Asset Purchase Agreement

                                 by and BETWEEN

                      Key Energy Services South Texas, Inc.
 
                                       and

                           TransTexas Gas Corporation

 






                                 August 17, 1998


                                                           

1.       Asset Purchase Agreement

This Asset Purchase  Agreement  (this  "Agreement") is entered into as of August
17, 1998 between Key Energy Services  South Texas, Inc., a Delaware corporation
("Buyer"),   and  TransTexas  Gas  Corporation,   a  Delaware  corporation  (the
"Seller").

                                   RECITATIONS

WHEREAS,  the Seller is currently  engaged in the business of providing  onshore
oilfield  services  through  its  Integrated  Services  Division  and its Fluids
Services  Division (such business being  collectively  referred to herein as the
"Services Divisions"); and

WHEREAS, the Seller desires to sell substantially all the assets of the Services
Divisions, and Buyer desires to acquire 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 1

                           Purchase and Sale of Assets

1.1 Purchase  and Sale of the Assets.  Subject to the terms and  conditions  set
forth in this  Agreement,  the Seller hereby agrees to sell,  convey,  transfer,
assign and deliver to Buyer effective as of 12:01 A.M. Texas time on the date of
the  execution  hereof  (the  "Closing  Date"),  all of the  assets,  rights and
interests of the Seller used,  primarily or  exclusively,  in the conduct of the
Services Divisions as the Services Divisions were conducted by the Seller before
the  Closing  Date other than the  Excluded  Assets (as  defined in Section  1.2
hereof),  whether real,  personal,  tangible or intangible,  including,  without
limitation,  the  following  assets (all such assets  being sold  hereunder  are
referred to collectively herein as the "Assets"):

(a)  all tangible personal  property owned by the Seller and used,  primarily or
     exclusively,  in the conduct of the Service  Divisions or the  operation of
     the Assets (such as rigs,  machinery,  equipment,  leasehold  improvements,
     furniture and fixtures, and vehicles),  including, without limitation, that
     which is more fully described on Schedule 1.1(a) hereto (collectively,  the
     "Tangible Personal Property");

(b)  all of the inventory,  including parts supplies and spare parts  inventory,
     owned by the Seller and used,  primarily or exclusively,  in the conduct of
     the Services  Divisions or the operation of the Assets,  including  without
     limitation,  that which is more fully  described on Schedule  1.1(b) hereto
     (collectively, the "Inventory");

(c)  all of the Seller's  intangible assets used,  primarily or exclusively,  in
     the  conduct of the  Services  Divisions  or the  operation  of the Assets,
     including  without  limitation,   (i)  the  Seller's  rights  to  the  name
     "PetroAmerican  Services Corporation" (or any name similar thereto or which
     incorporates the term "PetroAmerican")  which the Seller used, primarily or
     exclusively,  in connection  with the Services  Divisions,  (ii) all of the
     Seller's rights to any patents, patent applications, trademarks and service
     marks (including registrations and applications therefor), trade names, and
     copyrights and written  know-how,  trade secrets,  licenses and sublicenses
     and  all  other  similar  proprietary  data  and  the  goodwill  associated
     therewith  (collectively,   the  "Intellectual  Property")  used  or  held,
     primarily or  exclusively,  in the conduct of the Services  Divisions  (the
     "Seller  Intellectual  Property"),  and (iii)  the  sales  and  promotional
     literature,  computer  software,  customer and supplier lists and all other
     records of the Seller relating,  primarily or exclusively, to the Assets or
     the Services Divisions (collectively, the "Intangibles");

(d)  all of Seller's rights under those leases, subleases,  contracts,  contract
     rights  and  agreements  relating  to the  operation  of the  Assets or the
     conduct  of  the  Services  Divisions  listed  on  Schedule  1.1(d)  hereto
     (collectively, the "Contracts");

(e)  all of the permits, authorizations, certificates, approvals, registrations,
     variances,  waivers,  exemptions,  rights-of-way,  franchises,  ordinances,
     orders,   licenses   and  other   rights  of  every   kind  and   character
     (collectively, the "Permits") relating, primarily or exclusively, to all or
     any of the Assets or to the conduct of the Services Divisions to the extent
     they are  assignable,  including,  but not limited to,  those that are more
     fully  described  on  Schedule  1.1(e)  hereto  (collectively,  the "Seller
     Permits");

(f)  the goodwill associated with the Assets or the Services Divisions; and

(g)  all other or  additional  privileges,  rights,  interests,  properties  and
     assets of the Seller of every kind and  description  and  wherever  located
     that are used,  primarily  or  exclusively,  in the conduct of the Services
     Divisions or the operation of the Assets.

1.2 Excluded Assets.  The Assets shall not include the following  (collectively,
the "Excluded  Assets"):  (i) all of the Seller's  accounts  receivable  and all
other rights of the Seller to payment for services rendered by the Seller in its
conduct of the Services Divisions before the Closing Date ("Pre-Closing Accounts
Receivable"), it being understood that Seller shall bill all of its customers on
the Closing Date for services or materials provided up to that date and that (A)
Buyer will forward any payment on Pre-Closing Accounts Receivable received by it
to the Seller within ten (10) business days of receipt  thereof;  (B) the Seller
will  forward to Buyer any payment  received  by it in respect of  revenues  and
accounts  receivable  relating  to the  Assets,  which  relate  to  services  or
materials  provided on or after the Closing Date, and any such amounts shall not
be deemed  Excluded  Assets;  and (C) the Seller will  coordinate all collection
efforts in respect of Pre-Closing Accounts Receivable through Buyer and will not
directly  or  indirectly   contact  the  customers  of  the  business  regarding
Pre-Closing  Accounts  Receivable (or any other matters)  without the consent of
Buyer (which  consent will not be  unreasonably  withheld or delayed);  (ii) all
cash accounts of the Seller and all petty cash of the Seller kept on hand; (iii)
all other receivables and prepaid expenses  relating to the Services  Divisions,
including  all right,  title and  interest  of the Seller in and to any  prepaid
expenses,  bonds,  deposits and other current  assets;  (iv) the real estate and
other assets  described in Schedule 1.2 attached hereto relating to the Services
Divisions;  (v) the  corporate  minute books,  accounting  records,  files,  tax
returns and other  financial data on whatever  media,  relating to the Seller or
the Excluded Assets; (vi) the cash consideration paid or payable by Buyer to the
Seller  pursuant to Section 1.3 hereof;  (vii) all other  rights of Seller under
this  Agreement;  (viii) all rights to refunds,  rebates or credits of any taxes
for all periods prior to the Closing; (ix) all insurance policies and (x) all of
the assets and rights of Seller under all employee benefit plans and programs of
Seller.

1.3  Consideration  for Assets.  As consideration  for the sale of the Assets to
Buyer and for the other covenants and agreements of the Seller contained herein,
Buyer  agrees to pay to the Seller by wire  transfer  of  immediately  available
funds to an account  designated  by the  Seller or by  delivery  of  immediately
available funds.
(a)  on or  within 3  business  days of the  Closing  Date,  the sum of  Sixteen
     Million Seventy-Seven thousand and No/100 dollars ($16,077,000); and
(b)  an amount up to Four  Hundred  Twenty-Three  thousand  and  No/100  Dollars
     ($423,000),  upon satisfaction of the terms and conditions set forth in the
     Letter Agreement dated of even date herewith between the Seller and Buyer.

The aggregate  amounts paid by Buyer to the Seller  pursuant to this Section 1.3
shall be referred to herein as the "Purchase Price".

1.4  Liabilities.  Effective on the Closing Date,  Buyer shall assume those, and
only those,  liabilities  and obligations of the Seller to perform the Contracts
to the extent that the Contracts  have not been performed and are not in default
on the Closing Date (the "Assumed Liabilities").  On and after the Closing Date,
the Seller shall be responsible  for any and all  liabilities and obligations of
the Seller  other than the  Assumed  Liabilities  (collectively,  the  "Retained
Liabilities"),  including,  without limitation, (a) any obligations arising from
the Seller's  employment  of the  Employees  (as defined in Section 3.2 hereof),
including those  employees of the Seller listed on Schedule 3.2 hereto;  (b) any
liabilities  arising  from  or  relating  to the  Seller's  failure  to be  duly
qualified  or  licensed  to do  business  and  in  good  standing  as a  foreign
corporation in all  jurisdictions in which the character of the properties owned
or  the  nature  of the  business  conducted  by  the  Seller  would  make  such
qualification or licensing  necessary;  (c) any failure to pay any taxes owed by
the Seller which are  applicable to the period ending with the Closing Date; (d)
any liability  for  commissions  or other fees payable to brokers,  attorneys or
others;  (e) all  liabilities  and  obligations  relating to,  resulting from or
arising out of any and all businesses,  assets, properties, rights and interests
that are not being acquired by Buyer hereunder, including without limitation the
Excluded Assets,  whether such liabilities or obligations  arose before or after
the Closing  Date;  and (f) any other  liabilities  resulting  from the Seller's
operation  of the  Assets or  conduct of the  Services  Divisions  or any of its
businesses before the Closing Date, including all liabilities and obligations of
the Seller in connection with accounts payable as of the Closing Date.

1.5 Closing.  The closing of the purchase and sale provided for  hereunder  (the
"Closing") shall take place on the Closing Date at the offices of TransTexas Gas
Corporation,  1300 N. Sam  Houston  Parkway  East,  Suite  310,  Houston,  Texas
77032-2949.

1.6 Closing Deliveries. At the Closing, Buyer and the Seller will deliver to one
another the documents described below:

1.6.1.  Certificate  of  Secretary of the Seller.  The Seller  shall  deliver an
originally executed Certificate of its Secretary certifying that (i) the Company
has been duly incorporated,  and is validly existing and in good standing in the
State of Delaware,  as evidenced by a good  standing  certificate  issued by the
Secretary of State of the State of Delaware attached thereto;  (ii) the Articles
of  Incorporation  (as  certified  as by the  Secretary of State of the State of
Delaware) and By-laws of the Company,  copies of each of which shall be attached
thereto,  are true and complete copies of each as of the Closing Date;  (iii) an
annex of the board resolutions authorizing the transactions contemplated by this
Agreement  and  attached  thereto were duly adopted and have not been amended or
rescinded;  and (iv) the officers of the Company whose  signatures are set forth
on such  Certificate,  one or more of whom will execute the  Agreement  and such
other documents contemplated thereby on behalf of the Company, are duly elected,
qualified and incumbent as of the Closing Date,  and that the signatures of each
are genuine.

1.6.2.  Bill  of  Sale.  Buyer  and  the  Seller  shall  execute  a Bill of Sale
transferring  the Assets to Buyer and such other  instruments of transfer as are
necessary  to  transfer  the  Assets to Buyer,  all of which  shall be in a form
mutually acceptable to the Seller and Buyer.

1.6.3.  Instrument  of  Assumption.  Buyer  and  the  Seller  shall  execute  an
Instrument of  Assumption,  which shall be in a form mutually  acceptable to the
Seller and Buyer, pursuant to which Buyer will assume the Assumed Liabilities.

1.6.4.  Opinion of  Seller's  Counsel.  Buyer  shall have  received a  favorable
opinion,  dated as of the Closing Date, from Gardere & Wynne, L.L.P., counsel to
the Seller,  in a form and substance  satisfactory  to Buyer, to the effect that
(i)  the  Seller  has  been  duly  incorporated  and is  validly  existing  as a
corporation  in good  standing  under the laws of the State of  Delaware  and is
qualified to do business in the State of Texas; (ii) all proceedings required to
be taken by or on the part of the  Seller to  authorize  the  execution  of this
Agreement,  the other  agreements and instruments to be entered into between the
Seller and Buyer contemplated hereby (collectively, the "Other Agreements"), and
the consummation of the transactions  contemplated  hereby and thereby have been
taken;  (iii) the  compliance  by the Seller with all of the  provisions of this
Agreement and the Other Agreements and the transactions  contemplated hereby and
thereby  will  not  result  in a  breach  or  violation  of any of the  terms or
provisions of, or constitute a default under, any indenture,  mortgage,  deed of
trust, loan agreement, or other agreement or instrument to which the Seller is a
party or by which  the  Seller  is bound or to which  any of the  Assets  of the
Seller are subject;  and (iv) this Agreement and the Other  Agreements have been
duly executed and delivered by, and are the legal,  valid and binding obligation
of the Seller,  and are enforceable  against the Seller in accordance with their
respective terms,  except as the  enforceability may be limited by (a) equitable
principles   of   general   applicability   or   (b)   bankruptcy,   insolvency,
reorganization,  fraudulent  conveyance or similar laws  affecting the rights of
creditors generally.  In rendering such opinion,  such counsel may rely upon (x)
certificates of public officials and of officers of the Seller as to the matters
of fact and (y) the opinion or opinions of other  counsel,  which opinions shall
be reasonably  satisfactory  to Buyer, as to matters other than federal or Texas
law.

1.6.5  Officer's  Certificate.  Seller  shall  deliver  an  originally  executed
Certificate  of one of its Vice  Presidents  or its President to the effect that
(i) this Agreement and all other  agreements to be entered into by Buyer and the
Seller do not conflict  with,  or result in a breach or violation of, any of the
terms or provisions of, or constitute a default under, any indenture,  mortgage,
deed of trust, loan agreement or other material agreement or instrument to which
the Seller or its affiliates is a party or by which the Seller or its affiliates
or the Assets are bound; and (ii) the Seller is qualified to do business in each
jurisdiction in which the operations of the Services Divisions requires it to be
qualified to do business.

 
                                   ARTICLE II

                         Representations and Warranties

2.1  Representations  and  Warranties of the Seller.  The Seller  represents and
warrants to Buyer as follows:

2.1.1  Organization  and  Good  Standing.  The  Seller  is  a  corporation  duly
organized,  validly existing and in good standing under the laws of the State of
Delaware,  is  qualified  to do business in the State of Texas and in each other
state  in which  the  nature  and  conduct  of its  business  requires  it to be
qualified to do business,  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.

2.1.2 Agreement  Authorized and Effect on Other  Obligations.  The execution and
delivery  of this  Agreement  and all  instruments  to be executed by the Seller
hereunder  and all  transactions  contemplated  to be entered into by the Seller
hereby have been  authorized by all necessary  corporate,  shareholder and other
action on the part of the Seller,  and this Agreement and all  instruments to be
executed by the Seller  hereunder are the valid and binding  obligations  of the
Seller enforceable  (subject to normal equitable  principles) 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 all
instruments to be executed by the Seller  hereunder and the  consummation of the
transactions  contemplated  hereby and thereby,  will not (i)  conflict  with or
result in a violation  or breach of any term or provision  of, nor  constitute a
default  under  (A)  the  Certificate  of  Incorporation  or  Bylaws  (or  other
organizational  documents)  of  the  Seller,  (B)  any  obligation,   indenture,
mortgage,  deed of trust, lease, contract or other agreement to which the Seller
is a party or by which the Seller or its respective properties are bound, or (C)
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 the Seller or its
properties  are  subject;  (ii)  result in the  creation  or  imposition  of any
Encumbrance (as defined in Section 2.1.4 hereof) on any of the Assets;  or (iii)
constitute  a breach of,  default  under,  result in the  termination,  right of
termination or cancellation  of, or accelerate the performance  required by, any
of the Contracts.

2.1.3  Contracts.  Schedule  1.1(d)  hereto  sets forth a  complete  list of all
contracts,  including  leases under which the Seller is lessor or lessee,  which
relate to the Assets or the conduct of the Services  Divisions  and which are to
be performed in whole or in part on or after the date hereof.  In addition,  (a)
all of the  Contracts  are in full force and effect,  and  constitute  valid and
binding  obligations of the Seller,  (b) the Seller is not, and to the knowledge
of the Seller no other party to any of the Contracts 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,  (c) no
Contract has been entered  into on terms which could  reasonably  be expected to
have an adverse effect on the use of the Assets by Buyer, (d) the Seller has not
received any information  which would cause any of such parties to conclude that
any  customer  of the Seller will (or is likely to) cease  doing  business  with
Buyer (or its successors) as a result of the  consummation  of the  transactions
contemplated hereby.

2.1.4 Title to Assets.  Except as set forth in Schedule 2.1.4 hereto, the Seller
has good, indefeasible and marketable title to all of the Assets, free and clear
of any Encumbrances (defined below). All of the Assets conform to all applicable
laws  governing  their use, and no notice of any violation of any law,  statute,
ordinance or  regulation  relating to any of the Assets has been received by the
Seller,  except such as have been fully complied  with. The term  "Encumbrances"
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, taxes, privileges, equities,
easements,  rights of way,  limitations,  reservations,  restrictions  and other
encumbrances  of any kind or  nature  except  for  statutory  liens  for  taxes,
assessments, governmental charges or levies, or claims of materialmen, carriers,
landlords  and like  persons,  all of which are not yet due and payable and have
not attached.

2.1.5 Licenses and Permits. Schedule 1.1(e) hereto sets forth a complete list of
all Permits necessary under law or otherwise for the operation,  maintenance and
use of the Assets in the manner in which the Assets  were  operated,  maintained
and used before the date  hereof;  each of the Seller  Permits and the  Seller=s
rights with respect thereto is valid and  subsisting,  in full force and effect,
and  enforceable  by the Seller;  the Seller is in  compliance  in all  material
respects  with  the  terms of each of the  Seller  Permits;  none of the  Seller
Permits have been, or are  threatened  to be,  revoked,  canceled,  suspended or
modified.

2.1.6 Intellectual  Property.  Schedule 1.1(c) hereto sets forth a complete list
of all Intellectual  Property material or necessary for the continued use of the
Assets; the Seller Intellectual Property is owned or licensed by the Seller free
and clear of any  Encumbrances;  the Seller has not granted to any other  person
any license to use any the Seller  Intellectual  Property  and use of the Seller
Intellectual  Property by Buyer in the manner used by Seller  before the Closing
will not infringe,  misappropriate  or conflict with the  Intellectual  Property
rights of  others.  The  Seller has not  received  any  notice of  infringement,
misappropriation or conflict with the Intellectual  Property rights of others in
connection with the use by the Seller of the Seller Intellectual Property.


2.1.7 Absence of Certain Changes and Events.  Since May 28, 1998,  there has not
been:

(a)  Financial Change.  Any adverse change in the Assets, the Services Divisions
     or the  financial  condition,  operations  or  liabilities  of  the  Seller
     relating to the Services Divisions;

(b)  Property Damage. Any damage,  destruction,  or loss to any of the Assets or
     the Services Divisions (whether or not covered by insurance);

(c)  Waiver.  Any waiver or release of a material  right of or claim held by the
     Seller not purported to be transferred hereunder;

(d)  Change in Assets.  Any  acquisition,  disposition,  transfer,  encumbrance,
     mortgage, pledge or other encumbrance of any of the Asset other than in the
     ordinary course of business;

(e)  Labor Disputes. Any labor disputes between the Seller and its employees who
     work in the Services Divisions; or

(f)  Other  Changes.  Any other  event or  condition  known to the  Seller  that
     particularly  pertains  to and has or might have an  adverse  effect on the
     Assets or the operations of Services Divisions.

2.1.8 Necessary Consents. Except for the Seller Permits, the 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,  without limitation,
the Contracts.

2.1.9 Environmental Matters.

(a)  The  Seller  is and  has  been  in  compliance  in all  respects  with  all
     applicable Environmental Laws (as defined below) relating to the Assets, or
     any operations  conducted by the Seller utilizing the Assets, the violation
     of which would create any liabilities or obligations for Buyer.  The Seller
     has obtained and is and has been in compliance with all permits relating to
     any operations  conducted by the Seller utilizing the Assets required under
     applicable Environmental Laws. There is no past or present event, condition
     or  circumstance  that  will  interfere  with the use of the  Assets or the
     operations  of Buyer  utilizing the Assets (as such Assets were operated by
     the Services  Divisions)  or which would  interfere in any respect with the
     Buyer's compliance with Environmental Laws in connection with the Assets or
     the operations utilizing the Assets or constitute a violation thereof.

(b)  The Assets  are not  subject  to any  actual  or, to the  knowledge  of the
     Seller, potential action, claim, investigation,  review or other proceeding
     by any third  party or before  any  governmental  entity or  authority  (or
     subdivision thereof) under or based upon any Environmental Law.

(c)  The  facilities  and property  included in the Assets and the operations of
     the Services Division have been operated in substantial compliance with all
     applicable  Environmental  Laws  and  are not  (and  would  not be,  if all
     relevant  facts  were  known  to  any  applicable  governmental  entity  or
     authority  (or  subdivision  thereof))  subject to any  removal,  clean-up,
     remediation,  restoration,  reporting,  notification,  closure, recordation
     obligations  under such laws.  There are not, and there have not been,  any
     underground  or  above-ground  storage  tanks or pits on the real  property
     included  in the Assets that  require  (and would  require if all  relevant
     facts were known to any applicable any governmental entity or authority (or
     subdivision   thereof))  removal,   clean-up,   remediation,   restoration,
     reporting, notification, closure, recordation, or any other action.

(d)  There are no  environmental  conditions  or  circumstances,  including  the
     presence or release of any Hazardous  Materials (as defined below),  on any
     property  presently or previously owned or leased by the Seller,  or on any
     property on which Hazardous  Materials generated by the Seller=s operations
     or the use of the Assets were disposed of, which would result in an adverse
     change in the Assets or which would result in a claim against Buyer.

(e)  The  Seller  has  provided  to  Buyer  true  and  correct   copies  of  all
     environmental  audits,  assessments  or other  reports  relating to (i) the
     Assets or operations conducted by the Seller utilizing the Assets, and (ii)
     compliance   by  the  Seller  with,  or  liability  of  the  Seller  under,
     Environmental  Laws  in  connection  with  the  Assets  or  the  operations
     conducted by the Seller utilizing the Assets.

(f)  The  term  "Environmental  Law"  means  any and all  laws,  rules,  orders,
     regulations,  statutes,  ordinances,  codes,  decrees,  and  other  legally
     enforceable requirements (including, without limitation, common law) of the
     United States,  or any state,  regional,  city,  local,  municipal or other
     governmental   authority  or  quasi-governmental   authority,   regulating,
     relating  to, or imposing  environmental  standards  of conduct  concerning
     protection  of the  environment  or human  health,  or employee  health and
     safety  as from  time to  time  has  been  or is now in  effect.  The  term
     "Hazardous Materials" means (x) asbestos,  polychlorinated  biphenyls, urea
     formaldehyde,  lead based paint,  radon gas,  petroleum,  oil, solid waste,
     pollutants and contaminants,  and (y) any chemicals,  materials,  wastes or
     substances that are defined,  regulated,  determined or identified as toxic
     or hazardous in any Environmental Law.

2.1.10 No ERISA Plans or Labor Issues. No employee benefit plan,  program or pay
practice of the Seller, whether or not subject to any provisions of the Employee
Retirement  Income  Security  Act of  1974,  as  amended,  will by its  terms or
applicable   law,   become   binding  upon  or  an   obligation,   liability  or
responsibility of Buyer,  financial or otherwise;  the Seller has not engaged in
any unfair labor  practices which will result in an adverse effect on the Assets
or a claim against Buyer; and there are no labor disputes, pending or threatened
by any employee of the Seller  listed on Schedule 3.2 or any former  employee of
the Services Divisions. The Seller has no knowledge of any organizational effort
presently  being made or threatened on behalf of any labor union with respect to
the  employees  listed on  Schedule  3.2  hereto or any former  employee  of the
Services Divisions.
 
2.1.11   Investigations;   Litigation.   No   investigation  or  review  by  any
governmental entity with respect to any of the transactions contemplated by this
Agreement is pending or threatened, nor has any governmental entity indicated to
the Seller an intention to conduct the same;  and, there is no civil or criminal
suit,  action,  or legal,  administrative,  arbitration  or other  proceeding or
governmental investigation pending, threatened or unasserted to which the Seller
is or would be a party or any other  unasserted  claims against the Seller which
would have an adverse  effect on any of the Assets or result in a claim  against
Buyer.

2.1.12 Solvency.  The Seller is not presently insolvent,  nor will the Seller be
rendered  insolvent by the occurrence of the  transactions  contemplated by this
Agreement.  The term Ainsolvent,@ with respect to the Seller, means that the sum
of the present fair and saleable value of the 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  Finder's  Fee.  All  negotiations  relative  to this  Agreement  and the
transactions contemplated hereby have been carried on by the Seller, Jefferies &
Co.,  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 Buyer for a brokerage commission, finder=s fee, financial advisory
fee or any  similar  payment.  The  Seller  shall pay all fees  associated  with
Jefferies & Co. and Buyer shall have no liabilities or obligations therefor.

2.1.14 Taxes. All federal,  state and local taxes assessed or assessable against
the Assets for periods prior to January 1, 1998 have been paid by the Seller and
the Assets  will be conveyed to Buyer free and clear of any such taxes or claims
therefor.  All taxes  assessed  against  the Assets  for the  period  commencing
January  1,  1998 will be  prorated  through  the  Closing  Date  (based on 1997
assessed  values) with the Seller  paying to Buyer at Closing an amount equal to
the portion of such taxes  applicable to the period between  January 1, 1998 and
the Closing Date.
 
2.1.15  Equipment and Inventory.  Buyer  acknowledges  that, as to condition and
quality of the equipment and inventory, it will take the equipment and Inventory
to be sold,  transferred and conveyed to it hereunder "as is" and "where is" and
that the Seller makes no representation or warranty, expressed or implied, as to
freedom from defects or as to the  merchantibility or fitness for any particular
purpose of the equipment or the Inventory.

2.2  Representations  and Warranties of Buyer.  Buyer represents and warrants to
the Seller as follows:

2.2.1  Organization  and Good Standing.  Buyer is a corporation  duly organized,
validly  existing and in good standing  under the laws of the State of Delaware,
has full requisite  corporate  power and authority to carry on its businesses 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 businesses and is in
good standing as a foreign corporation authorized to do business in the State of
Texas.

2.2.2 Agreement Authorized and its Effect on Other Obligations. The consummation
of the transactions contemplated hereby have been duly and validly authorized by
all necessary  corporate  action on the part of Buyer,  and this  Agreement is a
valid and binding  obligation of Buyer enforceable  (subject to normal equitable
principles)  in  accordance  with its  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 by Buyer will not  conflict  with or result in a
violation or breach of any term or provision  of, or  constitute a default under
(a) the Certificate of  Incorporation  or Bylaws of Buyer or (b) any obligation,
indenture,  mortgage, deed of trust, lease, contract or other agreement to which
Buyer or any of its property is bound.

2.2.3  Consents and  Approvals.  No consent,  approval or  authorization  of, or
filing of a registration with, any governmental or regulatory authority,  or any
other person or entity is required to be made or obtained by Buyer in connection
with  the   execution,   delivery  or  performance  of  this  Agreement  or  the
consummation of the transactions contemplated hereby.

2.2.4  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 the  Seller,  Jefferies  & Co.  and their  counsel,  without  the
intervention  by any other  person  as the  result of any act of Buyer in such a
manner as to give rise to any valid claim  against the Seller for any  brokerage
commission, finder's fee, financial advisory fee or any similar payments.

2.3   Survival  of   Representations   and   Warranties.   Notwithstanding   any
investigation   made  on  the  part  of  the  parties  hereto,   the  respective
representations and warranties of the parties contained herein shall survive for
a period of one year following the Closing Date, except for the  representations
and warranties set forth in Sections  2.1.4,  2.1.10,  2.1.11 and 2.1.14 hereof,
which shall survive for the applicable  statute of limitations  period therefor,
and except for the  representations  and  warranties  set forth in Section 2.1.9
hereof which shall survive for a period of two years following the Closing Date,
provided  that  there  shall  be no  expiration  of any such  representation  or
warranty  with respect to any bona fide claim that has been  asserted by written
notice  of  such  claim   delivered   to  the  party  or  parties   making  such
representation or warranty during the applicable survival period. 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
notwithstanding  any investigation  made on the part of the parties hereto shall
also survive for a period of one year  following the Closing Date except for the
representations and warranties set forth in any certificate,  schedule,  exhibit
or other  instrument  relating to the subject matter of Sections 2.1.4,  2.1.10,
2.1.11 and 2.1.14  hereof,  which shall  survive for the  applicable  statute of
limitations period therefor,  and except for the  representations and warranties
set forth in any certificate,  schedule, exhibit or other instrument relating to
the subject  matter of Section  2.1.9 hereof which shall survive for a period of
two years  following the Closing Date.  This Section 2.3 shall not, at any time,
relieve  any  party  hereto  from the  performance  of such  party's  covenants,
agreements and undertakings set forth in this Agreement,  which shall survive as
provided herein.

2.4 Remedy for Breach of  Representations  and Warranties.  The exclusive remedy
for any breach by a party of the  representations  and  warranties  contained in
Section 2.1 and 2.2 hereof shall be as set forth in Article IV hereof.


                                   ARTICLE III

                              Additional Agreements

3.1  Noncompetition.  Except as set forth below or as otherwise  consented to or
approved in writing by Buyer,  the Seller  agrees that for a period of 48 months
following the Closing Date, it will not, directly or indirectly, acting alone or
as a member of a partnership or as a consultant, representative, advisor, lender
(including  gifts  used for  capitalization  or  collateral),  a holder  of,  or
investor  in as much as 3% of any  security of any class of any  corporation  or
other  business  entity  (a)  engage in any  business  in  competition  with the
operations  engaged in by the Seller  through the  Services  Divisions  within a
territory  defined as the Texas Railroad  Commission  Districts 1 through 6, but
excluding the area east of Highway 288 and south of  Interstate  10, (b) request
any present  customers or  suppliers of the Seller or any  customers of Buyer or
any  affiliate  of Buyer to  curtail  or cancel  their  business  with Buyer (or
Buyer=s affiliates);  (c) disclose to any person, firm or corporation any trade,
technical or technological  secrets of the operations of the Services Divisions,
Buyer or any  affiliate  of Buyer or any  non-public  details of their  business
affairs; or (d) seek out and actively attempt to influence any employee of Buyer
or any affiliate of Buyer to terminate his or her employment.  The Seller agrees
that if  either  the  length of time or  geographical  area as set forth in this
Section 3.1 is deemed too  restrictive  in any court  proceeding,  the court may
reduce  such   restrictions  to  those  which  it  deems  reasonable  under  the
circumstances (and any monetary damages for a violation of such restrictions and
breach  of the  court-altered  provisions  hereof  shall  run from the date such
violation began). The obligations  expressed in this Section 3.1 are in addition
to any other  obligations  that the  Seller may have under the laws of any state
requiring  a  corporation   selling  its  assets  (or  a  shareholder   of  such
corporation) to limit its activities so that the goodwill and business relations
being transferred with such assets will not be materially  impaired.  The Seller
further agrees and  acknowledges  that Buyer and affiliates of Buyer do not have
any adequate remedy at law for the breach or threatened  breach by the Seller of
the  covenants  contained  in this  Section  3.1,  and agree that  Buyer  and/or
affiliates  of Buyer  may,  in  addition  to the  other  remedies  which  may be
available  to them  hereunder,  file a suit in equity to enjoin the Seller  from
such breach or threatened breach. If any provisions of this Section 3.1 are held
to be invalid or against public policy,  the remaining  provisions  shall not be
affected thereby.  The Seller  acknowledges that the covenants set forth in this
Section 3.1 are being executed and delivered by such party in  consideration  of
(i) the  covenants  of  Buyer  contained  in  this  Agreement,  (ii)  additional
consideration  in the amount of $500,000  payable by Buyer on the date hereof by
wire transfer of immediately  available funds to the Seller, on the Closing Date
or within 3  business  days of the  Closing  Date,  and (iii) for other good and
valuable   consideration,   the  receipt   and   adequacy  of  which  is  hereby
acknowledged.

3.2 Hiring Employees.  Schedule 3.2 hereto is a complete and accurate listing of
all  employees of the Seller who devote their full time in the  operation of the
Assets  (the  "Employees"),  together  with  each  Employee's  pay  rate and job
description.  Effective as of the Closing Date,  those Employees which Buyer, in
its sole  discretion,  determines  to be  necessary  to  continue to operate the
Assets as Buyer deems appropriate,  will be offered employment by Buyer, subject
to such Employees meeting Buyer=s standard employment eligibility  requirements.
Buyer  shall have no  liability  or  obligation  with  respect  to any  employee
benefits of any Employees  except those  benefits  that accrue  pursuant to such
Employees=  employment with Buyer on or after the Closing Date. The Seller shall
cooperate  with Buyer in connection  with any offer of employment  from Buyer to
the Employees and use reasonable  efforts to cause the acceptance of any and all
such offers.

3.3  Allocation  of Purchase  Price.  The parties  hereto  agree to allocate the
Purchase  Price  payable  by Buyer  for the  Assets  hereunder  as set  forth on
Schedule 3.3 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.

3.4 Publicity; Non-disclosure. The Seller and Buyer agree that each of Buyer and
the  Seller  will  be  authorized  to  issue  a  press  release  announcing  the
consummation of the  transactions  contemplated  by this  Agreement,  subject to
prior  review  and  approval  of the  other  party.  Except as  provided  in the
preceding sentence, Buyer and the Seller will not issue any publication or press
release,  or disclose to any third party (except for their respective  advisors,
counsel and other agents,  provided that Buyer and the Seller will remain liable
for any  disclosures  in  violation  of the  provisions  of this Section by such
persons)  the  existence  or  provisions  of this  Agreement,  the  transactions
contemplated hereby or the negotiations  preceding the execution hereof,  except
as may be required by (i) applicable law, including  disclosures required by the
securities  laws,  (ii) an order of a court or  governmental  or  administrative
body, or (iii) obligations pursuant to any listing agreement with any securities
exchange or securities exchange regulation.

3.5 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  reasonable  necessary to
effect the transactions contemplated hereby.


                                   ARTICLE IV

                                 Indemnification

4.1  Indemnification  by the Seller. In addition to any other remedies available
to  Buyer  under  this  Agreement,  or at law or in  equity,  the  Seller  shall
indemnify,  defend  and  hold  harmless  Buyer  and  its  officers,   directors,
employees,  agents  and  stockholders  (collectively,   the  ABuyer  Indemnified
Parties@),  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@) a Buyer Indemnified Party shall incur
or  suffer  (whether  the  damages  are  suffered  or  incurred  by  such  Buyer
Indemnified  Party  directly or as a result of a third party claim  against such
Buyer  Indemnified  Party),  which  arise or result  from (a) any  breach of, or
failure by the Seller to perform, its representations,  warranties, covenants or
agreements in this Agreement or in any schedule,  certificate,  exhibit or other
instrument furnished or delivered to Buyer by the Seller under this Agreement or
(b) the Seller's failure to satisfy the Retained Liabilities.

4.2 Indemnification by Buyer. In addition to any other remedies available to the
Seller  under this  Agreement,  or at law or in equity,  Buyer shall  indemnify,
defend and hold  harmless  the Seller and its  officers,  directors,  employees,
agents and  stockholders  against and with  respect to any and all Damages  that
such  indemnitees  shall  incur or suffer,  which  arise or result  from (a) 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 the Seller by
or on behalf of Buyer under this  Agreement,  (b) Buyer's failure to satisfy the
Assumed  Liabilities,  or (c) all  liabilities  and  obligations  resulting from
Buyer's  operation of the Assets or the conduct of the Services  Divisions after
the Closing Date except to the extent such Damages  result from or relate to (x)
any  breach  of, or  failure  by the  Seller  to  perform  its  representations,
warranties,  covenants  or  agreements  in this  Agreement  or in any  schedule,
certificate,  exhibit or other instrument furnished or delivered to Buyer by the
Seller under this Agreement or (y) the Seller's  failure to satisfy the Retained
Liabilities.

4.3 Limitations on Indemnification. With respect to Damages that arise or result
from or relate to the matters  referred to in Section  4.1(a) and 4.2(a)  hereof
(collectively,  the  "Capped  Damages"),  neither  the Seller nor Buyer shall be
obligated  to pay any  amounts  for  indemnification  under  Article  IV of this
Agreement  for any Capped  Damages  until the  aggregate  of all Capped  Damages
actually  incurred  by the  indemnified  party  equals  $50,000,  whereupon  the
indemnifying  party  shall  be  obligated  to pay any  Capped  Damages  actually
incurred by the  indemnified  party in excess of $50,000,  but in no event shall
the  indemnifying  party be liable for an aggregate  amount of Capped Damages in
excess of the Maximum  Amount (as  defined  here).  With  respect to the matters
referred to in Sections 4.1(b), 4.2(b) and 4.2(c) hereof, the indemnifying party
shall  be  obligated  to  pay  any  and  all  Damages  actually  incurred  by an
indemnified  party up to the full amount thereof.  As used herein,  the "Maximum
Amount" shall mean,  with respect to an  indemnifying  party, an amount equal to
$20,500,000 less any damages actually paid by such indemnifying  party as of the
date such  indemnification is sought pursuant to the indemnification  provisions
of the  Purchase  and Sale  Agreement  relating to certain  real  property to be
purchased by Buyer,  dated an even date herewith,  by and between the Seller and
Buyer.

4.4  Indemnification  Procedure.  If any party  hereto  discovers  or  otherwise
becomes  aware of an  indemnification  claim arising under Section 4.1 or 4.2 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 an indemnified  party to give notice as provided herein shall not
relieve the  indemnifying  party of any  obligation  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 third party  action or  proceeding  against such  indemnified  party with
respect  to  which a claim  for  indemnification  may be made  pursuant  to this
Article IV, 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 third party action; provided,  however, that the failure of
an  indemnified  party to give notice as provided  herein  shall not relieve the
indemnifying  party of any obligation  hereunder to the extent the  indemnifying
party is not materially  prejudiced thereby. In case any such third party 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 third party claim and to employ counsel
reasonably  satisfactory to such indemnified  person. An indemnifying  party who
elects not to assume the  defense of a third party 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 third
party  claim or with  respect to third  party  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 third party
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 third party
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 third party  claimant or plaintiff
to such  indemnified  party of a release from all liability with respect to such
third party claim.  No indemnified  party shall consent to entry of any judgment
or enter into any  settlement  of any such third  party  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, delayed or
continued.

                                    ARTICLE V

                                  Miscellaneous

5.1 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.

5.2  Counterparts.  Any number of counterparts of this Agreement may be executed
and each such counterpart shall be deemed to be an original instrument,  but all
such counterparts together shall constitute but one instrument.

5.3 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 a copy to:
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Key Energy Services  South Texas, Inc.       Key Energy Group, Inc.
C/o Key Energy Group, Inc.                    Two Tower Center, 20th Floor
Two Tower Center, 20th Floor                  East Brunswick, New Jersey 08816
East Brunswick, New Jersey 08816              Attn: General Counsel
Facsimile:  (732) 247-5148                    Facsimile:  (732) 247-5148
Attention:  President
- --------------------------------------------------------------------------------
 
                                If to the Seller

- --------------------------------------------------------------------------------
Addressed to:
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------

Trans Texas Gas Corporation
1300 N. Sam Houston Pkwy. East, Suite 310
Houston, Texas  77032-2949
Attn:  Arnold Brackenridge, President
Facsimile: (281) 986-8877
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


- --------------------------------------------------------------------------------
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 fifth (5th) businesses day after so mailed,  and if delivered by
courier or facsimile to such  address,  upon delivery  during normal  businesses
hours on any businesses day.

5.4 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.

5.5 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.  No assignment of this Agreement or of any rights or obligations
hereunder  may be made by either  the  Seller or Buyer (by  operation  of law or
otherwise) without the prior written consent of the other parties hereto and any
attempted  assignment  without the required  consents  shall be void;  provided,
however,  that Seller or Buyer may assign this  Agreement  and any or all rights
and obligations hereunder,  in whole or in part, to any of its affiliates.  Upon
such permitted  assignment,  the references in this Agreement to Seller or Buyer
shall also apply to any such assignee unless the context otherwise requires.

5.6  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.

4.7  Applicable  Law.  This  Agreement  shall be governed by and  construed  and
enforced  in  accordance  with  the  applicable  laws  of  the  State  of  Texas
(regardless  of the laws  that  might  be  otherwise  be  applicable  under  its
conflicts of law principles).



IN WITNESS WHEREOF,  each of the parties hereto have caused this Agreement to be
executed in their respective corporate names by their respective duly authorized
representatives, all as of the day and year first above written.

BUYER:

KEY ENERGY SERVICES SOUTH
TEXAS, INC.


By:                                                           
Name:
Title:

SELLER:

TRANSTEXAS GAS CORPORATION


By:                                                           
Name:
Title: