1
 
                             LETTER OF TRANSMITTAL
 
                           DAILEY INTERNATIONAL INC.
 
                             OFFER TO EXCHANGE ITS
                     9 3/4% SERIES B SENIOR NOTES DUE 2007
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                       FOR ANY AND ALL OF ITS OUTSTANDING
                     9 3/4% SERIES A SENIOR NOTES DUE 2007
                       (PRINCIPAL AMOUNT $1,000 PER NOTE)
              PURSUANT TO THE PROSPECTUS DATED OCTOBER    , 1997.
 
THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY
TIME, ON NOVEMBER   , 1997, UNLESS THE OFFER IS EXTENDED.
 
                 THE EXCHANGE AGENT FOR THE EXCHANGE OFFER IS:
 
                       U.S. TRUST COMPANY OF TEXAS, N.A.
 

                                                          
           By mail:                        By hand:                   By overnight mail:

 
                             For information call:
                              Confirm:
                              Facsimile:
 
     DELIVERY OF THIS LETTER OF TRANSMITTAL TO AN ADDRESS OTHER THAN AS SET
FORTH ABOVE OR TRANSMISSION OF THIS LETTER OF TRANSMITTAL VIA FACSIMILE TO A
NUMBER OTHER THAN AS SET FORTH ABOVE DOES NOT CONSTITUTE A VALID DELIVERY. THE
INSTRUCTIONS CONTAINED HEREIN SHOULD BE READ CAREFULLY BEFORE THIS LETTER OF
TRANSMITTAL IS COMPLETED.
 
     The undersigned acknowledges that he or she has received the Prospectus,
dated October   , 1997 (the "Prospectus"), of Dailey International Inc. (the
"Company") and this Letter of Transmittal (the "Letter of Transmittal"), which
together constitute the Company's offer (the "Exchange Offer") to exchange up to
$115,000,000 aggregate principal amount of the Company's 9 3/4% Series B Senior
Notes due 2007 (the "Exchange Notes") for a like principal amount of its
outstanding 9 3/4% Series A Senior Notes due 2007 (the "Outstanding Notes" and,
together with the Exchange Notes, the "Notes"). The Exchange Notes will be
unsecured obligations of the Company and are identical in all respects to the
Outstanding Notes, except (i) the Exchange Notes have been registered pursuant
to the Securities Act of 1933, as amended (the "Securities Act") and, therefore,
will not bear legends restricting their transfer, (ii) the holders of the
Exchange Notes will not be entitled to certain rights under the Registration
Rights Agreement dated as of August 19, 1997 among the Company, the Subsidiary
Guarantors (as defined in the Prospectus) and the Initial Purchaser (as defined
in the Prospectus) of the Outstanding Notes, and (iii) the Exchange Notes will
not contain certain provisions providing for an increase in the interest rate
paid thereon. The Outstanding Notes have been, and the Exchange Notes will be,
issued under an Indenture dated as of August 19, 1997
   2
 
among the Company, the Subsidiary Guarantors (as defined in the Prospectus) and
U.S. Trust Company of Texas, N.A., as trustee. The term "Expiration Date" shall
mean 5:00 p.m. New York City time, on November   , 1997, unless the Exchange
Offer is extended as provided in the Prospectus, in which case the term
"Expiration Date" shall mean the latest date and time to which the Exchange
Offer is extended. Capitalized terms used but not defined herein shall have the
same meaning given them in the Prospectus.
 
     The Letter of Transmittal is to be completed by holders of Outstanding
Notes either (i) if the Outstanding Notes are forwarded herewith or (ii) if
tender of Outstanding Notes is to be made by book-entry transfer to an account
maintained by U.S. Trust Company of Texas, N.A. (the "Exchange Agent") at The
Depository Trust Company ("DTC") pursuant to the procedures set forth in "The
Exchange Offer--Procedures for Tendering" in the Prospectus.
 
     Holders of Outstanding Notes whose certificates (the "Certificates") for
such Outstanding Notes are not immediately available or who cannot deliver their
Certificates and all other required documents to the Exchange Agent prior to
5:00 p.m., New York City time, on the Expiration Date or who cannot complete the
procedures for book-entry transfer prior to the Expiration Date must tender
their Outstanding Notes according to the guaranteed delivery procedures set
forth in "The Exchange Offer--Guaranteed Delivery Procedures" in the Prospectus.
See Instruction 1.
 
     The term "Holder" with respect to the Exchange Offer means any person in
whose name Outstanding Notes are registered on the books of the Company or any
other person who has obtained a properly completed bond power from the
registered holder. The undersigned has completed, executed and delivered this
Letter of Transmittal to indicate the action the undersigned desires to take
with respect to the Exchange Offer. Holders who wish to tender their Outstanding
Notes must complete this Letter of Transmittal in its entirety.
   3
 
            PLEASE READ THIS ENTIRE LETTER OF TRANSMITTAL CAREFULLY
                  BEFORE COMPLETING THIS LETTER OF TRANSMITTAL
 
                    ALL TENDERING HOLDERS COMPLETE THIS BOX
 

                                                                                  
- -----------------------------------------------------------------------------------------------------------------
                                    DESCRIPTION OF OUTSTANDING NOTES TENDERED
- -----------------------------------------------------------------------------------------------------------------
                                                          OUTSTANDING          PRINCIPAL           NUMBER OF
                                                        NOTES TENDERED         AMOUNT OF      BENEFICIAL HOLDERS
  NAME AND ADDRESS OF REGISTERED                            (ATTACH           OUTSTANDING          FOR WHOM
               HOLDER                  CERTIFICATE      ADDITIONAL LIST     NOTES (IF LESS        OUTSTANDING
     (PLEASE FILL IN IF BLANK)          NUMBERS*         IF NECESSARY)        THAN ALL)**       NOTES ARE HELD
- -----------------------------------------------------------------------------------------------------------------
                                                                                   $
- -----------------------------------------------------------------------------------------------------------------
                                                                                   $
- -----------------------------------------------------------------------------------------------------------------
                                                                                   $
- -----------------------------------------------------------------------------------------------------------------
      Total Amount Tendered:                                                       $
- -----------------------------------------------------------------------------------------------------------------
  * Need not be completed by book-entry holders.
 ** Outstanding Notes may be tendered in integral multiples of $1,000. All Outstanding Notes held shall be deemed
    tendered unless a lesser number is specified in this column.
- -----------------------------------------------------------------------------------------------------------------

 
           (BOXES BELOW TO BE CHECKED BY ELIGIBLE INSTITUTIONS ONLY)
 
[ ] CHECK HERE IF TENDERED OUTSTANDING NOTES ARE BEING DELIVERED BY
     BOOK-ENTRY TRANSFER MADE TO THE ACCOUNT MAINTAINED BY THE EXCHANGE AGENT
    WITH DTC AND COMPLETE THE FOLLOWING (ONLY PARTICIPANTS IN DTC MAY DELIVER
    NOTES BY BOOK-ENTRY TRANSFER (SEE INSTRUCTION 1)):
 
     Name of Tendering Institution:
 
  ------------------------------------------------------------------------------
 
     DTC Account Number:
     ---------------------------------------------------------------------------
 
     Transaction Code Number:
     ---------------------------------------------------------------------------
 
[ ] CHECK HERE AND ENCLOSE A PHOTOCOPY OF THE NOTICE OF GUARANTEED
     DELIVERY IF TENDERED OUTSTANDING NOTES ARE BEING DELIVERED PURSUANT TO A
    NOTICE OF GUARANTEED DELIVERY PREVIOUSLY SENT TO THE EXCHANGE AGENT AND
    COMPLETE THE FOLLOWING (SEE INSTRUCTION 5):
 
     Name of Registered Holder(s):
 
  ------------------------------------------------------------------------------
 
     Window Ticket Number (if any):
 
    ----------------------------------------------------------------------------
 
     Date of Execution of Notice of Guaranteed Delivery:
     -------------------------------------------------------
 
     Name of Institution which executed the notice of Guaranteed Delivery:
     ------------------------------------
 
     If Guaranteed Delivery is to be made by Book-Entry Transfer:
     ---------------------------------------------
 
     Name of Tendering Institution:
 
  ------------------------------------------------------------------------------
 
     DTC Account Number:
     ---------------------------------------------------------------------------
 
     Transaction Code Number:
     ---------------------------------------------------------------------------
   4
 
[ ]  CHECK HERE IF OUTSTANDING NOTES TENDERED BY BOOK-ENTRY TRANSFER
     BUT NOT EXCHANGED ARE TO BE RETURNED BY CREDITING THE DTC ACCOUNT NUMBER
     SET FORTH ABOVE.
 
[ ]  CHECK HERE IF YOU ARE A BROKER-DEALER WHO ACQUIRED THE OUTSTANDING
     NOTES FOR ITS OWN ACCOUNT AS A RESULT OF MARKET-MAKING OR OTHER TRADING
     ACTIVITIES (A "PARTICIPATING BROKER-DEALER") AND WISH TO RECEIVE 10
     ADDITIONAL COPIES OF THE PROSPECTUS AND 10 COPIES OF ANY AMENDMENTS OR
     SUPPLEMENTS THERETO.
 
     Name:
     ---------------------------------------------------------------------------
 
     Address:
     ---------------------------------------------------------------------------
 
     Area Code and Telephone Number:
     -------------------------------------------------------------------------
   5
 
Ladies and Gentlemen:
 
     The undersigned hereby tenders to the Company the above described aggregate
principal amount of Outstanding Notes in exchange for a like aggregate principal
amount of Exchange Notes.
 
     Subject to and effective upon the acceptance for exchange of all or any
portion of the Outstanding Notes tendered herewith in accordance with the terms
and conditions of the Exchange Offer (including, if the Exchange Offer is
extended or amended, the terms and conditions of any such extension or
amendment), the undersigned hereby sells, assigns and transfers to or, upon the
order of the Company, all right, title and interest in and to such Outstanding
Notes as are being tendered herewith. The undersigned hereby irrevocably
constitutes and appoints the Exchange Agent as its agent and attorney-in-fact
(with full knowledge that the Exchange Agent is also acting as agent of the
Company in connection with the Exchange Offer) with respect to the tendered
Outstanding Notes, with full power of substitution (such power of attorney being
deemed to be an irrevocable power coupled with an interest), subject only to the
right of withdrawal described in the Prospectus, to (i) deliver Certificates for
Outstanding Notes together with all accompanying evidence of transfer and
authenticity to, or upon the order of the Company, upon receipt by the Exchange
Agent, as the undersigned's agent, of the Exchange Notes to be issued in
exchange for such Outstanding Notes, (ii) present Certificates for such
Outstanding Notes for transfer, and to transfer the Outstanding Notes on the
books of the Company, and (iii) receive for the account of the Company all
benefits and otherwise exercise all rights of beneficial ownership of such
Outstanding Notes, all in accordance with the terms and conditions of the
Exchange Offer.
 
     THE UNDERSIGNED HEREBY REPRESENTS AND WARRANTS THAT THE UNDERSIGNED HAS
FULL POWER AND AUTHORITY TO TENDER, EXCHANGE, SELL, ASSIGN AND TRANSFER THE
OUTSTANDING NOTES TENDERED HEREBY AND THAT, WHEN THE SAME ARE ACCEPTED FOR
EXCHANGE, THE COMPANY WILL ACQUIRE GOOD, MARKETABLE AND UNENCUMBERED TITLE
THERETO, FREE AND CLEAR OF ALL LIENS, RESTRICTIONS, CHARGES AND ENCUMBRANCES,
AND THAT THE OUTSTANDING NOTES TENDERED HEREBY ARE NOT SUBJECT TO ANY ADVERSE
CLAIMS OR PROXIES. THE UNDERSIGNED WILL, UPON REQUEST, EXECUTE AND DELIVER ANY
ADDITIONAL DOCUMENTS DEEMED BY THE COMPANY OR THE EXCHANGE AGENT TO BE NECESSARY
OR DESIRABLE TO COMPLETE THE EXCHANGE, ASSIGNMENT AND TRANSFER OF THE
OUTSTANDING NOTES TENDERED HEREBY. THE UNDERSIGNED HAS READ AND AGREES TO ALL OF
THE TERMS OF THE EXCHANGE OFFER.
 
     The name(s) and address(es) of the registered holder(s) of the Outstanding
Notes tendered hereby should be printed above, if they are not already set forth
above, as they appear on the Certificates representing such Outstanding Notes.
The Certificate number(s) and the Outstanding Notes that the undersigned wishes
to tender should be indicated in the appropriate boxes above.
 
     If any tendered Outstanding Notes are not exchanged pursuant to the
Exchange Offer for any reason, or if Certificates are submitted for more
Outstanding Notes than are tendered or accepted for exchange, Certificates for
such nonexchanged or nontendered Outstanding Notes will be returned (or, in the
case of Outstanding Notes tendered by book-entry transfer, such Outstanding
Notes will be credited to an account maintained at DTC) without expense to the
tendering holder, as soon as practicable following the withdrawal or rejection
of tender or the expiration or termination of the Exchange Offer.
 
     The undersigned understands that tender of Outstanding Notes pursuant to
any one of the procedures described in "The Exchange Offer -- Procedures for
Tendering and -- Guaranteed Delivery Procedures" in the Prospectus and in this
Letter of Transmittal, and the Company's acceptance for exchange of such
tendered Outstanding Notes, will constitute a binding agreement between the
undersigned and the Company upon the terms and subject to the conditions of the
Exchange Offer. The undersigned recognizes that, under certain circumstances set
forth in the Prospectus, the Company may not be required to accept for exchange
any of the Outstanding Notes tendered hereby.
   6
 
     Unless otherwise indicated herein in the box entitled "Special Registration
Instructions" below, the undersigned hereby directs that the Exchange Notes be
issued in the name(s) of the undersigned or, in the case of book-entry transfer
of Outstanding Notes, that such Exchange Notes be credited to the account
indicated above maintained at DTC. If applicable, substitute Certificates
representing Outstanding Notes not exchanged or not accepted for exchange will
be issued to the undersigned or, in the case of a book-entry transfer of
Outstanding Notes, will be credited to the account indicated above maintained at
DTC. Similarly, unless otherwise indicated under "Special Delivery
Instructions," please deliver Exchange Notes to the undersigned at the address
shown below the undersigned's signature.
 
     BY TENDERING OUTSTANDING NOTES AND EXECUTING THIS LETTER OF TRANSMITTAL,
THE UNDERSIGNED HEREBY REPRESENTS AND AGREES THAT (I) THE UNDERSIGNED IS NOT AN
"AFFILIATE" OF THE COMPANY, (II) ANY EXCHANGE NOTES TO BE RECEIVED BY THE
UNDERSIGNED ARE BEING ACQUIRED IN THE ORDINARY COURSE OF ITS BUSINESS, (III) THE
UNDERSIGNED HAS NO ARRANGEMENT OR UNDERSTANDING WITH ANY PERSON TO PARTICIPATE
IN A DISTRIBUTION (WITHIN THE MEANING OF THE SECURITIES ACT) OF EXCHANGE NOTES
TO BE RECEIVED IN THE EXCHANGE OFFER, AND (IV) IF THE UNDERSIGNED IS NOT A
BROKER-DEALER, THE UNDERSIGNED IS NOT ENGAGED IN, AND DOES NOT INTEND TO ENGAGE
IN, A DISTRIBUTION (WITHIN THE MEANING OF THE SECURITIES ACT) OF SUCH EXCHANGE
NOTES BY TENDERING OUTSTANDING NOTES PURSUANT TO THE EXCHANGE OFFER AND
EXECUTING THIS LETTER OF TRANSMITTAL. A HOLDER OF OUTSTANDING NOTES WHICH IS A
BROKER-DEALER REPRESENTS AND AGREES, CONSISTENT WITH CERTAIN INTERPRETIVE
LETTERS ISSUED BY THE STAFF OF THE DIVISION OF CORPORATION FINANCE OF THE
SECURITIES AND EXCHANGE COMMISSION TO THIRD PARTIES, THAT (A) SUCH OUTSTANDING
NOTES HELD BY THE BROKER-DEALER ARE HELD ONLY AS A NOMINEE OR (B) SUCH
OUTSTANDING NOTES WERE ACQUIRED BY SUCH BROKER-DEALER FOR ITS OWN ACCOUNT AS A
RESULT OF MARKET-MAKING ACTIVITIES OR OTHER TRADING ACTIVITIES AND IT WILL
DELIVER A PROSPECTUS (AS AMENDED OR SUPPLEMENTED FROM TIME TO TIME) MEETING THE
REQUIREMENTS OF THE SECURITIES ACT IN CONNECTION WITH ANY RESALE OF SUCH
EXCHANGE NOTES (PROVIDED THAT, BY SO ACKNOWLEDGING AND BY DELIVERING A
PROSPECTUS, SUCH BROKER-DEALER WILL NOT BE DEEMED TO ADMIT THAT IT IS AN
"UNDERWRITER" WITHIN THE MEANING OF THE SECURITIES ACT).
 
     THE COMPANY HAS AGREED THAT, SUBJECT TO THE PROVISIONS OF THE REGISTRATION
RIGHTS AGREEMENT, THE PROSPECTUS, AS IT MAY BE AMENDED OR SUPPLEMENTED FROM TIME
TO TIME, MAY BE USED BY A PARTICIPATING BROKER-DEALER (AS DEFINED BELOW) IN
CONNECTION WITH RESALES OF EXCHANGE NOTES RECEIVED IN EXCHANGE FOR OUTSTANDING
NOTES, WHERE SUCH OUTSTANDING NOTES WERE ACQUIRED BY SUCH PARTICIPATING
BROKER-DEALER FOR ITS OWN ACCOUNT AS A RESULT OF MARKET-MAKING ACTIVITIES OR
OTHER TRADING ACTIVITIES, FOR A PERIOD ENDING      DAYS AFTER THE EXPIRATION
DATE (SUBJECT TO EXTENSION UNDER CERTAIN LIMITED CIRCUMSTANCES DESCRIBED IN THE
PROSPECTUS) OR, IF EARLIER, WHEN ALL SUCH EXCHANGE NOTES HAVE BEEN DISPOSED OF
BY SUCH PARTICIPATING BROKER-DEALER. IN THAT REGARD, EACH BROKER-DEALER WHO
ACQUIRED OUTSTANDING NOTES FOR ITS OWN ACCOUNT AS A RESULT OF MARKET-MAKING OR
OTHER TRADING ACTIVITIES (A "PARTICIPATING BROKER-DEALER"), BY TENDERING SUCH
OUTSTANDING NOTES AND EXECUTING THIS LETTER OF TRANSMITTAL, AGREES THAT, UPON
RECEIPT OF NOTICE FROM THE COMPANY OF THE OCCURRENCE OF ANY EVENT OR THE
DISCOVERY OF ANY FACT WHICH MAKES ANY STATEMENT CONTAINED OR INCORPORATED BY
REFERENCE IN THE PROSPECTUS UNTRUE IN ANY MATERIAL RESPECT OR WHICH CAUSES THE
PROSPECTUS TO OMIT TO STATE A MATERIAL FACT NECESSARY IN ORDER TO MAKE THE
STATEMENTS CONTAINED OR INCORPORATED BY REFERENCE THEREIN, IN LIGHT OF THE
CIRCUM-
   7
 
STANCES UNDER WHICH THEY WERE MADE, NOT MISLEADING OR OF THE OCCURRENCE OF
CERTAIN OTHER EVENTS SPECIFIED IN THE REGISTRATION RIGHTS AGREEMENT, SUCH
PARTICIPATING BROKER-DEALER WILL SUSPEND THE SALE OF EXCHANGE NOTES PURSUANT TO
THE PROSPECTUS UNTIL THE COMPANY HAS AMENDED OR SUPPLEMENTED THE PROSPECTUS TO
CORRECT SUCH MISSTATEMENT OR OMISSION AND HAS FURNISHED COPIES OF THE AMENDED OR
SUPPLEMENTED PROSPECTUS TO THE PARTICIPATING BROKER-DEALER OR THE COMPANY HAS
GIVEN NOTICE THAT THE SALE OF THE EXCHANGE NOTES MAY BE RESUMED, AS THE CASE MAY
BE. IF THE COMPANY GIVES SUCH NOTICE TO SUSPEND THE SALE OF THE EXCHANGE NOTES,
IT SHALL EXTEND THE      DAY PERIOD REFERRED TO ABOVE DURING WHICH PARTICIPATING
BROKER-DEALERS ARE ENTITLED TO USE THE PROSPECTUS IN CONNECTION WITH THE RESALE
OF EXCHANGE NOTES BY THE NUMBER OF DAYS DURING THE PERIOD FROM AND INCLUDING THE
DATE OF THE GIVING OF SUCH NOTICE TO AND INCLUDING THE DATE WHEN PARTICIPATING
BROKER-DEALERS SHALL HAVE RECEIVED COPIES OF THE SUPPLEMENTED OR AMENDED
PROSPECTUS NECESSARY TO PERMIT RESALES OF THE EXCHANGE NOTES OR TO AND INCLUDING
THE DATE ON WHICH THE COMPANY GIVES NOTICE THAT THE SALE OF EXCHANGE NOTES MAY
BE RESUMED, AS THE CASE MAY BE.
 
     Holders of Outstanding Notes whose Outstanding Notes are accepted for
exchange will not receive accrued interest on such Outstanding Notes for any
period from and after the exchange of such Outstanding Notes for the Exchange
Notes.
 
     Except as stated in the Prospectus, this tender is irrevocable.
   8
 
                              HOLDER(S) SIGN HERE
                         (SEE INSTRUCTIONS 2, 5 AND 6)
             (PLEASE COMPLETE SUBSTITUTE FORM W-9 ON PAGE [     ])
      (NOTE: SIGNATURE(S) MUST BE GUARANTEED IF REQUIRED BY INSTRUCTION 2)
 
     Must be signed by registered holder(s) exactly as name(s) appear(s) on
Certificate(s) for the Outstanding Notes hereby tendered or on a security
position listing, or by any person(s) authorized to become the registered
holder(s) by endorsements and documents transmitted herewith (including such
opinions of counsel, certifications and other information as may be required by
the Company for the Outstanding Notes to comply with the restrictions on
transfer applicable to the Outstanding Notes). If signature is by an
attorney-in-fact, trustee, officer of a corporation or another acting in a
fiduciary capacity or representative capacity, please set forth the signer's
full title. See Instruction 5.
 
- --------------------------------------------------------------------------------
                          (Signature(s) of Holder(s))
 
Dated  ______________ , 1997
 
Name(s):
- --------------------------------------------------------------------------------
                                     (Please Print)
 
Capacity (full title):
- --------------------------------------------------------------------------------
 
Address:
- --------------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
                                  (Include Zip Code)
 
Area Code and Telephone Number:
- --------------------------------------------------------------------
 
Tax Identification or Social Security Number:
- ----------------------------------------------------------
 
                           GUARANTEE OF SIGNATURE(S)
                           (See Instructions 2 and 5)
 
- --------------------------------------------------------------------------------
                             (Authorized Signature)
 
Date:  ______________ , 1997
 
Name of Firm:
- --------------------------------------------------------------------------------
 
Capacity (full title):
- --------------------------------------------------------------------------------
                                          (Please Print)
 
Address:
- --------------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
                                  (Include Zip Code)
 
Area Code and Telephone Number:
- --------------------------------------------------------------------
   9
 
                       SPECIAL REGISTRATION INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)
 
To be completed ONLY if the Exchange Notes are to be issued in the name of
someone other than the registered holder of the Outstanding Notes whose name(s)
appear(s) above.
 
Issue
 
[ ] Exchange Notes and/or
 
[ ] Outstanding Notes not tendered
 
to:
 
Name(s):
 
           --------------------------------------------------------
 
Address:
 
         --------------------------------------------------------
 
         --------------------------------------------------------
 
         --------------------------------------------------------
                                   (Include Zip Code)
 
Area Code and
Telephone Number:
 
                     -------------------------------------------------------
 
Tax Identification or
Social Security Number(s):
 
                         -------------------------------------------------------
 
                         SPECIAL DELIVERY INSTRUCTIONS
                         (SEE INSTRUCTIONS 1, 5 AND 6)
 
To be completed ONLY if Exchange Notes are to be sent to someone other than the
registered holder of the Outstanding Notes whose name(s) appear(s) above, or to
such registered holder(s) at an address other than that shown above.
 
Mail
 
[ ] Exchange Notes and/or
 
[ ] Outstanding Notes not tendered
 
to:
 
Name(s):
 
           --------------------------------------------------------
 
Address:
 
         --------------------------------------------------------
 
         --------------------------------------------------------
 
         --------------------------------------------------------
                                   (Include Zip Code)
 
Area Code and
Telephone Number:
 
                     -------------------------------------------------------
 
Tax Identification or
Social Security Number(s):
 
                         -------------------------------------------------------
   10
 
                                  INSTRUCTIONS
 
         FORMING PART OF THE TERMS AND CONDITIONS OF THE EXCHANGE OFFER
 
     1. DELIVERY OF LETTER OF TRANSMITTAL AND CERTIFICATES, GUARANTEED DELIVERY
PROCEDURES. This Letter of Transmittal is to be completed either if (a)
Certificates are forwarded herewith or (b) tenders are to be made pursuant to
the procedures for tender by book-entry transfer set forth in "The Exchange
Offer--Procedures for Tendering" in the Prospectus. Certificates for Outstanding
Notes being tendered, or timely confirmation of a book-entry transfer of such
Outstanding Notes into the Exchange Agent's account at DTC, as well as this
Letter of Transmittal (or a facsimile thereof), properly completed and duly
executed, with any required signature guarantees, and any other documents
required by this Letter of Transmittal, must be received by the Exchange Agent
at its address set forth herein prior to 5:00 p.m., New York City time, on the
Expiration Date. Outstanding Notes may be tendered in integral multiples of
$1,000.
 
     Holders who wish to tender their Outstanding Notes and (i) whose
Outstanding Notes are not immediately available or (ii) who cannot deliver their
Outstanding Notes, this Letter of Transmittal or any other required documents to
the Exchange Agent prior to 5:00 p.m., New York City time, on the Expiration
Date or (iii) who cannot complete the procedures for delivery by book-entry
transfer prior to the Expiration Date may tender their Outstanding Notes by
properly completing and duly executing a Notice of Guaranteed Delivery pursuant
to the guaranteed delivery procedures set forth in "The Exchange
Offer--Guaranteed Delivery Procedures" in the Prospectus. Pursuant to such
procedures: (i) such tender must be made by or through an Eligible Institution
(as defined below); (ii) a properly completed and duly executed Notice of
Guaranteed Delivery, substantially in the form made available by the Company,
must be received by the Exchange Agent prior to 5:00 p.m., New York City time,
on the Expiration Date; and (iii) the Certificates (or a confirmation of
book-entry transfer of such Outstanding Notes into the Exchange Agent's account
at the Book-Entry Transfer Facility (as defined in the Prospectus)) representing
all tendered Outstanding Notes, in proper form for transfer, together with a
Letter of Transmittal (or facsimile thereof), properly completed and duly
executed, with any required signature guarantees and any other documents
required by this Letter of Transmittal, must be received by the Exchange Agent
within five New York Stock Exchange, Inc. trading days after the Expiration
Date, all as provided in "The Exchange Offer--Guaranteed Delivery Procedures" in
the Prospectus.
 
     The Notice of Guaranteed Delivery may be delivered by hand or transmitted
by facsimile or mail to the Exchange Agent and must include a guarantee by an
Eligible Institution in the form set forth in such notice. As used herein and in
the Prospectus, "Eligible Institution" means a firm or other entity identified
as an "eligible guarantor institution" within the meaning of Rule 17Ad-15 under
the Exchange Act, including (as such terms are defined therein) (i) a bank; (ii)
a broker, dealer, municipal securities broker or dealer or government securities
broker or dealer; (iii) a credit union; (iv) a national securities exchange,
registered securities association or clearing agency; or (v) a savings
association that is a participant in a securities transfer association.
 
     THE METHOD OF DELIVERY OF CERTIFICATES, THIS LETTER OF TRANSMITTAL AND ALL
OTHER REQUIRED DOCUMENTS IS AT THE OPTION AND SOLE RISK OF THE TENDERING HOLDER
AND THE DELIVERY WILL BE DEEMED MADE ONLY WHEN ACTUALLY RECEIVED BY THE EXCHANGE
AGENT. IF DELIVERY IS BY MAIL, REGISTERED MAIL WITH RETURN RECEIPT REQUESTED,
PROPERLY INSURED, OR OVERNIGHT DELIVERY SERVICE IS RECOMMENDED. IN ALL CASES,
SUFFICIENT TIME SHOULD BE ALLOWED TO ENSURE TIMELY DELIVERY.
 
     The Company will not accept any alternative, conditional or contingent
tenders. Each tendering holder, by execution of a Letter of Transmittal (or
facsimile thereof), waives any right to receive any notice of the acceptance of
such tender.
 
     2. GUARANTEE OF SIGNATURES No signature guarantee on this Letter of
Transmittal is required if:
 
          (i) this Letter of Transmittal is signed by the registered holder
     (which term, for purposes of this document, shall include any participant
     in DTC whose name appears on a security position listing as the owner of
     the Outstanding Notes) of Outstanding Notes tendered herewith, unless such
     holder has completed either the box entitled "Special Registration
     Instructions" or the box entitled "Special Delivery Instructions" above, or
 
          (ii) such Outstanding Notes are tendered for the account of a firm
     that is an Eligible Institution.
   11
 
     In all other cases, an Eligible Institution must guarantee the signature(s)
on this Letter of Transmittal. See Instruction 5.
 
     3. INADEQUATE SPACE. If the space provided in the box captioned
"Description of Outstanding Notes Tendered" is inadequate, the Certificate
number(s) and/or the principal amount of Outstanding Notes and any other
required information should be listed on a separate signed schedule which is
attached to this Letter of Transmittal.
 
     4. PARTIAL TENDERS AND WITHDRAWAL RIGHTS. Tenders of Outstanding Notes will
be accepted only in integral multiples of $1,000. If less than all the
Outstanding Notes evidenced by any Certificate submitted are to be tendered,
fill in the principal amount of Outstanding Notes which are to be tendered in
the box entitled "Principal Amount of Outstanding Notes Tendered (if less than
all)." In such case, the holder will receive new Certificate(s) for the
remainder of the Outstanding Notes, promptly after the Expiration Date. All
Outstanding Notes represented by Certificates delivered to the Exchange Agent
will be deemed to have been tendered unless otherwise indicated.
 
     Except as otherwise provided herein, tenders of Outstanding Notes may be
withdrawn at any time prior to 5:00 p.m., New York City time, on the Expiration
Date. In order for a withdrawal to be effective on or prior to that time, a
written or facsimile transmission of such notice of withdrawal must be timely
received by the Exchange Agent at one of its addresses set forth above or in the
Prospectus prior to 5:00 p.m., New York City time, on the Expiration Date. Any
such notice of withdrawal must (i) specify the name of the person having
deposited the Outstanding Notes to be withdrawn (the "Depositor"), (ii) identify
the Outstanding Notes to be withdrawn (including the certificate number(s) and
principal amount of such Outstanding Notes, or, in the case of Outstanding Notes
transferred by book-entry transfer, the name and number of the account at the
Book-Entry Transfer Facility to be credited), (iii) be signed by the Holder in
the same manner as the original signature on the Letter of Transmittal by which
such Outstanding Notes were tendered (including any required signature
guarantees) or be accompanied by documents of transfer sufficient to have the
Trustee with respect to the Outstanding Notes register the transfer of such
Outstanding Notes into the name of the person withdrawing the tender, (iv)
specify the name in which any such Outstanding Notes are to be registered, if
different from that of the Depositor and (v) if applicable because the
Outstanding Notes have been tendered pursuant to book-entry procedures, specify
the name and number of the participant's account at DTC to be credited, if
different from that of the depositor. All questions as to the validity, form and
eligibility (including time of receipt) of such notices will be determined by
the Company, whose determination shall be final and binding on all parties. Any
Outstanding Notes so withdrawn will be deemed not to have been validly tendered
for purposes of the Exchange Offer and no Exchange Notes will be issued with
respect thereto unless the Outstanding Notes so withdrawn are validly tendered.
Properly withdrawn Outstanding Notes may be retendered by following one of the
procedures described in "The Exchange Offer--Procedures for Tendering" in the
Prospectus at any time prior to the Expiration Date.
 
     All questions as to the validity, form and eligibility (including time of
receipt) of such withdrawal notices will be determined by the Company, in its
sole discretion, whose determination shall be final and binding on all parties.
The Company, any affiliates or assigns of the Company, the Exchange Agent or any
other person shall not be under any duty to give any notification of any
irregularities in any notice of withdrawal or incur any liability for failure to
give any such notification. Any Outstanding Notes which have been tendered but
which are withdrawn will be returned to the holder thereof without cost to such
holder as soon as practicable after withdrawal, rejection of tender or
termination of the Exchange Offer.
 
     5. SIGNATURES ON LETTER OF TRANSMITTAL, ASSIGNMENTS AND ENDORSEMENTS. If
this Letter of Transmittal is signed by the registered holder(s) of the
Outstanding Notes tendered hereby, the signature(s) must correspond exactly with
the name(s) as written on the face of the Certificate(s) without alteration,
enlargement or any change whatsoever.
 
     If any of the Outstanding Notes tendered hereby are owned of record by two
or more joint owners, all such owners must sign this Letter of Transmittal.
 
     If any tendered Outstanding Notes are registered in different name(s) on
several Certificates, it will be necessary to complete, sign and submit as many
separate Letters of Transmittal (or facsimiles thereof) as there are different
registrations of Certificates.
 
     If this Letter of Transmittal or any Certificates or bond powers are signed
by trustees, executors, administrators, guardians, attorneys-in-fact, officers
of corporations or others acting in a fiduciary or representative capacity, such
person
   12
 
should so indicate when signing and, unless waived by the Company, evidence
satisfactory to the Company, in its sole discretion, of their authority to so
act must be submitted with this Letter of Transmittal.
 
     When this Letter of Transmittal is signed by the registered owner(s) of the
Outstanding Notes listed and transmitted hereby, no endorsement(s) of
Certificate(s) or separate bond power(s) are required unless Exchange Notes are
to be issued in the name of a person other than the registered holder(s).
Signature(s) on such Certificate(s) or bond power(s) must be guaranteed by an
Eligible Institution.
 
     If this Letter of Transmittal is signed by a person other than the
registered owner(s) of the Outstanding Notes listed, the Certificates must be
endorsed or accompanied by appropriate bond powers, signed by the registered
owner(s) exactly as the name or names of the registered owner(s) appear(s) on
the Certificates[, and also must be accompanied by such opinions of counsel,
certifications and other information as the Company or the Trustee for the
Outstanding Notes may require in accordance with the restrictions on transfer
applicable to the Outstanding Notes]. Signatures on such Certificates or bond
powers must be guaranteed by an Eligible Institution.
 
     If tendered Outstanding Notes are registered in the name of the signer of
the Letter of Transmittal and the Exchange Notes to be issued in exchange
therefor are to be issued (and any untendered Outstanding Notes are to be
reissued) in the name of the registered holder (including any participant in The
Depository Trust Company (also referred to as a book-entry facility) whose name
appears on a security listing as the owner of Outstanding Notes), the signature
of such signer need not be guaranteed. In any other case, the tendered
Outstanding Notes must be endorsed or accompanied by written instruments of
transfer in form satisfactory to the Company and duly executed by the registered
holder and the signature on the endorsement or instrument of transfer must be
guaranteed by a member firm of a registered national securities exchange or of
the National Association of Securities Dealers, Inc., a commercial bank or trust
company having an office or correspondent in the United States or an "eligible
guarantor institution" as defined by Rule 17Ad-15 under the Securities Exchange
Act of 1934, as amended.
 
     6. SPECIAL REGISTRATION AND DELIVERY INSTRUCTIONS. If Exchange Notes are to
be issued in the name of a person other than the signer of this Letter of
Transmittal, or if Exchange Notes are to be sent to someone other than the
signer of this Letter of Transmittal or to an address other than that shown
above, the appropriate boxes on this Letter of Transmittal should be completed.
Certificates for Outstanding Notes not exchanged will be returned by mail or, if
tendered by book-entry transfer, by crediting the account indicated above
maintained at DTC. See Instruction 4.
 
     7. IRREGULARITIES. The Company will determine, in its sole discretion, all
questions as to the form of documents, validity, eligibility (including time of
receipt), acceptance and withdrawal of tendered Outstanding Notes, which
determination shall be final and binding on all parties. The Company reserves
the absolute right to reject any and all tenders determined by it not to be in
proper form or the acceptance of which, or exchange for, may, in the view of
counsel to the Company, be unlawful. The Company also reserves the absolute
right, subject to applicable law, to waive any of the conditions of the Exchange
Offer set forth in the Prospectus under "The Exchange Offer -- Conditions" or
defects, irregularities or conditions of tender as to particular Outstanding
Notes, whether or not similar conditions or irregularities are waived in the
case of other holders. The Company's interpretation of the terms and conditions
of the Exchange Offer (including this Letter of Transmittal and the instructions
hereto) will be final and binding on all parties. No tender of Outstanding Notes
will be deemed to have been validly made until all irregularities with respect
to such tender have been waived or cured within such time as the Company shall
determine. Although the Company intends to notify Holders of defects or
irregularities with respect to tenders of Outstanding Notes, neither the
Company, any affiliate or assign of the Company or the Exchange Agent nor any
person shall be under any duty to give notification of any irregularities in
tenders or incur any liability for failure to give such notification. Any
Outstanding Notes received by the Exchange Agent that are not properly tendered
and as to which the defects or irregularities have not been cured or waived will
be returned by the Exchange Agent to the tendering Holders as soon as
practicable following the Expiration Date.
 
     8. QUESTIONS, REQUESTS FOR ASSISTANCE AND ADDITIONAL COPIES. Questions and
requests for assistance may be directed to the Exchange Agent at its address and
telephone number set forth on the front of this Letter of Transmittal.
Additional copies of the Prospectus, the Notice of Guaranteed Delivery and the
Letter of Transmittal may be obtained from the Exchange Agent or from your
broker, dealer, commercial bank, trust company or other nominee.
 
     9. 31% BACKUP WITHHOLDING, SUBSTITUTE FORM W-9. Under the U.S. Federal
income tax law, a Holder whose tendered Outstanding Notes are accepted for
exchange is required to provide the Exchange Agent with such Holder's
   13
 
correct taxpayer identification number ("TIN") on the Substitute Form W-9 below.
If the Exchange Agent is not provided with the correct TIN, the Internal Revenue
Service (the "IRS") may subject the Holder or the payee to a $50 penalty. In
addition, payments to such Holders or other payees with respect to Exchange
Notes exchanged pursuant to the Exchange Offer may be subject to 31% backup
withholding.
 
     The box in Part 3 of Substitute Form W-9 may be checked if the tendering
Holder has not been issued a TIN and has applied for a TIN or intends to apply
for a TIN in the near future. If the box in Part 3 is checked, the Holder or
other payee must also complete the certifications in Part 2 and the Certificate
of Awaiting Taxpayer Identification Number below in order to avoid backup
withholding. Notwithstanding that the box in Part 3 is checked and the
Certificate of Awaiting Taxpayer Identification Number is completed, the
Exchange Agent will withhold 31% of all payments made to the payee 7 days
following receipt by the Exchange Agent of the Certificate of Awaiting Taxpayer
Identification Number and prior to the time a properly certified TIN is provided
to the Exchange Agent.
 
     The Holder is required to give the Exchange Agent the TIN (e.g., social
security number or employer identification number) of the registered owner of
Outstanding Notes or of the last transferee appearing on the transfers attached
to, or endorsed on, the Outstanding Notes. If the Outstanding Notes are
registered in more than one name or are not in the name of the actual owner,
consult the enclosed "Guidelines for Certification of Taxpayer Identification
Number on Substitute Form W-9" for additional guidance on which number to
report.
 
     Certain Holders (including, among others, corporations, financial
institutions and certain foreign persons) may not be subject to these backup
withholding and reporting requirements. Such Holders should nevertheless
complete the Substitute Form W-9 below, and write "exempt" on the face thereof,
to avoid possible erroneous backup withholding. A foreign person may qualify as
an exempt recipient by submitting a properly completed IRS Form W-8, signed
under penalties of perjury, attesting to that Holder's exempt status. Please
consult the enclosed "Guidelines for Certification of Taxpayer Identification
Number on Substitute Form W-9" for additional guidance on which Holders are
exempt from backup withholding.
 
     Backup withholding is not an additional U.S. Federal income tax. Rather,
the U.S. Federal Income tax liability of a person subject to backup withholding
will be reduced by the amount of tax withheld. If withholding results in an
overpayment of taxes, a refund may be applied for.
 
     10. LOST, DESTROYED OR STOLEN CERTIFICATES. If any Certificate(s)
representing Outstanding Notes have been lost, destroyed or stolen, the holder
should promptly notify the Exchange Agent. The holder will then be instructed by
the Exchange Agent as to the steps that must be taken in order to replace the
Certificate(s). This Letter of Transmittal and related documents cannot be
processed until the procedures for replacing lost, destroyed or stolen
Certificate(s) have been followed.
 
     11. SECURITY TRANSFER TAXES. Holders who tender their Outstanding Notes for
exchange will not be obligated to pay any transfer taxes in connection
therewith. If, however, certificates representing the Exchange Notes or the
Outstanding Notes for the principal amounts not tendered or accepted for
exchange are to be delivered to, or are to be issued in the name of, any person
other than the person signing the Letter of Transmittal, or if a transfer tax is
imposed for any reason other than the exchange of Outstanding Notes in
connection with the Exchange Offer, then the amount of any such transfer tax
(whether imposed on the registered holder or any other person) will be payable
by the tendering holder. If satisfactory evidence of payment of such taxes or
exemption therefrom is not submitted with this Letter of Transmittal, the amount
of such transfer taxes will be billed directly to such tendering holder.
 
     IMPORTANT: THIS LETTER OF TRANSMITTAL (OR FACSIMILE THEREOF) AND ALL OTHER
REQUIRED DOCUMENTS MUST BE RECEIVED BY THE EXCHANGE AGENT PRIOR TO 5:00 P.M.,
NEW YORK CITY TIME, ON THE EXPIRATION DATE.
   14
 

                                                                                   
- ------------------------------------------------------------------------------------------------------------------------------
PAYER'S NAME: U.S. TRUST COMPANY OF TEXAS, N.A.
- ------------------------------------------------------------------------------------------------------------------------------
  SUBSTITUTE                        PART 1 -- PLEASE PROVIDE YOUR TIN IN THE BOX AT             Social Security Number or
                                    RIGHT AND CERTIFY BY SIGNING AND DATING BELOW.           Employer Identification Number
  FORM W-9                                                                                ------------------------------------
  DEPARTMENT OF THE TREASURY
  INTERNAL REVENUE SERVICE
                                   ---------------------------------------------------------------------------------------------
                                    PART 2 -- CERTIFICATIONS -- Under penalties of perjury, I certify that:
  PAYER'S REQUEST FOR
  TAXPAYER IDENTIFICATION           (1) The number shown on this form is my correct Taxpayer Identification Number (or I am
  NUMBER ("TIN")                        waiting for a number to be issued to me) and
                                    (2) I am not subject to backup withholding because: (a) I am exempt from backup withholding,
                                        or (b) I have not been notified by the Internal Revenue Service (the "IRS") that I am
                                        subject to backup withholding as a result of failure to report all interest or
                                        dividends, or (c) the IRS has notified me that I am no longer subject to backup
                                        withholding.
                                    CERTIFICATION INSTRUCTIONS -- You must cross out item (2) above if you have been notified by
                                    the IRS that you are currently subject to backup withholding because of underreporting
                                    interest or dividends on your tax return. However, if after being notified by the IRS that
                                    you are subject to backup withholding, you received another notification from the IRS that
                                    you are no longer subject to backup withholding, do not cross out such item (2).
                                    THE INTERNAL REVENUE SERVICE DOES NOT REQUIRE YOUR CONSENT TO ANY PROVISION OF THIS DOCUMENT
                                    OTHER THAN THE CERTIFICATIONS REQUIRED TO AVOID BACKUP WITHHOLDING.
                                   ---------------------------------------------------------------------------------------------
 
                                                                                                         PART 3
                                    Signature ------------------------------------------            Awaiting TIN [ ]
                                    Date-----------------------------------------------
                                    Name (please print)------------------------------
                                    Address (please print)----------------------------
                                   -----------------------------------------------------
- ------------------------------------------------------------------------------------------------------------------------------

 
NOTE: FAILURE TO COMPLETE AND RETURN THIS FORM MAY RESULT IN BACKUP WITHHOLDING
      OF 31% OF ANY PAYMENTS MADE TO YOU WITH RESPECT TO EXCHANGE NOTES
      EXCHANGED PURSUANT TO THE EXCHANGE OFFER. PLEASE REVIEW THE ENCLOSED
      "GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION NUMBER ON
      SUBSTITUTE FORM W-9" FOR ADDITIONAL DETAILS.
 
          YOU MUST COMPLETE THE FOLLOWING CERTIFICATION IF YOU CHECKED
                   THE BOX IN PART 3 OF SUBSTITUTE FORM W-9.
 
             CERTIFICATE OF AWAITING TAXPAYER IDENTIFICATION NUMBER
 
     I certify under penalties of perjury that a taxpayer identification number
has not been issued to me, and either (1) I have mailed or delivered an
application to receive a taxpayer identification number to the appropriate
Internal Revenue Service Center or Social Security Administration Office or (2)
I intend to mail or deliver an application in the near future. I understand that
if I do not provide a taxpayer identification number within 60 days, 31% of all
reportable payments made to me thereafter will be withheld until I provide a
number. Moreover, I understand that during this 60-day period, 31% of all
reportable payments made to me will be withheld commencing 7 business days after
the payor receives this Certificate of Awaiting Taxpayer Identification Number
and terminating on the date I provide a certified TIN to the payor.
 
Signature
- ------------------------------------------------                            Date
- ------------------------------------
 
Name (please print)
- --------------------------------------------------------------------------------
 
Address (please print)
- --------------------------------------------------------------------------------
   15
 
                         NOTICE OF GUARANTEED DELIVERY
                                 FOR TENDER OF
                     9 3/4% SERIES A SENIOR NOTES DUE 2007
                  (PRINCIPAL SERIES A AMOUNT $1,000 PER NOTE)
                                       OF
 
                           DAILEY INTERNATIONAL INC.
 
     This Notice of Guaranteed Delivery, or one substantially equivalent to this
form, must be used for a holder of the Issuer's (as defined below) 9 3/4% Series
A Senior Notes due 2007 (the "Outstanding Notes") to accept the Exchange Offer
(as defined below) if (i) certificates for such holder's Outstanding Notes are
not immediately available, (ii) such holder cannot deliver its certificates for
Outstanding Notes, the Letter of Transmittal or any other required documents to
U.S. Trust Company of Texas, N.A. (the "Exchange Agent") prior to 5:00 p.m., New
York City time, on the Expiration Date (as defined in the Prospectus referred to
below) or (iii) the procedures for delivery by book-entry transfer cannot be
completed prior to the Expiration Date. This Notice of Guaranteed Delivery may
be delivered by hand, [overnight courier or] mail, or transmitted by facsimile
transmission, to the Exchange Agent. See "The Exchange Offer -- Guaranteed
Delivery Procedures" in the Prospectus.
 
                 THE EXCHANGE AGENT FOR THE EXCHANGE OFFER IS:
 
                       U.S. TRUST COMPANY OF TEXAS, N.A.
 

                                                          
           By mail:                        By hand:                   By overnight mail:

 
                             For information call:
                                    Confirm:
                                   Facsimile:
 
     DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS
SET FORTH ABOVE OR TRANSMISSION OF THIS NOTICE OF GUARANTEED DELIVERY VIA
FACSIMILE TO A NUMBER OTHER THAN AS SET FORTH ABOVE WILL NOT CONSTITUTE A VALID
DELIVERY.
 
Ladies and Gentlemen:
 
     The undersigned hereby tenders to Dailey International Inc., a Delaware
corporation (the "Issuer"), upon the terms and subject to the conditions set
forth in the Prospectus dated October   , 1997 (as the same may be amended or
supplemented from time to time, the "Prospectus"), and the related Letter of
Transmittal (which together constitute the "Exchange Offer"), receipt of which
is hereby acknowledged, the aggregate principal amount of Outstanding Notes set
forth below pursuant to the guaranteed delivery procedures set forth in the
Prospectus under the caption "The Exchange Offer -- Guaranteed Delivery
Procedures." All capitalized terms used herein but not defined shall have the
meanings ascribed to them in the Prospectus.
 
     The undersigned understands and acknowledges that the Exchange Offer will
expire at 5:00 p.m., New York City time, on November   , 1997, unless extended
by the Issuer. The term "Expiration Date" shall mean 5:00 p.m., New York City
time, on November   , 1997, unless the Exchange Offer is extended as
   16
 
provided in the Prospectus, in which case the term "Expiration Date" shall mean
the latest date and time to which the Exchange Offer is extended.
 
                                   SIGNATURE
 
X
- ---------------------------------------------------------------            Date:
- ---------------------
 
X
- ---------------------------------------------------------------            Date:
- ---------------------
      Signature(s) of Registered Holder(s)
             or Authorized Signatory
 
Area Code and Telephone Number:
- --------------------------------------------------------------------
 
Name(s):
- --------------------------------------------------------------------------------
                                     (Please Print)
 
Capacity (full title,
if signing in a fiduciary
or representative capacity):
- ------------------------------------------------------------------------------
 
Address:
- --------------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
 
       -------------------------------------------------------------------------
 
Taxpayer Identification
Number or Social Security No.:
- -------------------------------------------------------------------------
 
Aggregate Principal Amount of
Outstanding Notes Tendered (must
be integral multiples of $1,000): $
- ----------------------------------------------------------------------
 
Certificate Number(s) of
Outstanding Notes (if available):
- -----------------------------------------------------------------------
 
Aggregate Principal Amount
Represented by Certificate(s): $
- ------------------------------------------------------------------------
 
IF TENDERED OUTSTANDING NOTES
WILL BE DELIVERED BY BOOK-ENTRY
TRANSFER, PROVIDE THE DEPOSITORY
TRUST COMPANY ("DTC") ACCOUNT NO.
AND TRANSACTION CODE (if available):
- ---------------------------------------------------------
 
Account No.:
- --------------------------------------------------------------------------------
 
Transaction No.:
- --------------------------------------------------------------------------------
   17
 
                             GUARANTEE OF DELIVERY
                    (NOT TO BE USED FOR SIGNATURE GUARANTEE)
 
     The undersigned, a firm or other entity identified as an "eligible
guarantor institution" within the meaning of Rule 17Ad-15 promulgated under the
Securities Exchange Act of 1934, as amended, guarantees deposit with the
Exchange Agent of a properly completed and executed Letter of Transmittal (or
facsimile thereof), [or an Agent's Message,] as well as the certificate(s)
representing all tendered Outstanding Notes in proper form for transfer, or
confirmation of the book-entry transfer of such Outstanding Notes into the
Exchange Agent's account at DTC as described in the Prospectus under the caption
"The Exchange Offer -- Guaranteed Delivery Procedures" and other documents
required by the Letter of Transmittal, all by 5:00 p.m., New York City time, on
the fifth New York Stock Exchange trading day following the Expiration Date.
 
Name of Eligible Institution:
- --------------------------------------------------------------------------------
                                          Authorized Signature
 

                                                        
Address: -------------------------------------------       Name: --------------------------------------------
          -------------------------------------------      Title: ----------------------------------------------
          -------------------------------------------      Date: ---------------------------------------------

 
Area Code and Telephone No.
- ------------------------
 
     NOTE: DO NOT SEND OUTSTANDING NOTES WITH THIS NOTICE OF GUARANTEED
DELIVERY. ACTUAL SURRENDER OF OUTSTANDING NOTES MUST BE MADE PURSUANT TO, AND BE
ACCOMPANIED BY, A PROPERLY COMPLETED AND DULY EXECUTED LETTER OF TRANSMITTAL AND
ANY OTHER REQUIRED DOCUMENTS.
   18
 
                           DAILEY INTERNATIONAL INC.
 
          OFFER TO EXCHANGE ITS 9 3/4% SERIES B SENIOR NOTES DUE 2007
                      WHICH HAVE BEEN REGISTERED UNDER THE
           SECURITIES ACT OF 1933 FOR ANY AND ALL OF ITS OUTSTANDING
                     9 3/4% SERIES A SENIOR NOTES DUE 2007
                       (PRINCIPAL AMOUNT $1,000 PER NOTE)
                           PURSUANT TO THE PROSPECTUS
                         DATED OCTOBER          , 1997
 
THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY
TIME, ON NOVEMBER             , 1997 UNLESS THE OFFER IS EXTENDED.
 
To Brokers, Dealers, Commercial Banks,
Trust Companies and Other Nominees:
 
     Dailey International Inc., a Delaware corporation (the "Issuer"), is
offering, upon the terms and subject to the conditions set forth in the
Prospectus dated October   , 1997 (the "Prospectus") and the accompanying Letter
of Transmittal enclosed herewith (which together constitute the "Exchange
Offer"), to exchange its 9 3/4% Series B Senior Notes due 2007 (the "Exchange
Notes") for a like principal amount of its outstanding 9 3/4% Series A Senior
Notes due 2007 (the "Outstanding Notes", and together with the Exchange Notes,
the "Notes"). The Exchange Notes will be unsecured obligations of the Company
and are identical in all respects to the Outstanding Notes, except (i) the
Exchange Notes have been registered pursuant to the Securities Act of 1933, as
amended (the "Securities Act") and, therefore, will not bear legends restricting
their transfer, (ii) the holders of the Exchange Notes will not be entitled to
certain rights under the Registration Rights Agreement dated as of August 19,
1997 among the Company, the Subsidiary Guarantors (as defined in the Prospectus)
and the Initial Purchaser (as defined in the Prospectus) of the Outstanding
Notes, and (iii) the Exchange Notes will not contain certain provisions
providing for an increase in the interest rate paid thereon. The Outstanding
Notes have been, and the Exchange Notes will be, issued under an Indenture dated
as of August 19, 1997 among the Company, the Subsidiary Guarantors (as defined
in the Prospectus) and U.S. Trust Company of Texas, N.A., as trustee.
Outstanding Notes may be tendered in whole or in part in integral multiples of
$1,000.
 
     THE EXCHANGE OFFER IS SUBJECT TO CERTAIN CONDITIONS. SEE "THE EXCHANGE
OFFER -- CONDITIONS" IN THE PROSPECTUS.
 
     Enclosed herewith for your information and forwarding to your clients are
copies of the following documents:
 
          1. the Prospectus, dated October   , 1997;
 
          2. the Letter of Transmittal for your use and for the information of
     your clients (facsimile copies of the Letter of Transmittal may be used to
     tender Outstanding Notes);
 
          3. a form of letter which may be sent to your clients for whose
     accounts you hold Outstanding Notes registered in your name or in the name
     of your nominee, with space provided for obtaining such clients'
     instructions with regard to the Exchange Offer; and
 
          4. a Notice of Guaranteed Delivery.
 
     YOUR PROMPT ACTION IS REQUESTED. PLEASE NOTE THAT THE EXCHANGE OFFER WILL
EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON NOVEMBER             , 1997, UNLESS
EXTENDED. PLEASE FURNISH COPIES OF THE ENCLOSED MATERIALS TO THOSE OF YOUR
CLIENTS FOR WHOM YOU HOLD OUTSTANDING NOTES REGISTERED IN YOUR NAME OR IN THE
NAME OF YOUR NOMINEE AS QUICKLY AS POSSIBLE.
   19
 
     In all cases, exchanges of Outstanding Notes accepted for exchange pursuant
to the Exchange Offer will be made only after receipt by the Exchange Agent of
(a) certificates representing such Outstanding Notes, or a confirmation of a
book-entry transfer into the Exchange Agent's account at the Book-Entry Transfer
Facility (as defined in the Prospectus), as the case may be, (b) the Letter of
Transmittal (or facsimile thereof), properly completed and duly executed, [or an
Agent's Message (as defined in the Prospectus)] and (c) any other required
documents.
 
     Holders who wish to tender their Outstanding Notes and (i) whose
Outstanding Notes are not immediately available or (ii) who cannot deliver their
Outstanding Notes, the Letter of Transmittal [or an Agent's Message] or any
other documents required by the Letter of Transmittal to the Exchange Agent
prior to the Expiration Date or (iii) who cannot complete the procedures for
book-entry transfer prior to the Expiration Date must tender their Outstanding
Notes according to the guaranteed delivery procedures set forth under the
caption "The Exchange Offer -- Guaranteed Delivery Procedures" in the
Prospectus.
 
     The Exchange Offer is not being made to, nor will tenders be accepted from
or on behalf of, holders of Outstanding Notes residing in any jurisdiction in
which the making of the Exchange Offer or acceptance thereof would not be in
compliance with the laws of such jurisdiction.
 
     The Issuer will not make any payments to brokers, dealers or other persons
for soliciting acceptances of the Exchange Offer. The Issuer will, however, upon
request, reimburse you for customary clerical and mailing expenses incurred by
you in forwarding any of the enclosed materials to your clients. The Issuer will
pay or cause to be paid any transfer taxes payable on the transfer of
Outstanding Notes to it, except as otherwise provided in the Letter of
Transmittal.
 
     Questions and requests for assistance with respect to the Exchange Offer or
for copies of the Prospectus and Letter of Transmittal may be directed to the
Exchange Agent at its address set forth in the Prospectus or at
[(  )          ].
 
                                            Very truly yours,
 
                                            DAILEY INTERNATIONAL INC.
 
     NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU
OR ANY OTHER PERSON THE AGENT OF THE ISSUER OR ANY AFFILIATE THEREOF, OR
AUTHORIZE YOU OR ANY OTHER PERSON TO MAKE ANY STATEMENTS OR USE ANY DOCUMENT ON
BEHALF OF ANY OF THEM IN CONNECTION WITH THE EXCHANGE OFFER OTHER THAN THE
ENCLOSED DOCUMENTS AND THE STATEMENTS CONTAINED THEREIN.
   20
 
                           DAILEY INTERNATIONAL INC.
 
                             OFFER TO EXCHANGE ITS
                     9 3/4% SERIES B SENIOR NOTES DUE 2007
          WHICH HAVE BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933
                       FOR ANY AND ALL OF ITS OUTSTANDING
                     9 3/4% SERIES A SENIOR NOTES DUE 2007
                       (PRINCIPAL AMOUNT $1,000 PER NOTE)
                           PURSUANT TO THE PROSPECTUS
                            DATED OCTOBER    , 1997
 
THE EXCHANGE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 5:00 P.M., NEW YORK CITY
TIME, ON NOVEMBER             , 1997 UNLESS THE OFFER IS EXTENDED.
 
TO OUR CLIENTS:
 
     Enclosed for your consideration is a Prospectus dated October   , 1997 (the
"Prospectus") and a Letter of Transmittal (which together constitute the
"Exchange Offer") relating to the offer by Dailey International Inc. (the
"Issuer") to exchange its 9 3/4% Series B Senior Notes due 2007 (the "Exchange
Notes") for a like principal amount of its outstanding 9 3/4% Series A Senior
Notes due 2007 (the "Outstanding Notes", and together with the Exchange Notes,
the "Notes"). The Exchange Notes will be unsecured obligations of the Company
and are identical in all respects to the Outstanding Notes, except (i) the
Exchange Notes have been registered pursuant to the Securities Act of 1933, as
amended (the "Securities Act") and, therefore, will not bear legends restricting
their transfer, (ii) the holders of the Exchange Notes will not be entitled to
certain rights under the Registration Rights Agreement dated as of August 19,
1997 among the Company, the Subsidiary Guarantors (as defined in the Prospectus)
and the Initial Purchaser (as defined in the Prospectus) of the Outstanding
Notes, and (iii) the Exchange Notes will not contain certain provisions
providing for an increase in the interest rate paid thereon. The Outstanding
Notes have been, and the Exchange Notes will be, issued under an Indenture dated
as of August 19, 1997 among the Company, the Subsidiary Guarantors (as defined
in the Prospectus) and U.S. Trust Company of Texas, N.A., as trustee.
Outstanding Notes may be tendered in whole or in part in integral multiples of
$1,000.
 
     The enclosed material is being forwarded to you as the beneficial owner of
Outstanding Notes held by us for your account at benefit but not registered in
your name. An exchange of any Outstanding Notes may only be made by us as the
registered Holder pursuant to your instructions. Therefore, the Issuer urges
beneficial owners of Outstanding Notes registered in the name of a broker,
dealer, commercial bank, trust company or other nominee to contact such Holder
promptly if they wish to exchange Outstanding Notes in the Exchange Offer.
 
     Accordingly, we request instructions as to whether you wish us to exchange
any or all such Outstanding Notes held by us for your account or benefit,
pursuant to the terms and conditions set forth in the Prospectus and Letter of
Transmittal. We urge you to read carefully the Prospectus and Letter of
Transmittal before instructing us to exchange your Outstanding Notes.
 
     Your instructions to us should be forwarded as promptly as possible in
order to permit us to exchange Outstanding Notes on your behalf in accordance
with the provisions of the Exchange Offer. The Exchange Offer expires at 5:00
p.m., New York City time, on November   , 1997, unless extended. The term
"Expiration Date" shall mean 5:00 p.m., New York City time, on November   ,
1997, unless the Exchange Offer is extended as provided in the Prospectus, in
which case the term "Expiration Date" shall mean the latest date and time to
which the Exchange Offer is extended. A tender of Outstanding Notes may be
withdrawn at any time prior to 5:00 p.m., New York City time, on the Expiration
Date.
   21
 
     Your attention is directed to the following:
 
          1. The Exchange Offer is for the exchange of $1,000 principal amount
     of Exchange Notes for each $1,000 principal amount of Outstanding Notes.
     $115,000,000 aggregate principal amount of Outstanding Notes was
     outstanding as of October   , 1997.
 
          2. THE EXCHANGE OFFER IS SUBJECT TO CERTAIN CONDITIONS. SEE "THE
     EXCHANGE OFFER -- CONDITIONS" IN THE PROSPECTUS.
 
          3. The Exchange Offer and withdrawal rights will expire at 5:00 p.m.,
     New York City time, on November   , 1997, unless extended.
 
          4. The Issuer has agreed to pay certain expenses of the Exchange
     Offer. Any transfer taxes incident to the transfer of Outstanding Notes
     from the tendering Holder to the Issuer will be paid by the Issuer, except
     as provided in the Prospectus and the Letter of Transmittal. See "The
     Exchange Offer -- Fees and Expenses" in the Prospectus.
 
     The Exchange Offer is not being made to, nor will tenders be accepted from
or on behalf of Holders of Outstanding Notes, residing in any jurisdiction in
which the making of the Exchange Offer or acceptance thereof would not be in
compliance with the laws of such jurisdiction.
 
     If you wish us to tender any or all of your Outstanding Notes held by us
for your account or benefit, please do instruct us by completing, executing and
returning to us the attached instruction form. The accompanying Letter of
Transmittal is furnished to you for informational purposes only and may not be
used by you to exchange Outstanding Notes held by us and registered in our name
for your account or benefit.
   22
 
                                  INSTRUCTIONS
 
     The undersigned acknowledge(s) receipt of your letter and the enclosed
material referred to therein relating to the Exchange Offer of Dailey
International Inc.
 
     This will instruct you to tender for exchange the aggregate principal
amount of Outstanding Notes indicated below (or, if no aggregate principal
amount is indicated below, all Outstanding Notes) held by you for the account or
benefit of the undersigned, pursuant to the terms of and conditions set forth in
the Prospectus and the Letter of Transmittal.
 
  Aggregate Principal Amount of Outstanding Notes to be tendered for exchange:
 
                                       $
                        ------------------------------ *
 
*I (we) understand that if I (we) sign this instruction form without indicating
an aggregate principal amount of Outstanding Notes in the space above, all
Outstanding Notes held by you for my (our) account will be tendered for
exchange.
 
                                            ------------------------------------
 
                                            ------------------------------------
                                            Signature(s)
 
                                            ------------------------------------
                                            Capacity (full title) if signing in
                                            a
                                            fiduciary or representative capacity
 
                                            ------------------------------------
 
                                            ------------------------------------
 
                                            ------------------------------------
                                            Name(s) and address, including zip
                                            code
 
                                            Date:
                                            ------------------------------------
 
                                            ------------------------------------
                                            Area Code and Telephone Number
 
                                            ------------------------------------
                                            Taxpayer Identification or Social
                                            Security No.
   23
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
 
     GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE
PAYER. Social Security numbers have nine digits separated by two hyphens (i.e.
000-00-0000). Employer identification numbers have nine digits separated by only
one hyphen (i.e. 00-0000000). The table below will help determine the number to
give the payer.
 


- --------------------------------------------------------------
                                              GIVE THE
                                          SOCIAL SECURITY
     FOR THIS TYPE OF ACCOUNT:              NUMBER OF --
- --------------------------------------------------------------
                                
 1.  An individual's account          The individual
 2.  Two or more individuals (joint   The actual owner of the
     account)                         account or, if combined
                                      funds, any one of the
                                      individual(s)
 3.  Husband and wife (joint          The actual owner of the
     account)                         account or, if joint
                                      funds, either person(1)
 4.  Custodian account of a minor     The minor(2)
     (Uniform Gift to Minors Act)
 5.  Adult and minor (joint account)  The adult or, if the
                                      minor is the only
                                      contributor, the
                                      minor(1)
 6.  Account in the name of guardian  The ward, minor, or
     or committee for a designated    incompetent person(3)
     ward, minor or incompetent
     person
 7.  a. The usual revocable savings   The grantor-trustee(1)
        trust (grantor is also
        trustee)
     b. So-called trust account that  The actual owner(1)
        is not a legal or valid
        trust under state law
 8.  Sole proprietorship              The owner(4)
- --------------------------------------------------------------

 


- --------------------------------------------------------------
                                         GIVE THE EMPLOYER
                                           IDENTIFICATION
     FOR THIS TYPE OF ACCOUNT:              NUMBER OF --
- --------------------------------------------------------------
                                
 9.  A valid trust, estate or         The legal entity (5) (Do
     pension trust                    not furnish the
                                      identifying number of
                                      the personal
                                      representative or
                                      trustee unless the legal
                                      entity itself is not
                                      designated in the
                                      account title.)
10.  Corporate account                The corporation
11.  Religious, charitable or         The organization
     educational organization
     account
12.  Partnership account              The partnership
13.  Association, club or other tax-  The organization
     exempt organization
14.  A broker or registered nominee   The broker or nominee
15.  Account with the Department of   The public entity
     Agriculture in the name of a
     public entity (such as a state
     or local government, school
     district or prison) that
     receives agricultural program
     payments
- --------------------------------------------------------------

 
(1) List first and circle the name of the person whose number you furnish.
(2) Circle the minor's name and furnish the minor's social security number.
(3) Circle the ward's, minor's or incompetent person's name and furnish such
    person's social security number.
(4) Show the name of the owner.
(5) List first and circle the name of the legal trust, estate or pension trust.
NOTE:If no name is circled when there is more than one name, the number will be
     considered to be that of the first name listed.
   24
 
            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
 
                                     PAGE 2
 
OBTAINING A NUMBER
 
If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for a Social Security Number Card, or Form
SS-4, Application for Employer Identification Number, at the local office of the
Social Security Administration or the Internal Revenue Service and apply for a
number.
 
PAYEES EXEMPT FROM BACKUP WITHHOLDING
 
Payees specifically exempted from backup withholding on ALL payments include the
following:
 
- - A corporation.
 
- - A financial institution.
 
- - An organization exempt from tax under Section 501(a), of the Internal Revenue
  Code or an individual retirement plan.
 
- - The United States or any agency or instrumentality thereof.
 
- - A State, the District of Columbia, a possession of the United States, or any
  subdivision or instrumentality thereof.
 
- - A foreign government, a political subdivision of a foreign government, or any
  agency or instrumentality thereof.
 
- - An international organization or any agency, or instrumentality thereof.
 
- - A dealer in securities or commodities required to register in the United
  States or a possession of the United States.
 
- - A real estate investment trust.
 
- - A common trust fund operated by a bank under Section 584(a) of the Internal
  Revenue Code.
 
- - An exempt charitable remainder trust, or a non-exempt trust described in
  Section 4947(a)(1) of the Internal Revenue Code.
 
- - An entity registered at all times under the Investment Company Act of 1940.
 
- - A foreign central bank of issue.
 
Payments of interest not generally subject to backup withholding include the
following:
 
- - Payments of interest on obligations issued by individuals. Note: You may be
  subject to backup withholding if this interest is $600 or more and is paid in
  the course of the payer's trade or business and you have not provided your
  correct taxpayer identification number to the payer.
 
- - Payments of tax-exempt interest (including exempt-interest dividends under
  Section 852 of the Internal Revenue Code).
 
- - Payments described in Section 6049(b)(5) of the Internal Revenue Code.
 
- - Payments on tax-free covenant bonds under Section 1451 of the Internal Revenue
  Code.
 
- - Payments made by certain foreign organizations.
 
Exempt payees described above must still complete the Substitute Form W-9
enclosed herewith to avoid possible erroneous backup withholding. FILE THIS FORM
WITH THE PAYER, FURNISH YOUR TAXPAYER IDENTIFICATION NUMBER, WRITE "EXEMPT" ON
THE FACE OF THE FORM, AND RETURN IT TO THE PAYER. IF THE PAYMENTS ARE INTEREST,
DIVIDENDS, OR PATRONAGE DIVIDENDS, ALSO SIGN AND DATE THE FORM.
 
Certain payments other than interest, dividends, and patronage dividends, that
are not subject to information reporting are also not subject to backup
withholding. For details, see the regulations under sections 6041, 6041A(a),
6042, 6044, 6045, 6049, 6050A and 6050N of the Internal Revenue Code.
 
PRIVACY ACT NOTICE. -- Section 6109 of the Internal Revenue Code requires most
recipients of dividends, interest, or other payments to give taxpayer
identification numbers to payers who must report the payments to the Internal
Revenue Service. Internal Revenue Service uses the numbers for identification
purposes and to help verify the accuracy of the recipient's tax return. Payers
must be given the numbers whether or not recipients are required to file tax
returns. Payers must generally withhold 31% of the gross amount of interest,
dividends, and certain other payments to a payee who does not furnish a taxpayer
identification number to a payer. Certain penalties may also apply.
 
PENALTIES
 
(1) PENALTY FOR FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER. -- If you
fail to furnish your taxpayer identification number to a payer, you are subject
to a penalty of $50 for each such failure unless your failure is due to
reasonable cause and not to willful neglect.
 
(2) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING. -- If you
make a false statement with no reasonable basis which results in no imposition
of backup withholding, you are subject to a penalty of $500.
 
(3) CRIMINAL PENALTY FOR FALSIFYING INFORMATION. -- Falsifying certifications or
affirmations may subject you to criminal penalties including fines and/or
imprisonment.
 
FOR ADDITIONAL INFORMATION CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
SERVICE.