EXHIBIT 2.1

  PURCHASE AND SALE AGREEMENT


       THIS AGREEMENT, dated as of February 1, 1995 is between PENNZOIL
  EXPLORATION AND PRODUCTION COMPANY, a Delaware corporation (hereinafter
  referred to as "Seller"), with offices at 700 Milam, Houston, Texas  77002,
  and MAYNARD OIL COMPANY, a Delaware corporation (hereinafter referred to as
  "Buyer") with offices at 8080 North Central Expressway, Suite 660, Dallas,
  Texas 75206.

       WHEREAS, Seller desires to sell, and Buyer desires to purchase, upon and
  subject to the terms and conditions hereinafter set forth, Seller's interest
  in and to those properties described on Exhibit "A" attached hereto, being
  (i) all of Seller's right, title and interest in the oil and gas leases,
  mineral interests, royalty interests, or overriding royalty interests
  including a like interest in all formations, depths and unit rights described
  on Exhibit "A" insofar and only insofar as described therein (the "Leases"),
  (ii) all of Seller's right, title and interest in all wells (known or
  unknown, plugged or unplugged), equipment, materials, fixtures and facilities
  and other personal property used or useful in connection with the production,
  gathering, storing, measuring, treating, operating, maintaining, marketing or
  transportation of production from the Leases or lands pooled or unitized
  therewith, but excluding those items expressly set out on Exhibit "A" which
  are to be retained by Seller (the "Equipment"), (iii) all of Seller's right,
  title and interest in all contracts and contractual rights insofar and only
  insofar as they relate to the Leases and Equipment including without
  limitation, unit agreements, surface leases, oil and gas leases and/or
  subleases and assignments, mineral deeds, royalty deeds, operating
  agreements, easements, right of ways, farmout and farmin agreements, and all
  similar rights leased or owned by Seller, and oil and gas sales, purchase,
  exchange and processing contracts and agreements, whether of record or not
  (the "Contracts").  Seller's interest in the Leases, Equipment and Contracts
  shall hereinafter together be called the "Interests". 

       THEREFORE, in consideration of the above recitals and of the covenants
  and agreements herein contained, Seller and Buyer agree as follows:

       1.  SALE AND PURCHASE.  Subject to and upon all of the terms and
  conditions hereinafter set forth, Seller shall sell, transfer, assign, convey
  and deliver the Interests to Buyer, and Buyer shall purchase, receive, pay
  for and accept the Interests from Seller, effective January 1, 1995 at 7
  a.m., local time, said time to be determined for each locality in which the
  Interests are located in accordance with the time generally observed in said
  locality (the "Effective Time").  

       2.   SALE PRICE.  (a)  The sale price for the Interests shall be
  $11,300,000.00 ("Sale Price"), subject only to any applicable price
  adjustment as provided for hereinbelow.  

            (b)  Upon execution of this Agreement, Buyer shall pay to Seller an
  earnest money deposit ("Earnest Money") in the amount of $1,130,000.00. In
  the event that the Closing (as hereinafter defined) does not occur, the
  Earnest Money shall be refunded to Buyer without interest, unless such
  Closing fails to occur as a result of Buyer's breach of any material term of
  this Agreement.  Otherwise, the Earnest Money shall be credited against the
  Sale Price at Closing. 

       3.  ALLOCATED VALUES.  Buyer and Seller herein agree upon the allocation
  of the Sale Price among the Interests (the "Allocated Value").  Such
  Allocated Values are made a part of this Agreement and are shown on Exhibit
  "A.2" which is attached hereto.

       4.  SELLER'S REPRESENTATIONS.  Seller represents and warrants to Buyer
  that as of the Closing Date:

            (a)  Seller is a duly organized corporation validly existing and in
  good standing under the laws of the State of Delaware, is duly qualified to
  carry on its business in the state in which the Interests are located, has
  full power and authority to enter into and perform under this Agreement
  according to its terms and this Agreement has been duly executed and
  delivered by each Seller and constitutes a legal, valid, and binding
  obligation on it, enforceable against it in accordance with its terms;

            (b)  Seller's execution, delivery and performance of this Agreement
  has been duly authorized by all necessary corporate action and will not
  violate or conflict with any agreement, law, rule, regulation, charter, or
  other instruments governing either Seller's organization, management,
  business affairs or instrument to which Seller is a party or is bound; and

            (c)  Seller shall have disclosed all material known third party
  claims or demands ("Claims")  with regard to the Interests.  For purposes of
  this representation, the term Claims shall be deemed to mean those claims,
  which would affect the aggregate of the Allocated Values associated with the
  Interests in excess of $150,000.00.

       5.  BUYER'S REPRESENTATIONS.  Buyer represents and warrants to Seller
  that as of the Closing Date:

            (a)  Buyer is a duly organized corporation validly existing and in
  good standing under the laws of the State of Delaware, is duly qualified to
  carry on its business in the state in which the Interests are located, has
  full power and authority to enter into and perform under this Agreement
  according to its terms, and this Agreement has been duly executed and
  delivered by Buyer and constitutes a legal, valid, and binding obligation on
  it, enforceable against it in accordance with its terms.

            (b)  Buyer's execution, delivery and performance of this Agreement
  has been duly authorized by all necessary corporate action and will not
  conflict with or violate any agreement, law, rule, regulation, ordinance,
  charter or other instruments governing either Buyer's organization,
  management, business affairs or instrument to which Buyer is a party or by
  which Buyer is bound.

       6.  ACCESS TO RECORDS.  After execution of this Agreement, Seller shall
  give Buyer and its authorized representatives, during regular business hours,
  at Buyer's sole risk, cost and expense, access, with copying privileges, to
  all raw geological, geophysical, production, engineering and other technical
  data and records, and to all contract, land, title and lease records, to the
  extent such data and records are in Seller's possession and relate to the
  Interests and such other information relating to the Interests as Buyer may
  reasonably request; provided, however, Seller shall have no obligation to
  provide Buyer such access to any data or information which Seller considers
  proprietary or confidential to it or to which access Seller cannot legally
  provide Buyer because of third-party restrictions on Seller, but Seller
  agrees to use its best efforts to obtain the consent of any such third-party
  to furnish such information to Buyer.  Buyer shall keep all materials and
  data obtained confidential and shall return any and all materials and data
  including Buyer's notes and work papers as to any properties not purchased at
  Closing.  

       7.  TITLE DEFECTS.  For the purpose of this Agreement, a "Title Defect"
  shall mean  any material deficiency in one (or more) of the following
  respects, to-wit:

            (a)  Seller's title at the Effective Time and at Closing, as to one
  or more properties, is subject to an outstanding mortgage, deed of trust,
  lien or security interest;  

            (b)  Seller owns less than the net revenue interest shown on
  Exhibit "A.2" or is obligated to bear a share of the costs of operation
  greater than the working interest shown on Exhibit "A.2" without a
  corresponding increase in net revenue interest;

            (c)  Seller's rights and interests have been or are subject to
  being reduced by virtue of the exercise by a third party reversionary or
  back-in interest, farm-out of other than wellbore rights, or other similar
  right not reflected on Exhibit "A.2";

            (d)  Seller is in default under some material provision of a lease,
  farmout agreement, or other contract or agreement affecting the Interests;

            (e)  Seller is in breach of any representations or warranties made
  herein;

            (f)  Changes in the gas balancing amounts from that set out on
  Exhibit A.3; or

            (g)  A material adverse environmental condition exists with respect
  to the Leases or Equipment.

       8.  PREFERENTIAL RIGHTS.  If any of the Interests are subject to
  preferential purchase rights, rights of first refusal, consents to assign,
  Lessor's approvals, or similar rights (collectively, "preferential rights"),
  Seller shall promptly upon the execution of this Agreement by the parties
  hereto notify all holders of preferential rights of its intention to sell the
  leases affected thereby, and of the corresponding Allocated Values.  Seller
  shall promptly notify Buyer if the preferential rights are exercised, or if
  the requisite period has elapsed without said rights having been exercised.

       9.  PHYSICAL AND ENVIRONMENTAL INSPECTION.  After the execution of this
  Agreement Buyer and  its authorized representatives shall have physical
  access to the Interests at Buyer's sole cost, risk and expense for the
  purpose of inspecting the Interests, conducting such tests, examination,
  investigations and assessments as may be reasonable and necessary or
  appropriate to evaluate the environmental and physical conditions of the
  Interests, including the identification of wetlands.  For those Interests
  which are not operated by Seller, Buyer shall obtain permission from the
  operator to conduct such inspections.  Buyer shall defend and indemnify
  Seller from any and all liability, claims, causes of action, injury to
  Buyer's employees, agents or contractors or to Buyer's property, and/or
  injury to Seller's property, employees, agents or contractors which may arise
  out of Buyer's inspections, but only to the extent of Buyer's negligence. 
  Buyer agrees to provide to Seller, upon request, a copy of any environmental
  assessments, including any reports, data, and conclusions.  Buyer and Seller
  shall keep any and all data or information acquired by all such examinations
  and results of all analysis of such data and information strictly
  confidential and not disclose same to any person or agency without the prior
  written approval of both Buyer and Seller.  The foregoing obligation of
  confidentiality shall survive Closing or termination of this Agreement
  without Closing.

       If Buyer discovers a material environmental condition which would
  adversely affect the value of the Interests by $50,000.00 or more per defect
  net to Seller's interest in the affected property and Seller is not in
  compliance with environmental laws, rules, and regulations with respect to
  such property ("Environmental Defect") Buyer shall give Seller written notice
  thereof not later than ten (10) business days prior to Closing together with
  the basis for such assertion and data in support thereof, and shall furnish
  Seller with any proposed reduction in the Sales Price attributable to each
  such matter.  Environmental Defects shall be resolved under the provisions of
  paragraph 10.

       10.  SALE PRICE ADJUSTMENTS.  Buyer may, by delivery of written notice
  in good faith to Seller of the existence of a Title Defect, request reduction
  of the Sale Price for the property affected.  Seller may in good faith
  request an increase in the Sale Price of a property by delivery to Buyer of
  written notice that the net revenue interest actually owned by Seller therein
  is greater than that shown on Exhibit "A.2".  

       Any such notice by Buyer or Seller shall include appropriate evidence to
  substantiate its position and shall be delivered to the other party on or
  before ten (10) business days prior to Closing.  After said date Buyer shall
  be deemed to have fully inspected and accepted the Interests "as is" in their
  then current physical and environmental condition and the Interests shall be
  deemed to be free of Title Defects except for those noticed as above
  provided.  

       Upon timely delivery of a notice by Buyer of a Title Defect or
  Environmental Defect , Seller at Seller's option  may remove the defective
  property from the sale, attempt to cure the defect at Seller's sole cost and
  expense within one hundred twenty  (120) days after the notice, agree to a
  mutually acceptable purchase price reduction or terminate this Agreement
  without liability to Buyer except for return of any Earnest Money without
  interest, provided that Seller may not terminate this Agreement unless the
  aggregate value of Title Defects and Environmental Defects in good faith
  exceeds twenty percent (20%) ($2,260,000.00).  If Seller elects to attempt to
  cure, then Closing as to such property shall proceed without adjustment to
  the Sale Price.  If Seller is unable to cure the defect to Buyer's reasonable
  satisfaction within said one hundred twenty (120) days the Allocated Value
  shall be refunded to Buyer and the defective property reassigned to Seller
  effective as of the Effective Time.   Price adjustments to resolve Title
  Defects shall be based on the Allocated Value, if any, and to the extent
  possible shall be determined in good faith and in accordance with the
  following guidelines:

            (a)  If a Title Defect is based upon Buyer's notice that Seller
  owns a lesser net revenue interest or greater working interest without
  corresponding increase in revenue interest, or the notice is from Seller to
  the effect that Seller owns a greater net revenue interest, than that shown
  on Exhibit "A.2", then the value for the portion of the Interests affected
  shall be reduced or increased (as the case may be) in the same proportion
  that the actual net revenue interest bears to the net revenue interest shown
  on Exhibit "A.2", and the Sale Price shall be reduced or increased
  accordingly.  

            (b)  If a Title Defect is a lien, encumbrance or other charge upon
  a property which is liquidated in amount, then the sum necessary to be paid
  to the obligee to remove the Title Defect from the affected property shall be
  deducted from the Sale Price.  If a Title Defect represents an obligation or
  burden upon the affected property for which the economic detriment to Buyer
  is not liquidated but can be estimated with reasonable certainty, the
  adjustment shall be the sum necessary to compensate Buyer at Closing for the
  adverse economic effect which such Title Defect will have on the affected
  property.  If there is a lien or encumbrance in the form of a judgment
  secured by a supersedeas bond or other security approved by the court issuing
  such order, it shall not be considered a Title Defect under this Agreement.  

       The parties shall reach an agreement as to the existence of all Title
  and Environmental Defects no later than five (5) business days prior to
  Closing.

       In the event a third party exercises an applicable preferential right to
  purchase, the Sale Price shall be reduced by the value allocated to the
  portion of the Interests affected and Closing shall occur as to the remainder
  of the Interests.

       Excluding Sale Price adjustments attributable to exercise of any
  preferential rights to purchase, in the event the net amount of the Sale
  Price adjustments downward exceeds twenty percent (20%) ($2,260,000.00), then
  Seller or Buyer may, upon written notice to the other, cancel this Agreement
  and the same shall be of no further force and effect and in such event Seller
  shall promptly refund to Buyer the Earnest Money without interest. 

       11.  WARRANTY OF TITLE.  In all conveyances executed and delivered
  hereunder, Seller shall specially warrant to Buyer and its successors and
  assigns that it has not previously conveyed the Interests and warrant and
  defend title to the Interests against the claims and demands of all persons
  whomsoever claiming the same or any part thereof by, through or under Seller,
  but not otherwise.  Seller makes no other warranty or representation as to
  the quantity or quality of title to the Interests.

       12.  CONDITIONS OF CLOSING BY BUYER.  The obligation of Buyer to close
  is subject to the satisfaction of the following conditions:

            (a)  Buyer shall have had reasonable access during normal business
  hours to all data and records obligated to be provided Buyer as provided
  herein;  

            (b)  Buyer shall have had reasonable access to the Leases and
  Equipment included in the Interests to conduct an inspection for all
  purposes, including environmental condition;

            (c)  All representations and warranties of Seller contained in this
  Agreement shall be true, correct, and not misleading in all material
  respects, and Seller shall have performed and satisfied all agreements and
  covenants in all material respects required by this Agreement to be performed
  and satisfied by Seller. 

            (d)  Seller shall have obtained and delivered to Buyer (i) all
  prerequisite waivers of preferential rights of purchase and (ii) all
  necessary consents for transfer of the Interests, except those which by their
  nature cannot be requested or obtained until after Closing, or Buyer and
  Seller shall have adjusted the Sale Price in accordance with the provisions
  of this Agreement;

            (e)  No suit or other proceeding shall be pending or threatened
  before any court or governmental agency seeking to restrain, prohibit, or
  declare illegal, or seeking substantial damages in connection with the
  transaction contemplated hereby; and

            (f)  No material adverse change in the condition of or title to the
  Interests shall have occurred subsequent to the Effective Time, except
  depletion through normal production within authorized allowables, ordinary
  changes in rates of production, and depreciation of equipment through
  ordinary wear and tear.

       13.  CONDITIONS OF CLOSING BY SELLER.  The obligation of Seller to close
  is subject to the satisfaction of the following conditions:

            (a)  All representations and warranties of Buyer contained in this
  Agreement shall be true, correct, and not misleading in all material
  respects, and Buyer shall have performed and satisfied all agreements and
  covenants in all material respects required by this Agreement to be performed
  and satisfied by Buyer.

            (b)  No suit or other proceeding shall be pending or threatened
  before any court or governmental agency seeking to restrain, prohibit, or
  declare illegal, or seeking substantial damages in connection with the
  transaction contemplated hereby.

       Neither party shall be obligated to close until all necessary filings
  have been made and all waiting periods have expired under the
  Hart-Scott-Rodino Antitrust Improvements Act of 1976.  The parties agree that
  each shall prepare its own filing and submit it to the proper agency promptly
  after execution of this Agreement and each shall bear its own cost of filing
  and any fees or expenses associated therewith.

       14.  PRELIMINARY CLOSING STATEMENT.  Seller shall prepare and furnish to
  Buyer at least three (3) days prior to Closing a preliminary closing
  statement setting forth the adjustments to the Sale Price to be paid by Buyer
  at Closing.  Such statement shall reflect each adjustment and the calculation
  used to determine such amount.  The preliminary adjusted Sale Price shall
  mean the Sale Price adjusted as provided herein, including but not limited to
  Earnest Money, title defects, interest variances, gas imbalances, operating
  expense and revenues attributable to the Interests being conveyed on and
  after the Effective Time.  Insofar as concerns operating expenses and
  revenues attributable to the Interests subject to Closing for the period from
  the Effective Time through Closing, for purposes of the preliminary closing
  statement, Buyer shall receive a net adjustment for estimated operating
  expense and revenues for those periods which the actual amounts cannot be
  determined at Closing.  Final adjustments to the actual gas balancing,
  expense incurred and revenues received shall be taken into account on the
  Final Settlement Statement.

       15.  CLOSING.  The Closing shall occur on or before March 29, 1995, at
  9:00 a.m., at the offices of Seller at 700 Milam, Houston, Texas, or at such
  other place as Seller may designate, or at such other time and place as
  Seller and Buyer may mutually agree in writing.  If the transaction fails to
  close by said date for any reason whether or not the fault of Seller, Seller
  shall have the unilateral right and option to either extend the Closing Date
  for not more than 30 additional days or to terminate the Purchase and Sale
  Agreement without liability to the Buyer except for return of the Earnest
  Money without interest.  At Closing the following will occur:

            (a)  Seller shall execute, acknowledge and deliver an Assignment
  and Bill of Sale substantially in the form and substance of Exhibit "B"
  attached hereto, covering all of the Interests to be sold pursuant hereto;

            (b)  Buyer shall deliver to Seller by wire transfer the total Sale
  Price as adjusted hereunder, subject to further adjustment after Closing as
  provided for herein;  

            (c)  On or before Closing, Seller and Buyer shall execute all
  necessary forms to be filed with the appropriate regulatory authorities
  concerning the change of ownership and operatorship of the Interests, and
  Buyer shall submit same for approval to such regulatory authorities at
  Buyer's expense, and Buyer shall deliver to Seller evidence of the
  appropriate state and federal plugging bond, surety letter, or letter of
  credit acceptable to such authority to authorize Buyer's right to conduct
  operations, if applicable; 
            (c)  Seller shall, subject to the terms of any applicable operating
  agreements, deliver to Buyer exclusive possession of the Interests, effective
  as of the Effective Time;

            (d)  Seller shall promptly after Closing provide Buyer at Buyer's
  sole expense any maps, reports and other written material relating to the
  Interests, including without limitation, lease files, property records,
  contract files, operations files, copies of tax and accounting records and
  files, well files, geological and geophysical maps, core analyses and
  hydrocarbon analyses, well logs, mud logs, core data and field studies
  ("Records"); however, Seller shall have no obligation to furnish Buyer any
  data or information which Seller cannot provide Buyer because of third-party
  restrictions.  Buyer agrees to maintain the Records and allow Seller
  reasonable access thereto for a period of six (6) years after Closing; and

            (e)  In compliance with Section 1445 of the Internal Revenue Code,
  Seller shall execute and deliver to Buyer a Nonforeign Affidavit in the form
  of Exhibit "C" attached hereto.

       16.  RESERVATIONS AND EXCEPTIONS.  Sale and purchase of the Interests is
  made subject to all reservations, exceptions, limitations, contracts and
  other burdens or instruments which are of record or of which Buyer has actual
  or constructive notice.  

       17.  ASSUMPTION OF LIABILITIES AND INDEMNITIES.  As used in this
  paragraph and the subparagraphs hereunder "claims" shall include claims,
  demands, causes of action, liabilities, damages, penalties and judgments of
  any kind or character and all costs and fees in connection therewith,
  including attorney's fees.  

            (a)  The Interests have been used for exploring, developing and
  producing oil and gas.  Spills of wastes, crude oil, produced water,
  hazardous substances, and other materials may have occurred in the past on
  the Leases or in connection with the Interests.  There is a possibility that
  there are currently unknown, abandoned wells, plugged wells, pipelines and
  other equipment on or underneath the property subject to the Interests.  It
  is the intent of Buyer and Seller that all liability associated with the
  above matters as well as any liability to plug or replug such wells in
  accordance with the applicable rules, regulations and requirements of
  governmental agencies be passed to the Buyer at Closing and that Buyer shall
  assume all liability for such matters and all claims related thereto. 
  Additionally, the Interests may contain asbestos, hazardous substances, or
  Naturally Occurring Radioactive Material ("NORM").  NORM may affix or attach
  itself to the inside of wells, materials, and equipment as scale or in other
  forms; wells, materials and equipment located on the Leases or included in
  the Interests may contain NORM; and NORM containing material may have been
  buried or otherwise disposed of on the Leases.  Special procedures may be
  required for remediating, removing, transporting and disposing of asbestos,
  NORM, hazardous substances and other materials from the Interests, and Buyer
  assumes all liability for any assessment, remediation, removal,
  transportation, and disposal of these materials and associated activities in
  accordance with the applicable rules, regulations and requirements of
  governmental agencies.

            (b)  Buyer shall, (i) at Closing assume, and be responsible for and
  comply with all duties and obligations of Seller, express or implied arising
  on or after the Effective Time, with respect to the Interests, including,
  without limitation, those arising under or by virtue of any lease, contract,
  agreement, document, permit, applicable statute or rule, regulation or order
  of any governmental authority, (specifically including, without limitation,
  any governmental request or requirement to plug, re-plug and/or abandon any
  well of whatsoever type, status or classification, or take any clean-up or
  other action with respect to the property or premises, including hazardous
  waste cleanup costs under the Resource and Recovery Act (RCRA), 42 U.S.C.
  6901-6991, the Comprehensive Environmental Response, Compensation and
  Liability Act (CERCLA), 42  U.S.C. 9601-9675 or similar laws, rules or
  regulations) and (ii) defend, indemnify and hold Seller harmless from any and
  all claims arising out of or in connection therewith.  

            (c)  Buyer shall defend, indemnify and hold Seller harmless from
  any and all claims for personal injury, death or damage to property or to the
  environment, or for any other relief, arising directly or indirectly from, or
  incident to, the use, occupation, operation, maintenance or abandonment of
  any of the Interests, or condition of the property or premises, whether
  latent or patent, and whether arising from or contributed to by the
  negligence in any form of Seller, its agents, employees or contractors, and
  asserted against Buyer and/or Seller after the Effective Time, whether or not
  any such claims result from conditions, actions or inactions at or before the
  Effective Time; provided that, except for any claims relating to the
  environmental condition of the Interests (including contamination of the
  Interests or other properties by naturally occurring radio active materials
  or toxic or hazardous substances), Seller shall for a period of two (2) years
  after the Effective Time defend, indemnify and hold Buyer harmless from any
  and all claims, for personal injury, death, damage to property or for any
  other relief, arising directly or indirectly from, or incident to, the use,
  occupation, operation, maintenance or abandonment of any of the Interests,
  only insofar as such claims are attributable to times prior to the Effective
  Time.

            (d)  The indemnities in this paragraph shall inure to the benefit
  of Buyer and Seller and the officers, directors, employees, agents,
  successors and assigns of each of them.

       18.  TAXES.  All ad valorem taxes, real property taxes, and similar
  obligations with respect to the tax period in which the Effective Time occurs
  (the "current tax period") shall be apportioned between Seller and Buyer as
  of the Effective Time.  

       18.  ACCOUNTING.   All proceeds (including proceeds held in suspense or
  escrow) from the sale of production actually sold and delivered by Seller
  prior to the Effective Time attributable to the Interests shall belong to
  Seller and all proceeds from the sale of production actually sold and
  delivered after the Effective Time attributable to the Interests shall belong
  to Buyer.  All oil, condensate or liquid hydrocarbons and any products
  (liquid, gas or solid) separated or processed therefrom (hereinafter in this
  paragraph called "oil") in storage shall be measured or gauged and all gas
  meter charts shall be replaced at the Effective Time.  Buyer shall pay Seller
  for such oil at the posted field price currently prevailing for oil of like
  grade and gravity in the field, provided that Buyer shall not pay Seller for
  oil in storage below the level of the tank cut off valve (tank bottoms).  Any
  gas imbalance shall be accounted for between Buyer and Seller as follows:

       Buyer and Seller agree that the net gas imbalance attributable to the
  Interests as of the Effective Date is believed to be that which is set forth
  on Exhibit "A.3" (the "Agreed Imbalance"), notwithstanding that the actual
  imbalance may be less or greater.  Buyer and Seller shall verify the actual
  net gas imbalance in the Post-Closing accounting and any imbalance shall be
  accounted for between the parties at the price of $1.00 per MCF but only as
  to those volumes which exceed or are less than the Agreed Imbalance. 
  Provided that if an applicable operating or gas balancing agreement requires
  cash balancing upon conveyance of the Interests, the adjustment price shall
  equal the greater of $1.00 per MCF or the price received in the cash
  balancing.  Such settlement shall be final and neither party thereafter shall
  make claim upon the other concerning the gas balances of the Interests. 
  Buyer assumes all rights and liabilities relating to gas imbalances
  discovered after the Post-Closing settlement including any revenue adjustment
  caused by such subsequently discovered imbalance.

       Except as otherwise specifically provided in this Agreement, all costs,
  expenses and obligations relating to the Interests which accrue prior to the
  Effective Time shall be paid and discharged by Seller regardless of when
  invoices for such costs, expenses and obligations are received and all costs,
  expenses and obligations relating to the Interests which accrue after the
  Effective Time shall be paid and discharged by Buyer.  

       The foregoing adjustments shall be made by debits and credits between
  the parties at Post-Closing, as provided for hereinafter.

       To the extent necessary to comply with requirements of the Securities
  and Exchange Commission (the "SEC"), Buyer shall have the right to audit
  Seller's business and financial records, including without limitation
  property detail, standardized measure data and reserve information prepared
  by Netherland, Sewell and Associates, Inc., maintained in connection with the
  Interests (except for income tax records) for all periods for which audited
  financials are required by the SEC to be prepared and filed by Buyer.

       20.  SALES TAX.  The Sale Price provided for hereunder excludes any
  sales taxes or other taxes in connection with the sale of property pursuant
  to this Agreement.  If a determination is ever made that a sales tax or other
  transfer tax applies, Buyer shall be liable for such tax as well as any
  applicable conveyance, transfer and recording fees, and real estate transfer
  stamps or taxes imposed on any transfer of property pursuant to this
  Agreement.  Buyer shall defend and hold Seller harmless with respect to the
  payment of all such taxes, if any, including any interest or penalties
  assessed thereon.  

       21.  POST-CLOSING ADJUSTMENTS.  As soon as practicable after Closing,
  but in any event within one hundred eighty (180) days thereafter, Seller
  shall prepare, in accordance with this Agreement and (where applicable) in
  accordance with generally accepted accounting principles consistently
  applied, a final settlement statement (herein called the "Final Statement")
  setting forth each adjustment or payment which was not finally determined as
  of the Closing Date, and showing the calculation of the final settlement
  price based on such Final Statement (the "final settlement price").  Seller
  shall submit the Final Statement to Buyer and shall afford Buyer access to
  Seller's records pertaining to the computations contained in the Final
  Statement.  As soon as practicable after receipt of the statement, Buyer
  shall deliver to Seller a written report containing any changes which Buyer
  proposes be made to the Final Statement.  The parties shall agree with
  respect to the amounts due pursuant to such Post-Closing adjustment not later
  than thirty (30) days after Buyer's receipt of Seller's Final Statement.  The
  date upon which such agreement is reached shall be herein called the
  "Settlement Date".  In the event that (i) the final settlement price is more
  than the amount previously paid to Seller, Buyer shall pay to Seller in
  immediately available funds the amount of such difference; or (ii) the final
  settlement price is less than the amount previously paid to Seller, Seller
  shall pay to Buyer in immediately available funds the amount of such
  difference.  

       22.  BROKERS' FEE.  Each of Seller and Buyer represents and warrants to
  the other that it has not incurred liability, contingent or otherwise, for
  brokers' or finders' fees in respect of this Agreement or the transactions
  contemplated hereby.  

       23.  NOTICES.  All communications required or permitted under this
  Agreement shall be in writing and any communication or delivery hereunder
  shall be deemed to have been fully made if actually delivered, or if mailed
  by registered or certified mail, postage prepaid, to the address as set forth
  below:

            SELLER

            PENNZOIL EXPLORATION AND PRODUCTION COMPANY
            700 MILAM
            HOUSTON, TEXAS  77002
            ATTENTION: STEPHEN G. MCNALLY
            PHONE:  (713) 546-8361
            FAX:  (713) 546-6486

            BUYER

            MAYNARD OIL COMPANY
            8080 NORTH CENTRAL EXPY, STE 660
            DALLAS, TEXAS 75206
            ATTENTION:  CASSONDRA FOSTER, LAND MANAGER
            PHONE:  ( 214) 891-8461

       24.  FURTHER ASSURANCE.  After Closing each of the parties shall
  execute, acknowledge and deliver to the other such further instruments, and
  take such other actions as may be reasonably necessary to carry out the
  provisions of this Agreement.  However, Buyer shall assume all responsibility
  for notifying the purchaser of oil and gas production from the Interests, and
  such other designated persons who may be responsible for disbursing payments
  for the purchase of such production, of the change of ownership of the
  Interests.  Buyer shall take all actions necessary to effectuate the transfer
  of such payments to Buyer.  After the final post-closing settlement,
  additional proceeds received by or expenses paid by either Buyer or Seller on
  behalf of the other shall be settled by invoicing the other party for
  expenses paid or remitting to the other party any proceeds received.

       25.  DISCLAIMER OF WARRANTIES.  EXCEPT AS PROVIDED IN PARAGRAPH 11
  HEREOF, ANY INSTRUMENT OF CONVEYANCE OR SALE EXECUTED PURSUANT HERETO SHALL
  BE EXECUTED WITHOUT ANY WARRANTY OF TITLE, EITHER EXPRESS, IMPLIED,
  STATUTORY, OR OTHERWISE, WITHOUT ANY EXPRESS OR IMPLIED WARRANTY OR
  REPRESENTATION AS TO THE MERCHANTABILITY OF ANY OF THE EQUIPMENT OR OTHER
  PERSONAL PROPERTY INCLUDED IN THE INTERESTS OR ITS FITNESS FOR ANY PARTICULAR
  PURPOSE, AND WITHOUT ANY OTHER EXPRESS OR IMPLIED WARRANTY OR REPRESENTATION
  WHATSOEVER.  IT IS UNDERSTOOD AND AGREED THAT BUYER SHALL HAVE INSPECTED THE
  INTERESTS  FOR ALL PURPOSES, INCLUDING WITHOUT LIMITATION FOR THE PURPOSE OF
  DETECTING THE PRESENCE OF NATURALLY OCCURRING RADIOACTIVE MATERIAL
  (HEREINAFTER REFERRED TO AS "NORM") AND MAN MADE MATERIAL FIBERS (HEREINAFTER
  REFERRED TO AS "MMMF") AND SATISFIED ITSELF AS TO THEIR PHYSICAL AND
  ENVIRONMENTAL CONDITION, BOTH SURFACE AND SUBSURFACE, INCLUDING BUT NOT
  LIMITED TO CONDITIONS RELATED TO THE PRESENCE, RELEASE, OR DISPOSAL OF
  HAZARDOUS SUBSTANCES, AND THAT BUYER IS RELYING SOLELY UPON THE RESULTS OF
  SUCH INSPECTION OF THE INTERESTS AND SHALL ACCEPT ALL OF THE SAME IN THEIR
  "AS IS, WHERE IS" CONDITION.  SELLER DISCLAIMS ALL LIABILITY ARISING IN
  CONNECTION WITH THE PRESENCE OF NORM OR MMMF ON THE INTERESTS AND IF TESTS
  HAVE BEEN CONDUCTED BY SELLER FOR THE PRESENCE OF NORM OR MMMF, SELLER
  DISCLAIMS ANY WARRANTY RESPECTING THE ACCURACY OF SUCH TESTS OR RESULTS.  IN
  ADDITION, SELLER SHALL MAKE NO WARRANTY OR REPRESENTATION, EXPRESS OR
  IMPLIED, AS TO THE ACCURACY OR COMPLETENESS OF ANY DATA, INFORMATION OR
  MATERIALS HERETOFORE OR HEREAFTER FURNISHED BUYER IN CONNECTION WITH THE
  INTERESTS, OR AS TO THE QUALITY OR QUANTITY OF HYDROCARBON RESERVES (IF ANY)
  ATTRIBUTABLE TO THE INTERESTS OR THE ABILITY OF THE INTERESTS TO PRODUCE
  HYDROCARBONS.  ANY AND ALL SUCH DATA, INFORMATION AND OTHER MATERIALS
  FURNISHED BY SELLER IS PROVIDED TO BUYER AS A CONVENIENCE AND ANY RELIANCE ON
  OR USE OF THE SAME SHALL BE AT BUYER'S SOLE RISK.  BUYER EXPRESSLY WAIVES THE
  PROVISIONS OF CHAPTER XVII, SUBCHAPTER E, SECTIONS 17.41 THROUGH 17.63,
  INCLUSIVE (OTHER THAN SECTION 17.555, WHICH IS NOT WAIVED), VERNON'S TEXAS
  CODE ANNOTATED, BUSINESS AND COMMERCE CODE (THE "DECEPTIVE TRADE PRACTICES
  ACT") AND BUYER ACKNOWLEDGES THAT THIS EXPRESS WAIVER SHALL BE CONSIDERED A
  MATERIAL AND INTEGRAL PART OF THIS SALE AND THE CONSIDERATION THEREOF; AND
  ACKNOWLEDGES THAT THIS WAIVER HAS BEEN BROUGHT TO THE ATTENTION OF BUYER AND
  EXPLAINED IN DETAIL AND THAT BUYER HAS VOLUNTARILY AND KNOWINGLY CONSENTED TO
  THIS WAIVER.  ALL INSTRUMENTS OF CONVEYANCE TO BE DELIVERED BY SELLER AT
  CLOSING SHALL EXPRESSLY SET FORTH THE DISCLAIMERS OF REPRESENTATIONS AND
  WARRANTIES CONTAINED IN THIS PARAGRAPH.

       26.  OPERATIONS BY SELLER.  Seller will operate the Seller-operated
  Interests until the later of Closing, the Effective Time, or the time the
  applicable operating agreement or plan of unitization may require, at which
  time operations will be turned over to, and become the responsibility of,
  Buyer, unless a third party is elected Operator under such agreement.  Seller
  makes no representation that Buyer will be elected or appointed Operator of
  any property included within the Interests.

            (a)  RISK.  The risk of casualty loss relating to the Interests
  will pass from Seller to Buyer as of the later of the Closing Date or the
  Effective Time.

            (b)  OPERATIONS AFTER EFFECTIVE TIME.  Operations conducted by
  Seller after the Effective Time with respect to the Interests will be
  conducted on behalf of Buyer, and Buyer will pay Seller for operation,
  protection and maintenance of the Interests as follows:

                 (1)  Buyer will pay Seller a fixed monthly rate per
       active producing well for operation and maintenance expenses
       (excluding workover costs, plugging and abandonment costs, and
       major costs).  Such fixed monthly rate will be based on the average
       cost per active producing well on Seller's accounting lease basis
       for the three months prior to the Effective Time;

                 (2)  Buyer will reimburse Seller for all workover costs,
       plugging, abandoning and reabandoning costs, and other major costs
       that Seller incurs after the Effective Time, on an actual-cost
       basis; and

                 (3)  Buyer will pay operation and administrative overhead
       to Seller at a rate equal to twenty-five percent (25%) of the sum
       of the operation and maintenance expenses, as described in
       paragraph (b) (1), and major costs, as described in paragraph (b)
       (2), actually charged to Buyer.

            These charges will be included in the Final Statement as
       provided in this Agreement.

            (c)  SELECTION OF OPERATOR.  Seller may poll the parties to any
  applicable operating agreement or plan of unitization before Closing to
  select a successor Operator.  The poll may stipulate that the parties'
  selection of a successor Operator will not be effective unless Closing
  occurs.  If Seller does not poll, then Buyer will do so.  Buyer's selection
  as Operator is not a condition to Buyer's performance of its obligations
  under this Agreement.

            (d)  NOTICE OF CHANGE OF OWNERSHIP AND OPERATORSHIP.  Buyer will
  take all necessary steps to ensure that Buyer is recognized as the owner and,
  if elected, Operator of the Interests by all appropriate parties, including
  any regulatory commission, body, or board with jurisdiction.  If Seller is
  the principal on any financial assurance (including a bond) relating to the
  Interests, which financial assurance is required by any law, rule or
  regulation, then Buyer will secure replacement financial assurance in the
  required amount and deliver it to the regulatory body requiring such
  assurance, to the end that Seller's financial assurance is released and
  discharged.

            (e)  REMOVAL OF SIGNS.  Seller may either remove its name and signs
  from the Seller-operated Interests or require Buyer to do so.  Buyer grants
  Seller a right of access to the Interests to remove Seller's signs and name
  from all wells, facilities and Leases, or to confirm that Buyer has done so. 
  If Seller's name or signs remain on the Interests after Closing, Buyer will
  promptly, but no later than required by applicable rules and regulations or
  forty-five (45) days after Closing, whichever is earlier, remove all
  remaining signs and references to Seller and erect or install signs complying
  with applicable rules and regulations, including signs showing the Buyer as
  Operator of the Interests.

       27.  SECURITIES LAWS.  The solicitation of offers and the sale of the
  Interests by Seller have not been registered under any securities laws. 
  Buyer represents that at no time has it been presented with or solicited by
  or through any public promotion or any form of advertising in connection with
  this transaction.  Buyer represents that it intends to acquire the Interests
  for its own benefit and account and that it is not acquiring the Interests
  with the intent of distributing fractional, undivided interests that would be
  subject to regulation by federal or state securities laws, and that if it
  sells, transfers, or otherwise disposes of the Interests or fractional,
  undivided interests, it will do so in compliance with applicable federal and
  state securities laws.

       28.  DUE DILIGENCE.  Buyer represents that it has performed, or will
  perform prior to Closing, sufficient review and due diligence with respect to
  the Interests, which includes reviewing well-data, title, and other files,
  and performing necessary evaluations, assessments, and other tasks involved
  in evaluating the Interests, to satisfy its requirements completely and to
  enable it to make an informed decision to acquire the Interests under the
  terms of this Agreement.

       29.  BASIS OF BUYER'S DECISION.  Buyer represents that by reason of its
  knowledge and experience in the evaluation, acquisition, and operation of oil
  and gas properties, Buyer has evaluated the merits and risks of purchasing
  the Interests from Seller and has formed an opinion based solely on Buyer's
  knowledge and experience and not on any representations or warranties by
  Seller.  BUYER REPRESENTS THAT IT HAS NOT RELIED AND WILL NOT RELY ON ANY
  STATEMENTS BY SELLER OR ITS REPRESENTATIVES IN MAKING ITS DECISION TO ENTER
  INTO THIS AGREEMENT OR TO CLOSE THIS TRANSACTION.

       30.  MATERIAL FACTOR.  Buyer acknowledges that Buyer's representations
  under paragraphs 27 through 29 are a material inducement to Seller to enter
  into this Agreement with, and close the sale to, Buyer.

       31.  PRESS RELEASE.  There shall be no press release or public
  communication concerning this purchase and sale by either party, except as
  required by law or with the written consent of the party not originating said
  release or communication.  Parties will endeavor to consult each other in a
  timely manner on all press releases required by law.

       32.  ENTIRE AGREEMENT.  This instrument states the entire agreement
  between the parties and may be supplemented, altered, amended, modified or
  revoked by writing only, signed by both parties.  This Agreement supercedes
  any prior agreements between the parties concerning sale of the Interests,
  except that any confidentiality agreement shall terminate at Closing.  The
  headings are for guidance only and shall have no significance in the
  interpretations of this Agreement.

       33.  TAX REPORTING.  Seller and Buyer agree that this transaction is not
  subject to the reporting requirement of Section 1060 of the Internal Revenue
  Code of 1986, as amended, and that, therefore, IRS Form 8594, Asset
  Acquisition statement, is not required to be and will not be filed for this
  transaction.  In the event the parties mutually agree that a filing of Form
  8594 is required, the parties will confer and cooperate in the preparation
  and filing of their respective forms to reflect a consistent reporting of the
  agreed upon allocation.

       34.  ASSIGNABILITY.  This Agreement and the rights and obligations
  hereunder shall not be assignable or delegable by either party hereto without
  the prior written consent of the other party unless such assignment occurs by
  merger, reorganization or sale of all of a party's assets.

       35.  SURVIVAL.  Unless expressly limited, all of the representations,
  warranties, and agreements of or by the parties hereto shall survive the
  execution and delivery of the Assignment and Bill of Sale.

       36.  TAX DEFERRED EXCHANGE ELECTION.   Seller may, at or before the
  Closing, designate in writing one or more properties which Buyer will acquire
  and trade to Seller for the Interests (herein collectively called the
  "Exchange Property").  In the event Seller has not found a suitable Exchange
  Property prior to the Closing, Seller may elect, by notice to Buyer delivered
  on or before the Closing Date, to have the Sale Price paid to a qualified
  intermediary until Seller has designated the Exchange Property.  The Exchange
  Property shall be designated by Seller and acquired by the qualified
  intermediary within the time periods prescribed in Section 1031 (a)(3) of the
  Internal Revenue Code of 1986, as amended (the Code), and shall thereupon be
  conveyed to Seller.  In the event Seller fails to designate and the qualified
  intermediary fails to acquire the Exchange Property within such time periods,
  the agency or trust shall terminate and the proceeds then held by the
  qualified intermediary shall be paid immediately to Seller.  The rights and
  responsibilities of Seller, Buyer and the qualified intermediary shall be
  documented with such agreements containing such terms and provisions as shall
  be determined by Seller to be necessary to accomplish a tax free exchange
  under Section 1031 of the Code, subject, however, to the limitations on costs
  and liabilities of Buyer set forth below.  If Seller makes a tax deferred
  exchange election, Buyer shall not be obligated to pay any additional costs
  or incur any additional obligations in the acquisition of the Interests.

       37.  This Agreement shall be governed by the laws of the State of Texas.

       38.  This Agreement may be executed in counterparts and each counterpart
  shall constitute a binding agreement as if the parties had executed a single
  document.

        EXECUTED as of the date first above mentioned.

  SELLER                                  BUYER

  PENNZOIL EXPLORATION AND                MAYNARD OIL COMPANY
  PRODUCTION COMPANY

  By:   Stephen G. McNally                By:   Lynn R. Moore
  Its:  Agent and Attorney in Fact        Its:  President



  EXHIBIT A

  Exhibit "A" (including A, A.1, A.2, A.3 and A.4) shall contain the following
  information:

  I.   Lease Descriptions.

  II.  List of "material" contracts to which the properties are subject  (i.e.
       Joint Operating Agreements, Unitization Agreements, Pooling Agreements,
       Letter Agreements, Gas Contracts, etc.).

  III. List of  Wells and Units, including Working and/or Net Revenue
       Interests, together with the "Allocated Values".

  IV.  List of any Equipment to be retained by Seller.

  V.   List of gas imbalances as of the last known date.