Asset Purchase Agreement


                                      among


                             WellTech Eastern, Inc.,


                           Diamond Well Service, Inc.,


                                 John Scott and


                                 Dwayne Wardwell






                                 April 3, 1997




                                        1

                            ASSET PURCHASE AGREEMENT

This Asset Purchase  Agreement (this AAgreement@) is entered into as of April 3,
1997 (the AEffective Date@) among WellTech Eastern, Inc., a Delaware corporation
(ABuyer@),  Diamond Well Service, Inc., an Oklahoma corporation (ASeller@), John
Scott and Dwayne Wardwell,  owners of all of the issued and outstanding stock of
the Seller (the AShareholders@).
                                   WITNESSETH:

WHEREAS,  Seller  desires to sell  substantially  all of its  assets,  and Buyer
desires to purchase such assets.

NOW,   THEREFORE,   in   consideration   of  the  premises  and  of  the  mutual
representations, warranties, covenants, and agreements, and subject to the terms
and conditions herein contained, the parties hereto hereby agree as follows:

                                    Article I


                           Purchase and Sale of Assets

1.1 Purchase and Sale of the Assets..  Subject to the terms and  conditions  set
forth in this Agreement,  Seller hereby agrees to sell, convey, transfer, assign
and  deliver  to  Buyer,  and  Buyer  hereby  agrees to  purchase  from  Seller,
substantially all of the assets of Seller existing on the date hereof other than
the Excluded  Assets  (defined  below),  whether real,  personal,  tangible,  or
intangible,  including  the  following  assets of Seller  relating to or used or
useful in the  operation of the business of Seller as conducted by Seller on and
before the date hereof (the  ABusiness@)  (all such assets being sold  hereunder
are referred to collectively herein as the AAssets@):

(a) the  tangible  personal  property of Seller (such as  machinery,  equipment,
leasehold  improvements,  furniture  and fixtures,  and vehicles)  which is more
fully described on Schedule 1.1(a) hereto (collectively,  the ATangible Personal
Property@);

(b) certain of Seller=s  intangible assets  (collectively,  the  AIntangibles@),
including (I) all of Seller=s rights to the names under which it is incorporated
or under which it currently  does business,  (ii) all of Seller=s  rights to any
patents, copyrights,  trademarks,  service marks, licenses or sublicenses, trade
names,  written know-how,  trade secrets and all other similar  proprietary data
and  the  goodwill  associated   therewith   (collectively,   the  AIntellectual
Property@)  used  or held in  connection  with  the  business,  including  those
specifically  listed  on  Schedule  1.1(c)  hereto  (collectively,  the  ASeller
Intellectual  Property@),  and  (iii)  all of  Seller=s  rights in its sales and
promotional  literature,  computer  software,  customer and supplier lists;  (c)
those  leases,   subleases,   contracts,   contract   rights,   and  agreements,
(collectively,  the  AContracts@)  relating to the  operation  of the  Business,
specifically  listed on Schedule  1.1(d) hereto  (collectively,  the Transferred
AContracts@);

(d) to the extent  transferrable,  all  permits,  authorizations,  certificates,
approvals,   registrations,   variances,  waivers,  exemptions,   rights-of-way,
franchises,  ordinances,  licenses and other rights of every kind and  character
(collectively,   the  APermits@)  of  Seller   obtained  from   governments  and
governmental agencies relating to including,  without limitation,  that which is
more fully  described  on  Schedule  1.1(e)  hereto  (collectively,  the ASeller
Permits@); and,

(e) the goodwill and going concern value of the Business.

The  Assets  shall  not  include  the  following  (collectively,  the  AExcluded
Assets@); (I) all of Seller=s accounts receivable and all other rights of Seller
to payment for services  rendered by Seller  before the date hereof (the ASeller
Receivables@);  (ii) all cash accounts,  cash equivalents or similar investments
of Seller  and all petty  cash of Seller  kept on hand for use in the  Business;
(iii) all right,  title and  interest of Seller in and to all  prepaid  rentals,
other prepaid expenses,  prepaid taxes, bonds,  deposits and financial assurance
requirements,  and other  current  assets  relating  to any of the Assets of the
Business; (iv) the corporate charter,  corporate seal,  organizational documents
and minute books of Seller;  (v) all assets in possession of Seller but owned by
third  parties;  (vi) all rights under the Contracts of Seller not  specifically
assigned to Buyer  hereunder;  and (viii) Seller=s right,  title and interest in
and to this  Agreement;  (ix) the right to prosecute and collect claims relating
to business of Seller prior to the date hereof.


1.2  Consideration  for Assets.  As consideration  for the sale of the Assets to
Buyer and for the other  covenants and  agreements of Seller  contained  herein,
Buyer (I) agrees to pay to Seller, on the date hereof, the amount of $675,000 in
the form of a  cashier=s  check or bank check or wire  transfer  of  immediately
available funds to an account designated by Seller.

1.3 Assumed  Liabilities.  Buyer shall assume only those  liabilities  of Seller
associated with Buyer=s assumption of the Transferred Contracts. Seller shall be
responsible  for all other  liabilities of Seller  (collectively,  the ARetained
Liabilities@),  including,  without  limitation all  obligations and liabilities
owed by Seller to the Employees (as defined in Section 2.1.10 hereof).

                                   Article II

                         Representations and Warranties
                         of Seller and the Shareholders

2.1   Representations   and  Warranties  of  Seller.  Each  of  Seller  and  the
Shareholders jointly and severally represent and warrant to Buyer as follows:

2.1.1.  Organization and Good Standing.  Seller is a corporation duly organized,
validly  existing  and in good  standing  under  the  laws of the  state  of its
organization,  has full requisite  corporate power and authority to carry on its
business as it is  currently  conducted,  and to own and operate the  properties
currently  owned and  operated  by it, and is duly  qualified  or licensed to do
business  and is in good  standing  as a foreign  corporation  authorized  to do
business in all  jurisdictions in which the character of the properties owned or
the nature of the  business  conducted  by it would make such  qualification  or
licensing necessary, except where the failure to so qualify or be licensed would
not have a material adverse effect on the Assets or the Business.

2.1.2.  Agreements  Authorized  and  their  Effect  on  Other  Obligations.  The
execution and delivery of this  Agreement and all other  agreements  executed by
Seller or the  Shareholders  and delivered to Buyer in connection  herewith (the
ASeller  Agreements@) have been authorized by all necessary  corporate action on
the part of Seller,  and this Agreement and the Seller  Agreements are valid and
binding  obligations  of Seller and  Shareholders,  as  applicable,  enforceable
(subject to normal equitable principals) against such parties in accordance with
their terms, except as enforceability may be limited by bankruptcy,  insolvency,
reorganization,  debtor relief or similar laws affecting the rights of creditors
generally.  The  execution,  delivery and  performance of this Agreement and the
Seller  Agreements and the consummation of the transaction  contemplated  hereby
and thereby,  will not  conflict  with or result in a violation or breach of any
term or provision  of, nor  constitute a default under (I) the charter or bylaws
of Seller,  (ii) any  obligation,  indenture,  mortgage,  deed of trust,  lease,
contract or other  agreement  to which Seller or  Shareholders  is a party or by
which Seller or Shareholders or their respective  properties are bound; or (iii)
any provision of any law, rule, regulation, order, permits,  certificate,  writ,
judgment,  injunction,  decree,  determination,  award or other  decision of any
court,   arbitrator,   or  other  governmental  authority  to  which  Seller  or
Shareholders or any of their respective properties are subject.

2.1.3.  Financial Statement;  Absence of Certain Changes and Events.  Seller has
delivered to Buyer copies of certain unaudited  financial  statements of Seller.
Such financial  statements are attached hereto as Schedule 2.1.3  (collectively,
the ASeller  Financial  Statements@)  and include  Seller=s  balance  sheet (the
AJanuary 31, Balance  Sheet@) as at January 31, 1997 (the ABalance Sheet Date@).
The Seller Financial Statements present fairly and fully the financial condition
of the Seller as at the dates and for the periods indicated thereon, subject, in
the case of interim financial statements, to normal year end adjustments.  Other
than as a result of the transactions  contemplated by this Agreement,  since the
Balance Sheet Date, there has not been (whether as a result of a single event or
in the  aggregate):  (a) Financial  Change.  Any material  adverse change in the
Assets,  the Business or the financial  condition,  operations,  liabilities  or
prospects of Seller; (b) Property Damage. Any material damage,  destruction,  or
loss to any of the Assets or the Business (whether or not covered by insurance);
(c)  Waiver.  Any  waiver or  release  of a  material  right of or claim held by
Seller;   (d)  Change  in  Assets.  Any  acquisition,   disposition,   transfer,
encumbrance,  mortgage,  pledge or other  encumbrance  of any material  asset of
Seller other than in the ordinary course of business;  (e) Labor  Disputes.  Any
labor disputes between Seller and its employees; or (f) Other Changes. Any other
event or condition  known to either  Seller or  Shareholders  that  particularly
pertains  to and has or is  likely  to have a  material  adverse  effect  on the
Assets, the operations and the Business or the financial  condition or prospects
of Seller.

2.1.4. Transferred Contracts. All of the Transferred Contracts are in full force
and effect,  and constitute valid and binding  obligations of Seller.  Seller is
not, and no other party to any Transferred  Contract is, in default  thereunder,
and no event has occurred which (with or without  notice,  lapse of time, or the
happening  of any  other  event)  would  constitute  a  default  thereunder.  No
Transferred  Contract has been entered into on terms which could  reasonably  be
expected  to have a material  adverse  effect on the use of the Assets by Buyer.
Neither Seller nor the  Shareholders  has received any  information  which would
cause such party to conclude  that any customer of Seller will (or is likely to)
cease doing business with Buyer,  as successor the Business,  as a result of the
consummation of the transactions contemplated hereby.

2.1.5.  Title to and  Condition  of Assets.  Seller has good,  indefeasible  and
marketable  title  to all of the  Assets,  free and  clear  of any  Encumbrances
(defined below).  It is agreed and understood that the Assets are transferred to
Buyer in AS IS condition and neither Seller nor  Shareholders  make any warranty
of any  kind,  express  or  implied.  To  the  knowledge  of  either  Seller  or
Shareholders,  all of the Assets conform to all applicable  laws governing their
use. No notice of any violation of any law,  statute,  ordinance,  or regulation
relating  to any of the  Assets  has been  received  by Seller or  Shareholders,
except such as have been fully complied with. The term AEncumbrances@  means all
liens, security interests, pledges, mortgages, deeds of trust, claims, rights of
first  refusal,  options,  charges,  restrictions  or  conditions to transfer or
assignment, liabilities, obligations, privileges, equities, easements, rights of
way, limitations, reservations, restrictions, and other encumbrances of any kind
or nature.

2.1.6. Licenses and Permits. Each of the Seller Permits and Seller=s rights with
respect  thereto  is  valid  and  subsisting,  in full  force  and  effect,  and
enforceable by Seller subject to  administrative  powers of regulatory  agencies
having  jurisdiction.  Seller is in compliance in all material respects with the
terms of each of the Seller Permits.  None of the Seller Permits has been, or to
the  knowledge  of  Seller  or  Shareholders,  are  threatened  to be,  revoked,
canceled,   suspended  or  modified.   Upon  consummation  of  the  transactions
contemplated hereby, each of the Seller Permits shall have been validly assigned
to Buyer,  will be valid and  subsisting  in full force and effect,  and will be
enforceable  by Buyer subject to  administrative  powers of regulatory  agencies
having jurisdiction.

2.1.7.  Intellectual  Property.  The Seller  Intellectual  Property  is owned or
licensed by Seller free and clear of any Encumbrances. Seller has not granted to
any other person any license to use any Seller Intellectual Property. Use of the
Seller  Intellectual  Property  by Buyer  will  not,  and the use of the  Seller
Intellectual  Property by Seller did not,  infringe,  misappropriate or conflict
with  the  intellectual  property  rights  of  others.  Neither  Seller  nor the
Shareholders  has  received  any notice of  infringement,  misappropriation,  or
conflict with the intellectual  property rights of others in connection with the
use by Seller of the Seller Intellectual Property.

2.1.8.  Necessary  Consents.  Seller has  obtained  and  delivered  to Buyer all
consents to  assignment  or waivers  thereof  required  to be obtained  from any
governmental  authority  or from any  other  third  party  in  order to  validly
transfer the Assets  hereunder,  including the  assignment of the Seller Permits
and the Transferred Contracts.

2.1.9.  Employees.  Schedule 2.1.10 hereto is a complete and accurate listing of
all  employees  of  Seller  that  are  involved  in  the  ownership,  operation,
maintenance  or  use  of  the  Assets  or  the  conduct  of  the  Business  (the
AEmployees@).  Seller does not currently sponsor, maintain or contribute to, and
has not at anytime sponsored,  maintained or contributed to any employee benefit
plan which is or was subject to any provisions of the Employee Retirement Income
Security Act of 1974,  as amended.  No employee  benefit plan of Seller will, by
its terms or  applicable  law,  become  binding upon or an  obligation of Buyer.
Buyer has not engaged in any unfair labor  practices  which could  reasonably be
expected to result in a material  adverse  effect on the Assets or the Business.
Seller does not have any dispute with any of its  existing or former  employees.
There  are no  labor  disputes  or to the  knowledge  of  Seller,  any  disputes
threatened by current or former employees of Seller.

2.1.10.   Investigations;   Litigation.   No  investigation  or  review  by  any
governmental   entity  with  respect  to  Seller  or  any  of  the  transactions
contemplated  by this  Agreement or the Seller  Agreements is pending or, to the
best  of  Seller=s  knowledge,  threatened,  nor  has  any  governmental  entity
indicated to Seller an intention to conduct the same. There is no suit,  action,
or legal,  administrative,  arbitration,  or other  proceeding  or  governmental
investigation  pending to which Seller is a party or, to the knowledge of Seller
or Shareholders,  to which might become a party, and which particularly  affects
the Assets or property being transferred to Seller.

2.1.11. Absence of Certain Business Practices.  Neither Seller, the Shareholders
nor any officer, employee or agent of Seller, nor any other person acting on its
or his behalf, has, directly or indirectly, within the past five years, given or
agreed to give any gift or similar benefit to any customer, supplier, government
employee  or other  person who is or may be in a position  to help or hinder the
profitable  use of the Assets or conduct of the Business (or to assist Seller in
connection  with any actual or proposed  transaction)  which if not given in the
past,  might have had a material  adverse  effect on the  profitable  use of the
Assets or conduct of the  Business , or if not  continued  in the future,  might
materially  adversely  effect the profitable use of the Assets or conduct of the
Business.

2.1.12.  Solvency.  Seller is not now  insolvent,  nor will  Seller be  rendered
insolvent by the occurrence of the transactions  contemplated by this Agreement.
The term  Ainsolvent@  means that the sum of the present fair and saleable value
of  Seller=s  assets  does not and will not exceed its debts and other  probable
liabilities,  and the term Adebts@ includes any legal liability  whether matured
or unmatured, liquidated or unliquidated, absolute fixed or contingent, disputed
or undisputed or secured or unsecured.

2.1.13. Untrue Statements. Seller has made available to Buyer true, complete and
correct copies of customers, and if required, Seller will make available records
relating principally to the Assets and the business, and such information covers
all commitments  and  liabilities of Seller relating  principally to the Assets.
This  Agreement,  the Seller  Agreements and the other  instruments  executed by
Seller or  Shareholders  and  delivered to Buyer in  connection  herewith do not
include any untrue  statement  of a material  fact or omit to state any material
fact necessary to make the statements  made herein and therein not misleading in
any material respect.

2.1.14.  Finder=s  Fee.  All  negotiations  relative to this  Agreement  and the
transactions   contemplated   hereby  have  been  carried  on  by  Seller,   the
Shareholders and their counsel directly with Buyer and its counsel,  without the
intervention  of any other  person  in such  manner as to give rise to any valid
claim against any of the parties hereto for a brokerage commission, finder=s fee
or any similar payment.

                                   Article III

                     Representations and Warranties of Buyer

3.1  Representations  and Warranties of Buyer.  Buyer represents and warrants to
Seller and Shareholders as follows:

3.1.1. Organization and Standing. Buyer is a corporation duly organized, validly
existing,  and in good standing  under the laws of Delaware,  has full requisite
corporate  power  and  authority  to carry on its  business  as it is  currently
conducted, and to own and operate the properties currently owned and operated by
it, and is duly  qualified or licensed to do business and is in good standing as
a foreign  corporation  authorized to do business in all  jurisdictions in which
the character of the properties owned or the nature of the business conducted by
it would  make such  qualification  or  licensing  necessary,  except  where the
failure to so qualify or be licensed would not have a material adverse effect on
the business of Buyer.

3.1.2.  Agreement Authorized and its Effect on Other Obligations.  The execution
and delivery of this  Agreement and all other  agreements  executed by Buyer and
delivered  to  Seller  or  Shareholders  in  connection   herewith  (the  ABuyer
Agreements@) have been authorized by all necessary  corporate action on the part
of Buyer,  and this  Agreement  and the Buyer  Agreements  are valid and binding
obligations  of Buyer,  enforceable  (subject  to normal  equitable  principals)
against Buyer in accordance with their terms,  except as  enforceability  may be
limited by bankruptcy, insolvency, reorganization, debtor relief or similar laws
affecting  the  rights of  creditors  generally.  The  execution,  delivery  and
performance of this Agreement and the Buyer  Agreements and the  consummation of
the  transactions  contemplated  hereby and thereby  will not  conflict  with or
result in a violation  or breach of any term or provision  of, nor  constitute a
default  under  (I) the  charter  or  bylaws  of  Buyer;  (ii)  any  obligation,
indenture,  mortgage, deed of trust, lease, contract or other agreement to which
Buyer is a party or by which  Buyer or its  properties  are bound;  or (iii) any
provision of any law,  rule,  regulation,  order,  permits,  certificate,  writ,
judgment,  injunction,  decree,  determination,  award or other  decision of any
court,  arbitrator or other governmental  authority to which Buyer or any of its
properties is subject.

3.1.3.  Finder=s  Fee.  All  negotiations  relative  to this  Agreement  and the
transactions  contemplated  hereby have been carried on by Buyer and its counsel
directly  with  Seller,   the  Shareholders  and  their  counsel,   without  the
intervention  of any other  person  as the  result of any act of Buyer in such a
manner as to give rise to any valid claim against any of the parties  hereto for
any brokerage commission, finder=s fee or any similar payment.

                                   Article IV

                              Additional Agreements

4.1  Noncompetition.  Except as otherwise consented to or approved in writing by
Buyer, each of Seller and the Shareholders agree that for a period of thirty-six
(36)  months  following  the  Effective  Date,  they  shall  not,   directly  or
indirectly,  acting  alone or as a member of a  partnership  or a holder  of, or
investor  in as much as 5% of any  security of any class of any  corporation  or
other  business  entity (I) engage in any  business  providing  workover or well
services,  or  providing  any other oil field  services  previously  provided by
Seller  during the  twenty-four  (24) month  period  immediately  preceding  the
execution of this  Agreement  in Oklahoma  (the  ATerritory@);  (ii) request any
present  customers or  suppliers  of Seller to curtail or cancel their  business
with  Buyer;  (iii)  disclose  to any  person,  firm or  corporation  any trade,
technical  or  technological  secrets of Seller or Buyer or any details of their
organization or business affairs or (iv) induce or actively attempt to influence
any  employee  of  Buyer  to  terminate  his  employment.   Notwithstanding  the
foregoing, Seller=s and Shareholders= non-competition obligations shall cease in
the event that Buyer or its  successors in interest,  no longer  engages in like
business in the  Territory.  Seller  agrees that if either the length of time or
geographical  area of the  Territory  is  deemed  too  restrictive  in any court
proceeding,  the court may  reduce  such  restrictions  to those  which it deems
reasonable under the  circumstances.  The obligations  expressed in this Section
4.1 are in addition to any other obligations that Seller or the Shareholders may
have under the laws of any state  requiring a  corporation  who sells its assets
(and the  Shareholders of such  corporation) to limit its activities so that the
goodwill and business  relations being  transferred with such assets will not be
materially  impaired.  Seller further agrees and acknowledge that Buyer does not
have any adequate remedy at law for the breach or threatened breach by Seller of
this covenant, and agree that Buyer may, in addition to the other remedies which
may be available to it  hereunder,  file a suit in equity to enjoin  Seller from
such breach or threatened breach. If any provisions of this Section 4.1 are held
to be invalid or against public policy,  the remaining  provisions  shall not be
affected  thereby.  Seller  acknowledges  that the  covenants  set forth in this
Section 4.1 are being executed and delivered by Seller in  consideration  of the
covenants of Buyer contained in this Agreement,  and for other good and valuable
consideration, receipt of which is hereby acknowledged.

4.2 Employment of the Shareholders.  Buyer hereby agrees to simultaneously  with
execution of this Agreement,  enter into employment  contracts with Shareholders
in the forms of Schedule ___ and ___ hereto.

4.3 Hiring  Employees.  Effective  as of the date hereof,  all of the  Employees
shall be terminated by Seller.  Buyer may, but shall be under no obligation  to,
hire any of the Employees effective as of the date hereof. Except as provided in
Section 1.4 hereof,  Buyer shall have no liability or obligation with respect to
any employee benefits of any Employee except those benefits that accrue pursuant
to such Employees= employment with Buyer on or after the date hereof. Seller and
the  Shareholders  shall  cooperate  with Buyer in connection  with any offer of
employment  from Buyer to the  Employees  and use its best  efforts to cause the
acceptance  of any and all such offers.  All  Employees  hired by Buyer shall be
at-will employees of Buyer.

4.4  Allocation  of Purchase  Price.  The parties  hereto  agree to allocate the
purchase  price paid by Buyer for the Assets  hereunder as set forth on Schedule
4.6 hereto, and shall report this transaction for federal income tax purposes in
accordance with the allocation so agreed upon. The parties hereto for themselves
and for their  respective  successors  and assigns  covenant and agree that they
will file  coordinating  Form  8594=s in  accordance  with  Section  1060 of the
Internal  Revenue Code of 1986,  as amended,  with their  respective  income tax
returns for the taxable year that includes the date hereof.

4.5 Name  Change.  Seller  shall  retain the right to use the name  DIAMOND WELL
SERVICE,  INC.,  for the limited and exclusive  purpose of (i)  prosecuting  and
collecting claims relating to causes of action based on facts occurring prior to
the date hereof.

4.6 Collection of  Receivables.  Buyer shall cooperate with and assist Seller in
collecting  the Seller  Receivables,  which  cooperation  and  assistance  shall
include  promptly  forwarding to Seller all payments  received by Buyer that are
made in respect of the  Seller  Receivables.  Seller  shall  cooperate  with and
assist  Buyer  in  collecting   receivables  of  Buyer,  which  cooperation  and
assistance shall include promptly  forwarding to Buyer all payments  received by
the Seller that are made in respect of Buyer=s receivables.

4.7 Further  Assurances.  From time to time, as and when  requested by any party
hereto,  any other  party  hereto  shall  execute  and  deliver,  or cause to be
executed and delivered,  such documents and instruments and shall take, or cause
to be taken,  such further or other  actions as may be  reasonably  necessary to
effect the transactions contemplated hereby.

4.8 Closing Costs.  Each party will bear the cost and expenses of performing the
acts required of such party under this Agreement, including, without limitation,
attorneys=  fees  and  disbursements  incurred  by  the  respective  parties  in
connection herewith; provided, however, the Buyer will pay all sales tax imposed
by any governmental authority as a result of the sale of Assets and will prepare
and file all sales tax reports and tax returns relating thereto.

4.9 Taxes.  All federal,  state and local taxes  relating to the Property  which
accrued  prior to the date  hereof  will be paid by the  Seller.  All such taxes
incurred on or after the date hereof  (including  sales taxes  arising  from the
sale of the  Property)  will  be paid by the  Buyer  and  the  Buyer  agrees  to
indemnify and hold the Seller and Shareholders harmless with respect thereto.

4.10 Insurance. All existing insurance policies maintained by the Seller will be
terminated  on the date hereof and the Buyer will be  responsible  for obtaining
its own insurance subsequent thereto.

4.11 Possession; Risk of Loss. Possession of the Assets will be delivered to the
Buyer by the  Seller on the date  hereof and the risk of loss will pass from the
Seller to the Buyer on such delivery of possession.

4.12 Attorneys= Fees. If either party institutes an action or proceeding against
the other relating to the provisions of this Agreement or any default hereunder,
the prevailing  party in such action or proceeding will be entitled to receive a
reasonable attorneys= fee as a part of its costs incurred therein.

                                    Article V

                                 Indemnification

5.1  Indemnification  by Seller and the  Shareholders.  In addition to any other
remedies available to Buyer under this Agreement,  or at law or in equity,  each
of Seller and Shareholders shall, jointly and severally,  indemnify,  defend and
hold harmless Buyer, and its respective officers,  directors,  employees, agents
and  stockholders,  against  and  with  respect  to any and all  claims,  costs,
damages, losses, expenses, obligations,  liabilities,  recoveries, suits, causes
of  action  and  deficiencies,  including  interest,  penalties  and  reasonable
attorneys= fees and expenses (collectively,  the ADamages@) that such indemnitee
shall incur or suffer,  which arise, result from or relate to (I) any breach of,
or  failure   by  Seller  or   Shareholders   to   perform,   their   respective
representations, warranties, covenants or agreements in this Agreement or in any
schedule,  certificate,  exhibit or other  instrument  furnished or delivered to
Buyer by Seller or the  Shareholders  under this Agreement and (ii) the Retained
Liabilities.

5.2  Indemnification  by Buyer.  In addition to any other remedies  available to
Seller or  Shareholders  under this  Agreement,  or at law or in  equity,  Buyer
shall,  jointly  and  severally,   indemnify,   defend  and  hold  harmless  the
Shareholders,  Seller and its officers, directors,  employees and agents against
and with  respect to any and all Damages  that such  indemnities  shall incur or
suffer, which arise, result from or relate to any breach of, or failure by Buyer
to perform any of its  representations,  warranties,  covenants or agreements in
this  Agreement or in any  schedule,  certificate,  exhibit or other  instrument
furnished or delivered  to Seller or the  Shareholders  by or on behalf of Buyer
under this Agreement.

5.3  Indemnification  Procedure.  If any party  hereto  discovers  or  otherwise
becomes aware of an  indemnification  claim arising under Section 5.1 or Section
5.2 of this Agreement,  such indemnified  party shall give written notice to the
indemnifying  party,  specifying  such claim,  and may  thereafter  exercise any
remedies available to such party under this Agreement  provided,  however,  that
the failure of any indemnified party to give notice as provided herein shall not
relieve the indemnifying party of any obligations  hereunder,  to the extent the
indemnifying party is not materially prejudiced thereby. Further, promptly after
receipt by an indemnified  party hereunder of written notice of the commencement
of any action or  proceeding  with respect to which a claim for  indemnification
may be made pursuant to this Article 5, such indemnified party shall, if a claim
in respect thereof is to be made against any  indemnifying  party,  give written
notice to the latter of the commencement of such action provided,  however, that
the failure of any indemnified party to give notice as provided herein shall not
relieve the indemnifying party of any obligations  hereunder,  to the extent the
indemnifying party is not materially prejudiced thereby. In case any such action
is  brought  against an  indemnified  party,  the  indemnifying  party  shall be
entitled to participate in and to assume the defense  thereof,  jointly with any
other  indemnifying  party similarly  notified,  to the extent that it may wish,
with counsel  reasonably  satisfactory to such indemnified party, and after such
notice from the indemnifying  party to such indemnified party of its election so
to assume the defense  thereof,  the  indemnifying  party shall not be liable to
such indemnified party for any legal or other expenses  subsequently incurred by
the latter in connection with the defense thereof unless the indemnifying  party
has failed to assume the defense of such claim and to employ counsel  reasonably
satisfactory to such indemnified person. An indemnifying party who elects not to
assume the defense of a claim  shall not be liable for the fees and  expenses of
more than one counsel in any single  jurisdiction for all parties indemnified by
such  indemnifying  party with  respect to such claim or with  respect to claims
separate but similar or related in the same jurisdiction arising out of the same
general allegations.  Notwithstanding any of the foregoing to the contrary,  the
indemnified  party will be  entitled  to select its own  counsel  and assume the
defense of any action  brought  against it if the  indemnifying  party  fails to
select counsel reasonably satisfactory to the indemnified party, the expenses of
such defense to be paid by the indemnifying  party. No indemnifying  party shall
consent to entry of any judgment or enter into any settlement  with respect to a
claim without the consent of the indemnified  party,  which consent shall not be
unreasonably  withheld,  or unless such  judgment or  settlement  includes as an
unconditional  term  thereof  the giving by the  claimant or  plaintiff  to such
indemnified party of a release from all liability with respect to such claim. No
indemnified  party  shall  consent  to entry of any  judgment  or enter into any
settlement  of any such  action,  the  defense  of which has been  assumed by an
indemnifying  party,  without  the  consent of such  indemnifying  party,  which
consent shall not be unreasonably withheld.

                                   Article VI

                                  Miscellaneous

6.1 Survival of Representations,  Warranties and Covenants. All representations,
warranties,  covenants and  agreements  made by the parties hereto shall survive
indefinitely without limitation, notwithstanding any investigation made by or on
behalf  of  any  of  the  parties  hereto.  All  statements   contained  in  any
certificate,  schedule,  exhibit or other instrument  delivered pursuant to this
Agreement  shall be deemed to have been  representations  and  warranties by the
respective party or parties,  as the case may be, and shall also survive without
limitation despite any investigation made by any party hereto or on its behalf.

6.2 Entirety.  This Agreement  embodies the entire  agreement  among the parties
with respect to the subject matter hereof,  and all prior agreements between the
parties with respect thereto are hereby superseded in their entirety.

6.3  Counterparts.  This Agreement may be executed in one or more  counterparts,
each of  which  shall  deemed  to be an  original  instrument,  but all of which
together shall constitute one and the same instrument.

6.4 Notices and  Waivers.  Any notice or waiver to be given to any party  hereto
shall be in  writing  and  shall be  delivered  by  courier,  sent by  facsimile
transmission  or first class  registered  or certified  mail,  postage  prepaid,
return receipt requested.

If to Buyer

Addressed to:                                With Copy to:

WellTech Eastern, Inc.                       William P. Parker, P. C.
c/o Key Energy Group, Inc.                   Attorney at Law
Two Tower Center, Tenth Floor                2212 N.W. 50th
East Brunswick, NJ 08816                     Suite 163
Attn: General Counsel                        Oklahoma City, OK 73112
Facsimile: (908) 247-5148

If to Seller or Shareholders

Addressed to:                                With Copy to:

Diamond Well Service, Inc.                   Rebecca J. Sherwood, Esq.
1680 Southwest 86th Street                   Fellers, Snider, Blankenship,
Oklahoma City, OK 73159                      Bailey & Tippens, P.C.
                                             Bank One Tower
Mr. John Scott                               101 N. Broadway, Suite 1700
12216 Lorien Way                             Oklahoma City, OK 73102
Oklahoma City, OK 73170                      Telephone: (405) 232-0621

Mr. Dwayne Wardwell
P. O. Box 156
Paoli, OK 73074

Any communication so addressed and mailed by first-class registered or certified
mail,  postage  prepaid,  with return receipt  requested,  shall be deemed to be
received on the third business day after so mailed,  and if delivered by courier
or facsimile to such address,  upon delivery during normal business hours on any
business day.

6.5 Captions. The captions contained in this Agreement are solely for convenient
reference and shall not be deemed to affect the meaning or interpretation of any
article, section, or paragraph hereof.



6.6 Successors and Assigns. This Agreement shall be binding upon and shall inure
to the  benefit  of and be  enforceable  by the  successors  and  assigns of the
parties hereto.

6.7  Severability.  If any term,  provision,  covenant  or  restriction  of this
Agreement is held by a court of competent  jurisdiction to be invalid,  void, or
unenforceable,   the   remainder  of  the  terms,   provisions,   covenants  and
restrictions  shall  remain  in full  force  and  effect  and shall in no way be
affected,  impaired or invalidated.  It is hereby  stipulated and declared to be
the intention of the parties that they would have executed the remaining  terms,
provisions,  covenants and restrictions  without including any of such which may
be hereafter declared invalid, void or unenforceable.

6.8  Applicable  Law.  This  Agreement  shall be governed by and  construed  and
enforced in accordance with the applicable laws of the State of Texas.

IN WITNESS WHEREOF,  the Shareholders have executed this Agreement and the other
parties  hereto  have  caused this  Agreement  to be signed in their  respective
corporate names by their respective duly authorized representatives, all on this
3rd day of April, 1997 to be effective as of the Effective Date.

                             WELLTECH EASTERN, INC.


                                      By:

                                      Name:

                                      Title:

                           DIAMOND WELL SERVICE, INC.

                                       By:

                                      Name:

                                     Title:



                                  SHAREHOLDER:





                                   John Scott



                                  SHAREHOLDER:





                                 Dwayne Wardwell


                  SCHEDULE 1.1(a) - TANGIBLE PERSONAL PROPERTY

Property.

                           SCHEDULE 1.1(b) - INVENTORY

None.

                 SCHEDULE 1.1(c) - SELLER INTELLECTUAL PROPERTY
           (Patents, Copy Rights, Trademarks, Service Marks, Licenses
                  and all applicable customer lists of Seller)


Ricks Exploration

Apache Corporation

KS Oil Co.

Huntington Energy

Chesapeake

Outback

Lance Ruffel

Triad

Shoney Oil & Gas

SND Energy

B. R. Polk

Post Oak

                           SCHEDULE 1.1(d) - CONTRACTS
    (Leases,  Subleases,  Contracts,  Contract Rights and Agreements relating to
    ownership, operation or maintenance or use of Tangible Personal Property)


None.

                        SCHEDULE 1.1(e) - SELLER PERMITS
        (Permits, Authorizations, Certificates, Approvals, Registrations,
           Variances, Waivers, Exemptions, Rights of Way, Franchises,
       Ordinances, Licenses and Rights obtained from governmental agencies
  relating to use, operation, maintenance or use of Tangible Personal Property)


Certificate of Qualification of Specialized  Mobilized  Machinery Vehicle issued
by the Oklahoma Tax Commission No. 11041.

Size and Weight  Permit  issued by the Oklahoma  Department of Public Safety No.
97006123.
                      SCHEDULE 2.1.3 - FINANCIAL STATEMENTS

                           SCHEDULE 2.1.10 - EMPLOYEES

                          Employee Social Security No.

                   Schedule 4.6 - ALLOCATION OF PURCHASE PRICE


                  Equipment                                   $ 587,500

                  Goodwill                                    $  20,000

                  Covenant not to compete                     $  67,500

                  Total                                       $675,000