------  Director                            July 1, 2002
Denis Graham


- ------------------------------------  Director
Patrick Seals
</Table>


                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                  PARKER DRILLING COMPANY INTERNATIONAL LIMITED

                                  By: /s/ DAVID W. TUCKER
                                     ------------------------------------------
                                       David W. Tucker
                                       Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass


- ------------------------------------  Director
Ross D. Murphy

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                    CHOCTAW INTERNATIONAL RIG CORP.

                                    By: /s/ DAVID W. TUCKER
                                       ----------------------------------------
                                          David W. Tucker
                                          Vice President and Treasurer



                                      II-5


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker


- ------------------------------------  Director
Ross D. Murphy
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                    PARKER DRILLING COMPANY LIMITED (Nevada)

                                    By: /s/ DAVID W. TUCKER
                                        ---------------------------------------
                                           David W. Tucker
                                           Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass

/s/ STEVE PITTILLO
- ------------------------------------  Director                            July 1, 2002
Steve Pittillo
</Table>



                                      II-6


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                 PARKER DRILLING COMPANY LIMITED (Oklahoma)

                                 By: /s/ DAVID W. TUCKER
                                     ------------------------------------------
                                         David W. Tucker
                                         Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver


- ------------------------------------  Director                            ----------------------------------
Patrick Seals
</Table>



(Oklahoma)

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                    PARKER DRILLING COMPANY
                                    OF NEW GUINEA, INC.

                                    By: /s/ DAVID W. TUCKER
                                        ---------------------------------------
                                           David W. Tucker
                                           Vice President and Treasurer



                                      II-7


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.


<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ J. FRED HAMBLEN, II
- ------------------------------------  Director                            ----------------------------------
J. Fred Hamblen, II

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            ----------------------------------
Theophile Begnaud


- ------------------------------------  Director                            ----------------------------------
Ross D. Murphy
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.


                             PARKER DRILLING COMPANY
                             NORTH AMERICA, INC.

                             By:  /s/ DAVID W. TUCKER
                                -----------------------------------------------
                                    David W. Tucker
                                    Vice President

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ STEVE PITTILLO
- ------------------------------------  Director                            July 1, 2002
Steve Pittillo

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver
</Table>



                                      II-8


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                     PARKER DRILLING U.S.A LTD.

                                     By:     /s/ DAVID W. TUCKER
                                        ---------------------------------------
                                             David W. Tucker
                                             Vice President

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David w. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver

/s/ STEVE PITTILLO
- ------------------------------------  Director                            July 1, 2002
Steve Pittillo
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                       PARKER-VSE, INC (formerly VANCE SYSTEMS
                                       ENGINEERING, INC.)

                                       By:  /s/ DAVID W. TUCKER
                                           ------------------------------------
                                              David W. Tucker
                                              Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below




                                      II-9


any and all amendments (including post-effective amendments) to this
Registration Statement, and to file the same, with all exhibits thereto and
other documents in connection therewith, with the Securities and Exchange
Commission, granting unto said attorneys-in-fact and agents, and each of them,
full power and authority to do and perform each and every act and thing
requisite and necessary to be done in and about the premises, as fully to all
intents and purposes as he might or could do in person, hereby ratifying and
confirming all that said attorneys-in-fact and agents and either of them, or
their substitutes, may lawfully do or cause to be done by virtue hereof.
Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement or Amendment has been signed by the following persons in the
capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver


- ------------------------------------  Director
Patrick Seals
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.


                                       DGH, INC.

                                       By:  /s/ DAVID W. TUCKER
                                           -------------------------------------
                                             David W. Tucker
                                             Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker


- ------------------------------------  Director
Ross D. Murphy
</Table>



                                      II-10



                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                         PARKER DRILLING OFFSHORE USA, L.L.C.
                                         (formerly MALLARD BAY DRILLING, L.L.C.)


                                         By:    /s/ STEVE PITTILLO
                                             -----------------------------------
                                                Steve Pittillo
                                                President and Manager

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ STEVE PITTILLO
- ------------------------------------  President, Chief Executive          July 1, 2002
Steve Pittillo                        Officer and Manager

- ------------------------------------  Director


- ------------------------------------  Director
</Table>



                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                        QUAIL TOOLS, LLP

                                        By:   /s/ JAMES J. DAVIS
                                           -------------------------------------
                                               James J. Davis
                                               Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact




                                     II-11


and agents and either of them, or their substitutes, may lawfully do or cause to
be done by virtue hereof. Pursuant to the requirements of the Securities Act of
1933, this Registration Statement or Amendment has been signed by the following
persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ JAMES J. DAVIS
- ------------------------------------  Vice President and Treasurer        July 1, 2002
James J. Davis

/s/ R. MARC  WHITE
- ------------------------------------  Vice President-Operations           July 1, 2002
R. Marc  White

- ------------------------------------
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas on July 1, 2002.

                                        PARKER USA DRILLING COMPANY (formerly
                                        PARCAN LIMITED)

                                        By:    /s/ DAVID W. TUCKER
                                            ------------------------------------
                                               David W. Tucker
                                               Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas on July 1, 2002.

                                     PARKER TECHNOLOGY, LLC

                                     By:   /s/ DAVID W. TUCKER
                                        ----------------------------------------
                                           David W. Tucker
                                           Vice President and Manager



                                     II-12


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and ________________, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DENIS GRAHAM
- ------------------------------------  President                           July 1, 2002
Denis Graham

- ------------------------------------


- ------------------------------------
Kenneth R. Hoitt
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                      PARKER DRILLING OFFSHORE CORPORATION
                                      (formerly HERCULES OFFSHORE CORPORATION)

                                      By: /s/ DAVID W. TUCKER
                                          --------------------------------------
                                              David W. Tucker
                                              Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver

/s/ STEVE PITTILLO
- ------------------------------------  Director                            July 1, 2002
Steve Pittillo
</Table>



                                     II-13


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                    PARKER DRILLING OFFSHORE
                                    INTERNATIONAL, INC.

                                    By:    /s/ DAVID W. TUCKER
                                        ----------------------------------------
                                           David W. Tucker
                                           Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud


- ------------------------------------  Director
Ross D. Murphy
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.


                                  ANACHORETA, INC.

                                  By:        /s/ DAVID W. TUCKER
                                      ------------------------------------------
                                             David W. Tucker
                                             Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same,



                                     II-14


with all exhibits thereto and other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said attorneys-in-fact and
agents, and each of them, full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the
premises, as fully to all intents and purposes as he might or could do in
person, hereby ratifying and confirming all that said attorneys-in-fact and
agents and either of them, or their substitutes, may lawfully do or cause to be
done by virtue hereof. Pursuant to the requirements of the Securities Act of
1933, this Registration Statement or Amendment has been signed by the following
persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass


- ------------------------------------  Director
Patrick Seals

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                             PARDRIL, INC.

                                             By:    /s/ DAVID W. TUCKER
                                                 -------------------------------
                                                    David W. Tucker
                                                    Vice President

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ ROSS D. MURPHY
- ------------------------------------  Director                            July 1, 2002
Ross D. Murphy


- ------------------------------------  Director
Patrick Seals
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                       PARKER AVIATION, INC.

                                       By:        /s/ DAVID W. TUCKER
                                           -------------------------------------
                                                  David W. Tucker
                                                  Vice President and Treasurer


                                     II-15



KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ JAMES W. BLAKEY
- ------------------------------------  Director                            July 1, 2002
James W. Blakey

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker


- ------------------------------------  Director
Patrick Seals
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                      PARKER DRILLING (KAZAKSTAN), LTD.

                                      By:        /s/ DAVID W. TUCKER
                                          --------------------------------------
                                                 David W. Tucker
                                                 Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

- ------------------------------------  Director
Ross D. Murphy
</Table>


                                     II-16


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                    PARKER DRILLING COMPANY OF NIGER

                                    By: /s/ DAVID W. TUCKER
                                        ----------------------------------------
                                               David W. Tucker
                                               Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ JOHN R. GASS
- ------------------------------------  Director                            July 1, 2002
John R. Gass

/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

- ------------------------------------  Director
Ross D. Murphy
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of , on July 1, 2002.

                                    PARKER NORTH AMERICA
                                    OPERATIONS, INC.

                                    By: /s/ DAVID W. TUCKER
                                        ----------------------------------------
                                               David W. Tucker
                                               Vice President and Treasurer



                                     II-17


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud
</Table>

                                   SIGNATURES


     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                       SELECTIVE DRILLING CORPORATION

                                       By: /s/ DAVID W. TUCKER
                                           -------------------------------------
                                              David W. Tucker
                                              Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David w. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ PATRICK SEALS
- ------------------------------------  Director                            July 1, 2002
Patrick Seals

/s/ Theophile Begnaud
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud
</Table>


                                     II-18



                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                     UNIVERSAL RIG SERVICE CORP.

                                     By: /s/ DAVID W. TUCKER
                                         ---------------------------------------
                                                David W. Tucker
                                                Vice President and Treasurer


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

- ------------------------------------  Director
Patrick Seals

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Tulsa, the
State of Oklahoma, on July 1, 2002.

                                  PARKER DRILLING MANAGEMENT SERVICES, INC.


                                  By: /s/ DAVID W. TUCKER
                                      ------------------------------------------
                                              David W. Tucker
                                              President

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.


                                     II-19



                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                     INTERNATIONAL EQUIPMENT LEASING COMPANY

                                     By: /s/ DAVID W. TUCKER
                                         ---------------------------------------
                                                David W. Tucker
                                                Vice President and Treasurer


KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker


- ------------------------------------  Director
Ross D. Murphy

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud
</Table>


                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Tulsa, the
State of Oklahoma, on July 1, 2002.

                                  PARKER DRILLING COMPANY OF COLOMBIA LIMITED


                                  By:     /s/ DOUGLAS WALTER PARKER
                                      ------------------------------------------
                                              Douglas Walter Parker
                                              President

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ STEVEN L. CARMICHAEL
- ------------------------------------  Director                            July 1, 2002
Steven L. Carmichael


- ------------------------------------  Director
Ross D. Murphy

/s/ DOUGLAS W. PARKER
- ------------------------------------  Director                            July 1, 2002
Douglas W. Parker
</Table>



                                     II-19



<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ BRUCE J. KORVER
- ------------------------------------  Director                            July 1, 2002
Bruce J. Korver


- ------------------------------------  Director
Patrick Seals
</Table>

                                   SIGNATURES

     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Registration Statement or Amendment to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
the State of Texas, on July 1, 2002.

                                      CREEK INTERNATIONAL RIG CORP.

                                      By: /s/ DAVID W. TUCKER
                                          --------------------------------------
                                                 David W. Tucker
                                                 Vice President and Treasurer

KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears below
constitutes and appoints James J. Davis and David W. Tucker, and each of them
(with full power to each of them to act alone), his true and lawful
attorney-in-fact and agent, with full power of substitution and resubstitution,
for him and in his name, place and stead, in any and all capacities, to sign on
his behalf individually and in each capacity stated below any and all amendments
(including post-effective amendments) to this Registration Statement, and to
file the same, with all exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do
and perform each and every act and thing requisite and necessary to be done in
and about the premises, as fully to all intents and purposes as he might or
could do in person, hereby ratifying and confirming all that said
attorneys-in-fact and agents and either of them, or their substitutes, may
lawfully do or cause to be done by virtue hereof. Pursuant to the requirements
of the Securities Act of 1933, this Registration Statement or Amendment has been
signed by the following persons in the capacities and on the dates indicated.

<Table>
<Caption>

Signature                             Title                               Date
                                                                    
/s/ DAVID W. TUCKER
- ------------------------------------  Director                            July 1, 2002
David W. Tucker

/s/ THEOPHILE BEGNAUD
- ------------------------------------  Director                            July 1, 2002
Theophile Begnaud


- ------------------------------------  Director
Ross D. Murphy
</Table>




                                     II-20


                                  EXHIBIT INDEX



<Table>
<Caption>
Exhibit No.       Exhibit Description
- -----------       -------------------
               
3.1               Corrected Restated Certificate of Incorporation of the Company
                  as amended September 21, 1998 (incorporated by reference to
                  Exhibit 3(c) to Annual Report on form 10-K for the fiscal year
                  ended August 31, 1998.)

3.2               By-Laws of the Company as amended July 27, 1999 (incorporated
                  by reference to Exhibit 3 of the Company's Quarterly Report on
                  form 10-Q for the three months ended September 30, 1999.)

4.1*              Indenture dated as of May 2, 2002, between the JP Morgan Chase
                  Bank as Trustee, the Registrant and Subsidiary Guarantors,
                  relating to the 10 1/8% Senior notes due 2009 of the Registrant
                  (the "Indenture"), which includes the form of global note.

4.2*              Registration Rights Agreement, dated May 2, 2002, among the
                  Registrant, Subsidiary Guarantors and Jeffries & Company, Inc.

5.1*              Opinion of Conner & Winters, P.C.

12.1*             Computation of Ratio of Earnings to Fixed Charges

15.1*             Letter re Unaudited Interim Financial Information

23.1*             Consent of PricewaterhouseCoopers LLP

23.3*             Consent of Conner & Winters, P.C. (included in Exhibit 5.1).

24.1*             Power of Attorney (set forth on the signature page to this
                  Registration Statement).

25.1*             Form T-1 with respect to the eligibility of the Trustee with
                  respect to the Indenture.
</Table>

* filed herewith



                                     II-21