PEASE OIL & GAS CO /CO/
S-4/A, EX-99, 2000-08-15
CRUDE PETROLEUM & NATURAL GAS
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PRIVATE AND CONFIDENTIAL
BY FAX

Carpatsky Petroleum Inc.                          Pease Oil & Gas Co.
6671 Southwest Fwy.                               751 Horizon Court, Suite 203
Suite 303                                         P.O. Box 60219
Houston, Texas 77074-2284                         Grand Junction, CO 81506-8758
Attn:                                             Attn:
Mr. Robert Bensch                                 Mr. Patrick J. Duncan
Vice President                                    President


28 April 2000

Dear Mr. Bensch:

RIGHTS OF CARPATSKY PETROLEUM CORPORATION IN RESPECT OF THE RC
DEPOSIT

Further to your request I am writing to  comment(1)  on certain legal aspects of
the operations under the Agreement on Joint  Investment and Production  Activity
No.  410/95 of September  14, 1995 (with all  subsequent  alterations)  in which
Carpatsky Petroleum Corporation is involved.

-------------
       (1) Ukraine's tax and legal system is relatively new and undergoing rapid
development.  As such, there is little official interpretation available in that
there  has been an  insufficient  period  of time for the laws to be  thoroughly
tested in practice either at an administrative  or judicial level.  Accordingly,
our  comments  contained  herein  reflect  our  best  understanding  of the laws
currently in effect based on the  legislation  in force,  on available  official
interpretation  and unofficial  discussions with Ukrainian  authorities.  Please
note that because of the lack of official interpretations available and the fact
that the relevant  Ukrainian  authorities have little experience in interpreting
such laws, we can provide no assurance  that Ukrainian  authorities  will take a
position consistent with the comments contained in this review.  Furthermore, we
express no comments as to changes in the laws on interpretations  thereof,  that
may occur subsequent to the date of this review.




<PAGE>


                                                                     Page 2 of 9

In rendering  this  opinion,  we have  examined  such  questions of law and such
licenses,  agreements and other documents  executed between Carpatsky  Petroleum
Corporation and  Poltavanaftogas as well as some third parties provided to us as
we have deemed necessary including copies of the following documents:

1.   Agreement  on  Joint  Activities  between   Poltavanaftogas  and  Carpatsky
     Petroleum Corporation No. 410/95 of September 14, 1995;

2.   Agreement of October 15, 1996 on Introducing  Amendments and Addenda to the
     Agreement  No.  410/95 of September  14, 1995 on Joint  Activities  between
     Poltavanaftogas and Carpatsky  Petroleum  Corporation (new version named as
     Agreement  No.  410/95  of  September  14,  1995 on  Joint  Investment  and
     Production   Activities  as  to   Exploration   and   Development   of  the
     Rudivsko-Chervonozavodske Deposit);

3.   Addenda of December 25, 1997 to Agreement No. 410/95 of September 14, 1995;

4.   Amendments  and  Addenda  of August 26,  1998 to  Agreement  No.  410/95 of
     September  14, 1995 on Joint  Investment  and  Production  Activities as to
     Exploration and Development of the Rudivsko-Chervonozavodske  Deposit as of
     October 15, 1996, including amendments and addenda of December 25, 1997;

5.   Amendments  and  Addenda  of April  23,  1999 to  Agreement  No.  410/95 of
     September  14, 1995 on Joint  Investment  and  Production  Activities as to
     Exploration and Development of the Rudivsko-Chervonozavodske  Deposit as of
     October 15, 1996, including amendments and addenda of December 25, 1997 and
     August 26, 1998;

6.   Card of State  registration dated April 4, 1997 of the Agreement No. 410/95
     of September 14, 1995 with the Poltava Region Department of the Ministry of
     Foreign Economic Relations and Trade of Ukraine ;

7.   License No. 470 of July 31, 1995 granted by the State Committee for Geology
     and Utilization of Subsoil to Poltavanaftogas  for geological search (pilot
     production) of the Rudivsko- Chervonozavodske Deposit;

8.   License No. 469 of July 31, 1995 granted by the State Committee for Geology
     and  Utilization  of Subsoil to  Chernigivnaftogasgeologiya  for geological
     search (pilot production) of the Rudivsko-Chervonozavodske Deposit;

9.   License  No.  968 of March 30,  1998  granted  by the State  Committee  for
     Geology  and  Utilization  of Subsoil to  Ukrnafta  for  geological  search
     including pilot production of the Rudivsko- Chervonozavodske Deposit;

10.  Agreement  No. 5/27 of December 30, 1997 "On  Geological  Search of Subsoil
     and Preparation for Industrial Development of the Rudivsko-Chervonozavodske
     Hydrocarbon Deposit" between Ukrnafta and Chernigivnaftogasgeologiya;


<PAGE>


                                                                     Page 3 of 9


11.  Agreement     "On    procedure    of     exploitation     of    wells    of
     Rudivsko-Chervonozavodske  deposits which are jointly owned by Ukrnafta and
     American company Carpatsky Petroleum Corporation,  collection,  preparation
     of gas and condensate from these wells" dated August 31, 1998;

12.  Agreement   on  Joint   Works  on   Pilot   Production   of  Wells  of  the
     Rudivsko-Chervonozavodske   Deposit  by  the  state  geological  enterprise
     Chernigivnaftogasgeologiya  and the enterprise  Poltavanaftogas  of May 16,
     1995;

13.  Agreement  (Protocol)  on  Holding  Joint  Works  on  Pilot  Production  of
     Rudivsko-  Chervonozavodske,   Mekhedivske,   Svistunkivske,   Sviridovske,
     Chervonolutske gas condensate  deposits by the state geological  enterprise
     Chernigivnaftogasgeologiya  and the enterprise  Poltavanaftogas  of May 16,
     1995.

Background

Carpatsky  Petroleum  Corporation  (CPC)  is a party to the  Agreement  on Joint
Investment and Production  Activity (the JAA).  Based on the JAA, CPC has agreed
to  participate  with the open  joint  stock  company  Ukrnafta  represented  by
Poltavanaftogas,  the oil and gas  extraction  Department  of  Ukrnafta  for the
exploration,  development  and  production  of  hydrocarbons  on  the  Rudivsko-
Chervonozavodske deposit (the RC deposit).

According  to  Ukrainian  legislation,  exploration  and  production  of mineral
resources  in  Ukraine  require  obtaining  a  special  license  from the  State
Committee for Geology and  Utilization of Subsoil(2).  The license to operate on
the RC deposit was granted to Ukrnafta which is an open joint stock company --60

-------------
         (2)      Code of Subsoil of Ukraine of July 27, 1994

        "Article 16. Licensing activities  related to the utilisation of mineral
resources

         Licensing activities related to the utilisation of mineral resources is
the exclusive procedure for granting special permissions  (licenses) for the use
of mineral resources fields for designated purposes.
         Special  permissions  (licenses)  for using  mineral  resources  within
certain  areas shall be granted to  specialised  enterprises,  institutions  and
organisations,  as well as to citizens who have the appropriate  qualifications,
and the  material,  technical and economic  capacities  for the  utilisation  of
mineral resources.
         The granting of special  permissions  (licenses) for the utilisation of
mineral  resources  shall be carried out after the  preliminary  approval of the
appropriate  council of people's deputies for the allocation of a parcel of land
for designated purposes, with the except of those cases when there is no need to
allocate a parcel of land.
         In the event that certain types of work related to the  utilisation  of
mineral  resources  are  performed by persons who are not  designated by special
permission   (license),   the   responsibility  for  observation  of  conditions
stipulated in the special  permission  (license) shall be carried by the subject
that received the special permission (license).
         Special  limitations  stipulated by the current  legislation of Ukraine
can be set in regard to  certain  types of  subsurface  utilisation  or  certain
subsurface users.
         The special  permissions  (licenses) for the use of subsurface shall be
provided by the State  Committee for Geology and the Use of Subsurface  with the
consent of the  Ministry of Ukraine on  Environmental  Protection  generally  on
competitive  terms and  according to  procedures  established  by the Cabinet of
Ministers of Ukraine."


<PAGE>


                                                                     Page 4 of 9

percent  of which are owned by  Ukrainian  Government  on March 30,  1998.  This
license No. 968 entitles Ukrnafta to carry out geological search  (exploration),
including  pilot  production of oil, gas and condensed  gas. As indicated in the
license,  the purpose of the license is the exploration of oil and gas reserves,
pilot  exploitation of wells and  determination  of reserves for the purposes of
future development of the deposit.

Under the terms of the license,  operations  shall be carried out in  accordance
with the  Agreement  No. 5/27 of  December  30,  1997 "On  Geological  Search of
Subsoil    and    Preparation     for    Industrial     Development    of    the
Rudivsko-Chervonozavodske    Hydrocarbon    Deposit"    between   Ukrnafta   and
Chernigivnaftogasgeologiya.  Chernigivnaftogasgeologiya is a state owned oil and
gas exploration and prospecting  company.  Neither CPC nor the JAA are mentioned
in the license.

You have  requested  that we  comment  on  whether  CPC has the  right to oil or
natural gas reserves on the RC field.

Rights of license holders

According to the Code(3), subsoil is in the exclusive ownership of the Ukrainian
people and may be granted to  interested  parties only for use.  Any  agreements
that are in an  indirect or hidden form  violate the right of  ownership  of the
Ukrainian  people to  subsoil  shall be deemed  invalid.  The  Ukrainian  people
realize the right of ownership to subsoil  through the Verkhovna Rada of Ukraine
(Ukrainian Parliament), Verkhovna Rada of the Republic of Crimea and local radas
(councils of people's deputies).

It follows from the above that the subsoil cannot be in the ownership of subsoil
users. According to the Code(4), users of subsoil have the right to:
--------------
         (3)   Code
         "Article 4.   Ownership of Mineral Resources
         Mineral  resources  shall be the  exclusive  property of the  Ukrainian
people  and  shall  be  transferred  only  on the  basis  of the  right  to use.
Agreements or acts, which directly or indirectly  violate the ownership right of
the Ukrainian people to mineral resources, shall be null and void. The Ukrainian
people shall exercise their ownership  rights to mineral  resources  through the
Parliament  of  Ukraine,  the  Parliament  of the  Republic  of Crimea and local
councils of people's deputies.
         Certain  authority  regarding the disposal of mineral  resources may be
delegated by Ukrainian  legislation to the appropriate bodies of state executive
power."
          (4)   Code
     "Article 24.  Rights and Obligations of Users of Mineral Resources
     Users of mineral resources shall have the right:
1)   to  conduct   geological   surveys  and  to  carry  out  the  comprehensive
     development of deposits of mineral resources within mineral resource fields
     allocated  to  them,  unless  provided  otherwise  in  accordance  with the
     conditions of a special permission (license);
2)   to dispose of produced  mineral  resources,  unless  otherwise  provided by
     legislation or the conditions of a special permission (license);
3)   to preserve a mineral resource  deposit or a portion thereof  allocated for
     utilization pursuant to the conditions of a special permission (license);
4)   the priority right to extend the term of a temporary subsoil use;
5)   utilization of a mineral resource field.  Users of mineral  resources shall
     be obliged:
1)   to utilize the mineral  resource field in accordance  with the purposes for
     which they were allocated;
2)   to ensure complete  geological analysis and the efficient and comprehensive
     utilization and protection of mineral resources;
3)   to ensure safety for persons, property and the environment;
4)   to bring  parcels  of land that were  damaged  during  the  process  of the
     utilization of mineral  resources  into a condition  acceptable for further
     utilization in public production;
5)   to comply  with all other  requirements  regarding  utilization  of mineral
     resources as established by Ukrainian legislation."



<PAGE>


                                                                     Page 5 of 9

a)   carry out  geological  search,  development  of mineral  deposits and other
     operations in accordance with the terms of a special permit (license);

b)   dispose of extracted resources unless otherwise is provided by the terms of
     a special permit (license).

Summarizing  the above, it is possible to conclude that unless and until mineral
resources  are  extracted  from  subsoil  they  remain in the  ownership  of the
Ukrainian people. Entities or individuals holding a relevant license,  depending
on the terms of such license,  have the right to use subsoil in order to search,
explore or extract mineral  resources.  Users of the subsoil obtain the right of
ownership to mineral resources once such resources are extracted from subsoil.

Treatment of entities that are not license holders

According to the Code(5),  if  entities,  which are not  mentioned in a license,
perform certain works in connection with the use of subsoil,  the responsibility
for  compliance  with the terms  established by the license falls on the license
holder.  Thus, the Code does not prohibit entities which do not hold the license
or which are not  mentioned  in the license  from  performing  certain  works in
connection  with the use of  subsoil  by the  license  holder.  It is not clear,
however,  whether  this  article of the Code should be  interpreted  as allowing
other  entities  to  carry  out  operations  indicated  in  the  license  (e.g.,
geological exploration,  pilot production or industrial exploitation) along with
license  holders  or  whether  it may be  interpreted  as  including  only works
supporting  these  operations   (e.g.,   supply  and  assembling  of  equipment,
provisions of certain  technology,  making available engineers and works, etc.).

----------------
          (5) Code
          "Article  16.  Licensing  activities  related  to the  utilization  of
mineral  resources  Licensing  activities  related to the utilization of mineral
resources is the exclusive procedure for granting special permissions (licenses)
for the use of mineral resources fields for designated purposes.
          Special  permissions  (licenses)  for using mineral  resources  within
certain  areas shall be granted to  specialized  enterprises,  institutions  and
organizations,  as well as to citizens who have the appropriate  qualifications,
and the  material,  technical and economic  capacities  for the  utilization  of
mineral resources.
          The granting of special permissions  (licenses) for the utilization of
mineral  resources  shall be carried out after the  preliminary  approval of the
appropriate  council of people's deputies for the allocation of a parcel of land
for designated purposes, with the except of those cases when there is no need to
allocate a parcel of land.
          In the event that certain types of work related to the  utilization of
mineral  resources  are  performed by persons who are not  designated by special
permission   (license),   the   responsibility  for  observation  of  conditions
stipulated in the special  permission  (license) shall be carried by the subject
that received the special permission (license).
          Special  limitations  stipulated by the current legislation of Ukraine
can be set in regard to  certain  types of  subsurface  utilization  or  certain
subsurface users.
          The special permissions  (licenses) for the use of subsurface shall be
provided by the State  Committee for Geology and the Use of Subsurface  with the
consent of the  Ministry of Ukraine on  Environmental  Protection  generally  on
competitive  terms and  according to  procedures  established  by the Cabinet of
Ministers of Ukraine."

<PAGE>


                                                                     Page 6 of 9

We believe that the second  interpretation  seems the more likely of the two as,
in our  opinion,  the Code  distinguishes  between  operations  as to the use of
subsoil, which is subject to licensing,  and particular works in connection with
the use of subsoil,  for the  performance of which a license holder may contract
with other entities.  In addition the JAA for the Management Committee to decide
operations.  The Management  Committee consists of four (4) representatives from
each Poltavanaftogas and CPC.

Ukrainian  legislation  does not restrict a license  holder from  selecting  any
forms of contracting with other entities for the performance of certain works on
services connected with the use of subsoil. We believe that the only restriction
is that a license holder cannot authorize other entities to carry out operations
that are indicated in the license and share  responsibility  for compliance with
the terms of the license and other required  documents (e.g.,  project for pilot
production,  etc.).  For  instance,  a license  holder may contract with another
entity for supply and assembly of certain equipment, etc. Also, a license holder
may  contract  with other  entities,  including  foreign  companies,  on a joint
operation basis,  which is allowed by Ukrainian  legislation.  The JAA is one of
the allowed forms of  contractual  relations  between a license holder and other
entities. According to the JAA, Ukrnafta performs the functions of the operator.
The rights and  obligations  of  Poltavanaftogas  as a division of Ukrnafta  are
defined  in  the   Agreement  "On   procedure  of   exploitation   of  wells  of
Rudivsko-Chervonozavodske  deposits  which are  jointly  owned by  Ukrnafta  and
American company Carpatsky Petroleum Corporation, collection, preparation of gas
and condensate from these wells" dated August 31, 1998. Therefore, we believe it
is very unlikely that CPC can be deemed to be carrying out operations  indicated
in the  license  without the right to do so.  Summarizing  this  section,  there
appear to be good  arguments to sustain the assertion  that CPC's  activities on
the RC  deposit  do not  contradict  Ukrainian  legislation  or the terms of the
license.

Rights of CPC under the JAA

As  mentioned  above,  a license  holder  has the right to  dispose  of  mineral
products  extracted  from the subsoil if it is not otherwise  established in the
terms of the license.  In this  respect we believe that a license  holder is not
restricted from selecting the legal grounds and mechanisms of such disposal. For
instance,  having a service  agreement  with another entity a license holder may
compensate  for  relevant  services  or works by means of a portion of  products
extracted from subsoil on the licensed  field.  Alternatively  if operating on a
joint operation basis a license holder and its partner(s) may allocate extracted
products or revenues from the sale of extracted  products on a pro rata basis or
in such a different way as may be agreed between them.

According to the Civil Code of Ukraine(6), parties to a joint activity agreement
have the right of joint shared ownership to the assets of such joint activities.
----------------
          (6) Civil Code of Ukraine
          "Article 432. Joint estate of the parties to an agreement
          To attain the goal  determined in Article 430 of this Code the parties
to an agreement on joint operations  shall make  contributions in terms of money
or other property or labour participation.
          The  money or  other  property  contributions  of the  parties  to the
agreement,  and the  property  created  or  obtained  as a result  of the  joint
operations thereof, shall constitute their condominium.
          Neither party to an agreement on joint operations shall be entitled to
dispose of its interest in the joint estate without consent of the other parties
to the agreement."



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                                                                     Page 7 of 9

Thus,  assets that are shown in the  accounts of the JAA,  including  equipment,
extracted  products,  cash received as compensation for the sold products,  etc.
belong to the parties to the JAA under joint shared ownership.  According to the
JAA,  hydrocarbons  produced  under the JAA are sold by the joint  activity  and
reflected in its accounts. CPC and Ukrnafta do not distribute products.  Rather,
they distribute  income from the sale of such products.  Thus,  according to the
mechanism  stipulated  by the JAA,  neither  Ukrnafta nor CPC can dispose of any
products  extracted  under the JAA.  This  means  that CPC and  Ukrnafta  cannot
dispose of these  assets  independently  (i.e.,  without  mutual  consent).  The
management  and  disposal of the assets of the joint  activities  must be agreed
between CPC and Ukrnafta in the JAA.  Summarizing the above we conclude that CPC
and Ukrnafta have the right of joint shared  ownership to the assets of the JAA.
Neither party to the JAA has the right to dispose of its share independently.

This  assertion is supported by the  provisions of law and the JAA applicable to
termination.  In case of  termination  of the JAA each  party  has the  right to
obtain  its  share  in the  joint  assets.  According  to the  JAA,  in  case of
termination  of the  JAA  before  the  established  date,  Ukrnafta  assumes  an
obligation  to  buy  the  share  due  to CPC at  prices  to be  estimated  by an
independent  licensed expert. This provision confirms the right of CPC to obtain
fair  compensation  for its  interest in the JAA and of joint  activity  created
assets.

Rights of CPC with regard to the existing license

The current  license  entitles  Ukrnafta to carry out the geological  search and
pilot  production of hydrocarbons  on the RC deposit.  According to the Code(7),
pilot production shall be carried out in accordance with a special project. Such
a project should be approved in accordance with the established procedure. We do
not comment in this letter on the procedure for the  preparation and approval of
these  projects.  In this  respect,  it is  sufficient  to mention that products
extracted under a pilot production project may be sold normally.  In other words
the holder of a license for pilot production has the right to sell  hydrocarbons
extracted within the limits established by the respective project.

For purposes of this letter we presume that Ukrnafta has a duly approved project
for the pilot  production on the RC deposit.  Thus based on the above,  Ukrnafta
and CPC may mutually sell hydrocarbons produced within the duly approved project
for the pilot production on the RC deposit through the JAA and CPC has the right
to obtain its share in the revenue from such sales.

In summary,  we may conclude that although  under the existing  license CPC does
not possess the right to carry out the geological search and pilot production on
the RC field  independently from Ukrnafta,  the JAA allows CPC to obtain its due
-----------------
          (7) Code
          "Article 20. Allocation of Mineral Resources for Geological Surveys
          Mineral  resources  shall be allocated  without  allocation  of mining
offsets after special  permission  (license) for  geological  surveys of mineral
resources is obtained for geological surveys,  including research and industrial
development of state mineral resources.
          Research and industrial  development of state mineral  resources shall
be carried out for the purpose of identifying their specific mining,  geological
and other  parameters and selecting  efficient  methods of extraction of mineral
substances  on the  basis  of  designs  for such  works  approved  by the  State
Committee on  Supervision  over Safety of Labour of Ukraine.  Mineral  resources
extracted  in the course of research and study  development  shall be subject to
sale in accordance with general procedures."


<PAGE>


                                                                     Page 8 of 9


share of income obtained from the sale of hydrocarbons  produced with the limits
established by the duly approved pilot production project.

Rights to obtain production license.

Based on the Code(8) the subsoil  user has a priority  right to prolong the term
of temporary use of subsoil.

This is uniformly understood, that the license holder for the specified area has
the right to prolong  the term of the  existing  license  or prolong  the use of
subsoil  by  means of  obtaining  new  license  for the  next  stage of  subsoil
development  (pilot production after  exploration,  and production license after
pilot production).

Please note, that pilot  production (as a specified  activity in the license) is
limited  in time and volume of  produced  minerals.  The Order of the  Ukrainian
Committee  on the Issues of Geology  and Subsoil Use No. 40 dated March 15, 2000
"On approval of the Provisions on procedure of  organization  and performance of
pilot  production  development  (PPD)  of the  deposits  of  minerals  of  state
importance",  Section  2.1(9) limits the term of PPD to five years,  and section
2.2(10) of the same Provisions limits the volume of minerals produced during PPD
to ten percent of the  preliminary  estimates of the minerals  deposits.  Taking
into account very recent issue of the Order No. 40, there is no  information  or
interpretation  wether and how its provisions may be applied retroactively (i.e.
to companies license holders which for example exceeded volume of ten percent of
the preliminary estimated reserves).

Conclusions and recommendations

In our opinion, using a JAA carries certain material disadvantages and potential
risks.  First,  the Code does not provide  entities that are not license holders
with the right to use subsoil and to dispose of extracted  products.  Thus,  the
rights that CPC has under the JAA are not established by the Code. However,  our
opinion we believe CPC could enforce its rights under the JAA through injunctive
relief in the Courts.

Second,  the  existing  license  was  granted  under a  special  condition  that
operations on the RC deposit would be based on the  agreement  between  Ukrnafta
and  Chernigivnaftogasgeologiya.  In  our  opinion,  this  means  that  if  this
agreement is  terminated or if the JAA is deemed  contradictory  to the terms of
this  agreement,  the existing  license may be at risk.  We are not aware of any
provision of the JAA which is contradictory to the agreement.

-----------------
          (8)
          (9)  Section  2.1 of the  Provisions:  "The time  period  for PPD of a
deposit,  the amount of and conditions for  extraction,  in so doing, of mineral
resources shall be substantiated in PPD project.  The time period for conducting
PPD of a deposit  cannot be beyond the limits of  validity  of a special  permit
(license)  for  geological  exploration  thereof  and shall not have to exceed 5
years."
          (10) Section 2.2 of the Provisions:  "The volume of mineral  resources
stipulated to be extracted during PPD shall not have to exceed 10 percent of the
pre-assessed mineral reserves in the deposit."



<PAGE>


                                                                     Page 9 of 9

Third,  in order to have the right to commercial  exploitation of the RC deposit
after the exploration and pilot  production  license expires because of the term
or the  volume  of  minerals  extracted,  it will be  necessary  to obtain a new
production license.  According to the JAA, CPC's position under the agreement on
this  issue  would  therefore  appear to be  secure,  unless  Ukrnafta  took the
unlikely  steps of  deliberately  acting  against the terms of the  agreement or
seeking to terminate it. In those cases CPC's interests would be in the hands of
the Courts.

Fourth,  the JAA is not mentioned in the license as a condition for carrying out
operations  under the  license.  In our  opinion,  this means that  operation of
Ukrnafta on the RC is not bound by the  necessity to maintain  activities  under
the JAA.  However we are aware of no instance  where  Ukrnafta or other  similar
entity has failed to honour an agreement  with a foreign  entity.  We would also
anticipate  that a Ukraine court would  entertain a proper  proceeding to enjoin
clearly wrongful activity by a party to an agreement similar to the JAA.

In summary, we conclude that under the JAA, CPC has certain rights in respect of
the mineral resources on the RC deposit the main of which is to obtain the share
of profits  from the sale of  hydrocarbons  extracted  within the project of the
pilot production.

To avoid some of the risks described in this letter, CPC may consider the option
of  concluding  a  production  sharing  agreement  under  the  recently  adopted
Ukrainian legislation.

This opinion is subject to the following qualifications:

1.       We are attorneys who practice in Ukraine,  and we express no opinion as
         to any  laws  of any  jurisdiction  other  than  the  laws  of  Ukraine
         currently in force in Ukraine which are applicable to Ukrnafta, CPC and
         the JAA. We express no opinion with respect to the applicability or the
         effect in connection with the matters referred to herein of the laws of
         any other  jurisdiction  or as to any matters of  municipal  law or the
         laws of any subdivision of Ukraine or of any local agencies.

2.       We have relied exclusively on the documents in arriving at the opinions
         expressed  herein and the documents  constitute the material  documents
         relating to the rights and obligations of Ukrnafta and CPC.

3.       With respect to all the  documents  that we reviewed,  we have assumed,
         but have not independently verified, the genuineness of all signatures,
         the  authenticity  of all documents  submitted to us as originals,  the
         conformity with the authentic  originals of all documents  submitted to
         us as copies.

4.       Our  opinions in this letter  with  respect to validity of  contractual
         relations between Ukrnafta and CPC are based on the assumption that the
         parties to the JAA and other  agreement  mentioned above did not and do
         not violate any  provisions of such  agreements  and that the terms and
         conditions of license are fully met by respective license holders.



<PAGE>




5.       The rights of Ukrnafta  and CPC  contained in the JAA may be limited by
         applicable bankruptcy, reorganization, insolvency or other similar laws
         of general application  relating to or affecting the enforcement of the
         parties' rights.

6.       The opinions  expressed in this letter are specific to the transactions
         and the documents referred to herein and are based upon the facts known
         to use, the documents examined by us and the law as of the date hereof,
         and should not be assumed to state general principals of law applicable
         to transactions  other then those which we have specifically  referred.
         Therefore,  this  opinion may not be relied upon by persons  other than
         the addressees,  their stockholders and counsel, and the Securities and
         Exchange Commission in the United States.

Yours sincerely,

VASIL KISIL & PARTNERS


/s/ Alexey N. Volkov
------------------------
Alexey N. Volkov
Attorney at Law

cc:   Mr. G. Sullivan

<PAGE>


                                  ATTACHMENT 1
                               TO OPINION LETTER

                                                                    APPROVED
                                         Chairman of the Board of "Ukrneft" JSC
                             .....................................B.V. Zaritsky
                                         September 22, 1995


                              AGREEMENT No. 410/95
                               on joint operations
Poltava                                                      September 14, 1995

         "Poltavaneftegas"  enterprise  and  "Carpatsky  Petroleum  Corporation"
company,  hereinafter  referred to as "Partners" have made and entered into this
agreement as follows:

                    DEFINITIONS OF THE PRINCIPAL TERMINOLOGY

Partners  shall be understood as  "Poltavaneftegas"  enterprise  and  "Carpatsky
Petroleum  Corporation"  company that have initially entered into this Agreement
and hereafter as any legal entities and individuals that join the Agreement.

Enterprise - "PNG" shall be understood as "Poltavaneftegas"  enterprise, a party
hereto.

Company  - "CPC"  shall  be  understood  as  "Carpatsky  Petroleum  Corporation"
company, a party hereto.

Managing  Committee shall be understood as the supreme  managing body consisting
of the managers and authorized  representatives of the Partners,  and authorized
to make  decisions  on the  principal  issues  of the joint  operations  such as
preparation of amendments and addenda hereto,  approval of the Joint  Operations
Program and Agreed Budgets, termination of the joint operations.

Joint Production  shall be understood as production  capacities and fixed assets
to be created in the course of joint operations hereunder.

Joint  Operations  Program shall be understood as a program of operations  for a
fiscal year based on the projects for  exploration  and operation of hydrocarbon
deposits,  including production and geophysical exploration of wells and strata,
a  set  of  works  related  to  boring  production  wells,  overhaul  of  wells,
construction   and  operation  of  objects,   collection,   transportation   and
preparation of produce.

Agreed Budget of Joint Operations shall be understood as a document  determining
the costs for performance of the Joint Operations Program.  The Agreed Budget of
Joint Operations shall account of all funding sources.

                                        1

<PAGE>



Licensee,   Licensees   shall  be  understood  as   "Chernigovneftegasgeologiya"
state-run geological enterprise and "Poltavaneftegas" enterprise.

Fiscal Year shall be understood as a calendar  year,  and, for the first year of
the joint  operations,  a time period as from  approval of the Joint  Operations
Program and Budget till the end of the calendar year.

Operating  Costs  shall be  understood  as costs for  production  of gas and gas
condensate  to be referred to the produce  self-cost  under the  legislation  in
force, less payments and deductions to the budget and non-budget funds.

Effective Date shall be understood as the date of signing this Agreement.

Engineer  Centre  shall be a working  body of the  Managing  Committee.  Upon an
assignment  of the latter and together  with the  services of  "Poltavaneftegas"
enterprise and "Carpatsky  Petroleum  Corporation"  company it shall develop the
Programs and Agreed Budgets of the joint operations,  and shall exercise control
over implementation thereof.

                                    ARTICLE I
                               GENERAL PROVISIONS

1.1     This Agreement has been entered into for the purpose of:

         - obtaining a license for production development of the deposit;

         - providing for organizational and economic conditions,  application of
         domestic and foreign technology for  intensification of exploration and
         operation of Rudovsko- Krasnozavodsk deposit, increasing the volumes of
         gas and gas condensate  production,  achieving high economic indicators
         when developing the deposit with complying with  requirements of labour
         safety,  subsoil and  environment  protection  under the legislation of
         Ukraine.

         -  developing  technical  solutions  with  accounting  of the  advanced
         foreign  expertise  implementation of which would provide for efficient
         development of the deposit and safe operation of the wells up to 6000 m
         deep (including abnormally high seam pressures);

         - earning profits by the partners hereof.

1.2      The subject-matter of this Agreement shall be:

         - exercising joint business initially related to pilot production
         operation of Rudovsko-Krasnozavodsk gas condensate deposit;

                                        2

<PAGE>



         - creation of the required  production  capacities  for the  subsequent
         production operation of the deposit (production wells) with application
         of the advanced  foreign  engineering and  technologies in the field of
         production and geophysical  exploration of wells and seams, overhaul of
         wells,  intensification  of  hydrocarbons  inflow,  boring wells and in
         other fields where advisable.

1.3      The partners shall combine their pecuniary, material, labour resources,
         productive,  technical  and  economic  potentials  for the  purpose  of
         implementation  of the joint  operations  goals listed in Sections 1.1,
         1.2.

1.4 The Partners shall maintain their legal and property independence.

1.5      The  Partners  shall incur losses from the joint  operations  hereunder
         independently (separately).

1.6      This  Agreement  cannot  preclude  performance by the Partners of their
         obligations as to third persons.

1.7      In the process of their joint operations the Partners shall be governed
         by the Legislation of Ukraine and this Agreement.

1.8      This Agreement shall be entered into for twenty (20) years. The Program
         and the Agreed  Budget of Joint  Operations  for the first  Fiscal Year
         shall have to be  prepared  within  three  months as from the date this
         Agreement is signed.  If the  practical  joint  business  operations on
         exploration  and  operation  of  Rudovsko-Krasnozavodsk  deposit is not
         launched  within  six (6)  months  as from the date this  Agreement  is
         signed,  the partners  shall  consider the issue of  repudiation of the
         Agreement.

                                   ARTICLE II
                    LICENSE FOR EXPLORATION AND OPERATION OF
                            THE HYDROCARBONS DEPOSIT

2.1      The license for exploration of  Rudovsko-Krasnozavodsk  deposit for the
         time   period  of  2  years  was   obtained  on  July  31,   1995,   by
         "Chernigovneftegasgeologiya" state-run geological enterprise.

2.2      License   No.  470  for  the  pilot   production   operation   of
         Rudovsko-Krasnozavodskoi  deposit  for the time  period of 2 years was
         obtained on July 31, 1995, by "Poltavaneftegas" enterprise.

2.3      The    relationship    between    "Poltavaneftegas"    enterprise   and
         "Chernigovneftegasgeologiya"  state-run geological  enterprise shall be
         determined by the following documents

                                        3

<PAGE>



         (Appendices 1 and 2):

         - "Agreement  (protocol) on conducting joint operations for exploratory
         and  production   operation  of   Rudivsko-Krasnozavodsk,   Mekhedivsk,
         Svystunovsk,  Svyrydivsk,  Chervonolutsk  gas  condensate  deposits  by
         "Chernihivnaftogasgeologiya"   state-run   geological   enterprise  and
         "Poltavanaftogas"  enterprise"  signed on May 16, 1995, by the Director
         General of  "Poltavaneftegas"  enterprise  V.P.  Kozak, by the Director
         General of "Chernigovneftegasgeologiya" state-run geological enterprise
         S.M.  Guinda,  approved by the Chairman of the Board of  "Ukrneft"  JSC
         B.V. Zaritsky and the Deputy Chairman of the State Committee of Ukraine
         for Geology B.O. Byalyuk;

         -  "Agreement  on  conducting  joint  operations  for  exploratory  and
         production operation of the wells of Rudivsko-Krasnozavodsk  deposit by
         "Chernigovneftegasgeologiya"   state-  run  geological  enterprise  and
         "Poltavanaftogas"  enterprise"  signed on May 16, 1995, by the Director
         General of  "Poltavaneftegas"  enterprise  V.P.  Kozak, by the Director
         General of "Chernigovneftegasgeologiya" state-run geological enterprise
         S.M.  Guinda,  approved by the Chairman of the Board of  "Ukrneft"  JSC
         B.V. Zaritsky and the Deputy Chairman of the State Committee of Ukraine
         for Geology B.O. Byalyuk.

         "Carpatsky  Petroleum  Corporation"  company  shall  bind  itself  with
         promoting performance of agreements available between "Poltavaneftegas"
         enterprise and "Chernigovneftegasgeologiya" SGE.

2.4      Prior to  expiration  of the  validity  term of the  License  for pilot
         production  operation  "Poltavaneftegas"  enterprise  shall apply for a
         License for production operation of Rudovsko-Krasnozavodsk deposit. The
         Company and  "Chernigovneftegasgeologiya"  SGE shall not  compete  with
         "Poltavaneftegas"  enterprise  with  respect  to  obtaining  the  above
         License and shall not facilitate other contenders in obtaining it.

                                   ARTICLE III
                    ORGANIZATION OF WORKS FOR EXPLORATION AND
                  OPERATION OF RUDOVSKO-KRASNOZAVODSKOI DEPOSIT

3.1      "PNG"  enterprise  and "CPC"  company  shall apply all efforts for
         putting the  laying-up  prospecting  holes and the ones with  drilling
         completion into pilot production  operation as early as possible,  for
         qualitative  and complete  exploration of wells and seams,  for timely
         transfer    of   the    obtained    data    to   the    services    of
         "Chernigovneftegasgeologiya"  state-run  geological  enterprise (SGE),
         and by  participating  in summarizing  assessment of the  geophysical,
         geological  and  production  data,  shall  facilitate  the services of
         "Chernigovneftegasgeologiya"   SGE   to   complete   calculations   of
         hydrocarbons  reserves in the deposit and to have them approved by the
         State Commission on Reserves by June of 1997.

                                        4

<PAGE>



3.2      In compliance with the provisions of Article 2 hereof "PNG"  enterprise
         has determined  that the contractor for drilling  operating wells shall
         be "Chernigovneftegasgeologiya" SGE.

         The Company shall take steps for technical re-equipment of the drilling
         teams with the advanced  foreign  machinery,  materials and technology,
         geophysical  support of the drilling that would provide for  decreasing
         well drilling duration and would facilitate for maintaining  filtration
         properties of the opened seams.

3.3      The Company shall secure  deliveries to Ukraine,  repair and service of
         the  progressive  technological  equipment for production and drilling,
         organize and fund performance of the highly technological operations in
         compliance  with the  subject-matter  of the  Agreement  and the  Joint
         Operations Program.



                                   ARTICLE IV
                     RIGHTS OF THE PARTNERS TO THE AGREEMENT

4 The Partners shall be entitled to the following:

4.1      To participate in solution of the issues  related to  co-ordination  of
         the joint  operations and in managing the Joint  Production  under this
         Agreement;

4.2      To  obtain  free of charge  all the  information  related  to the joint
         operations,  to have access to the accounting documents,  reporting, to
         the initial financial and all geological production,  technological and
         technical documents;

4.3      To receive into its  ownership a portion of the produce made under this
         Agreement or a share of the incomes from the joint operations.

                                    ARTICLE V
                     DUTIES OF THE PARTNERS TO THE AGREEMENT

5 The Partners to the Agreement shall have:

5.1      To perform decisions of the Managing Committee;

5.2      To perform their obligations  hereunder  including those related to the
         property participation in the Joint Operations in the amount, under the
         procedure and by the means stipulated  hereby and approved by the Joint
         Operations Programs;


                                        5

<PAGE>



5.3      Not to disclose commercial secrets and confidential information on the
         joint operations;

5.4      To bear other  obligations when stipulated by amendments  hereto and by
         the Joint Operations Programs approved by the Managing Committee.

5.5 In addition to the general obligations "PNG" enterprise shall undertake:

5.5.1    To use the license for operation of Rudovsko-Krasnozavodsk  deposit for
         the best interest of the joint operations.

5.5.2    To use for the best  interest  of the  joint  operations  the  existing
         improvement  objects and those under  construction in the deposit,  and
         the  wells  launched  but not  yet  put  into  operation  prior  to the
         Effective Date.

5.5.3    To incur the Operating  Costs related to production of  hydrocarbons of
         Rudovsko- Krasnozavodsk deposit.

5.5.4    To use  efficiently  for the best interest of the joint  operations the
         equipment  transferred  thereto  for  operation  and to  keep it in due
         technical  condition.  To provide "CPC" company with the conditions for
         control over application of the equipment transferred thereby for use.
5.5.5    To act as a customer for construction of wells and improvement  objects
         on the basis of a decision of the Managing Committee.

5.6      In   addition   to  the  general   obligations   "Carpatsky   Petroleum
         Corporation" company shall undertake:

5.6.1 In compliance with the Joint Operations Programs for its own account:

         - to provide for deliveries to Ukraine,  repair and  maintenance of the
         progressive mobile,  mountable  technological  equipment for production
         and repair-restoration  works, and to transfer it to the Enterprise for
         use;

         - to  provide  for  deliveries  to  Ukraine  and  to  transfer  to  the
         Enterprise  materials,  chemical reagents and stationary equipment as a
         contractual foreign investment;

         -  to  organize  and  fund  performance  of  the  highly  technological
         operations - hydraulic fracture of a seam, deep penetrating perforation
         under  repressure  with  providing  for  maximum  preservation  of  the
         trapping properties of a seam, etc.;

         - to indemnify 50% of the operating costs to "PNG" enterprise.


                                        6

<PAGE>



5.6.2    For  the  purpose  of  securing  performance  of the  Joint  Operations
         Programs to provide for deliveries to Ukraine,  repair and  maintenance
         of the progressive  technological  equipment and tools for drilling and
         to transfer  it to  "Chernigovneftegasgeologiya"  state-run  geological
         enterprise directly or through the Enterprise.

                                   ARTICLE VI
                    JOINT OPERATIONS PROGRAM AND ITS FUNDING

6.1 The volumes of works related to drilling,  repair and  improvement
         of the wells  with  distribution  among  the  customers  and  implicit
         contractors  shall  be  annually  approved  in the  form of the  Joint
         Operations Program. The Joint Operations Program shall have to contain
         volumes of supplies of material and technical  resources to be made by
         the Company  and shall  indicate  the form of transfer  thereof to the
         Enterprise or Ukrainian contractors, and the volumes of specific types
         of services rendered by foreign firms for the account of the Company.

6.2      The  Joint  Operations  Program  shall be  prepared  by the  respective
         services of the Enterprise with participation of the Engineer Centre.

6.3      The Joint Operations  Program shall have to be approved by the Managing
         Committee not later than thirty days prior to the beginning of a fiscal
         year   except   the  first  year  and  shall   contain   scientifically
         substantiated  volumes and types of works  related to  exploration  and
         operation of the deposit.

6.4      Repeated  approval of the Joint  Operations  Program shall be performed
         when  necessary  with  occurrance  of  new  circumstances   related  to
         conditions of operation of the deposit,  and when the incomes from sale
         of  hydrocarbons  and the  assets  allocated  by the  Partners  are not
         sufficient for  performance of volumes of the works earlier  planned by
         the Program.

6.5      The  Partners  are  intending  to fund the works  planned  by the Joint
         Operations Programs in the ratio:

         - "Poltavaneftegas" enterprise                                - 50%
         - "Carpatsky Petroleum Corporation" company                   - 50%

         "CPC" company shall indemnify to "PNG"  enterprise 50% of the operating
         costs under the requisites of "PNG" enterprise.

         When  necessary a Partner shall obtain  credits and settle with them on
its own.

6.6      During the first year of the joint operations "CPC" company shall
         indemnify at the

                                        7

<PAGE>



         contractual  price  the costs  incurred  by "PNG"  enterprise  prior to
         commencement  of the joint  operations  for the  objects of the further
         Joint Production.

6.7      For the purpose of  co-ordination  of the efforts of the Partners,  the
         Joint Operations Agreed Budget shall be developed.

6.8      The Agreed  Budget shall be approved by the Managing  Committee for the
         next fiscal year,  except the first year, 30 days prior to commencement
         thereof and shall be subject to revision  and  re-approval  in case the
         Joint Operations Program is amended.

6.9      Implementation  of the Joint  Operations  Program and the Agreed Budget
         shall be subject to control on the part of the Managing Committee.

                                   ARTICLE VII
                        BASIC AND ADDITIONAL HYDROCARBONS

7.1      Gas and gas  condensate  produced in the deposit  shall be divided into
         Basic and Additional Hydrocarbons.

7.2      The Basic  Hydrocarbons  shall be the volumes of gas and gas condensate
         produced from the wells  (Krasnozavodsk wells Nos. 2, 3, 4, 5, 6, 7, 8,
         9 and Rudovsk  wells Nos. 2, 4, 10, 100,  101, 105, 371) to be put into
         operation  by "PNG"  enterprise.  The Basic  Hydrocarbons  shall be the
         property  of the  Enterprise  and shall not be the product of the joint
         operations hereunder.

7.3      The  Additional  Hydrocarbons  shall  be the  volumes  of gas  and  gas
         condensate  produced  with  application  of the  production  capacities
         created  in the  deposit  after  the  Effective  Date.  The  Additional
         Hydrocarbons  shall be the difference  between the total volumes of gas
         and gas  condensate  production  and the volumes  referred to the Basic
         Hydrocarbons.  The Additional Hydrocarbons which are the produce of the
         joint  operations  shall be  distributed  between "PNG"  enterprise and
         "CPC" company at the ratio of 60 and 40% under Section 9.4.2.

                                  ARTICLE VIII
           ACCOUNTING OF THE PRODUCE, COSTS AND RESULTS OF PRODUCTION

8.1      The  Partners  shall  independently  keep  accounting  of  the  produce
         obtained in the process of the joint  operations,  costs and  financial
         results related to the joint operations hereunder.

         In compliance with Article 47 of the Decree of the Cabinet of Ministers
         "On  Conditions  for Foreign  Investing"  the Partners shall organize a
         separate  accounting and reporting related to the operations  connected
         with this Agreement.

                                        8

<PAGE>



8.2      The  Partners of the joint  operations  shall have the right of control
         over  and  audit  of all  accounting  documents  related  to the  joint
         operations  through  performance  of  audits  by  independent  auditing
         entities.  The  auditing  shall be carried out in  compliance  with the
         legislation  of  Ukraine  and  shall  be paid  for by the  Partners  in
         proportion to the shares  thereof.  The audits which are not stipulated
         by the plan, shall be paid for by the initiators thereof.

8.3      The Enterprise shall keep the  consolidated  accounting of the produce,
         costs and results of the joint operations.  All Partners shall promptly
         supply the  required  information  for  keeping  such  accounting.  The
         consolidated  accounting  shall be kept in terms of the currency of the
         actual payments,  and in terms of US dollars and the national  currency
         of  Ukraine.   The  data  of  the  consolidated   accounting  shall  be
         transferred to all partners to the Agreement on the systematic basis.

8.4      The accrued Capital Costs,  the accrued  operating costs and the Actual
         Shares  of either  Partner  in the  accrued  Aggregate  Costs  shall be
         determined quaterly on the basis of the consolidated accounting data.

8.4.1 The accrued Capital Costs of the Enterprise shall have to include:

         - the costs for  construction and overhaul of the wells and improvement
         objects  incurred  prior  to the  Effective  Date  and not  related  to
         production of the Basic Hydrocarbons;

         - the  costs  under  the  Joint  Operations  Programs  for  contractual
         drilling,   industrial   construction   and   overhaul  at  the  actual
         contractual  prices  with  accounting  of  the  cost  of  the  material
         resources given to the contractors;

         -  the  costs  under  the  Joint  Operations  Programs  for  industrial
         construction  and  overhaul  performed  through  its own efforts at the
         actual cost.

8.4.2 The accrued Capital Costs of the Company shall have to include:

         - the  costs  under  the  Joint  Operations  Programs  for  contractual
         drilling,   industrial   construction   and   overhaul  at  the  actual
         contractual  prices  with  accounting  of  the  cost  of  the  material
         resources given to the contractors;

         - the cost of the material resources transferred to the contractors or
         the Enterprise for the purpose of securing accomplishment of the joint
         Operations Programs;

         - depreciation deductions as to the equipment transferred to the
         Enterprise and Ukrainian contractors for use;


                                        9

<PAGE>



         - cost of the services  rendered by foreign firms at the expense of the
         Company under the approved Joint Operations Programs.

8.4.3    The Actual Share of either Partner shall be quarterly determined on the
         basis of the information about the Accrued Capital Costs.

8.5      The Accrued  Capital Costs and the Actual Shares of the Partners  shall
         be subject to approval by the Managing Committee.

8.6      The costs  related to the wells from which the Basic  Hydrocarbons  are
         extracted,  shall not be included into the Accrued  Capital Costs.  The
         Company can  operate  such wells  under a separate  agreement  with the
         Enterprise.

                                   ARTICLE IX
                       PROPERTY RELATIONS OF THE PARTNERS

9.1      The property  created or acquired by any of the Partners in  connection
         with  implementation  hereof  shall be the  property of the  respective
         Partner.  To perform the Joint  Operations  Program the property of one
         Partner can be  transferred  to the other  Partner or a contractor  for
         use.

9.2      The property  owned by any of the  Partners can be sold or  transferred
         into ownership of the other Partner  including as a foreign  investment
         in compliance with the legislation of Ukraine.

9.3      The  property  owned by any of the  Partners  and  used  for the  joint
         operations  hereunder,  can be sold or transferred  into ownership of a
         legal  entity or an  individual  which is not a Partner as agreed  upon
         with the managing Committee.

9.4      Hydrocarbons  produced in  Rudovsko-Krasnozavodsk  deposit shall become
         the property of the partners under the following terms and conditions:

9.4.1    the Basic Hydrocarbons are the property of the Enterprise.

9.4.2    the Additional Hydrocarbons are distributed between the Partners hereto
         depending  on the Shares of the  Partners in the  Consolidated  Accrued
         Costs.  "CPC" company with 50% share in the Consolidated  Accrued Costs
         shall be given 40% of the Additional Hydrocarbons.



                                       10

<PAGE>

                                    ARTICLE X
                  SALE OF THE PRODUCE FROM THE JOINT OPERATIONS


10.1     The produce  from the joint  operations  can be sold by the  Enterprise
         under an agreement with the Company or by either Partner independently.
         In the first case the payment for the sold  produce  shall be exercised
         under the requisites indicated by "CPC" company.

                                   ARTICLE XI
                  PROCEDURE FOR CONDUCTING THE JOINT OPERATIONS

11.1     Management  of the  general  business  related  to  performance  of the
         Agreement terms and conditions,  to organization  and management of the
         works,  representation  to  third  persons  shall  be  assigned  to the
         Enterprise  which is vested with the respective  authority on behalf of
         the Partners.  The  operative  management  of the  operations  shall be
         exercised by the charter managerial bodies of the Enterprise.

11.2     The  procedure  for selling the  produce and for  settlements  shall be
         determined hereby and specific agreements with produce buyers.

11.3     The control over the financial and business  operations of the partners
         shall  be  exercised  by the  auditing  bodies  of the  Partners  to be
         determined  by the  Partners.  In so doing the Partners  shall have the
         right to get familiarized  with any documents within the scope of their
         joint operations.

11.4     Solution of the issues related to exercising the joint operations which
         require  mutually  agreed  upon  solutions,  shall be carried  out when
         necessary through convening  meetings of the Managing  Committee by the
         Chairman  under  the plans for the  Committee  operation,  upon the own
         motion  of the  Chairman  or  upon a  request  of any of the  Partners.
         Decisions  may also be made through  exchange of letters,  cables,  fax
         messages, etc., notices in writing.

                                   ARTICLE XII
                    CO-ORDINATION OF THE JOINT OPERATIONS AND
                       MANAGEMENT OF THE JOINT PRODUCTION

12.1     Co-ordination  of the  joint  operations  and  management  of the Joint
         Production shall be exercised on the basis of decisions of the Managing
         Committee.   Initially  the  Managing  Committee  shall  consist  of  3
         representatives  from either  Partner.  The  Chairman  of the  Managing
         Committee is the Director General of "Poltavaneftegas" enterprise. Upon
         expiration of i year of the joint operations  hereunder the composition
         of the  Managing  Committee  shall  revised  in such a way in  order to
         account of the Actual  Share of the  Partners in the joint  operations.
         Further on the  composition of the Managing  Committee shall be revised
         in compliance with the actual shares every two years.

12.2     The decisions of the Managing Committee shall be made through
         individual unanimous vote.

                                       11

<PAGE>




12.3     The operative  control over the Joint  Production shall be exercised by
         the services of the Enterprise.

12.4     The  Enterprise in line with the Company and the Engineer  Centre shall
         prepare the  documents  required to the Managing  Committee  for making
         decisions on co-ordination of the joint operations. The Engineer Centre
         shall be formed upon a decision of the Managing Committee.

                                  ARTICLE XIII
                         CONFIDENTIALITY OF INFORMATION

13.1     Any information  transferred by one Partner to the other one within the
         effective  time period hereof and  containing  the  information  on the
         works performed,  produce, prices, negotiations and proposals including
         the terms and conditions  hereof disclosure of which may inflict losses
         to any of the Partners,  shall be confidential and shall not be subject
         to  disclosure  to third  persons  except the cases  stipulated  by the
         legislation in force.

13.2     Any other  information  proposed by any of the Partners or proposals or
         ideas,  shall  not have to be  considered  as  secret  or  confidential
         information  except the cases  when it is  specially  stipulated  in an
         additional agreement signed by representatives of the Partners.

                                   ARTICLE XIV
                      MUTUAL LIABILITY OF THE PARTNERS AND
                             SETTLEMENT OF DISPUTES

14.1     Either  Partner  shall  be  materially  liable  for  default  or  undue
         performance of the terms and conditions  hereof and appendices  hereto,
         and in case of  violation  thereof  shall  have to  indemnify  to other
         Partners direct losses occurred due to its fault.

14.2     The Partners to the Agreement  shall be exempted from  liability if the
         due performance  thereby of their obligations have been interfered with
         circumstances  of  insuperable  force,  particularly  acts of God,  war
         operations  or  mass  riots,  changes  in  the  legislation  in  force,
         substantial  reduction  in state  prices on gas or other  circumstances
         beyond the control of the Partners and affecting performance thereby of
         the  obligations  hereunder,  etc. The affected  Partner  shall have to
         notify  with  no  delay  the  other   Partner  on  occurrence  of  such
         circumstances,  anticipated  time  period  of their  effect  and  their
         termination.

14.3     Any  disputes  and  discrepancies,   differences  arising  from  or  in
         connection  with  this  Agreement  shall be  settled  through  amicable
         negotiations.  When the amicable settlement fails to be achieved within
         ninety (90) days as from the date of the notice of one of the

                                       12

<PAGE>



         Partners about  existence of a dispute,  discrepancy,  claim,  the case
         shall be submitted to the Arbitration.

14.4     In case of failure  to reach the agreed  upon  settlement  the  parties
         hereto shall aplly to the  International  Commercial  Arbitration Court
         with the  Chamber  of  Commerce  and  Industry  of  Ukraine in Kiev (3,
         Zhitomirskaya St.) for final settlement of the dispute.

                                   ARTICLE XV
                   PROCEDURE FOR REPUDIATION OF THE AGREEMENT

15.1     If upon the opinion of one of the  Partners it is unable to perform its
         obligations  due to  failure of the other  Partner  to comply  with the
         contractual  obligations  or due  to  occurrence  of the  circumstances
         interfering with the proper performance of the Agreement,  such Partner
         shall have to notify the other  Partners  in writing as to the  reasons
         causing repudiation of the Agreement.

15.2     The Agreement can be terminated prematurely, prior to expiration of the
         established  20 year  time  period,  when the  Partners  arrive  to the
         conclusion  that the  goals of the  Agreement  cannot  be  achieved  or
         continuation  hereof is not  advisable  due to  unprofitability  of the
         joint operations. In such case a Liquidation Commission shall be formed
         which  assumes all authority  for  completion  of the joint  operations
         including sale of the property,  repayment of debts,  settlements  with
         the Partners.

15.3     In case one of the Partners intends to withdraw from the composition of
         the  Partners  hereto,  it shall  have to notify  thereabout  the other
         Partner not later than 3 months prior to the date of withdrawal.

         Upon  expiration  of the above time period the Partner  shall be deemed
         departed from the composition of the Partners of the joint  operations,
         and within the next three months mutual settlements  therewith shall be
         carried  out with  reference  to  distribution  of the  produce and the
         profit.

15.4     In  case of  repudiation  of the  Agreement  due to  withdrawal  of the
         Licensee from the composition of the Partners,  it (the Licensee) shall
         within  three  (3)  months  indemnify  to the other  Partner  its costs
         related to acquiring or creating the property on its balance sheet.

15.5     A Partner  (except the Licensee) can be excluded from the number of the
         Partners to the  Agreement in case it fails to perform its  obligations
         under the Agreement.

15.6     In case of  repudiation  hereof or  withdrawal  herefrom,  the property
         transferred  by the Partners  each other for use,  shall be returned to
         the owner.

                                       13

<PAGE>


15.7     Article XV shall be subject to making it more precise in the process of
         development of the Working Program for the first fiscal year.

                                   ARTICLE XVI
                                  MISCELLANEOUS

16.1     As mutually  agreed upon by the Partners this  Agreement can be amended
         and supplemented including involvement of other Partners into the joint
         operations.

16.2     The Partners to the  Agreement  have agreed that within the time period
         of  development  of the  Program  and the  Agreed  Budget  of the Joint
         Operations, an Accounting Agreement shall be prepared and signed.

16.3     The Partners represent:

         - that they have all powers required to sign this Agreement;

         - that they will not take actions that can be  detrimental to goals and
tasks hereof.

16.4     This Agreement has been made on 14 pages and signed in 2 duplicates of
         equal legal force, one for each of the Partners.

                          THE AGREEMENT HAS BEEN SIGNED

For "Poltavaneftegas" Enterprise


             V.P. Kozak
         (Director General)

For "Carpatsky Petroleum Corporation"
Company

              L. Texas
         (Company President)
                                     AGREED

Article 2 and Sections 3.1, 3.2
Director General of
"Chernigovneftegasgeologiya" state-run
geological enterprise

             S.M. Guinda
                                    , 1995



                                       14

<PAGE>

                                  ATTACHMENT 2
                               TO OPINION LETTER


                                    AGREEMENT
          on introducing amendments and addenda to agreement No. 410/95
               dated September 14, 1995, on joint activity between
 "Poltavanaftogas" enterprise and "Carpatsky Petroleum Corporation" company, USA

Poltava
London                                                        October 15, 1996

         "Poltavanaftogas"  enterprise  and  "Carpatsky  Petroleum  Corporation"
company, USA, on the basis of the provisions of the Law of Ukraine "On Treatment
of Foreign  Investments"  passed by the  Verkhovna  Rada of Ukraine ans put into
effect as from  April 16,  1996,  and on the basis of  by-laws  adopted  for the
purpose of creating the mechanism for  implementation  of the  provisions of the
above law, have agreed as follows:

1        Amendments  and addenda shall have to be introduced  into agreement No.
         410/95 entered into between them on September 14, 1995, with setting it
         forth in the following  (new) wording making the title of the agreement
         more precise:

                              AGREEMENT No. 410/95
      as of September 14, 1995, on joint investment and production activity
       for development and exploitation of Rudivsk-Chervonozavodsk deposit

         "Poltavanaftogas"  enterprise  and  "Carpatsky  Petroleum  Corporation"
company,  USA,  hereinafter  referred to as the "Partners" have made and entered
into this agreement as follows:

                       DEFINITIONS OF THE PRINCIPAL TERMS

Partners  shall have to be  understood  as legal  entities  that have  initially
entered into this  Agreement,  and further on any legal entities and individuals
that can join the Agreement.

Enterprise  shall  have to be  understood  as  "Poltavanaftogas"  enterprise,  a
partner to this Agreement.

Company shall have to be understood as "Carpatsky Petroleum Corporation" company
registered in the State of Texas, USA, a partner to this Agreement.

Joint  Activity  shall have to be  understood as activity  based on  cooperation
between the Partners to this  Agreement  and  stipulating  division of risks and
results of such activity.

Investments  shall have to be understood as property and intellectual  valuables
contributed  into development and  exploitation of  Rudivsk-Chervonozavodsk  gas
condensate deposit in compliance with this Agreement.

                                        1

<PAGE>



Initial  Contribution  shall have to be understood as property and  intellectual
valuables that initially  (within 1996) are contributed by the Partners onto the
Individual  Balance Sheet for the purpose of exercising  the Joint  Activity for
development and exploitation of Rudivsk- Chervonozavodsk gas condensate deposit.

Development of Rudivsk-Chervonozavodsk  deposit shall have to be understood as a
package  of works  carried  out under  the  projects  for the  pilot  production
operation of the deposit and performed during  exploratory  works in the deposit
prior to approval of the reserves  under the  procedure  prescribed by the State
Commission for Reserves.

 Exploitation of Rudivsk-Chervonozavodsk  deposit shall have to be understood as
a package of works carried out within the time period of production exploitation
of the deposit within the volumes determined by the exploitation project.

Managing  Committee  shall have to be  understood  as the supreme  leading  body
composed of  executives  and  authorized  representatives  of the  Partners  and
authorized  to make  decisions on the principal  issues of the Joint  Activity -
preparation of amendments and addenda to this  Agreement,  approval of the Joint
Activity  Programs  and Agreed  Budgets,  exercising  control  over  performance
thereof,  selection of contractors  for performance of works related to drilling
boreholes, to comprehensive  geophysical exploration,  to hydrofracture of seams
and/or other works of high value,  to  coordination of contracts for performance
of works to the amount of over two million US dollars and contracts for purchase
of the property to be  transferred  onto the Balance Sheet of the Joint Activity
to the amount over five  hundred  thousand US dollars,  to  coordination  of the
terms and conditions for termination of the Joint Activity.

Joint Venture  shall have to be  understood as the object of the Joint  Activity
under this  Agreement  namely the  production  capacities  and capital  funds of
Rudivsk-Chervonozavodsk  deposit initially  allotted for the Individual  Balance
Sheet, and created in the process of the Joint Activity.

Individual  Balance Sheet,  Balance Sheet of the Joint Activity shall have to be
understood  as the  individual  balance  sheet of  "Poltavanaftogas"  enterprise
designated for keeping records of the property  combined by the Partners to this
Agreement for the purpose of implementing  the Joint Activity and created in the
process of such activity,  and for keeping records of business  operations under
the Joint Activity and of financial results.

Individual  Settlement  Account  shall have to be  understood  as an  individual
settlement  account to be opened with one of the banks of Ukraine  for  ensuring
the Joint Activity.

Agreed  Budget of the Joint  Activity  shall have to be understood as a document
that determines the expenses for performance of the Joint Activity Program.  The
Agreed  Budget  of the Joint  Activity  shall  account  of all  funding  sources
including  the own assets of the  Partners  designated  for  acquiring  material
resources for the Joint Activity.

                                        2

<PAGE>




Licensee, Licensees shall have to be understood as  "Chernihivnaftogasgeologiya"
state-run geological enterprise and "Poltavanaftogas" enterprise.

Fiscal  Year shall have to be  understood  as a calendar  year and for the first
year of the Joint  Activity  the time  period  from the date of  transfer of the
Initial Contribution of "Poltavanaftogas" enterprise onto the Individual Balance
Sheet through to the end of the calendar year.

Capital  Costs shall have to be  understood as one time expenses for creation of
the capital funds on Rudivsk-Chervonozavodsk deposit which expenses are incurred
in compliance  with the terms and  conditions of this  Agreement.  Current Costs
shall  have to be  understood  as the  expenses  for  production  of gas and gas
condensate which expenses under the legislation of Ukraine are calculated on the
basis of the  incomes  from sale of the  produce  when  determining  the taxable
profit (referred to self-cost of the produce).

Effective  Date shall have to be understood as the date  Agreement No. 410/95 is
agreed upon by the leading  bodies of  "Ukrnafta"  OJSC,  that is September  22,
1995.

Engineering  Centre  shall  have to be  understood  as a  working  body with the
Managing Committee.

                                    ARTICLE I
                               General Provisions

1.1     This Agreement is made and entered into for the purpose of:

         - earning incomes by the Partners hereof;

         -  providing  for  organizational  and  economic  conditions  for joint
         investment of development and  exploitation of  Rudivsk-Chervonozavodsk
         gas and gas condensate  deposit,  application of the advanced technical
         facilities of domestic and foreign origin for intensifying  exploration
         and operation thereof,  increasing volumes of production of gas and gas
         condensate, achieving high economic indices when exploiting the deposit
         with compliance with  requirements of labour safety,  protection of the
         subsoil and the environment;

         - development of engineering  solutions with accounting of the advanced
         foreign experience  implementation of which would provide for efficient
         exploitation of the deposit and safe  performance of works in the wells
         over 5000 m deep (under abnormally high seam pressures including).

                                        3

<PAGE>



1.2      The subject-matter of this Agreement shall be:

         -  exercising  the  joint  investment  activity  with  creation  of the
         required production capacities for operation of Rudivsk-Chervonozavodsk
         gas  and  gas  condensate  deposit,   implementation  of  the  advanced
         engineering and technologies in the field of productive and geophysical
         exploration  of  the  wells  and  seams,  overhaul  of  the  wells  and
         improvement thereof;

         - exercising  the joint  production  and business  activity  related to
         production of gas and gas condensate in the process of the  development
         and  exploitation  of Rudivsk-  Chervonozavodsk  gas and gas condensate
         deposit with  application  of production  capacities  and capital funds
         created in the process of the investment activity;

         - division  of the incomes  from the Joint  Activity in the form of the
         balance profit or produce.

1.3      The Partners shall combine their pecuniary, material, labour resources,
         production,  technical  and  economic  potentials  for the  purpose  of
         realization of the targets of the Joint Activity.

1.4      The  Partners  shall  keep  their  legal  independence.   The  property
         independence of the Partners shall be restricted in part of disposal of
         the property on records of the Individual Balance Sheet.

1.5      The Partners shall bear  liability  under the  obligations  kept on the
         records of the  Individual  Balance Sheet in proportion to their shares
         in  investment of the Joint  Activity.  In case of bankruptcy of one of
         the Partners,  the liability under the obligations  kept on the records
         of the Individual  Balance Sheet shall be re-distributed  between other
         Partners  in  proportion  to their  shares in  investment  of the Joint
         Activity.

1.6      In case the  obligations  are not kept on the records of the Individual
         Balance Sheet but rather assumed by one of the partners on the basis of
         the powers of attorney of all other Partners,  the liability under such
         obligations  shall be borne by all Partners in proportion and under the
         procedure  set forth in Section  1.5.  The  provisions  of this Section
         shall in no way expand to the  obligations  related to the acquiring by
         the  Foreign  Partner of the  equipment  or other  property  subject to
         supplies to Ukraine as the foreign  investment (a contribution into the
         Joint Activity).

1.7      The risk of  accidental  loss or  damage  of the  property  kept on the
         records of the  Individual  Balance  Sheet and being the general  share
         property, shall be borne by the Partners according to their shares.


                                        4

<PAGE>



1.8      The risk of accidental loss of the property used by the Partners in the
         operations related to performance of this Agreement but not transferred
         onto the  Individual  Balance  Sheet,  shall be borne by the respective
         Partner.

1.9      This Agreement  cannot  interfere  with  performance by the Partners of
         their obligations related to third persons.

1.10     In the process of their Joint  Activity the Partners  shall be governed
         by the legislation of Ukraine and this Agreement.

1.11     Amendments to this Agreement including  amendments caused by joining it
         by new Partners, shall be introduced upon the mutual consent.

1.12     Termination  of any  section  hereof in  connection  with such  section
         becoming  contradictory to changes in the legislation of Ukraine, shall
         not involve  termination  of the Agreement as a whole.  In case of such
         contradictions  available the Partners shall  introduce  amendments and
         addenda to the text of the Agreement.

1.13     This Agreement shall be entered into for twenty (20) years.

                                   ARTICLE II
       Terms and Conditions for Investment of Development and Exploitation
                       of Rudivsk-Chervonozavodsk Deposit

2.1      The Partners  intend to invest the Joint  Activity on  exploitation  of
         Rudivsk-   Chervonozavodsk  gas  and  gas  condensate  deposit  at  the
         following ratio:

         - "Poltavanaftogas" enterprise                                - 50%

         - "Carpatsky Petroleum Corporation" company                   - 50%

2.2      "Carpatsky  Petroleum  Corporation" company shall in 1996 transfer onto
         the Individual  Balance Sheet the  Investments in the form of pecuniary
         assets  and  property  to be its  Initial  Contribution  into the Joint
         Activity to the total amount of 4 800 thousand US dollars including:

         - pecuniary assets in terms of free convertible foreign currency -
         2 500 thousand US dollars;

         - property  (equipment,  tools,  transport facilities and materials) to
         the amount of 2 300 thousand US dollars.

2.3      The  list of  the property  contributed in  1996  as  the Investment of
         "Carpatsky   Petroleum  Corporation"  company  is given in  Appendix  1

                                        5

<PAGE>



         hereto.  Under  an additional  agreement of the Partners Appendix 1 can
         be  re-approved  without  changing  the  total  amount  of the  Initial
         Contribution and revision of other provisions hereof.

2.4      In 1996  "Poltavanaftogas"  enterprise  shall provide for transfer from
         the balance sheet of the principal activity onto the Individual Balance
         Sheet of the property including the objects of uncompleted construction
         assessed under the prescribed  procedure by specialized entities having
         relevant licenses.

2.5      Commencing  with 1997 investment of the Joint Activity shall be carried
         out in  compliance  with the Joint  Activity  Programs  and the  Agreed
         Budget.  The  Partners  shall agree that the  approved  Joint  Activity
         Program and the Agreed Budget of any year are the Appendices hereto.

2.6      Subsequently  investment of the Joint  Activity shall be carried out by
         the  Partners  in  compliance  with the Joint  Activity  Programs  with
         observance of the relations set forth in Section 2.1. At the same time,
         if any of the Partners  declares that it is not able to provide for 50%
         of  the  investment  required  for  performance  of the  optimal  Joint
         Activity  Program  and the other  Partner  can cover the deficit of the
         financial  assets,  the  Managing  Committee  can  make a  decision  on
         altering  for a specific  time  period the  proportional  shares of the
         Partners in the investment through amending the Agreed Budget.



                                   ARTICLE III
         Licenses for Exploration and Operation of Hydrocarbon Deposits

3.1      The license for  exploration of  Rudivsk-Chervonozavodsk  deposit for a
         time  period of 2 years was  obtained  by  "Chernihivnaftogasgeologiya"
         state-run geological enterprise (SGE) on July 31, 1995.

3.2      The license for pilot production  operation of  Rudivsk-Chervonozavodsk
         deposit for a time period of 2 years was obtained by  "Poltavanaftogas"
         enterprise on July 31, 1995.

3.3      The  following   documents   shall  be  considered  as  mutual  between
         "Poltavanaftogas" enterprise and "Chernihivnaftogasgeologiya" SGE:

         -  "Agreement  (protocol)  on  conducting  the  joint  works  of  pilot
         production    operation   of    Rudivsk-Chernovozavodsk,    Mekhedivsk,
         Svystunkiv,  Svyrydivsk,  Chervonolutsk gas and gas condensate deposits
         by  "Chernihivnaftogasgeologiya"  state-run  geological  enterprise and
         "Poltavanaftogas"  enterprise"  signed on May 16, 1995, by the Director
         General of  "Poltavanaftogas"  enterprise  V.P.  Kozak, by the Director


                                        6

<PAGE>


         General   of    "Chernihivnaftogasgeologiya"    state-run    geological
         enterprise  S.M.  Guinda,  approved  by  the  Chairman  of the Board of
         "Ukrnafta"  JSC B.V.  Zaritsky  and the  Deputy  Chairman  of the State
         Committee of Ukraine for Geology B.O. Byalyuk;

         - "Agreement on conducting joint works of pilot production operation of
         the      wells     of      Rudivsk-Chernovozavodsk      deposit      by
         "Chernihivnaftogasgeologiya"   state-run   geological   enterprise  and
         "Poltavanaftogas"  enterprise"  signed on May 16, 1995, by the Director
         General of  "Poltavanaftogas"  enterprise  V.P.  Kozak, by the Director
         General of "Chernihivnaftogasgeologiya" state-run geological enterprise
         S.M.  Guinda,  and approved by the Chairman of the Board of  "Ukrnafta"
         JSC B.V.  Zaritsky  and the Deputy  Chairman of the State  Committee of
         Ukraine for Geology B.O. Byalyuk.

         "Carpatsky  Petroleum  Corporation"  company  shall  bind  itself  with
         promoting performance of agreements available between "Poltavanaftogas"
         enterprise and "Chernihivnaftogasgeologiya" SGE.

3.4      Prior to  expiration  of the  validity  term of the  License  for pilot
         production  operation  "Poltavanaftogas"  enterprise  shall apply for a
         License for  production  operation of  Rudivsk-Chervonozavodsk  deposit
         under the procedure  established in "Ukrnafts" JSC. The application for
         obtaining  the license  shall have to set forth that  "Poltavanaftogas"
         enterprise acts for the best interests of the Partners hereto.  For the
         purpose of formulation of the contractual  terms and conditions for use
         of the subsoil of Rudivsk-  Chervonozavodsk  deposit  "Poltavanaftogas"
         enterprise  with  participation  of  specialists  of the Company  shall
         develop the draft License  Agreement and shall  organize its signing by
         the relevant  governmental  authorities.  The Partners hereto shall not
         compete with  "Poltavanaftogas"  enterprise  on issues of obtaining the
         above License,  and shall not facilitate  directly or indirectly  other
         contenders in obtaining it.


                                   ARTICLE IV
              Organization of Works on Exploration and Operation of
                         Rudivsk-Chervonozavodsk Deposit

4.1      "Poltavanaftogas"  enterprise shall be recognized as the Operator as it
         is traditionally  understood in the  international oil and gas business
         and shall carry out the whole  organizational  and  practical  activity
         related  to  operation  of  Rudivsk-Chernovozavodsk  deposit.  Specific
         operations related to development of the deposit, drilling and overhaul
         of  the  wells  under  decisions  of  the  Managing  Committee  can  be
         performed/organized  by the Company on its own or with  involvement  of
         foreign contractors.

4.2      In compliance with the provision of Article 2 hereof the Enterprise has
         determined  that  "Chernihivnaftogasgeologiya"  SGE  and  the  drilling
         entities  of  "Ukrnafta"  JSC shall  act as  contractors  for  drilling
         production wells.

                                        7

<PAGE>




         The Company shall implement measures for technical  re-equipment of the
         drilling  teams  with  foreign  machinery,  materials  and  technology,
         geophysical  support of the  drilling  that would  provide for reducing
         duration of wells  drilling and would  facilitate  preservation  of the
         filtering  properties of seams to be opened.  The specific measures for
         technical re-  equipment of drilling  teams shall have to be stipulated
         by the Joint Activity Programs.

         In  November,  1996,  the  Company  will  receive  a  working  group of
         Ukrainian  specialists  in Houston,  USA,  and will give them chance to
         study the experience of operation of the drilling  entities of USA. The
         specialists of the Company and the Ukrainian  specialists shall jointly
         prepare  proposals  on  stage-by-stage  technical  re-equipment  of the
         Ukrainian   drilling  entities   involved  in   Rudivsk-Chernovozavodsk
         deposit.

4.3      The Enterprise and the Company shall implement measures for accelerated
         putting into pilot production operation of prospecting  boreholes those
         which are in laying-up condition or being drilled,  for qualitative and
         complete  exploration of the wells and seams, for timely  submission of
         the obtained data to services of "Chernihivnaftogasgeologiya" state-run
         geological  enterprise  (SGE), and, by participating in the summarizing
         evaluation  of  geophysical,  geological  and  production  data,  shall
         facilitate   the  services  of   "Chernihivnaftogasgeologiya"   SGE  in
         completing  calculations  of  hydrocarbon  reserves  in the deposit and
         approval thereof by the State Commission for Reserves by June of 1997.

4.4      The Company shall provide for supplies into Ukraine of the  progressive
         equipment  and tools for  operation  of the wells,  their  overhaul and
         exploration,   shall  organize   performance  of  highly  technological
         operations by foreign contractors in compliance with the subject-matter
         of the Agreement and the Joint Activity Program.

                                    ARTICLE V
                     Rights of the Partners to the Agreement

5.1 The Partners shall have the following rights:
5.1.1    To participate in solution of the issues  related to  co-ordination  of
         the Joint  Activity  and in  managing  the  Joint  Venture  under  this
         Agreement;

5.1.2    To  obtain  free of charge  all the  information  related  to the Joint
         Activity, to have access to the accounting documents, reporting, to the
         initial  financial and all  geological  production,  technological  and
         technical documents;

5.1.3    To  receive a portion  of the  incomes  from the  Joint  Activity  or a
         portion of the produce extracted under this Agreement.


                                        8

<PAGE>



                                   ARTICLE VI
                  Obligations of the Partners to the Agreement

6.1 The Partners to the Agreement shall have:

6.1.1 To comply  with this  Agreement  and  perform  decisions  of the  Managing
Committee;

6.1.2    To perform their obligations  hereunder  including those related to the
         property  participation in the Joint Activity in the amount,  under the
         procedure and by the assets stipulated hereby and approved by the Joint
         Activity Programs;

6.1.3    Not to disclose commercial secrets and confidential information on the
         Joint Activity;

6.1.4    To bear other  obligations when stipulated by amendments  hereto and by
         the Joint Activity Programs approved by the Managing Committee.

6.2      In addition to the general obligations the Enterprise shall undertake:

6.2.1    To  perform   the   functions   of  the   Operator  on   operation   of
         Rudivsk-Chernovozavodsk deposit including keeping the accounting of the
         property of the Partners to be transferred for the Joint Activity,  and
         the  operations  under the Joint  Activity  on the  Individual  Balance
         Sheet;

6.2.2    To use the license for  operation of  Rudovsko-Chernovozavodsk  deposit
         for the best interest of the Joint Activity;

6.2.3    To use for  the  best  interest  of the  Joint  Activity  the  existing
         improvement  objects and those under  construction in the deposit,  and
         the  wells  launched  but not  yet  put  into  operation  prior  to the
         Effective Date;

6.2.4    To serve the objects of the Joint  Activity (the Joint  Venture) by the
         Enterprise  personnel,  to exercise  day-today  management of the Joint
         Venture, to perform specific technological operations on the conditions
         of cooperation;

6.2.5    To use  efficiently  for the best  interest of the Joint  Activity  the
         equipment transferred thereto for use under the terms and conditions of
         individual  agreements and designated  for  application  when rendering
         services  to the  Joint  Venture.  To  provide  the  Partners  with the
         conditions for control over  application of the equipment given thereby
         for use;

6.2.6 To act as a customer for construction of wells and improvement objects.

6.3     In addition to the general obligations "Carpatsky Petroleum Corporation"
        company shall undertake:

                                        9

<PAGE>





6.3.1    To supply the Enterprise with  scientific and technical  information on
         the advanced  achievements in the field of exploration,  development of
         hydrocarbon  deposits,  production of oil, gas and gas  condensate,  to
         organize the training of specialists abroad.

6.3.2    To ensure  participation  of foreign  specialists in development of the
         Working programs and the agreed Budgets of the Joint Activity.

                                   ARTICLE VII
                     Joint Activity Program and its Funding

7.1      The volumes of works related to drilling, repair and improvement of the
         wells with  distribution  among the customers and implicit  contractors
         shall be annually  approved in the form of the Joint Activity  Program.
         The Joint Activity Program shall have to contain volumes of supplies of
         material  and  technical  resources  to be  made  by the  Company  with
         indicating the form of transfer  thereof to the Enterprise or Ukrainian
         contractors,  and the volumes of specific types of services rendered by
         foreign firms.

7.2      The Joint Activity Program shall be prepared by the respective services
         of the Enterprise with participation of the Engineer Centre.

7.3      The Joint Activity Program shall be approved by the Managing  Committee
         not later than thirty days prior to the  beginning of a Fiscal Year and
         contain scientifically substantiated volumes and types of works related
         to efficient exploitation of the deposit under the projects.

7.4      Repeated approval of the Joint Activity Program shall be performed when
         necessary with occurrence of new circumstances related to conditions of
         operation  of  the   deposit,   and  when  the  incomes  from  sale  of
         hydrocarbons   and  the  assets  allocated  by  the  Partners  are  not
         sufficient for  performance of volumes of the works earlier  planned by
         the Program.

7.5      The  Joint  Activity  programs  shall be  approved  on the basis of the
         mutual consent of the Partners.  In case contradictions  arise with the
         Partners  in  connection  with the  principal  positions  of the  Joint
         Activity Program, they can be separated as the Great Risk Operations as
         stipulated in Article IX.

7.6      The    Partners    shall    have   no   right    to   carry    out   on
         Rudovsko-Chernovozavodsk  deposit the works that are not  stipulated by
         the Joint  Activity  Program  or are not  separated  as the Great  Risk
         Operations.

7.7      The demand  in financial  resources for  conducting  exploration  works
         stipulated  by  the Joint  Activity  Program  and the works  related to
         creation of the capital funds, shall be covered at the expense of:


                                       10

<PAGE>



         - pecuniary contributions (investments) of the Partners that are
         transferred onto the Individual Balance Sheet;

         - pecuniary  assets of the Partners that are used thereby for acquiring
         or  creating  the  property  in  the  form  of   equipment,   transport
         facilities,   structure  elements,   other  material;   resources,  and
         structures,  buildings,  transmitters  transferred  onto the Individual
         Balance Sheet.

         The demand in financial resources for performance of operations related
         to production of gas and gas condensate (for current  expenses)  during
         the initial period of activity under this  Agreement,  shall be covered
         at the expense of the pecuniary assets transferred by the Partners onto
         the  Individual  Balance Sheet and  subsequently  at the expense of the
         incomes from sale of the produce of the Joint Activity.

7.8      For the purpose of  co-ordination  of the efforts of the Partners,  the
         Agreed  Budget of the Joint  Activity  shall be  developed.  The Agreed
         Budget  shall be  developed  on the basis of the  anticipated  expenses
         under the operations performed by "Poltavanaftogas"  enterprise, of the
         market  prices on services  and produce of  contractors  and  suppliers
         (hereinafter  - the  Settlement  Prices),  of the  volumes of works and
         services, of the rates of taxation and compulsory payments.

7.9      The Agreed  Budget shall be approved by the Managing  Committee for the
         next fiscal year thirty days prior to commencement thereof and shall be
         subject to revision and re- approval in case of alteration of the Joint
         Activity program,  and in case the settlement prices are changed due to
         objective  reasons.  The Agreed Budget shall be formed with  compliance
         with the  provisions  of Section  2.1. At the same time,  if one of the
         Partners  cannot fund 50% of expenses  required for  performance of the
         optimal  Joint  Activity  Program  and the other  Partner can cover the
         deficit of the financial assets,  the Managing  Committee can stipulate
         other ratio in funding as stipulated by Section 2.6 hereof.

7.10     If within a year it becomes  evident  that any of the  Partners  cannot
         fund the expenses stipulated by the Agreed Budget for the current year,
         it shall notify  other  Partners  thereabout.  The latter shall have to
         notify  within 30 days as to their intent and possible  time period for
         funding  the  expenses  that are not  covered by the  Partner  that has
         notified  thereabout.  Within the subsequent 15 days the Partners shall
         arrive to the consent on such issue or shall begin a special sitting of
         the Managing Committee that will decide the issue of updating the Joint
         Activity Program and the Agreed Budget.

7.11     A Partner  shall have no right,  with no consent of the other  Partner,
         to fund  performance  of  the Joint  Activity  Program at the rate that
         exceeds the amounts stipulated by the Agreed Budget.


                                       11

<PAGE>




7.12     The Company shall place pecuniary  assets for the purposes of the Joint
         Activity  from its accounts with foreign banks and from accounts of its
         representative  office in Ukraine to the Individual  Settlement Account
         to   be   opened   by    "Poltavanaftogasgeologiya"    enterprise   for
         implementation of the goals of this Agreement.

7.13     "Poltavanaftogas" enterprise shall in operative way (not less than once
         a decade)  inform the  Company  as to the flow of the  assets  obtained
         therefrom (through submission of registers of the credit payment orders
         received from the serving bank).

7.14     Performance  of the Joint  Activity  program  and of the Agreed  Budget
         shall be  controlled  by the  Managing  Committee  that  considers  the
         results  of  operation  for the first  half of the year and the  fiscal
         year.

                                  ARTICLE VIII
    Project of Pilot Production Operation of Rudovsko-Chernovozavodsk Deposit

8.1      The Partners have agreed that the project of pilot production operation
         developed by "UkrNGI" JSC in 1996 and approved  through the established
         procedure,  shall be the basis for  development  of the Joint  Activity
         programs.

8.2      The Partners shall organize  systematic control over realization of the
         project  of  pilot  production  operation  of  the  deposit  and,  when
         necessary, shall carry out the works on adjusting the above project and
         its re-approval.

                                   ARTICLE IX
                              Great Risk Operations

9.1      The Great Risk Operations  herein shall be understood as implementation
         of the projects that are not included into the Joint Activity  Programs
         due to disconsent of one of the Partners.

9.2      The following can be considered as the Great Risk Operation:

         - performance of the additional seismic survey on the lots where
         similar works have been carried out;

         - performance of three dimensional seismic explorations;

         - drilling additional prospecting boreholes and individual outstripping
         production  wells  in excess of the volumes  stipulated by the projects
         of pilot production operation  that has been in effect as on the moment
         of signing this Agreement.

                                       12

<PAGE>




9.3      The  Great  Risk  Operations  can  be  conducted  by  "Poltavanaftogas"
         enterprise at its own expense or can be funded by "Carpatsky  Petroleum
         Corporation" company under the risk conditions. In case of the negative
         result of such Great Risk  Operations,  the  expenses  for  performance
         thereof shall not be accounted of when determining the Actual Shares of
         the  Partners.  In  case  of  the  positive  result  the  expenses  for
         performance  of  the  above  operations  shall  be  accounted  of  when
         determining the Actual Shares of the Partners with factor 2.0.
9.4      In case the Partners  disagree as to  assessment  of the results of the
         Great Risk  Operations  mentioned in Section 9.3, the dispute  shall be
         presented for  consideration  of a special  expert  group.  The special
         expert  group shall be formed of three (3)  persons.  The expert  group
         shall have to be composed of:

         - one specialist of a Ukrainian research institute or VNZu;

         - one specialist of ANI or other internationally recognized scientific
         institution of oil type of one of European countries;

         - one specialist of a leading Russian oil research institute or VNZu.

         Two first  experts shall be appointed by  respective  parties,  and the
         third expert shall be appointed by the two first ones.

         The award of the expert group shall be final.

                                    ARTICLE X
                        Basic and Additional Hydrocarbons

10.1     Gas and gas  condensate  produced on the deposit  shall be divided into
         Basic and Additional Hydrocarbons.

10.2     Basic  Hydrocarbons  shall  be the  volumes  of gas and gas  condensate
         produced from the wells (Chervonozavodsk ones Nos. 2, 3, 4, 5, 6, 7, 8,
         9 and  Rudivsk  ones Nos. 2, 4, 10,  101,  105,  371) that are put into
         operation by the Enterprise  independently  prior to the Effective Date
         and/or are not  transferred  onto the Individual  Balance Sheet.  Basic
         Hydrocrbons  shall be the property of the  Enterprise  and shall not be
         the product of the Joint Activity under this Agreement.

10.3     Additional Hydrocarbons shall  be the volumes of gas and gas condensate
         produced with  application of  the  production  capacities of the Joint

                                       13

<PAGE>



         Venture.  Additional  Hydrocarbons shall  be the difference between the
         total  volumes of  produced  gas  and gas  condensate  and the  volumes
         referred to Basic Hydrocarbons.

         The Balance Profit from realization of Additional  Hydrocarbons or they
         themselves,  in  case an  additional  agreement  is  signed,  shall  be
         distributed between the Partners to this Agreement.

                                   ARTICLE XI
       Accounting of the Property, of Operations under the Joint Activity,
          of Expenses for Performance Thereof and of Production Results

11.1     The accounting of the pecuniary  assets and the property  integrated by
         the Partners for performance of the Joint Activity, and of the property
         created   in  the   process  of  such   activity,   shall  be  kept  by
         "Poltavanaftogas" enterprise on the Individual Balance Sheet.

11.2     The expenses for  performance of prospecting  operations,  for drilling
         the production wells, for capital construction  including the acquiring
         of equipment in Ukraine,  for  performance  of research works and other
         expenses that are not referred to self-cost of the produce of the Joint
         Activity,  shall be paid from the Individual  Settlement  Account to be
         opened by "Poltavanaftogas" enterprise to ensure the Joint Activity and
         to be reflected in the Individual Balance Sheet.

         In addition to the above,  when  necessary and under the Joint Activity
         Programs,   the   Partners   shall,   at  the   expense  of  their  own
         (unintegrated)   assets,  incur  expenses  of  capital  character  with
         subsequently  referring  them to the value of the  capital  funds to be
         transferred onto the Individual Balance Sheet of the Joint Activity.

11.3     Under the terms  and  conditions  of a  separate  Operating  Agreement,
         "Poltavanaftogas" enterprise shall develop  Rudivsk-Chervonozavodsk gas
         condensate  deposit  and shall  bear  current  expenses  for  rendering
         services to the Joint  Venture  related to extraction of the produce of
         the Joint  Activity.  The services on  extraction of the produce of the
         Joint Activity shall be paid from the Individual  Settlement Account to
         the settlement account of "Poltavanaftogas" enterprise.

11.4     As  stipulated  by  the  Working  Program  the  Company  shall  perform
         individual  operations related to exploitation of the deposit under the
         terms and conditions similar to those listed in Section 11.3.

11.5     Self-cost of the produce of the Joint Activity shall be formed from the
         current  expenses  for  payment for the  services of  "Poltavanaftogas"
         enterprise and the Company  mentioned in Sections 11.3 and 11.4, and of
         other enterprises, from depreciation (amortization) of the fixed assets
         on the  records  of  the  Individual  Balance  Sheet,  from  compulsory


                                       14

<PAGE>


         deductions and  payments referred to the self-cost of the produce, from
         expenses  for  acquiring  materials  and  energy  resources,  and other
         expenses  referred to the self-cost of the  produce in compliance  with
         the legislation of Ukraine in force.

11.6     After the expenses for  extraction  of the produce are entered onto the
         Individual  Balance  Sheet  the  self-cost  thereof  and the  financial
         results of the Joint  Activity are formed.  The balance profit from the
         Joint Activity shall be divided between the Partners.

11.7     The Partners shall fix the settlement  prices on the services  rendered
         to the Joint  Venture  on the level of actual  expenses  for  rendering
         them. For the purpose of reliable  determining  of actual  expenses for
         rendering  services the Partners  shall  organize  the  accountancy  of
         expenses for  services to the Joint  Venture  with  application  of the
         system of sub-accounts.  General production  expenses of the Enterprise
         and the Company  shall be referred to services to the Joint  Venture at
         the  criterion  to  be  established  by a  separate  addendum  to  this
         Agreement.

11.8     The Partners of the Joint Activity shall have the right of control over
         and audit of all  accounting  documents  related to the Joint  Activity
         through  auditing by  independent  audit  entities.  The planned audits
         shall be carried out not less than once a year and shall be paid for by
         the Partners in  proportion to their  shares.  Special  audits shall be
         paid for by the initiators thereof.

11.9     The compulsory  audit stipulated by the legislation of Ukraine shall be
         carried out within the  prescribed  time  periods and shall be paid for
         from the Individual Settlement Account.

11.10    The accounting shall be kept in terms of the national monetary  unit of
         Ukraine.

                                   ARTICLE XII
                        Taxes and Payments to the Budget

12.1     Taxes and  compulsory  payments to the budget and  non-budgetary  funds
         referred to the self-cost of the produce,  and the  value-added tax and
         the rent shall be paid at the expense of the proceeds from  realization
         of the  joint  produce  and  shall be  accounted  of by the  Individual
         Balance  Sheet.  The tax on profit shall be paid by the Partners  after
         having earned a portion of the balance profit due thereto.

12.2     In case of  distribution of the produce between the Partners they shall
         pay  independently  the  value-added  tax,  the  rent,  deductions  for
         exploration  operations  and payment for use of the  subsoil,  taxes on
         property and land, and the tax on profit.

                                       15

<PAGE>


                                  ARTICLE XIII
                       Property Relations of the Partners

13.1     The property and the pecuniary assets  transferred by the Partners onto
         the Individual Balance Sheet and those created, obtained or acquired in
         the process of the Joint Activity  shall make up their joint  property.
         The Partners shall have no right to dispose of their share in the joint
         property without consent of the other Partners to this Agreement.

13.2     The Balance Profit from realization of Additional Hydrocarbons produced
         on Rudivsk-  Chervonozavodsk  deposit shall be distributed  between the
         Partners on the quarterly basis under the terms and conditions hereof.

13.3     The criterion of the profit distribution  between the Partners shall be
         their Actual Share in investing the Joint Activity. The Actual Share of
         any of the Partners  shall be determined by  calculation  as a ratio of
         the Accrued  Capital  Expenses of such  Partner for the whole period of
         the Joint Activity hereunder to the total amount of the Accrued Capital
         Expenses for the time period of the Joint Activity.

13.4     The Accrued Capital  Expenses of the Enterprise  shall be calculated at
         the end of each quarter and shall include:

         - the expenses for  construction of the wells and  improvement  objects
         (except the wells producing basic  Hydrocarbons)  incurred prior to the
         Effective Date and not related to production of the Basic Hydrocarbons;

         - pecuniary assets of the Enterprise  entered to the Individual Balance
         Sheet for  funding  the works  related  to  drilling  and repair of the
         wells,  to industrial  construction  which works are  stipulated by the
         Joint Activity Programs;

         - the value of the material resources acquired for the assets of the
         Enterprise that are transferred to the Individual Balance Sheet;

         - the  expenses of the  Enterprise  incurred for its own account on its
         own or by involving  contractors for performance in compliance with the
         Joint Activity  Program of the works related to  contractual  drilling,
         industrial  construction and overhaul at the actual  contractual prices
         with   accounting  of  the  value  of  material   resources   given  to
         contractors.

13.5     The accrued Capital  Expenses of the Company shall be calculated on the
         quarterly basis and shall include:

         - pecuniary  assets of the Company  entered to the  Individual  Balance
         Sheet for  funding  the works  related  to  drilling  and repair of the
         wells,  to industrial  construction  which works are  stipulated by the
         Joint Activity Programs;


                                       16

<PAGE>



         - the value of the material resources given directly to contractors or
         the Enterprise for ensuring performance of the Joint Activity Programs;

         - the value of the  services  related  to  drilling,  construction  and
         overhaul  rendered  by the  Company  to  the  Joint  Venture  by way of
         production cooperation,  and to other enterprises at the expense of the
         Company in compliance with the approved Joint Activity Programs.

13.6     The Actual Share of either  Partner shall be determined on the basis of
         the data on the Accrued Capital Expenses every quarter.

13.7     The Accrued  Capital  Expenses  and the Actual  Shares of the  Partners
         shall be subject to approval by the Managing Committee.

13.8     The  Partners   hereto  have  agreed  that  the  Balance   Profit  from
         realization of Additional  Hydrocarbons  shall be  distributed  between
         them  depending on the Actual Shares of  Participation  on the basis of
         the base ratio of profit  division  to be agreed  upon by the  parties.
         When the Parties comply with the Shares of Participation  stipulated by
         Section 2.1 hereof and making up 50:50,  the Share of the Enterprise in
         the Profit shall be 60% and respectively the Share of the Company shall
         be 40%.

         In case of  deviation  from the  above  correlation  of the  Shares  of
         Participation,  the actual Share in the Profit shall be determined  for
         the Company as the product of the Actual  participation  of the Company
         by factor 0.8 (the ration of the agreed upon  proportion of division of
         the  profit in case of equal  participation  in  investing,  that is 40
         divided by 50). The Actual Share of the Profit for the Enterprise shall
         be determined as 100% minus the Actual Share of the Company Profit.

13.9     In case of  division of the produce  between  the  Partners  applicable
         shall be the above proportions and the mechanism of division.

                                   ARTICLE XIV
                    Realization of the Joint Activity Produce

14.1     The Joint Activity  produce shall be realized by the  Enterprise  under
         the popwers of attorney of other  Partners to the Agreement , providing
         that in case of  division  of the  produce it can be realized by either
         Partner on its own.

                                   ARTICLE XV
                   Procedure for Conducting the Joint Activity

15.1     Management  of  the  joint  business  related  to  performance  of  the
         Agreement terms and conditions,  to organization  and management of the
         works,  representation  to  third  persons  shall  be  assigned  to the

                                       17

<PAGE>



         Enterprise which is vested  with the respective  authority on behalf of
         the  Partners.  The  operative  management  of  the  activity  shall be
         exercised by the charter managing bodies of the Enterprise.

15.2     The rights and  obligations  of the  Enterprise  assigned to manage the
         joint  business  shall  be  determined  in the  power of  attorney  for
         managing  joint  business to be filed in compliance  with Article 66 of
         the Civil Code of Ukraine and signed by the other partners hereto.

15.3     The  Enterprise  assigned to manage the joint business shall enter into
         agreements  related  to  ensuring  the  joint  activity,  shall  obtain
         civilian  rights on its own  behalf and shall  bear  liabilities  under
         agreements.  The  agreements  entered  into  by  the  Enterprise  shall
         formulate the rights and  obligations  for other Partners in compliance
         with the powers of attorney available.

15.4     The procedure for realization of the produce and for settlements  shall
         be determined by this Agreement and specific  agreements with buyers of
         the produce.

15.5     The control over the  financial  and business  activity of the Partners
         shall be exercised by the auditing bodies of the Partners determined by
         their  Charters.  In so doing  the  Partners  shall  have the  right to
         familiarize  themselves  with any  documentation  within  the sphere of
         their Joint  Activity.  When  necessary as the Partners may agree upon,
         independent audits shall be carried out.

15.6     The issues  related to  exercising  the Joint  Activity  and  requiring
         mutually  agreed upon  decisions  shall be  resolved,  when  necessary,
         through convening  sittings of the Managing Committee under the plan of
         operation of the Committee, upon the initiave of the Chairman or upon a
         request of any Partner.  Decisions can also be made through exchange of
         letters, cables, fax messages and so called written notices.

         In case the made decisions of the Managing  Committee  require to amend
         the provisions  hereof,  such  amendments  shall be filed by additional
         agreements.



                                   ARTICLE XVI
     Coordination of the Joint Activity and Management of the Joint Venture

16.1     Co-ordination of the Joint Activity and management of the Joint Venture
         shall be exercised on the basis of decisions of the Managing Committee.
         Initially the Managing  Committee  shall  consist of 3  representatives
         from either  Partner.  The Chairman of the Managing  Committee shall be
         the Director General of "Poltavanaftogas"  enterprise.  Upon expiration
         of the year of the Joint  Activity  hereunder  the  composition  of the


                                       18

<PAGE>



         Managing  Committee shall  be revised in such a way in order to account
         of the Actual Share  of the Partners in the Joint Activity.  Further on
         the  composition  of  the  Managing  Committee  shall be  revised  with
         accounting  of  the Actual  Shares every two years.  Upon a decision of
         the  Board of  "Ukrnafta"  JSC the Managing  Committee  may include its
         (Board) representatives.

16.2     Decisions of the Managing Committee shall be made by individual vote.

         In case the Partners fail to make a decision on operating issues of the
         Joint  Activity,  such as  selection of a  contractor,  approval of the
         contract for  performance of works or purchase of equipment,  the issue
         shall be submitted  for  consideration  by an expert group to be formed
         and to operate under the procedure set forth in Section 9.4.

16.3     The operative management of the Joint Venture shall be exercised by the
         personnel of the Enterprise.

16.4     The  Enterprise  shall prepare the documents  required for the Managing
         Committee for making decisions on coordination of the Joint Activity.

                                  ARTICLE XVII
                    Concession of Rights and Legal Succession

17.1 The Partners cannot concede their rights and obligations hereunder.

17.2     Joining the  Agreement  by new Partners  irrespective  of the terms and
         conditions  of such  joining  shall not  constitute  concession  of the
         rights.

17.3     In case of termination of any Partner's  activity due to liquidation or
         re-formation,  the rights and  obligation  thereof under this Agreement
         shall  pass to the  official  successor  under the  condition  of legal
         confirmation of the rights of the latter.

                                  ARTICLE XVIII
                              Joining the Agreement

18.1     This  Agreement  can be joined by any legal entity or a natural  person
         under the condition of consent of all Partners.

18.2     Joining the  Agreement  by new  Partners  shall  involve an  additional
         agreement to be signed by all Partners.



                                       19

<PAGE>


                                   ARTICLE XIX
                         Confidentiality of Information

19.1     Any information  transferred by one Partner to the other Partner within
         the effective time period hereof and containing the  information on the
         works performed,  produce, prices, negotiations and proposals including
         the terms and conditions  hereof disclosure of which may inflict losses
         to any of the Partners,  shall be confidential and shall not be subject
         to  disclosure  to third  persons  except the cases  stipulated  by the
         legislation in force.

19.2     Any other  information  proposed by any of the Partners or proposals or
         ideas,  shall  not have to be  considered  as  secret  or  confidential
         information  except the cases  when it is  specially  stipulated  in an
         additional agreement signed by representatives of the Partners.

                                   ARTICLE XX
           Mutual Liability of the Partners and Settlement of Disputes

20.1     Either  Partner  shall  be  materially  liable  for  default  or  undue
         performance of the terms and conditions  hereof and appendices  hereto,
         and in case of  violation  thereof  shall  have to  indemnify  to other
         Partners direct losses occurred due to its fault.

20.2     The Partners to the Agreement  shall be exempted from  liability if the
         due performance  thereby of their obligations have been interfered with
         circumstances of insuperable force (Force Majeure). Force Majeure shall
         mean any action or circumstance that does not depend on the Partner and
         is beyond the  reasonable  control of the  Partner  which has  declared
         Force  Majeure that  restricts or  interferes  with  activities  of the
         Partner hereunder or ability to bear liability hereunder. Force Majeure
         shall include fires, explosions,  epidemics,  inevitable circumstances,
         military operations  (declared and undeclared) or conditions  occurring
         in connection therewith,  strikes or other workers  disturbances,  land
         disputes  and  disputes  related  to  use of the  subsoil,  absence  or
         impossibility to obtain, or restrictions in use of required technology,
         information, equipment, personnel, and also floods, storms, earthquakes
         and other natural disasters; blockades, embargoes, riots, insurrections
         and other civil  disturbances  as well as changes in the legislation in
         force,  substantial  reduction of the state prices on gas. The affected
         Partner  shall  have to  notify  immediately  the other  Partner  as to
         commencement of such  circumstances,  expected duration and termination
         thereof.

20.3     The  Partners  have  agreed to apply all  efforts to  resolve  disputes
         between them through negotiations.

20.4     In case the Partners fail to resolve the disputes through  negotiations
         within  sixty  (60) days as from the moment of the notice of one of the
         Partners  to the other  partner  as to the  disputes  available,  their
         consideration  shall  be  submitted  to  the  International  Commercial
         Arbitration  Court with the Chamber of Commerce and Industry of Ukraine
         that will make the final award.


                                       20

<PAGE>



20.5     The  Arbitrage  shall  consist of 3  arbiters  to be  appointed  in the
         following  way:  the  plaintiff  and the  defendant  shall  appoint one
         arbiter each which arbiters shall jointly appoint the third arbiter. In
         case the defendant  fails to appoint the arbiter within 30 days as from
         the date of the notice on commencement of the arbitration  proceedings,
         such arbiter  upon the  defendant's  request  shall be appointed by the
         Chairman of the International Commercial Arbitration Court. In case two
         arbiters  fail to  appoint  the  third  arbiter  within  60 days  after
         appointment of the second arbiter, the third arbiter shall be appointed
         by the Chairman of the International  Commercial Arbitration Court from
         among three arbiters proposed by the plaintiff.

                                   ARTICLE XXI
          Termination of Activity under the Agreement or its Severance

21.1     This Agreement  shall become nill and void in case of expiration of the
         time period of its validity and in case of its premature severance.

21.2     The Partners can severe this  Agreement on the basis of the mutual
         consent or unilaterally.

21.3     In case one of the Partners intends to severe this Agreement,  it shall
         have to notify  thereabout  the other  Partner not later than three (3)
         months.

         Upon  expiration  of the  above  time  period  the  Agreement  shall be
         considered  as  terminated  and within  the next 3 months the  Partners
         shall perform mutual settlements  related to distribution of the profit
         and division of the joint property.

21.4     Under the  unanimous  consent  of the  Partners  the  Agreement  can be
         terminated  in  advance  before  expiration  of the  fixed 20 year time
         period if the Partners  arrive to the conclusion  that the goals of the
         Agreement cannot be achieved or that it is not advisable to continue it
         in connection with unprofitability of the Joint Activity.

21.5     In case of  severance  of the  Agreement  upon  the  initiative  of the
         Enterprise,  it (the Enterprise) shall, within six (6) months and under
         the procedure  stipulated by the  legislation  in force,  return to the
         foreign  Partner its  investments in pecuniary form with  accounting of
         the actual wear and tear (amortization) of the joint property as on the
         moment of severance of the Agreement.

21.6     Upon  expiration  of the time period of the  Agreement  validity and in
         case  of  severance  hereof  under  the  mutual  consent  or  upon  the
         initiative of the Company, and when it is necessary, one shall consider
         the issue of liquidation of the wells,  pipelines and processing plants
         under the  established  procedure.  Liquidation  shall be funded at the
         expense of the balance of assets on the Individual  Settlement  Account
         and the assets of the Partners that will fund the liquidation  works at
         the ratio  formed  during  the last actual  distribution  of the profit

                                       21

<PAGE>



         from  the Joint  Activity.  If liquidation of the above property is not
         advisable  or impossible due to technical, geological or other reasons,
         it shall pass  into disposal of the  Liquidation  Commission  formed by
         the Partners which  is fully authorized to terminate the Joint Activity
         including   realization   of   the   property,   redemption  of  debts,
         settlements with the Partners.  If the Liquidation  Commission fails to
         realize such property as  the wells,  pipelines and  processing  plants
         within six  months,  they shall  be  transferred  free of charge to the
         balance   sheet  of   the  principal   activity  of   "Poltavanaftogas"
         enterprise.

21.7     Upon  expiration  of the time period of validity or after  severance of
         this  Agreement,  the  property  given by the  Partners  for use to one
         another shall be returned to the owners.

                                  ARTICLE XXII
                                  Miscellaneous

22.1     As mutually  agreed upon by the Partners this  Agreement can be amended
         and supplemented including involvement of other Partners into the Joint
         Activity.

22.2     The Partners represent:

         - that they have all powers required to sign this Agreement;

         - that they will not take actions that can be  detrimental to goals and
         tasks hereof.

         This  Agreement  has been signed in 6  duplicates  in  Ukrainian  and 2
         duplicates in Russian four  duplicates  for each of the  Partners.  All
         duplicates are of equal legal force.

THE AGREEMENT HAS BEEN SIGNED

For "Poltavanaftogas" Enterprise


            V.P. Kozak
         (Director General)
For "Carpatsky Petroleum Corporation"
Company

              L. Texas
         (Company President)
         AGREED

Chairman of the Board
"Ukrnafta" JSC

           P.M. Demchenko



                                       22

<PAGE>


                                  Appendix No.
                          to Agreement No. 410/95 as of
       September 14, 1995, on the joint production and investment activity
                   related to development and exploitation of
        Rudivsk-Chervonozavodsk deposit with amendments and addenda dated
                              October 15, 1996LIST
             of equipment, tools, appliances, materials and chemical
          reagents supplied by "Carpatsky Petroleum Corp." company as a
                           foreign investment in 1996


       Description ............................   Unit of     Qty.    Amount in
                                                            measure   thous. USD
1. Gushing fittings
Py = 750 with the column head for pipes, total ...  set        5          554

Including:
12 3/4" x 9 5/8" x 5 3/4" ........................  set        3
12 3/4" x 9 5/8" x 6 5/8" ........................  set        2

2. Drill pipes, total ............................  m       6090          940
Including
2 7/8" G-105 .....................................  m       6000          400
127 x 9.19 G-105 .................................  m         60          450
Y[BE]T 178 spiral ................................  m         30           90

3. Casing pipes, total ...........................  m       5400          390
Including:
7" P-110 .........................................  m       2500          180
168 x 10.59 P-110 ................................  m       2900          210

3. Pump-compressor pipes
2 7/8" P-110 VAM R-2 .............................  m      15200          192

4. Drill bits, total .............................  piece     23          149
Including:
295 ATX-G3 .......................................  piece      3           20
215.9 ATJ ........................................  piece     10           65
215.9 ATJ22 ......................................  piece      5           32
215.9 ATX-G3 .....................................  piece      5           32

5. Sealing grease for threads ....................  kg        60            3



                                       23

<PAGE>

 Director General
"Poltavanaftogas" enterprise
    V.P. Kozak

    President
"Carpatsky Petroleum Corp." company
    L. Texas


                                       24

<PAGE>



ADDITIONAL AGREEMENT No. 1

to Agreement No. 410/95 as of September 14, 1995,
 with the amendments and addenda dated October 15, 1996,
"On the joint investment and production activity related to development and
exploitation of Rudivsk-Chervonozavodsk deposit"

Poltava                                                     December 17, 1996

         In  compliance  with  Sections  2.2 and 2.3 the  partners  to the above
agreement  have  agreed that in  January-February,  1997,  "Carpatsky  Petroleum
Corporation"  company shall transfer to the balance of the joint activity as the
initial contribution the property investment: six drilling bits of the following
types


          Brand ..............           Qty.        Price     Amount
                                                      USD        USD
8 1/2" EHP53A ER3465 .........  EA        1         2715.00   2715.00
8 1/2" EHP61A MR1112 BA1061 ..  EA        2         2715.00   5430.00
8 1/2" EHP51H BA1459 .........  EA        1         2715.00   2715.00
8 1/2" EHP61   BA1191 BA1195    EA        2         2102.00   4204.00

         The total cost FOB.RID, Houston      - 15064 US dollars
         Transportation                       - 1441.78
         .......................
         .......................
         .......................
         Shipper - "Reed Tool Company" (USA, Houston) .........................

                  THE ADDITIONAL AGREEMENT HAS BEEN SIGNED BY:

For "Poltavanaftogas" Enterprise


                       V.P. Kozak
        Director General
For "Carpatsky Petroleum Corporation"
Company

                         L.C. Texas
          President
                            Addresses of the parties:

       12, Radyanska St.,
     Poltava, 314000, Ukraine

   17098, Richmond, Avenue, 3000
          room 100
 Houston, the State of Texas, USA

                                       25

<PAGE>


ADDITIONAL AGREEMENT No. 2

to Agreement No. 410/95 as of September 14, 1995,
 with the amendments and addenda dated October 15, 1996,
"On the joint investment and production activity related to development and
exploitation of Rudivsk-Chervonozavodsk deposit"

Poltava                                                  February 25, 1997

         In  compliance  with  Sections  2.2 and 2.3 the  partners  to the above
agreement  have  agreed  that  in  March-April,   1997,   "Carpatsky   Petroleum
Corporation"  company shall transfer to the balance of the joint activity as its
contribution to the joint activity the following investment property:

- 15387.38 metres of seamless  pump-compressor  pipes, external diameter 2 7/8",
steel quality P- 110, price $ 12.6 per 1 metre,  the total cost  CIP-Poltava one
hundred and ninety  three  thousand  eight  hundred and sixty six US dollars and
twenty four cents ($ 193866.24).

Shipper -    "Pipeco Services" (USA, Houston, 8223 Willow Place South, room 190)

                  THE ADDITIONAL AGREEMENT HAS BEEN SIGNED BY:

     For "Poltavanaftogas" Enterprise


                 V.P. Kozak
             Director General
   For "Carpatsky Petroleum Corporation"
                  Company

                 L.C. Texas
                 President
         Addresses of the parties:

            12, Radyanska St.,
         Poltava, 314000, Ukraine
       17098, Richmond, Avenue, 3000
                 room 100
     Houston, the State of Texas, USA


                                       26

<PAGE>



ADDITIONAL AGREEMENT No. 3

to Agreement No. 410/95 as of September 14, 1995,
 with the amendments and addenda dated October 15, 1996,
"On the joint investment and production activity related to development and
exploitation of Rudivsk-Chervonozavodsk deposit"

Poltava                                                      February 25, 1997

         In  compliance  with  Sections  2.2 and 2.3 the  partners  to the above
agreement have agreed that in April-May, 1997, "Carpatsky Petroleum Corporation"
company shall transfer to the balance of the joint activity as its  contribution
to the joint  activity  the  property  investment  in the form of the  following
drilling bits:


Nos.Size ...............   Type                Qty.        Price      Amount
                                                            USD        USD
                                                          SIF Kiev   SIF Kiev
1   6-1/2" .............   ATJ-S33              2          4725.00    9450.00
2   6-1/2" .............   ATJ-33C              2          4725.00    9450.00
3   6-1/2" .............   ATJ-55R              2          4725.00    9450.00
4                          Tools for extensions 1 set       105.00     105.00
5   Extensions .........   "FF" (20/32)         6 sets      Free of    Free of
                                                            charge     charge

         Total cost SIF Kiev                - 28455.00 US dollars

Shipper                          - "Hughes Christensen Company", Houston, USA

                  THE ADDITIONAL AGREEMENT HAS BEEN SIGNED BY:

          For "Poltavanaftogas" Enterprise


                      V.P. Kozak
                  Director General
        For "Carpatsky Petroleum Corporation"
                       Company

                      L.C. Texas
                      President
              Addresses of the parties:

                 12, Radyanska St.,
              Poltava, 314000, Ukraine
            17098, Richmond, Avenue, 3000
                      room 100
          Houston, the State of Texas, USA

                                       27

<PAGE>



of  "Ukrnafta"  OJSC" made by  ""Dokhod"  Production  Scientific  Implementation
Company" having a general agreement with the State Property Fund of Ukraine, and
governed by Order of the Ministry of finance of Ukraine  "Amendments and addenda
to the  instruction  on the  procedure  for  filling  out the forms of an annual
accounting  report of an enterprise"  No. 30 dated February 10, 1997,  have made
this report that the investment cost of the objects of uncompleted  construction
transferred by  "Poltavanaftogas"  enterprise to the individual balance sheet of
the joint  activity  is  estimated  in the  amount of nine  million  thirty  two
thousand  six hundred and ninety nine (9 032 699)  hryvnyas  that at the rate of
NBU as on  February  1,  1997,  (1 US dollar = 1.8755  hryvnyas)  equals to four
million  eight  hundred and sixteen  thousand  one hundred and fifty five (4 816
155) US dollars.  In addition to that, during distribution of the results of the
joint  activity one accounts of the  value-added  tax in the amount of 1 289 069
hryvnyas or 686 004 US dollars actually paid by "Poltavanaftogas"  enterprise to
the contractors. The investment cost of separate objects amounts to:




                                       28

<PAGE>





<TABLE>
<CAPTION>
     Description of the object              Hole Bottom,             Cost of paid        VAT paid          Cost of the
                                                  m                  expenses for         to the           objects of
                                                                     uncompleted        contractors        uncompleted
                                                                     construction          as on          construction
                                                                      under the         1.02.1997,        according to
                                                                      balance of         hryvnyas        the results of
                                                                   Poltavanaftogas                         the expert
                                                                       hryvnyas                          appraisal as on
                                                                                                           1.02.1997,
                                                                                                            hryvnyas
                                       Project       Actually
                                                      as on
                                                    1.02.1997
<S>                                      <C>           <C>             <C>                <C>                <C>
Rudovsk well No. 102                     5920          5101            3136585            612918             4264542
Rudovsk well No. 104                     5920          3687            1591783            302741             1829032
Rudovsk well No. 106                     5200          2629            1145421            221319             1372406
Rudovsk well No. 111                     5200          2496             728346            134042             977610
Chervonozavodsk well No.100              5500                           237785             1683              237785
Rudovsk well No. 109                     5200                           124339             16366             351324

Total                                                                  6964259        ................       9032699
</TABLE>

                       Director General
                of "Poltavanaftogas" Enterprise


                           V.P. Kozak

                           President
             of "Carpatsky Petroleum Corporation"
                            Company

                           L.C. Texas


                                       29

<PAGE>



ADDITIONAL AGREEMENT No. 5

to Agreement No. 410/95 as of September 14, 1995,
with the amendments and addenda dated October 15, 1996,
on the joint investment and production activity related to development and
exploitation of Rudovsk-Chervonozavodsk deposit

Poltava                                                         March 31, 1997

                                    STATEMENT
           of transfer of the objects of uncompleted construction onto
               the individual balance sheet of the joint activity

         The Partners to Agreement No. 410/95 as of September 14, 1995, with the
amendments  and addenda  dated  October 15, 1996,  on the joint  investment  and
production    activity    related   to   development    and    exploitation   of
Rudovsk-Chervonozavodsk   deposit,   have   familiarized   themselves  with  the
documentation   for   construction   of  the   production   wells  of   Rudovsk-
Chervonozavodsk  deposit,  with the certificates for allocation of lands and the
permits for use thereof,  with the progress of works related to  construction of
the wells on the objects,  and being  governed by  understandings  of additional
agreement  No. 4 as of February 28, 1997, by the decision of "Ukrneft" JSC as of
February 27, 1997,  have drawn up this  statement  that in  compliance  with the
terms and  conditions of agreement  No. 410/95 dated  September 14, 1995, on the
joint  investment and production  activity the following  objects of uncompleted
construction  have been  transferred  from the  balance  sheet of the  principal
activity of "Poltavanaftogas" enterprise and entered to the balance sheet of the
joint activity:












                                       30

<PAGE>





<TABLE>
<CAPTION>
         Description of the object                    Hole Bottom,              Cost of objects of       VAT paid to
                                                            m                       uncompleted        the contractors
                                                                                   construction            hryvnyas
                                                                                     hryvnyas
                                                Project       Actually as
                                                              on 1.02.1997
<S>                                             <C>             <C>                 <C>                   <C>
Rudovsk well No. 102                             5920             5101                4264542               612918
Rudovsk well No. 104                             5920             3687                1829032               302741
Rudovsk well No. 106                             5200             2629                1372406               221319
Rudovsk well No. 111                             5200             2496                977610                134042
Chervonozavodsk well No.100                      5500                                 237785                 1683
Rudovsk well No. 109                             5200                                 351324                16366

Total                                                                                 9032699              1289069
</TABLE>

         Volumes of the works performed by Borislav department of drilling works
for wells Nos. 102-P,  104-P, 109-P and by Pyryatin deep drilling  expedition of
"Chernigovneftegasgeologiya"  SGE  for  wells  Nos.  111-P  and  100-Ch  as from
February  1, 1997,  are subject to payment  from the balance  sheet of the joint
activity.

                Director General
         of "Poltavanaftogas" Enterprise


                    V.P. Kozak

                    President
      of "Carpatsky Petroleum Corporation"
                     Company

                    L.C. Texas


                                       31

<PAGE>


ADDITIONAL AGREEMENT No. 6

to Agreement No. 410/95 as of September 14, 1995,
 with the amendments and addenda dated October 15, 1996,
"On the joint investment and production activity related to development and
exploitation of Rudivsk-Chervonozavodsk deposit"

Poltava                                                          March 31, 1997

         In  compliance  with  Sections  2.2 and 2.3 the  partners  to the above
agreement have agreed that in April-May, 1997, "Carpatsky Petroleum Corporation"
company shall transfer to the balance of the joint activity as its  contribution
to the joint  activity  the  property  investment  in the form of the  following
drilling bits:


   Nos.         Size           Type       Qty.      Price          Amount
                                                     USD             USD
                                                   SIF Kiev       SIF Kiev
    1          8-1/2"         GT-20        4       6563.00        26252.00


         Total cost SIF Kiev                - 26262.00 US dollars

 Shipper                         - "Hughes Christensen Company", Houston, USA

                  THE ADDITIONAL AGREEMENT HAS BEEN SIGNED BY:

          For "Poltavanaftogas" Enterprise


                      V.P. Kozak
                  Director General
        For "Carpatsky Petroleum Corporation"
                       Company

                      L.C. Texas
                      President
              Addresses of the parties:

                 12, Radyanska St.,
              Poltava, 314000, Ukraine
            17098, Richmond, Avenue, 3000
                      room 100
          Houston, the State of Texas, USA


                                       32

<PAGE>

                                  ATTACHMENT 3
                               TO OPINION LETTER


                                 Addendum No. 5
                to Agreement No. 410/95 dated September 14, 1995,
          (State registration as of April 4, 1997, under No. 1353-001K)

Poltava                                                  December 25, 1997

         The Partners to Agreement  No. 410/95 dated  September  14, 1995,  with
amendments  and  addenda  as of  October  15,  1996,  "On Joint  Investment  and
Production  Activity on Development and Exploitation of  Rudivsk-Chervonozavodsk
Deposit" have agreed as follows:

         The following  amendments  shall have to be introduced into the text of
Agreement No. 410/95 dated September 14, 1995, with amendments and addenda as of
October 15, 1996, "On Joint  Investment  and Production  Activity on Development
and Exploitation of Rudivsk- Chervonozavodsk Deposit":

1        Section 2.2 of the Agreement shall have to be set forth in the
         following wording:

2.2      "Carpatsky  Petroleum  Corporation"  company shall transfer in 1997 and
         the first half of 1998  Investments in the form of pecuniary assets and
         property onto the  Individual  Balance Sheet that will  constitute  the
         initial  contribution  into the Joint  Activity to the total  amount of
         5000 thousand US dollars.  The lists of the property to be  transferred
         by  "Carpatsky  Petroleum  Corporation"  company shall be determined by
         separate  addenda  hereto.  The  Investments  in the  form  of  foreign
         currency  shall be  introduced  by  "Carpatsky  Petroleum  Corporation"
         company  within the time period agreed upon by the Partners  within the
         limits of the total  amount of the  investments  fixed by this  Section
         less investments in terms of property.

2        Section  2.2 of the  Agreement  shall have to be included as such which
         became nill and void under  Addendum  No. 3 as of August 12,  1997,  to
         Agreement No. 410/95 dated September 14, 1995.

Addresses of the Parties:

"Poltavanaftogas" enterprise: 12, Radyanska St., Poltava, 814000, Ukraine

"CARPATSKY PETROLEUM Corp." Company: 17098, Richmond Avenue, 3000, room 100,
Houston,  Texas, USA

                                                    SIGNED BY:

For "Poltavanaftogas" OGPD


              V.P. Kozak
           (Director General)

<PAGE>





            S.V. Manyuk
           (Chief Engineer)

For Carpatsky Petroleum Corporation"
              company
            L.K. Texas
            (President)

                        REGISTERED

Under No. 1353-013K as of February 3, 1998

Chief of Department



<PAGE>

                                  ATTACHMENT 4
                               TO OPINION LETTER


                             Amendments and Addenda
 to Agreement No. 410/95 as of September 14, 1995, on the joint investment and
production activity related to development and exploitation of Rudivsk-
Chervonozavodsk deposit in the wording as of October 15, 1996, with amendments
                        and addenda dated December 25, 1997
(State registration as of April 4, 1997, under No. 1353-001K with the Department
                for foreign economic relations of Poltava oblast)

Poltava                                                        August 26, 1998

         "Ukrnafta" OJSC represented by the chairman of the board Kozak Yaroslav
Ivanovych  and the  acting  head  of  "Poltavanaftogas"  oil and gas  production
department  (OGPD) Kolisnyk  Volodymyr  Feodosiyovych  acting under the power of
attorney  of  "Ukrnafta"  OJSC,  on  the  one  hand,  and  "Carpatsky  Petroleum
Corporation" company, USA, represented by the president Lesly K. Texas acting in
compliance  with the  Charter,  on the other hand,  accounting  of the fact that
"Ukrnafta" OJSC is the successor of "Poltavanaftogas" enterprise under Agreement
No.  410/95 and basing  themselves  on the  provisions of the Law of Ukraine "On
Introducing  Amendments  and  Addenda  to the Law of  Ukraine  "On  Taxation  of
Enterprise  Income"  passed by the Verkhovna Rada of Ukraine and put into effect
as from July 1, 1997,  and  accounting  of the initial  experience  of the joint
operations  under the above  agreement,  have agreed to introduce  the following
amendments and addenda into some articles of Agreement No. 410/95:

1. The  introductory  clause of the Agreement  shall have to be set forth in the
following wording:

"Ukrnafta" OJSC and "Carpatsky Petroleum  Corporation" company, USA, hereinafter
referred to as the  "Partners"  and  severally as the  "Partner"  have made this
Agreement as follows:

2. In the  text of the  Agreement  "Poltavanaftogas"  Enterprise",  "Enterprise"
shall have to be read and  understood  as "Ukrnafta"  Open Joint Stock  Company,
"Ukrnafta" OJSC in Sections 2.1 and 10.2, and in Sections 2.4, 6.2.4,  7.1, 7.2,
7.8,  7.13,  11.3,  15.1,  15.2,  15.3 the above terms shall have to be read and
understood as "Poltavanaftogas" oil and gas production department, OGPD.

3. In the chapter  "DEFINITIONS OF PRINCIPAL TERMS" the definitions of the below
given terms shall have to be set forth in the following new wording:

Partners  shall be understood as legal  entities  that have  initially  made and
entered into this  Agreement or successors  thereof,  and any legal entities and
individuals that join the Agreement in the future.

Joint Activity  shall be understood as the  investment  and ptoduction  activity
based on the  cooperation  between the Partners to this Agreement on development
and exploitation of Rudivsk-Chervonozavodsk  deposit and stipulating division of
risks and results of such  operations  governed by the Agreement of legal force,

<PAGE>


by the norms of the Civil Code of Ukraine as to the joint  activity,  by the Law
of Ukraine "On  Investment  Activity",  by the Law of Ukraine "On  Treatment  of
Foreign Investment" and by other relevant normative legal acts of Ukraine.

Investments  shall be  understood as the pecuniary  assets,  property,  property
rights and intangible assets including intellectual valuables transferred by the
Partners  onto  the  Balance  Sheet  of the  Joint  Activity  and to be used for
construction or improvement of the Investment Activity Objects in the process of
development of Rudivsk-Chervonozavodsk oil, gas and gas condensate deposit.

Initial Contribution (Initial  Contributions) shall be understood as incompleted
wells Nos. 102- Rudivsk, 104-Rudivsk,  106-Rudivsk, 109-Rudivsk, 111-Rudivsk and
100-Chervonozavodsk  entered  by  "Ukrnafta"  OJSC into the  Individual  Balance
Sheet, and other tangible and intangible assets and money contributed within the
time period of 1997-1999  and which will be  contributed  by the Partners to the
Individual Balance Sheet till the date of full completion of construction of the
above  listed  wells.  The total  amount  of the  Initial  Contributions  of all
Partners  shall have to be equal to the full value of the wells  listed above in
this paragraph.

Managing  Committee shall be understood as the supreme  managerial body composed
of the authorized  representatives of the Partners,  which body has the right of
making  decisions on the principal issues of the Joint Activity as stipulated in
Article XVI hereof.

Individual Balance Sheet, Joint Activity Balance Sheet shall be understood as an
individual  balance  sheet that under the powers of attorney of the  Partners to
the Agreement has been kept by "Poltavanaftogas"  OGPD as from February 1, 1997,
and is designated  for the accounting of assets and  liabilities  related to the
Joint Activity including  pecuniary assets,  property,  etc., that are pooled by
the partners to this  Agreement for the purpose of exercising the Joint Activity
and that have been created in the process of the above  operations,  and for the
accounting  of the  business  operations  under  the Joint  Activity  and of the
financial results.

Agreed  Budget of Joint  Activity  shall be  understood  as a financial  plan of
activity under the Agreement for any fiscal year or other time period  depending
on the context. The Agreed Budget of Joint Activity shall account of all funding
sources including the own money of the Partners allocated for acquiring material
resources to be  transferred by the partners onto the Balance Sheet of the Joint
Activity.

Licensee  shall  be  understood  as  "Ukrnafta"  OJSC  that  in  the  person  of
"Poltavanaftogas"  OGPD  owns the  license  for  geological  exploration  of the
subsoil of Rudivsk-Chervonozavodsk oil, gas and gas condensate deposit including
its  pilot  production  operation  and in the  name of which a  license  will be
obtained for its  (Rudivsk-Chervonozavodsk  oil, gas and gas condensate deposit)
production development for the joint interests of the Partners to the Agreement.


                                       2
<PAGE>


Fiscal Year shall be  understood  as the time  period as from  February 1, 1997,
through to December 31, 1997, and the next full calendar years.

Capital Costs shall be understood as one-time expenses for creation or acquiring
of the Capital Funds,  and the Costs for  Improvement of such Capital Funds that
are   created   in   connection   with    development   and    exploitation   of
Rudivsk-Chervonozavodsk  deposit under the terms and conditions  hereof and that
are subject to depreciation under the procedure stipulated by the legislation of
Ukraine.

Current  Costs  (Gross  Expenditures)  shall  be  understood  as the  costs  for
production of Hydrocarbons  that, in compliance with the legislation of Ukraine,
are excluded (deducted) from the gross income erned from the Joint Activity when
determining the taxable income.

4. The chapter  "DEFINITIONS  OF PRINCIPAL  TERMS" shall have to be supplemented
with definitions of the following terms:

 Manager shall be understood as "Poltavanaftogas" OGPD that in the person of the
head thereof and other  executives,  exercises  management of the Joint Activity
and organizes transaction of the affairs of the Partners.

Objects of Investment Activity  (Investment  Objects) shall be understood as the
wells and surface structures  existing in  Rudivsk-Chervonozavodsk  oil, gas and
gas  condensate  deposit that upon consent of the Partners are separated for the
Balance Sheet of the Joint Activity  including  those  construction of which has
not yet been  completed,  on which  hereunder  one  carries  out the  works  for
completing  construction,  for overhaul,  for intensifying inflow, etc., for the
purpose of ensuring production of the Additional Hydrocarbons,  and respectively
new objects to be built in the deposit in the process of the Joint Activity.

Contribution  (Contributions)  shall be  understood  as any money,  tangible and
intangible assets that are transferred onto the Individual  Balance Sheet of the
Joint Activity and under the terms and conditions  hereof and are the Objects of
Investment  Activity and  Investments,  and also the services in the form of the
Labour  Contribution  into the Joint  Activity.  Exception  shall be made of the
money designated for  indemnification of the Gross Expenditures in case when the
incomes  from sale of the produce  from the Joint  Activity  are not  sufficient
therefor, and the tangible assets that are transferred from the Balance Sheet of
the Joint Activity to third  entities for use which  entities  perform the works
(render services) for the joint production as co-performers  (subcontractors) of
the Partners of the Joint Activity.

Labour  Contribution  shall be  understood  as  services  and works  related  to
construction or improvement of the Objects of Investment  Activity  performed by
the Partners for their own money,  and to maintenance  thereof in the process of
the subsequent  operation and rendering  services  related to the Joint Activity
and performed under similar terms and conditions.




                                       3
<PAGE>



Joint Property shall be understood as pecuniary assets,  tangible and intangible
assets,  property and non-property  rights integrated by the Partners hereunder,
and other  pecuniary  assets,  tangible  and  intangible  assets,  property  and
non-property  rights  created or  acquired  as a result of the Joint  Investment
Ptoduction  activity  which are  reflected in the  Individual  Balance Sheet and
belong to the Partners hereto by the Joint Ownership Right.

Joint  Ownership  Right shall be  understood  as the right of joint  possession,
disposal of and use of the property, money, tangible and intangible assets which
are on the records of the Individual  Balance Sheet and are the Joint  Property.
The Joint  property shall be used and disposed of as agreed upon by the Partners
to the Agreement.

Initial  Period shall be understood  as a period  commencing as from the date of
registration  hereof and  ending as on the date of  putting  the last of the six
wells  contributed  by  "Ukrnafta"  OJSC into the Joint  Property as the Initial
Contribution  into  operation.  Exploration of  Rudivsk-Chervonozavodsk  Deposit
shall be  understood  as a  package  of works,  including  the  drilling  of the
individual   prospecting  holes,  performed  for  the  purpose  of  the  further
exploration  of the  geological  composition  and  reserves of  Hydrocarbons  of
Rudivsk-  Chervonozavodsk  oil, gas and gas condensate deposit, and organization
of  calculations  of the reserves and  submission of the relevant  materials for
consideration by the State Commission on Reserves.

 Individual  Account  in  Foreign  Currency  shall be  understood  as a separate
account in foreign  currency to be opened by any  non-Ukrainian  partner to this
Agreement with one of the banks of Ukraine to provide for the Joint Activity.

Great Risk Operations shall be understood as specific  operations of exploration
and development of Rudivsk-Chervonozavodsk deposit related to exercising capital
costs  necessity  to  include  which  into the  Joint  Activity  Program  is not
recognized  by the Managing  Committee  and which,  upon a decision of the above
Committee, are individually performed by one of the Partners under the procedure
stipulated by Article IX hereof.

Share in Investment of the Joint Activity  (Actual Share) shall be understood as
the ratio between the accumulated  amount of the actual  Contributions of any of
the Partners to the Agreement and the total amount of the  Contributions for the
time  period  as from  commencement  of the Joint  Activity  the  procedure  for
determining which ratio is established by Section 13.2 hereof.

Obligations  to Fund the Joint Activity  (Obligations)  shall be understood as a
Contribution  which under the Joint  Activity  program and the Agreed  Budget is
stipulated to be made by any partner within the current fiscal year.

Planned  Share in Funding the Joint  Activity  shall be  understood as the ratio
between the Accumulated Amount of the actual Contributions of any Partner to the



                                       4
<PAGE>


Agreement  for the  time  period  preceding  the  current  fiscal  year  and its
Obligations   for  the  current  fiscal  year,  and  the  total  amount  of  the
Contributions and the Obligations.

Hydrocarbons  shall be  understood  as the free and  dissolved  (oil)  gas,  gas
condensate and oil being produced or will be produced in Rudivsk-Chervonozavodsk
deposit.

Basic Hydrocarbons shall be understood as a volume of Hydrocarbons that has been
produced in  Rudivsk-Chervonozavodsk  deposit or can be produced  therein in the
future from the wells  built prior to signing  this  Agreement,  providing  that
there are no works  carried out therein at the expense of the Joint  Assests for
the purpose of  intensifying  the inflow of  Hydrocarbons.  The volumes of Basic
Hydrocarbons  shall be determined  through  instrumentation  measurements on the
wells.  In case when the  Objects  of  Investment  Activity  for the  purpose of
intensifying   the  inflow  of  Hydrocarbons   are  the  wells  built  prior  to
commencement of the Joint Activity, Basic Hydrocarbons shall be determined as on
the  date  of  commencement  of the  respective  works  through  instrumentation
measurements, and in the future through calculations.

Additional Hydrocarbons  (Hydrocarbons of Joint Activity) shall be understood as
a volume of Hydrocarbons to be produced in the future in Rudivsk-Chervonozavodsk
deposit  in excess of basic  Hydrocarbons  at the  expense  of  investments  and
application of up-to-date technologies therein.

Incomes from Joint Activity  (Incomes,  Income) shall be understood as pecuniary
receipts earned as a payment from sale of Hydrocarbons of Joint Activity.  Gross
Costs shall be reimbursed and depreciation  deductions and the Profit from Joint
Activity shall be formed at the expense of the Incomes Joint Activity. A portion
of the Incomes from Joint  Activity  shall be  distributed  between the Partners
under the procedure stipulated by the legislation of Ukraine.

Profit from Joint  Activity  shall be understood as a profit  determined for the
purpose of taxation under the requirements of the legislation of Ukraine.

Capital Funds shall be understood as material  valuables applied in the business
activity  through the time period exceeding 365 calendar days and depreciated at
the rates determined by the legislation of Ukraine.

Expenses for  Improvement  of Capital  Funds shall be understood as expenses for
peformance of all types of repairs, reconstruction, modification and other types
of improvement of the capital funds available on the Individual Balance Sheet of
Joint  Activity  which are  depreciated  under the  procedure  stipulated by the
legislation of Ukraine.

5. Sections 1.2 (the last paragraph),  1.5, 1.6, 1.7, 1.13 of Article I "GENERAL
PROVISIONS" shall have to be set forth in the following wording:



                                       5
<PAGE>



1.2      ... - distribution of the Incomes from Joint Activity or the produce in
         cases stipulated by the legislation of Ukraine, under additional
         agreements (addenda to this Agreement).

1.5      Obligations  arising  in the  process  of the Joint  Activity  to third
         persons under civil  agreements and recorded in the Individual  Balance
         Sheet,  shall  be the  subject-matter  of the  joint  liability  of the
         Partners.   Either  Partner  shall  bear  liability   under  the  above
         obligations in proportion to the Planned Shares.  In case of bankruptcy
         of any of the Partners,  the liability  under the  obligations  kept on
         records in the Individual Balance Sheet shall be redistributed  between
         other Partners in proportion to the Planned Shares.

         Obligations related to the Contributions to the Joint Activity shall be
         the subject-matter of the individual  (separate) liability of either of
         the Partners. In case failure to perform the Obligations related to the
         Contributions  results in failure to  perform  the  obligations  on the
         records in the Individual  Balance Sheet,  the claims  originating from
         such situation may be enforced by the motion of a creditor  against the
         Partner that has failed to perform the above Obligations.

         The Partners shall bear civil  responsibility  for the damage inflicted
         to the state or any legal entities or natural  persons in the course of
         use of the subsoil in proportion to the Shares in the Obligations. If a
         faulty  party  of the  inflicted  damage  is  any  of the  contractors,
         recourse shall be taken thereupon under the procedure stipulated by the
         legislation of Ukraine.

1.6      In case when  obligations  are not recorded on the  Individual  Balance
         Sheet or  assumed  by one of the  Partners  on the  basis of  powers of
         attorney of all other Partners, the liability for the above obligations
         shall be born by all Partners in the proportion and under the procedure
         set forth in Section 1.5. The  provisions  of this Section  shall in no
         way cover the obligations related to the acquiring by a Foreign Partner
         of the equipment or other property  subject to supplies to Ukraine as a
         foreign investment (Contribution into Joint Activity).

         Obligations arising from performance of the Great Risk Operations shall
         be the subject- matter of the individual  liability of the Partner that
         has initiated and is carying out such operations.

1.7      The  risk of  accidental  loss or  damage  of the  property  that is on
         records  of the  individual  Balance  Sheet  and is the  general  share
         ownership,  shall be borne by the Partners according to their Shares in
         the Investment.

1.13     This  Agreement with all amendments and addenda to be adopted by mutual
         consent of the Partners hereto,  shall be valid till March 3, 2023. The
         Agreement may be terminated  under the terms and conditions  stipulated
         by Article XXI.




                                       6
<PAGE>



6.  Article I "GENERAL  PROVISIONS"  shall have to be added with Section 1.14 as
follows:

1.14     For the  purpose of  determining  the ways for  achieving  the  highest
         economic  indices of the  investment  and other  business  activity the
         Partners to the Joint  Activity  shall  consider the issue of deepening
         the  cooperation  related  to  development  of  Rudivsk-Chervonozavodsk
         deposit through creation of a new business entity (a joint venture) and
         of  possible  expansion  of  cooperation  sphere onto other oil and gas
         deposits.  In such case the Partners shall be governed by the principal
         arrangements achieved herein.

7. Article III "LICENSES FOR EXPLORATION AND OPERATION OF HYDROCARBONS DEPOSITS"
shall be set forth in the following wording:

3.1      License No. 968 for exploration of Rudivsk-Chervonozavodsk  deposit for
         the time period of 5 years was obtained by "Ukrnafta" OJSC on March 30,
         1998.  The purpose of the license  (works) shall be  exploration of oil
         and gas pools in the low-coal deposits,  pilot production  operation of
         the wells,  approval of the deposit reserves by the State Commission on
         Reserves (SCR) of Ukraine with  subsequent  development of the deposit.
         The  copies  of the  above  License  and  appendices  thereto  shall be
         appendices hereto.

3.2      The license shall  stipulate  that the operations on exploration of the
         deposit  will be  carried  out under the  terms and  conditions  of the
         "Agreement on Joint  Activity on Geological  Exploration of the Subsoil
         and Preparation for production Developement of Rudivsk- Chervonozavodsk
         Oil, Gas and Gas Condensate  Deposit" No. 5/27 as of December 30, 1997,
         between "Ukrnafta" OJSC and "Chernihivnaftogasgeologiya" SGE. The above
         agreement does not contain specific commercial terms and conditions for
         co-operation but rather determines the procedure for subsequent conduct
         of the exploratory operations, providing that, when the license belongs
         to "Ukrnafta"  OJSC,  "Chernihivnaftogasgeologiya"  SGE participates in
         performance  of  exploratory   operations  on   Rudivsk-Chervonozavodsk
         deposit  on the  grounds  of  separate  contract  agreements  with  the
         Licensee.

         The Company shall assume the  obligation  to  facilitate  the available
         arrangements  between "Ukrnafta" OJSC and  "Chernihivnaftogasgeologiya"
         SGE.

3.3      For the purpose of formation of the  contractual  terms and  conditions
         for use of the subsoil of  Rudivsk-Chervonozavodsk  deposit  "Ukrnafta"
         OJSC with  participation  of the Company  experts shall prepare a draft
         License  Agreement to determine the procedure and terms and  conditions
         for use of the subsoil of  Rudivsk-Chervonozavodsk  deposit,  the role,
         rights and  obligations of "Ukrnafta" OJSC that will act as a Licensee,
         and the terms and  conditions for  participation  of the Company in the
         above operations as well as other potential partners to this Agreement.
         "Ukrnafta" OJSC shall organize  approval of the above License Agreement
         and the signing thereof by the relevant governmental authorities.


                                       7
<PAGE>


3.4      Upon  completion  of  exploration  of the deposit  and  approval of the
         reserves  "Ukrnafta"  OJSC  shall  apply for  obtaining  a License  for
         production operation of Rudivsk-  Chervonozavodsk  deposit for the time
         period of 20 years.  The  application  for the License  shall set forth
         that  "Ukrnafta"  OJSC  acts for the  best  interests  of the  Partners
         hereto. Other Partners hereto shall not compete with "Ukrnafta" OJSC in
         respect of obtaining the above License.

3.5      In case  the  Agreement  is  terminated  in  connection  with  making a
         decision    on    deepening     co-operation    in    development    of
         Rudivsk-Chervonozavodsk  deposit  through  formation  of a new business
         entity (a joint venture), "Ukrnafta" OJSC shall facilitate such venture
         in obtaining the License.

8.  Article  IV   "ORGANIZATION  OF  WORKS  FOR  DEVELOPMENT  AND  OPERATION  OF
RUDIVSK-CHERVONOZAVODSK DEPOSIT" shall be set forth in the following wording:

4.1      As the  Partners  hereto  agree  and under  the  power of  attorney  of
         "Ukrnafta" OJSC  "Poltavanaftogas"  OGPD shall act as an Operator as it
         is understood  traditionally in the  international  oil business and in
         compliance  with decisions of the Managing  Committee shall conduct all
         organizational  and practical  operations  related to  exploration  and
         operation of Rudivsk-Chervonozavodsk deposit.

4.2      Individual  operations related to development of the deposit,  drilling
         and  overhaul  of the  wells  can,  under  decisions  of  the  Managing
         Committee,   be  carried  out  by  the  Company  individually  or  with
         involvement of Ukrainian and foreign co-performers (subcontractors).

4.3      The Partners have agreed that drilling  entities of "Ukrnafta" OJSC and
         "Chernihivnaftogasgeologiya"  SGE shall act as  direct  performers  for
         drilling prospecting and production boreholes. The Company shall resort
         to  technical  re-equipment  of the  drilling  teams with the  advanced
         foreign engineering,  materials and technology,  geophysical support of
         the drilling that would provide for reduced time period of drilling the
         boreholes and would facilitate preservation of filtration properties of
         seams  to  be  opened.  The  specific  measures  related  to  technical
         re-equipment  of the  drilling  teams will be  stipulated  by the Joint
         Activity Programs. The value of the above measures will be accounted of
         as a Contribution into the Joint Activity.

         The Company is  intending  to  organize  that within the second half of
         1998 the  Ukrainian  specialists  would  study  the  expertise  of some
         drilling  companies  of   the  USA  and  Great  Britain.   The  Company
         specialists  and  the Ukrainian  specialists  shall  jointly  develop a




                                       8
<PAGE>


         program for  stage-by-stage  re-equipment  of  the  Ukrainian  drilling
         entities engaged in Rudivsk-Chervonozavodsk  deposit which program will
         stipulate  specific  volumes of works and  deliveries  of the equipment
         and tools,  sources for funding and  organizational and legal forms for
         implementation  of  such  measures.  In case of  implementation  of the
         above  intentions  the  organizational  expenses for performance of the
         relevant  measures  will be accounted of as the Labour  Contribution to
         the Joint Activity.

4.4      The Partners to the Agreement  shall resort to the measures  related to
         completion  of  the  prospecting  of  Rudivsk-Chervonozavodsk  deposit,
         qualitative  and complete  exploration  of the wells and seams,  timely
         transfer of the obtained data to "Chernihivnaftogasgeologiya" state-run
         geological  enterprise  (SGE),  and by participating in the summarizing
         assessment  of  geophysical,   geological  and  production  data  shall
         facilitate   the  services  of   "Chernihivnaftogasgeologiya"   SGE  in
         completing   calculations   of  the   reserves   of   hydrocarbons   in
         Rudivsk-Chervonozavodsk  deposit  and  approval  thereof  by the  State
         Commission  on Reserves by June,  2002,  that is earlier  than the date
         stipulated by the License.

4.5      The Company shall provide for supplies into Ukraine of the  progressive
         equipment  and tools for  operation  of the wells,  their  overhaul and
         exploration,   shall  organize   performance  of  highly  technological
         operations by foreign contractors in compliance with the subject-matter
         of the Agreement and the Joint Activity Program.

4.6      The  business  relations  as to  performance  by  the  Partners  of the
         operations (works, services) related to development and exploitation of
         Rudivsk-Chervonozavodsk deposit paid for from the joint accounts, shall
         be equalled to the relations  connected with  performance of individual
         civil  agreements per sample of the contract  agreements and agreements
         on rendering  services and performing  works. In such case the Partners
         that are performers of such  operations  shall bear material  liability
         for timely, full and qualitative performance thereof in compliance with
         requirements  of  the  legislation  in  force  and  appendices   hereto
         (operation  agreements).  Performance of such operations free of charge
         shall be the Labour  Contribution  into the Joint Activity.  Quality of
         the  Labour  Contribution  shall be  subject  to mutual  control by the
         Partners.

4.7      The business relations as to transfer of the property on records of the
         Balance  Sheet of Joint  Activity,  used by any of the  partners to the
         Agreement  that uses such  property when  performing  the works for the
         Joint  Activity,  shall be equalled  to the  relations  connected  with
         performance of individual civil agreements per sample of lease contract
         (leasing).

4.8      In the course of the Joint  Activity  the Partners  shall  consider the
         issues of alteration of the form of  organization of the drilling works
         keeping in mind  implementation of such a system when drilling entities
         are  performers of works  (services  related  to drilling)  rather than




                                       9
<PAGE>

         prime  contractors.  In so doing  organization  and logistic support of
         the construction of the wells shall be exercised  by the Manager who at
         the same time supervises formation of  the total value of the wells and
         funding their construction.

9. Section  5.1.3 of Article V "RIGHTS OF THE PARTNERS TO THE  AGREEMENT"  shall
have to be set forth in the following wording:

5.1.3    To obtain a share of the Incomes  from the Joint  Activity and in cases
         stipulated by the legislation of Ukraine, on the basis of an additional
         agreement - a share of the produce extracted hereunder.

10. The first and second paragraphs of Section 6.2 and Section 6.3 of Article VI
"DUTIES  OF THE  PARTNERS  TO THE  AGREEMENT"  shall have to be set forth in the
following wording:

6.2 In addition to the general duties "Ukrnafta" OJSC shall undertake:

6.2.1    To  organize   works   related  to   exploration   and   operation   of
         Rudivsk-Chervonozavodsk  deposit,  to keeping records of the Individual
         Balance  Sheet  of the  property  of  the  Partners,  of  the  business
         operations and the financial results of the Joint Activity thereof, and
         to assign to "Poltavanaftogas" OGPD performance of all deeds related to
         the duties of the Operator.

6.3      In addition to the general obligations the Company shall upon the
         request of the Manager undertake ....

11.  Section 7.6 of Article  VII "Joint  Activity  PROGRAM AND FUNDING  THEREOF"
shall have to be set forth in the following wording:

7.6      The Joint  Activity  Programs  in line with the Great  Risk  Operations
         shall have to  provide  for  compliance  with the  requirements  of the
         design     documents    for     exploration    and    development    of
         Rudivsk-Chervonozavodsk   deposit   approved   under  the   established
         procedure,  licenses and the license agreement. The Partners shall have
         no right to carry out in Rudivsk-Chervonozavodsk deposit works that are
         not stipulated by the Joint Activity  programs and are not separated as
         the Great Risk Operations.

12.  The title of  Article  VIII  "DESIGN  FOR  PILOT  PRODUCTION  OPERATION  OF
RUDIVSK-CHERVONOZAVODSK   DEPOSIT"   shall  have  to  be  changed  into  "DESIGN
DOCUMETATION FOR OPERATION OF RUDIVSK-CHERVONOZAVODSK DEPOSIT" and to supplement
the above article with Sections 8.3, 8.4, 8.5 in the following wording:


                                       10
<PAGE>



8.3      Within the Initial Period the Partners to the Agreement shall carry out
         the  works on making  more  precise  the  geological  structure  of the
         deposit, and shall assess substantiation of placement of the production
         wells planned for drilling, their number and advisability of use of six
         derricks for subsequent construction of wells.

8.4      The Company is  intending to submit for  consideration  of the Managing
         Committee the proposals on application  of the up-to-date  technologies
         for drilling wells with  slant-straight  and horizontal  borehole,  for
         perforation of the wells, for seam hydrofracture,  for simultaneous and
         separate  operation  of a number of levels in one well,  etc.,  for the
         purpose   of    formation    of   an   optimal   grid   of   wells   on
         Rudivsk-Chervonozavodsk  deposit,  of  achieving  the highest  economic
         indices of development thereof.

8.5      The  technological  documentation  for production  development shall be
         prepared   not   later   than  in  a  year   after  the   reserves   of
         Rudivsk-Chervonozavodsk deposit are approved.

13. Sections 9.2 and 9.3 of Article IX "GREAT RISK OPERATIONS"  shall have to be
set forth in the following wording:

9.2 The following can be considered as a Great Risk Operation:

         - carrying out additional seismic prospecting in plots of the earlier
         similar works carried out;

         - carrying out three-dimensional seismic studies;

         - drilling additional prospecting wells, and individual production
         wells;

         - other operations related to exploration and development of the
         deposit.

9.3      The Great Risk  Operations  can be carried out by the Partners at their
         own  expense  under  risk terms and  conditions.  In case of a negative
         result of such Great Risk  Operations  the  expenses  for  carrying out
         shall not be accounted of when determining the Partners' Actual Shares.

         In case  of  obtaining  a  positive  result,  as the  Partners  to this
         Agreement agree upon, the initiator of the Great Risk Operations  shall
         be  entitled to use the  results of such  operations,  namely to obtain
         100% of  Hydrocarbons  produced from the wells built or renovated under
         the Great Risk Operations  until the expenses  incurred when performing
         the above are reimbursed in the double amount.  After that Hydrocarbons
         produced from the above wells shall be considered as the produce of the
         Joint  Activity,  and the value of the Great  Risk  Operations  have no
         impact whatsoever upon distribution of the incomes between the Partners




                                       11
<PAGE>


         of  the Joint Activity.  In such case when seismic works are determined
         as the  Great Risk  Operations,  the expenses  allocated for conducting
         the above  operations  can, upon a decision of the Managing  Committee,
         be  referred  to  the  Balance  Sheet of Joint  Activity  and  shall be
         accounted of when determining the Partners' Actual Shares.

14. In Article X "BASIC AND ADDITIONAL HYDROCARBONS" the last paragraph of
Section  10.3  shall  have  to be  amended  and  the  article  shall  have to be
supplemented  with  Sections  10.4 and 10.5,  10.6  having set them forth in the
following wording:

10.3     ... the Income from sale of the Additional Hydrocarbons or they
         themselves, in case an additional agreement is signed, shall be
         distributed between the partners to this Agreement.

10.4     "Poltavanaftogas"  OGPD, prior to putting into operation the wells that
         are the  Objects of  Investment  Activity,  shall  have to provide  for
         technical  facilities to measure the produce from each well,  the total
         volume of produce extracted in the deposit and the commercial produce.

         Representatives   of  the  Partners  to  the  Agreement  together  with
         specialists  of OGPD shall  have to check  operation  of the  measuring
         units prior to launching the first well and later on not less than once
         a quarter.

         Operation  of the wells  shall not be allowed  for over 10 days in case
         the measuring units are not available or out of operation.

10.5     Division of the  commercial  produce of  Rudivsk-Chervonozavodsk
         deposit into the Basic and Additional  Hydrocarbons shall be exercised
         on the grounds of  individual  measurements  of the produce  from each
         well.  OGPD  shall  keep  records  of  production  of  the  Basic  and
         Additional  Hydrocarbons,  of the commercial produce per each day. The
         Balance Sheet of Joint  Activity  shall keep records of the volumes of
         the Additional  Hydrocarbons under the reports made by representatives
         of the Partners upon the end of a month.

10.6     OGPD shall bear liability for improper  performance of the  obligations
         related to  operation  of the wells in  compliance  with  technological
         conditions, for superstandard idleness of the wells, for loss and short
         production  under  the  conditions  to  be  determined  in  a  separate
         Operation Agreement.

15.  Sections  11.2,  11.5,  11.6,  11.7,  11.10 of  Article XI  "ACCOUNTING  OF
PROPERTY,  ACTIVITIES UNDER Joint Activity,  EXPENSES FOR IMPLEMENTATION THEREOF
AND RESULTS OF PRODUCTION" shall have to be set forth in the following wording:




                                       12
<PAGE>



11.2     Expenses for carrying out  exploratory  works,  drilling of  production
         wells, capital  construction  including acquiring equipment in Ukraine,
         performance of research and other expenses that are not referred to the
         Gross Costs on extracting the produce of the Joint  Activity,  shall be
         paid  for  from  the  Individual  Settlement  Account  to  be  kept  by
         "Poltavanaftogas"  OGPD in order to provide for the Joint Activity, and
         are reflected in the Individual Balance Sheet.

         When necessary, under the Joint Activity Programs, the Partners, at the
         expense of the own (unintegrated)  assets,  shall incur expenses of the
         capital  type and shall  refer them to the value of the  capital  funds
         which later on are put into records of the Individual  Balance Sheet of
         Joint Activity.

11.5     The Gross Costs for  extraction  of the  produce of the Joint  Activity
         shall be formed from the current  expenses for payment for the services
         of  "Poltavanaftogas"  OGPD and the Company listed in Sections 11.3 and
         11.4, and the services of other enterprises, from compulsory deductions
         and  payments  referred  to the  Gross  Costs  in  compliance  with the
         legislation in force, from expenses for acquiring  materials and energy
         resources, and other expenses.

         Wear and tear  (amortization) of the fixed assets on the records of the
         Individual  Balance  Sheet  shall be  calculated  under  the  procedure
         established by the legislation of Ukraine in force.

11.6     After the expenses for  extraction of the produce are recorded into the
         Individual  Balance Sheet, the financial  results of the Joint Activity
         shall be  formed.  Payment  of the tax on the  Profit  from  the  Joint
         Activity and distribution of thwe Incomes between the Partners shall be
         exercised in compliance  with the  requirements  of the  legislation of
         Ukraine in force.

11.7     The Partners shall fix reasonable settlement prices of the services for
         the Joint Venture on the basis of actual expenses  related to rendering
         such  services.  For the purpose of reliable  determining of the actual
         expenses  for  rendering  services  the  Partners  shall  organize  the
         accounting of expenses for services  rendered to the Joint Venture with
         application  of  a  system  of  sub-accounts.  The  general  production
         expenses of OGPD and the  Company  shall be referred to services to the
         Joint  Venture  at  the  criterion  to  be  determined  by  a  separate
         agreement.

11.10    The  accounting  shall be kept under the rules  fixed in  Ukraine,  and
         additionally  under the rules of the country of origin of the  Company,
         as from January 1, 1999, unless it (the Company) declares other,  later
         dates.

16. Section 12.1 of Article XII "TAXES AND PAYMENTS TO THE BUDGET" shall have
to be set forth in the following wording:


                                       13
<PAGE>


12.1     Taxes and  compulsory  payments to the budget and  non-budgetary  funds
         shall be paid in compliance with the requirements of the legislation of
         Ukraine  in force at the  expense  of  receipts  from sale of the Joint
         Produce and shall be kept on records of the Individual Balance Sheet.

17. Article XIII "PROPERTY RELATIONS OF THE PARTNERS" shall have to be set forth
in the following wording:

13.1     The property and pecuniary assets  transferred by the Partners onto the
         Individual Balance Sheet as well as those created, obtained or acquired
         in the process of the Joint  Activity and recorded into the  Individual
         Balance Sheet, shall form the Joint Share Property.  The Partners shall
         have no right to dispose of their share in the Joint  Property  without
         consent of the other Partners to this Agreement.

13.2     The incomes from the Joint Activity  shall be  distributed  between the
         Partners to this Agreement depending on the Actual Shares.

         The  Partners  to  the  Agreement  have  agreed  that  if  the  Accrued
         Contributions  of the Partners make up the ratio of 50:50 as stipulated
         by Section 21 hereof,  the Actual Share of "Ukrnafta" OJSC shall be 55%
         and the Actual Share of the Company shall be 45%.

          In  case  of   deviation   from  the  above   ratio  of  the   Accrued
         Contributions,  the Actual Share of the Company  shall be determined as
         the product of a share of its  Contribution  in the total amount of the
         Contributions  by  the  factor  0.9  (the  ratio  of  the  agreed  upon
         percentage of distribution of the Incomes to the agreed upon percentage
         of participation  in investment,  that is 45 divided by 50). The Actual
         Share of "Ukrnafta"  shall be determined as 100% minus the Actual Share
         of the Company.

13.3     The Accrued Contributions of "Ukrnafta" OJSC shall be calculated at the
         end of each quarter and shall include:

         - expenses  for  construction  and overhaul of the wells and objects of
         improvement  transferred to the Individual  Balance Sheet which are not
         related to production of Basic  Hydrocarbons  (on the basis of a report
         on assessment of the above tangible  assets at the estimating  value to
         be  determined  by a licensed  specialized  entity,  which report to be
         signed by all Partners);

         - pecuniary assets  transferred  onto the Individual  Balance Sheet for
         funding  the works of  drilling  and  repair of the  wells,  industrial
         construction,  acquiring the equipment and tools that are stipulated by
         the Joint Activity Programs;



                                       14
<PAGE>



         - the value of the  material  resources  acquired at the expense of the
         assets of  "Ukrnafta"  OJSC that are  transferred  onto the  Individual
         Balance Sheet;

         - the Labour  Contribution  namely the costs of OGPD incurred by way of
         cooperation at its own expense for  performance in compliance  with the
         Joint Activity  Program of the work, on its own or with  involvement of
         contractors,  related to contractual drilling,  industrial construction
         and overhaul at actual  contractual prices with accounting of the value
         of the material resources transferred to the contractors.

13.4     The Accrued  Contributions  of the Company  shall be  calculated on the
         quarterly basis and shall include:

         - pecuniary assets  transferred  onto the Individual  Balance Sheet for
         funding  the  works  stipulated  by the  Joint  Activity  Programs  for
         drilling and repair of the wells,  industrial  construction,  acquiring
         the equipment and tools;

         - value of the  material  resources  transferred  onto  the  Individual
         Balance  Sheet as a  Contribution;  - value of the services  related to
         drilling,  construction  and  overhaul  rendered  by the Company to the
         Joint   Venture  by  way  of   production   cooperation   (the   Labour
         Contribution) in compliance with the approved Joint Activity Programs.

13.5     In case the incomes from the Joint Activity are not distributed  within
         a quarter of accounting, they shall be deemed distributed hereunder and
         shall be subject to  entering  into the  Accrued  Contributions  of the
         Partners in the amounts of due payments.

13.6     The Accrued  Contributions  and the Shares in the  Investment  shall be
         subject to approval by the Managing Committee.

13.7     In case of  distribution  of the produce between the Partners one shall
         account of the  requirements  of the  legislation  of  Ukraine  and the
         agreements  achieved  herein as to the ratio  for  distribution  of the
         Incomes.

18.  Article  XIV "SALE OF PRODUCE OF THE Joint  Activity"  shall have to be set
forth in the following wording:

14.1     The  produce  of the  Joint  Activity  shall be sold by OGPD  under the
         powers of attorney of other Partners to the  Agreement.  In case of the
         produce  distribution  on the  basis of an  additional  agreement  sale
         thereof shall be carried out by either partner independently.

14.2     The business  relations as to performance by OGPD of operations related
         to sale of  Hydrocarbons of the Joint Activity shall be equalled to the
         relations  connected  with performance of specific civil agreements per
         sample  of  the  commission  agreements.   In  case  such  sale  is not


                                       15
<PAGE>


         exercised within 30 days and there are  no pecuniary assets received on
         the Individual  Settlement  Account of  the Joint Activity,  "Ukrnafta"
         OJSC,  within  the  subsequent 30 days,  can and will transfer into the
         Joint  Property  oil, gas  condensate or other highly liquid produce in
         the amount  equivalent  to  the value of the gas  subject  to  payment.
         Recalculation  into the  natural  equivalent  (oil,  gas  condensate or
         other highly liquid  produce) shall  be made at the prices in effect as
         on the moment of  its (such produce)  transfer into the Joint Property.
         (This  provision  shall  be  in  effect   within  the  time  period  of
         aggravations in sale of and payments for gas).

19. Article XVI  "COORDINATION OF THE Joint Activity AND MANAGEMENT OF THE JOINT
VENTURE" shall have to be set forth in the following wording:

16.1     Coordination  of the Joint Activity and management of the Joint Venture
         shall be exercised on the basis of decisions of the Managing Committee.

         The exclusive competence of the managing Committee shall include:

         - preparation of amendments and addenda hereto;

         - reconciliation of projects for development of deposits and projects
        of improvement, and submission for approval by governmental authorities;

         - approval of the Joint Activity Programs and of the Agreed Budgets,
        and control over performance of such decisions;

         - selection of  contractors  for  performance  of the works  related to
         drilling  the  boreholes,   comprehensive   geophysical   explorations,
         hydrofracture of seams and/or other works of high value;

         -  reconciliation  of contracts for performance of works for the amount
         in excess of one hundred thousand US dollars and contracts for purchase
         of the property to be transfered  onto the Individual  Balance Sheet in
         the amount over fifty thousand US dollars;

         - reconciliation of the terms and conditions for termination of the
         Joint Activity;

         - disposal of the Joint Property  including  determining  the procedure
         for sale of the produce of the Joint Venture.

16.2     Within  the  Initial  Period of the Joint  Activity  in  1997-1999  the
         Managing  Committee shall constitute of 4  representatives  from either
         Partner.  Upon  expiration of the above time period the  composition of
         the  Managing Committee shall have to be revised in such a way in order



                                       16
<PAGE>


         to account  of the Actual Share of the Partners in the Joint  Activity.
         Further on  the composition of the Managing  Committee shall be revised
         every two years depending on the Actual Shares.

         The   Managing   Committee   shall  be  headed  by  an   executive   of
"Poltavanaftogas" OGPD.

         The expenses for  organization  of operation of the Managing  Committee
         shall be funded from the Balance of the Joint Activity.

16.3     Decisions of the Managing  Committee shall be made through the majority
         individual vote of the Committee members.

         In case the Partners  fail to make a decision on  day-to-day  issues of
         the Joint Activity such as selection of a contractor, reconciliation of
         a contract for  performance  works or purchase of equipment,  the issue
         shall be submitted  for  consideration  by an expert group to be formed
         and operate  under the  procedure  set forth in Section  9.4, and after
         that the Managing Committee shall make the final decision.

16.4     The operative  management of the Joint  Activity  shall be exercised by
         the  Manager's  staff.  The Company  shall have the right to  recommend
         specialists  from among  foreign or  Ukrainian  citizens to be included
         into the  personnel  of  "Poltavanaftogas"  OGPD to the position of the
         deputy Manager and 3 leading engineers.

16.5     The Manager shall prepare documents required for the Managing Committee
         to make decisions on coordination of the Joint Activity.

16.6     The  Partners  have agreed to  consider,  within six months as from the
         date  this  wording  of  the   Agreement  is  signed,   the  issues  of
         advisability of and terms and conditions for use of foreign specialists
         recommended by the Company in the Manager's staff.

20.  Article XVIII  "JOINING THE  AGREEMENT"  shall have to be  supplemented  by
Section 18.3 in the following wording:

18.3     Any new Partner to the  Agreement  joining it upon consent of all other
         Partners  can  purchase  from any of them a portion of the share in the
         Joint  Property  that  will  also  require a  relevant  consent  of all
         Partners.

21. Sections 20.4 and 20.5 of Article XX "MUTUAL  RESPONSIBILITY OF THE PARTNERS
AND RESOLUTION OF DISPUTES" shall have to be set forth in the following wording:

20.4     In case the Partners fail to agree upon the issues of dispute through
         negotiations  within 60 (sixty) days  as from the date of  forwarding a


                                       17
<PAGE>


         notice by one partner to  the other  Partner on the dispute  available,
         the dispute shall be  submitted for  consideration  to the  Arbitration
         Institute of  Stockholm  Chamber of Commerce that finally  resolves the
         dispute.   The  Partners  have  agreed  that the  Arbitration  shall be
         carried  out in compliance with the provisions of UNCITRAL  Arbitration
         Rules. The  place of the Arbitrage shall be Stockholm,  Sweden. The law
         of substance  of Ukraine - the country of  performance  hereof shall be
         applied in  the course of  consideration  of disputes.  The Arbitration
         proceedings shall have to be carried out in Ukrainian and English.

20.5     The Arbitrage shall be constituted of 3 arbiters to be appointed in the
         following  way:  the  plaintiff  and the  defendant  shall  appoint one
         arbiter each who will jointly  appoint the third arbiter.  If within 30
         days  after the date of a notice  on  commencement  of the  arbitration
         proceeding the defendant fails to appoint an arbiter, such arbiter upon
         request of the plaintiff  shall be appointed by the  Institute.  If two
         arbiters  fail to  appoint  the  third  arbiter  within  30 days  after
         appointment  of  the  second  arbiter,  such  third  arbiter  shall  be
         appointed by the Institute  from among three  arbiters  proposed by the
         plaintiff.

22.  Article XXI  "TERMINATION  OF  OPERATIONS  UNDER THE AGREEMENT OR SEVERANCE
THEREOF" shall have to be set forth in the following wording:

21.1     This Agreement  shall become nill and void upon  expiration of the time
         period of its validity and in case of its premature severance.

21.2     Under the  unanimous  consent  of the  Partners  the  Agreement  can be
         terminated  prematurely,  prior to expiration of the fixed 25 year time
         period in case the Partners  arrive to a  conclusion  that the goals of
         the  Agreement  cannot  be  achieved  or  that it is not  advisable  to
         continue it in connection with unprofitability of the Joint Activity.

21.3     Either  Partner  can sever this  Agreement  unilaterally  in case other
         Partners fail to perform or improperly perform the terms and conditions
         of the Agreement.

21.4     In case one of the Partners intends to withdraw from the composition of
         the  partners  to this  Agreement,  it shall  have to notify  the other
         Partner thereabout  indicating the reasons thereof.  In case the latter
         has no  objections,  it shall notify about that within a fortnight.  In
         case of objections  available it shall also notify about its objections
         within the same time  period and about its plans to remedy the  reasons
         that have initiated  severance of the Agreement.  The Partner acting as
         the  initiator  of  severance  of the  Agreement  shall have to declare
         confirmation of its intent or  continuation  of the Joint Activity.  In
         case the  Partner - the  initiator  of  severance  of the  Agreement  -
         declares its  confirmation of the intent to sever the Agreement and the
         other Partner proceeds with objections, the issue shall be submitted to
         the Arbitrage.




                                       18
<PAGE>



21.5     In case  of the  Partners'  consent  to  sever  the  Agreement  or of a
         respective award of the Arbitrage,  the Managing Committee can consider
         the  issue of  situation  with  creditor  indebtedness.  In case of the
         credit  indebtedness  available,  the issue of repayment  thereof shall
         have to be resolved.

21.6     In case the credit  indebtedness is not available or fully repaid,  the
         Agreement shall be deemed as terminated  after  expiration of the three
         month time period after the consent for  severance of the  Agreement is
         received or a relevant  award of the Arbitrage is made,  and within the
         next three months the Partners shall perform mutual settlements related
         to distribution of the profit and division of the Joint Property.

21.7     In case of severance of the Agreement  "Ukrnafta"  OJSC shall undertake
         to buy from the Company a share of the Joint Property owned thereby. In
         so doing the  price of the  share of the  property  to be  redeemed  by
         "Ukrnafta" OJSC shall have to equal to its estimate value determined by
         an expert  (experts)  having a relevant  license.  The expert (experts)
         shall be  appointed  upon the  mutual  consent of the  Partners,  their
         services shall be paid for from the Balance of the Joint  Activity.  In
         such  case if the  Partners  fail to  agree as to  candidature  for the
         expert, the issue shall be forwarded to the Arbitrage. In such case the
         Company shall act as the plaintiff.  Settlements  related to redemption
         of a share in the Joint  property,  shall be  exercised  within six (6)
         months under the procedure stipulated by the legislation in force.

21.8     Upon termination of the Agreement  "Ukrnafta" OJSC can redeem the share
         of the  Joint  Property  owned  by the  Company  at  any  prices  to be
         respectively  agreed upon. If the Partners  disagree as to sale-and-buy
         of the share of the Joint Property owned by the Company,  the following
         procedures shall be exercised.

          Firstly,  one shall  consider  the issues  related to  liquidation  of
         wells,  pipelines and process  plants under the  prescribed  procedure.
         Liquidation  shall be funded at the expense of balance of assets on the
         Individual Settlement Account and assets of the Partners that will fund
         the  liquidation  works at the  ratio  formed  under  the  last  actual
         distribution of the profit from the Joint Activity. In case liquidation
         of the above  property is not advisable or impossible due to technical,
         geological  or other  reasons,  it shall  pass at the  disposal  of the
         Liquidation Commission to be formed by the Partners which commission is
         fully  authorized  to  terminate  the Joint  Activity,  to realize  the
         property  including its sale at auctions with no starting  price fixed,
         settlements with the Partners. In case the Liquidation Commission fails
         to realize such property as wells,  pipelines and process plants within
         six months,  they shall be  transferred  onto the balance  sheet of the
         principal activity of "Ukrnafta" OJSC.

21.9     Upon  termination  or severance of this Agreement the property given by
         the Partners for use to one another shall be given back to the owners.



                                       19
<PAGE>



21.10    The Partners  agree that this  Agreement can be terminated in case they
         create an individual  business  subject (a joint  venture) that will be
         given the rights for development of Rudivsk-  Chervonozavodsk  deposit.
         In such case the shares of the Partners in the Joint  Property shall be
         transferred onto the balance of such business subject as a contribution
         to the charter fund.

23. The Agreement  shall remain valid with  accounting  of amendments  listed in
Sections 1 - 22 of these amendments and addenda. As from the moment of the state
registration  of the above  amendments and addenda "The  Amendments to Agreement
No. 410/95 as of September 14, 1995,  between  "Poltavanaftogas"  enterprise and
"Carpatsky  Petroleum  Corporation"  company,  USA, on the joint  investment and
ptoduction    activity    related   to   development    and    exploitation   of
Rudivsk-Chervonozavodsk deposit" dated May 12, 1998, shall become nill and void.

         Signed in 4  duplicates  in  Ukrainian  and 4  duplicates  in Russian 4
duplicates for either Partner. All duplicates are of similar legal force.

                                   SIGNED BY:

For "Ukrnafta" OJSC


   Ya.I. Kozak
(Chairman of the Board)


   V.F. Kolisnyk
(acting head of "Poltavanaftogas" OGPD
under a power of attorney)

For Carpatsky Petroleum Corporation"
company

     L.K. Texas
     (President)




                                       20
<PAGE>

                                  ATTACHMENT 5
                               TO OPINION LETTER


                             Additions and Changes
               to the Contract # 410/95 dated September 14, 1995
for the investment, exploration and operation of Rudivsko-Krasnozavodskoye field
 revised on October 15, 1996 with amendments dated December 25, 1997 and August
                                    26, 1998

               (State Registration #1353-OO1K dated April 4, 1997
          Registered in Poltava Regional Foreign Relations Department)

City of Poltava April 23, 1999

OJSC   Ukrnafta,   represented  by  its  Chairman  of  the  Board  Eger  Dmitrii
Alexandrovich,  who is acting in accordance with the Charter, and by the Head of
the Production  Department (NGDU) of Poltavanaftogas  Kozak Vladimir  Pavlovich,
who is acting in accordance with the Power of Attorney from OJSC Ukrnafta on one
side, and Carpatsky  Petroleum  Corporation,  USA,  represented by its President
Leslie Texas and by the Member of the Board of Directors Fred Khofheins, who are
acting in accordance with the Charter on the other side, taking into account the
initial experience of joint implementation of this Contract,  have agreed to the
following changes and additions to the said Contract # 410/95:

Section XIV "SALE OF TIM PRODUCTION OUTPUT" shall be read as follows:


<PAGE>



14.1     Sale of the joint production output shall be conducted by OJSC Ukrnafta
         represented by NGDU Poltavanaftogas through Powers of Attorney form the
         other parties.  If the Company is not satisfied with the work performed
         by NGDU, it has the right to propose to the Managing Committee that the
         sale of the joint production  output,  or any part of it, for a certain
         period  of time  will be  conducted  by the  Company  though  Powers of
         Attorney from the other parties.

         If an  additional  agreement  provides that the output shall be divided
         between  the  parties,  each party is  responsible  for the sale of its
         share of the output.

14.2.    The  relationship  between parties with respect to the We of the output
         performed  by NGDU or the  Company  is the same as in the  contract  of
         agency.

14.3.    If NGDU,  performing  its  obligations  defined in Section 14.1 of this
         Contract, does not transfer the money into the Joint Account during the
         period  of 30 days  from the date of the sale,  OJSC  Ukrnafta  has the
         right,  during next 30 days, to transfer into the Joint Assets the oil,
         condensate  and other  output in the  amount  equal to the price of gas
         sold by NGDU.  The  volume of the oil,  condensate,  and  other  output
         transferred  into the Joint  Assets  shall be  calculated  based on the
         prices on the day of the  transfer.  This  Section  also  applies  when
         difficulties with sale or collection of payments exist.

This document is executed in four  counterparts  for each Party to the Contract.
All four counterparts are in the Russian language and have equal legal force.


Signed:

OJSC Ukrnafta                    Carpatsky Petroleum Corporation

By:      D. A. Eger              By:      L.K. Texas
(Chairman of the Board)          (President)


By:      V.P. Kozak              By:      Fred Khofheins
(Head of NGDU Poltavanaftogas             (Member of the Board of Directors)
through Power of Attorney)

<PAGE>

                                  ATTACHMENT 6
                               TO OPINION LETTER


                                     APPROVED
                                     By the decree of the Ministry of Foreign
                                     Economic Relations and Trade of Ukraine
                                     20 February 1997, #125


                        CARD OF STATE REGISTRATION OF THE
                          CONTRACT ON JOINT INVESTMENT
                       ACTIVITY WITH PARTICIPATION OF THE
                                FOREIGN INVESTOR.

                     Contract #410/95 of September 14, 1995

1. The subject of foreign economic activity of Ukraine - contract participant to
whom is entrusted with conducting joint businesses of the  participants.
(Name, pattern of property,  legal  address,  code ZUKPO,  surname,  name of the
chief, telephone)
The  enterprise   "Poltavnaftogas"   of  open  joint-stock   company
"Ukrnafta"
The collective  property Ukraine,  314000, city Poltava, 12 Radyanska
Street
Code ZUKPO 22525915
General  director - Kozak Vladimir
Tel: 7-45-91 fax: 7-91-57

2. Other participants of the contract
(Name,  pattern of property,  legal address,  code ZUKPO,  surname,  name of the
chief, telephone)
Carpatsky Petroleum Corporation
The corporate property
3000 Richmond Ave. Houston, TX 77098
President - Leslie Texas
Tel: 713 524-1745 fax: 713 524-2427
Registered representation in Ukraine: #II I-1249 from April 24, 1996
Code 23735804
Address of representation: room 505, Kudryavsky spusk 7, Kiev, Ukraine
Tel: 417-4371              fax: 417-1046

3. Kind of joint investment activity, stipulated in the contract:
Joint investment activity and joint production in the field of production of gas
and condensate, development of Rudovsko-Chervonozavodsky gas-condensate field.

4. Validity of the contract
20 (twenty) years from the moment of the conclusion

Post, surname,  name of the chief of the state registration body Head of foreign
economic relations department of Poltava area



<PAGE>



-    Peretyatko Petro
                                                       --------------------
                                                             (Signature)


Date of issue - April 4, 1997

Registration number #1353-001k

<PAGE>

                                  ATTACHMENT 7
                               TO OPINION LETTER


                     State Committee of Ukraine for Geology
                                 and Subsoil Use







                                  L I C E N S E

                           for exploratory operations























                                      Kiev



<PAGE>


The license is issued for geological exploration (exploratory & production
development)

Object name Rudivske-Chervonozavodske deposit

Mineral resources hydrocarbons

Object location Poltava oblast,  Lokhvytsky rayon
                NL 50o 30' - EL 33o 19'
                NL 50o 27' - EL 33o 32'
                NL 50o 24' - EL 33o 32'
                NL 50o 24' - EL 33o 18

License holder "Poltavanaftogas" a subsidiary enterprise of "Ukrnafta" JSC

License holder's address 12, Radyanska St., Poltava

Purpose of operations  Studies into the geological & production  characteristics
of deposits and determining optimal conditions for operation of the wells

Special conditions Extraction of hydrocarbons must not exceed 10% of the
assessed reserves


The license validity term has been extended for two (2) years

Deputy Chairman of the State Committee of Ukraine for Geology      B.O. Vyalyuk

January 28, 1997


License validity term 2 (two) years

Date of issue July 31, 1995

License registration number 470

Head of organization
Chairman of the State Committee of Ukraine for Geology            M. Gavrylenko



<PAGE>

                                  ATTACHMENT 8
                               TO OPINION LETTER


                     State Committee of Ukraine for Geology
                                 and Subsoil Use







                                  L I C E N S E

                           for exploratory operations























                                      Kiev



<PAGE>


The license is issued for geological exploration

Object name Rudivske-Chervonozavodske deposit

Mineral resources hydrocarbons

Object location Poltava oblast,  Lokhvytsky rayon
                NL 50o 30' - EL 33o 19'
                NL 50o 27' - EL 33o 32'
                NL 50o 24' - EL 33o 32'
                NL 50o 24' - EL 33o 18

License holder "Chernihivnaftogasgeologiya" SGE

License holder's address 15, Shevchenko St., Chernihiv

Purpose of operations Exploration of the geological structure of the deposit,
assessment of hydrocarbons reserves

Special conditions

License validity term 2 (two) years

Date of issue July 31, 1995

License registration number 469

Head of organization
Chairman of the State Committee of Ukraine for Geology            M. Gavrylenko


<PAGE>

                                  ATTACHMENT 9
                               TO OPINION LETTER


            STATE COMMITTEE OF UKRAINE ON GEOLOGY AND USE OF MINERAL
                                    RESOURCES

                                THE L I C E N S E

                (special resolution on use of mineral resources)

Registered No 968 from March 30, 1998

Type of use by mineral resources:      geological investigation (exploration)
                                       including pilot- commercial development
                                       geological investigation, (search,
                                       exploration), recovery etc.

Object of licensing:                   Ruduvsko-Chervonozavodskoye field
                                       Title of the field, section, geological
                                       territories etc.

Mineral resources:                     oil, gas, condensate
                                       main, associated, range of application

Object location:                       Poltava
Administrative region:                 Lokhvitsky
Landmarks:                             village Ruda and Chervonozavodskoye
                                       Direction, distance from the nearest
                                       locality, railway station, points of
                                       natural conservations

Geographic coordinates:

Northern Latitude                      50'30'05"  50'30'00" 50'25'40" 50'23'40"
                                       50'23'35"
East Longitude                         33'17'30"  33'22'55" 33'35'10" 33'21'20"
                                       33'17'50"

Area:                                  189.5 km2
                                       quantity, unit

The purpose of the license (operations):
                                       Exploration  of oil and gas reservoirs
                                       in Low-Carbonic depositions, pilot-
                                       commercial development   of   wells,
                                       reserves distribution  approval by State
                                       Commission  of  Reserves  of Ukraine
                                       with consequent industrial development of
                                       the field

Special (additional) license conditions:
                                            1. The operations are conducted
                                            according   to  the  terms  and
                                            conditions  of contract  "About
                                            joint  activity  on  geological
                                            investigation     of    mineral
                                            resources and  preparation  for
                                            industrial    development    of
                                            Rudovkso-    Chervonozavodskoye
                                            oil-gas-condensate  field "from
                                            December   30,   1997,    #5/27
                                            between   joint-stock   company
                                            "Ukrnafta"        and       GGP
                                            "Chernigivnaftogasgeologia". 2.
                                            Fulfillment  the  conditions of
                                            State   Control  of  ecological
                                            safety in Poltava  region  from
                                            February  19,  1998  #07-06-340
                                            (ecological card No. 97)




<PAGE>


The  license  owner:
                                        1.  Opened   joint-stock   company
                                        "Ukrnafta"  (NGDU "Poltavanaftogas")
                                        Code 00135390 254655, Kiev, Nesterovsky
                                        by-str. 3/5

The license is agreed:
                                        1. State control of ecological safety in
                                        Poltava region from February 19, 1998
                                        No. 07-06-340 (ecological card No. 97)

Validity of the license:                5 (five) years



Chairman of the Committee               S.V. Goshovsky



C:\1US-USER\CARPATSK\License 968.wpd

<PAGE>

                                 ATTACHMENT 10
                               TO OPINION LETTER



Approval from:                                   Agreed with:
Deputy Head of State                             Pozalin Y., Kozak Y.I.
Committee of Geology

    Signature      Tkach I. V.

(SEAL)


                               Agreement No. 5/27

 on joint productive activity for geological exploration of subsoils and
       preparation to production development of Rudivsko-Chervonozavodske
                          oil and gas condensate field


city of Poltava                                             December 30, 199__

         Guiding by the  Directive to grant  licenses to gas and oil  extraction
enterprises  for  geological  exploration  of subsoils  with right to subsequent
production  development  of fields  within IV  quarter  of 1997,  formulated  in
Protocol Resolution of Cabinet of Ministers of Ukraine on immediate measures for
stabilization  of oil and gas  extraction  dated July 31,  1997;  guiding by the
Directive  of  operational  conference  determining  further  works at fields of
Mehedivsko- Rudivska zone with view to accelerate and increase  effectiveness of
pilot production  exploitation  (PPE),  attended by  representatives  from State
Committee  of Oil  and  Gas  Industry,  State  Committee  of  Geology  and  OJSC
"Ukrnafta"  on December 13, 1997;  ChernigivNaftogasGeologia,  state  geological
enterprise,  hereinafter  referred  to as the SGE "CNGG" in person of  Maruhnyak
V.M. as acting General  Director,  acting in virtue of charter of the enterprise
from one side,  OJSC  Ukrnafta,  acting in virtue of the  charter,  in person of
Kozak V.P. as acting manager of NGVU  "Poltavanaftogaz",  structural subdivision
of OJSC  Ukrnafta,  acting in virtue of power of attorney,  from  another  side,
hereinafter  referred to as the "Participants"  have entered into this Agreement
as follows:

                              1. Basis of agreement

         NGVU  Poltavanaftogaz  of  OJSC  Ukrnafta  shall  obtain  licenses  for
geological   exploration  of  subsoils  with  right  to  subsequent   production
development of  Rudivsko-Chervonozavodske,  Svistunkovske,  Chervono-lutske  gas
condensate fields up to ___________ 1998.
         NGVU   Poltavanaftogaz  of  OJSC  Ukrnafta  shall  be  responsible  for
completion of  exploration,  PPE of said fields,  calculation  of  hydrocarbons'
deposits and preparation thereof for production development.
         The   "participants"   shall   act   jointly   and   coordinately   for
implementation of aforementioned assignments based on the terms hereof.

                             2. Subject of agreement

The subject of agreement shall constitute activity on geological  exploration of
subsoils at Rudivsko-Chervonozavodske,  Svistunkovske, Chervonolutske fields and
preparation thereof for production development.


<PAGE>




                            3. Performance procedure

         Joint  activities  of  participants  hereto shall be carried out as per
their joint  approval.  The profit shall be  attributable to each party with due
account to the  results  of its  business  activity  and no  liability  shall be
incurred for business activity of other party.
         3.1. The parties shall  arrange for  completion  of  exploration,  PPE,
calculation of hydrocarbons' deposits and submission thereof to State Commission
of Ukraine on Subsoil  Reserves with view to  explicitly  research the operation
regimes, parameters of deposits, and evaluation of productive potential thereof.
         3.2. Implementation of present agreement within five years.
         3.3. The parties  agree for search of investor to finance  drilling and
wells equipping works at said fields.
         3.4.  Oil  and  gas   explorative   expeditions  of  CNGG  shall  drill
explorative,  exploitative wells on the basis of bilateral  agreements with NGVU
Poltavanaftogaz.
         3.5.   The   Participants   shall   have  joint   thematic   geological
accompaniment  of  works  for  geological   research  of  field  under  specific
agreement.

                            4. Obligations of parties

4.1. CNGG shall acquire the following obligations:

4.1.1. To construct wells, to test objects and to prepare them for PPE.
4.1.2.  To  dismantle  drilling  equipment  and  reclaim  the soil on  territory
adjacent to wells in accordance with schedule.  4.1.3.  To transfer  deposits at
Rudivsko-Chervonozavodske,  Svistunkovske,  Chervonolutske  fields on balance of
OJSC  Ukrnafta up to April 1, 1998.  4.1.4.  To compile a summary on  geological
constitution  and  calculation of  hydrocarbons'  deposits and jointly with NGVU
Poltavanaftogaz  of OJSC Ukrnafta to obtain approval for it in State  Commission
of Ukraine on Subsoil Reserves.

4.2.  NGVU   Poltavanaftogaz   of  OJSC  Uknafta  shall  acquire  the  following
obligations:  4.2.1.  to finance  wells  drilling  works on  customer-contractor
terms.  4.2.2.  to  enter  into  agreements  (contracts)  for  investments  with
investors.   4.2.3.  to  issue  engagements  for  construction  of  explorative,
exploitative  wells,  allocation  of land plot for  constructing  and  equipping
wells.  4.2.4. to prepare and approve plans for  exploitation and drilling wells
with CNGG 4.2.5.  to arrange for  extraction  of oil and gas,  equipping  wells,
inputting thereof into PPE. 4.2.6. to exploit wells in accordance with PPE plans
and to quarterly  transfer the results of research and  information  on wells to
CNGG. 4.2.7. to prepare jointly with CNGG calculation of hydrocarbons'  deposits
at Rudivsko-  Chervonozavodske  field for submission to  consideration  of State
Commission of Ukraine on Subsoil Reserves and to finance these works.

                              5. Special provisions

5.1.  The  financing  of joint  works  shall be made from  various  sources:  of
internal origin, from state budget and in form of investments.


<PAGE>


5.2.  Settlements  with CNGG for the works done shall be made in accordance with
project-budget  documentation  (based on acts  [EF]-2) 5.3. SGE CNGG shall drill
not less than three explorative and exploitative  wells yearly.  5.4. In case of
impossibility  for reasons not  dependent  upon  parties to perform the terms of
this agreement,  the parties shall resolve to concretize its certain  provisions
within five days.

                             6. Liability of parties

6.1. For  non-performance  or undue  performance of this agreement,  the parties
shall be liable in accordance with effective legislation of Ukraine. 6.2. If the
parties came to no compromise, the dispute shall be settled in Arbitrage.

                              7. Term of agreement

The agreement  having been executed in two copies each with equal force shall be
effective as of the date of its signing and shall act under sec. 3.2


8. Addresses and requisites of parties


"Poltavanaftogaz" enterprise              SGE "ChernigivNaftogasGeologia"
Radyanska str., 12, city of Poltava,      Shevchenko str.,15, city of Chernigiv,
314000                                    250006
tel: 7-45-91, facsimile 7-91-57           tel: 7-70-81, facimile: 7-48-56
teletype 164106 "[EF]ak[ie][el]"          teletype 192196 "Ikap"
Checking account                          Checking account 208503 in Regional
209713, MFO 331478                        Department of Prominvestbank
Code of enterprise 22525915               MFO 353456
in Zhovtneve branch of JS                 city of Chernigiv
Prominvestbank, city of Poltava

(SEAL)

General Director of Poltavanaftogaz       Acting General Director
(Signature) Kozak V.P.                    (Signature) Maruhnyak V. M.

Agreed with:

Deputy Head of State Committee of Oil and Gas Industry
Signature Zarubin Y.O.
January  25,  1999



<PAGE>

                                 ATTACHMENT 11
                               TO OPINION LETTER



                                                   Appendix No.
                                           to Agreement No. 410/95 as of
                                         September   14,  1995,   on  the  joint
                                       production  and   investment   operations
                                       related  to  development  and  working of
                                       Rudivsk-Chervonozavodsk deposit with
                                           amendments and addenda dated
                                                  August 28, 1998

                                  (State registration as of April 4, 1997, under
                                       No. 1353-0015 with the Department for
                                           foreign economic relations of
                                                  Poltava oblast)

                                   AGREEMENT
on the procedure for operation of the wells of Rudivsk-Chervonozavodsk
deposit to be the joint  property of "Ukrnafta"  OJSC and  "Carpatsky  Petroleum
Corporation" American company,  collection,  preparation,  transportation of gas
and gas condensate from the above wells

Poltava                                                  August 31, 1998

         The Partners to Agreement No.  410/95 dated  September 14, 1995, on the
joint production and investment operations related to development and working of
Rudivsk-Chervonozavodsk  deposit  "Ukrnafta" CJSC represented by the chairman of
the board Kozak Yaroslav Ivanovych and the acting head of "Poltavanaftogas" OGPE
Kolisnyk  Volodymyr  Feodosiyovych,  on the one hand, and  "Carpatsky  Petroleum
Corporation"  company  represented by the president Lesly K. Texas, on the other
hand, have agreed as follows:

                              1. General Provisions

1.1      This  Agreement has been entered into in compliance with the provisions
         of Agreement No. 410/95 (Sections 4.1, 4.6, 10.4, 10.5, 10.6, 11.3,
         11.5).

1.2      This   Agreement  shall   stipulate    operation  of   the  wells   of
         Rudivsk-Chervonozavodsk  deposit  Nos.  106-P,  102-P,  104-P,  109-P,
         111-Ch,  100-Ch  that are the joint  property of  "Ukrnafta"  CJSC and
         "Carpatsky  Petroleum  Corporation"  company, and of other wells which
         will be  built in the  future  at the  expense  of the  assets  of the
         Partners to Agreement No. 410/95, maintenance of the pipelines running
         from the above wells.

1.3      The relations  between the Partners in connection with performance
         of works related to operation of the wells listed in Section 1.2, with
         collection,  preparation and  transportation of gas and gas condensate
         from the above wells, shall be equalled to performance of works


<PAGE>



         under specific  civil  agreements per sample of agreements for
         performance of works (rendering services).

         The Partners to Agreement No.  410/95  "Ukrnafta"  CJSC and  "Carpatsky
         Petroleum  Corporation"  company have agreed that under their powers of
         attorney the  functions of the Customer as to operation of the property
         shall be performed by "Poltavanaftogas"  OGPE, a division of "Ukrnafta"
         CJSC. At the same time  "Poltavanaftogas" OGPE shall act as a performer
         of  works  for  the  joint  interests  of the  Partners  in  the  Joint
         Operations.  Acceptance of the works  performed  hereunder and taxation
         thereof  shall be exercised  similar to agreements  on  performance  of
         works (rendering services).

1.4      Operation of the wells listed in Section 1.2 shall be exercised in line
         with the wells of  Rudivsk-Chervonozavodsk  deposit, the objects of the
         deposit improvement for collection, preparation,  transportation of the
         produce,  other structures and objects that are not the  subject-matter
         of Agreement No. 410/95.

         The indices of  operation  of the above wells shall be reflected in the
         statistic   reporting,   geological   reports   to   be   prepared   by
         "Poltavanaftogas" OGPE for the deposit as a whole.

1.5      The terms meaningful for  understanding  the content of the text hereof
         and the terms  specifically  defined in Agreement  No.  410/95 shall be
         written in the text of this Agreement with capital letter.

                       2. Subject-Matter of the Agreement

2.1      In  compliance  with the terms and  conditions  of Agreement No. 410/95
         "Ukrnafta"  CJSC and "Carpatsky  Petroleum  Corporation"  company shall
         assign and  "Poltavanaftogas"  OGPE shall assume the  obligations as to
         performance of the following works:

         - operation  and  maintenance  of the wells and pipelines in compliance
         with the effective  standards and rules for  protection of the subsoil,
         for protection of the environment, industrial safety, and in compliance
         with the processing conditions approved by the Managing Committee;

         - organization and performance of exploration of the wells and seams;

         - provision for  intra-deposit  collection of well produce,  systematic
         measurement  of discharge  of the wells,  accounting  total  volumes of
         production of the natural gas and gas condensate;

         - preparation of the natural gas, gas condensate, transportation of the
         commercial produce to consumers;

         - underground repair of the wells;


<PAGE>



         - current repairs of the capital funds of joint ownership.

2.2      The  procedure  for sale of the natural gas and gas  condensate  (Joint
         Operations  Hydrocarbons)  shall be determined by a separate  agreement
         (per sample of a commission  agreement) to be signed by the chairman of
         the board of "Ukrnafta" CJSC, by the president of "Carpatsky  Petroleum
         Corporation"  company and the head of  "Poltavanaftogas"  OGPE,  and it
         shall not be the subject-matter hereof.


             3. Organization and Procedure for Performance of Works

3.1      The works  listed in Section 2.1 (except  the works  stipulated  by the
         last two  paragraphs  of the above  Section  2.1) shall be performed by
         "Poltavanaftogas"  OGPE in line with the respective  operations related
         to other objects of the deposit which are not the Joint Property.  Such
         works shall be hereinafter  referred to as the Complex Operations.  The
         works  listed  in the two  last  paragraphs  of  Section  2.1  shall be
         performed as separate Individual Operations.

3.2      "Poltavanaftogas"  OGPE shall perform the works in compliance with this
         Agreement  through its own capacities as well as with  participation of
         other divisions of "Ukrnafta"  CJSC and other entities.  The agreements
         entered into by  "Poltavanaftogas"  OGPE with other divisions and other
         entities  as to  performance  of  the  Complex  Operations,  shall  not
         correspond hereto as sub-contracts.

3.3      OGPE  shall  guarantee  access  to  any  objects  of  the  deposit  for
         representatives of the Company who have been properly briefed as to the
         industrial safety as well as submission to the Company  representatives
         all initial  documents  necessary for analysing  operation of the wells
         and  preparing  proposals  as to  optimization  of  their  functioning,
         implementation  of geological and technical  measures for  intensifying
         the influx,  for ensuring  accident-free  operation of  structures  and
         equipment.

3.4      Technological  conditions for operation of the wells shall be developed
         by OGPE services and shall be subject to approval by the  management of
         "Ukrnafta" CJSC and "Carpatsky Petroleum Corporation" company.

         The Company  shall  submit  proposals  on  operation  of the wells,  on
         performance   of  works  related  to   exploration  of  the  wells  and
         optimization of their functioning  including involvement of specialized
         foreign and Ukrainian  enterprises  in writing to OGPE or to "Ukrnafta"
         CJSC.  Within a week time  period OGPE shall have to accept the Company
         proposals or to notify in writing that they cannot be implemented  with
         setting forth the reasons.  The Company  proposals  disapproved by OGPE
         shall be  considered  by the  Managing  Committee  as the  Company  may
         require.

3.5      The operating data as to the wells functioning, the works performed
         thereon, the results


<PAGE>



         of  measurements  of  discharges  shall  be  presented  to the  Company
         representative in Ukraine (contact telephone number in Kiev 2-61).

         Measurement  of  discharge  of the wells shall have to be made not less
         than once in ten days.  OGPE  shall have to ensure  performance  of the
         check  measurements  upon request of the Company with  participation of
         representatives  thereof.  A  relevant  report  shall  have to be drawn
         according  to  the  results  of the  check  measurements  of  the  well
         discharges to be signed by representatives of OGPE and the Company.

3.6      OGPE  shall   provide  for   implementation   of   organizational   and
         technological  measures for efficient protection of the underground and
         surface  equipment against  corrosion,  for preventing  hydration.  The
         above organizational and technological measures to be developed by OGPE
         services with  participation of the Company  representatives,  shall be
         subject to consideration and approval by the Managing Committee.
3.7      OGPE shall  provide for bringing gas and gas  condensate  to commercial
         conditions  in  compliance  with  the  effective  state  standards  and
         technical requirements of consumers. OGPE shall bear property liability
         for the produce failure to comply with such standards and requirements.

                     4. Requirements to Performance of Works

4.1      The works related to production of gas and gas condensate,  maintenance
         of the wells and other objects to be the Joint Property of the Partners
         to the Agreement,  shall be carried out by complying with the effective
         standards  and  rules.  OGPE shall be liable  for  preservation  of the
         environment.

4.2      The works related to collection and itra-deposit transportation of
         the well produce, separation,  drying, ............ and supply thereof
         to the system of the main  transportation,  shall be performed by OGPE
         capacities  with  application  of  the  property  thereof,   and  with
         participation   of  other  divisions  of  "Ukrnafta"  CJSC  and  other
         entities.

                          5. Accounting of the Produce

5.1      OGPE shall keep the  accounting of the gross and commercial gas and gas
         condensate.  The total volume of the  commercial gas and gas condensate
         shall be  calculated  as a sum of  production  of the natural gas ( gas
         condensate  respectively) from individual wells. In its turn the volume
         of  production  shall be  calculated  as product of the  discharge  and
         duration  of  operation  less  technological  costs  for the  system of
         collection,  preparation, storage and transportation which costs exceed
         the standard costs effective in OGPE.

5.2      "Poltavanaftogas"  OGPE  shall  draw up  reports  as to the  volumes of
         production,  transportation  of the natural gas and gas condensate from
         the wells that are the joint  property of the Partners to Agreement No.
         410/95.  The above  reports  shall be subject to being agreed upon with
         representatives of "Carpatsky Petroleum Corporation" company


<PAGE>



         and transferred to the service of  "Poltavanaftogas"  OGPE in charge of
         keeping  the  Individual  Balance  Sheet  of the  Joint  Operations  in
         compliance  with  Agreement  No. 410/95 (the samples of the reports are
         given in Appendices 1 and 2).

                                6. Cost of Works

6.1      The cost of the Complex  Operations related to maintenance of the wells
         in III quarter of 1998 is given in Appendix 3 hereto.

6.2      Further on the cost of the Complex  Operations  shall be  determined on
         the  basis of actual  expenses  on  production  of gas and oil with gas
         condensate incurred in "Poltavanaftogas" OGPE within a quarter.

         The cost of performance of the Complex  Operations  shall be determined
         upon  completion  of each  quarter  and  approved  by the  Partners  to
         Agreement No. 410/95.

6.3      When  determining  the cost of the  Complex  Operations  the  following
         calculations shall have to be made.

         The total sum of the  actual  costs of OGPE for  production  of the own
         gross  produce  and  rendering   services   related  to  production  of
         Hydrocarbons  of  the  Joint   Operations   shall  be  calculated  with
         accounting of the following items:

         1.       Power for production of oil.
         2.       The basic wage of the principal employees.
         3.       Additional wage.
         4.       Deductions for social insurance.
         5.       Amortization of the wells.
         6.       Costs for maintaining seam pressure.
         7.       Costs for collection and transportation of oil and gas.
         8.       Costs for preparation of oil, gas condensate and gas.
         9.       Costs for maintenance and operation of the equipment.
         10.      Department costs.
         11.      Total production costs,
                  including
                  a)       charge for use of ............, state levy and a
                  charge into the innovation fund.
         12       Other production costs.

         The total  sum of the costs  under  the  above  listed  items  shall be
         allocated for production of the own produce and for rendering  services
         related to production of  Hydrocarbons of the Joint  Operations.  In so
         doing the costs  under  Items 1, 5, 6, 11a and 12 shall be  referred to
         the produce of the own production exclusively.

         The costs under Items 2, 3, 4 shall be referred to the self-cost of the
         own produce and


<PAGE>



         services  related to production of Hydrocarbons of the Joint Operations
         on the basis of the initial documents on the actual labour consumption.

         The  costs  under  Item 7 shall  be  referred  to the own  produce  and
         Hydrocarbone  of the Joint  Operations  in proportion to the volumes of
         production thereof.

         The costs under Item 8 shall be referred to oil and gas  condensate  of
         the own  production  and the  services  related  to  production  of the
         respective  types of Hydrocarbons of the Joint Operations in proportion
         to the volumes of production thereof.

         The costs  under  Items 9, 10, 11 (less 11a) shall be  referred  to the
         produce of the own production and the services related to production of
         Hydrocarbons  of the Joint  Operations  in  proportion to the effective
         fund of the production wells.

         The costs  under Item 11 less 11a shall be  referred  to the produce of
         the  own  production   and  the  services   related  to  production  of
         Hydrocarbons  of the Joint  Operations  in proportion to the volumes of
         production thereof.

         On the  basis  of such  allocation  the  total  sum of  costs  shall be
         determined  relative to rendering  services  related to  production  of
         Hydrocarbons of the Joint Operations.

         The total value of the works  performed  and the services  rendered for
         production of the produce of the Joint Operations shall be equal to the
         above costs. VAT shall be paid in addition to the above.
6.4      The value of ............performance of such works. The estimates shall
         be developed by "Poltavanaftogas" OGPE services and approved by the
         Managing Committee.

                          7. Procedure for Settlements

7.1      Settlements  for  the  Complex  Operations   performed  shall  be
         exercised  by  .............payments  by the 29th day of each month in
         the amount of 15% of the value of the anticipated volume of production
         of the Joint Operations  Produce in a quarter.  The balance settlement
         shall  be  exercised  upon  the  end  of  the  quarter,  after  having
         determined  the cost of the services,  within 10 days after a relevant
         report has been signed (a sample is given in Appendix 4).

7.2      Settlements  for  performance  of  the  works  determined  as the
         Individual  Operations  shall be exercised within a 10 day time period
         after a relevant  report has been signed.  The  Individual  Operations
         performance of which is caused due to the fault of OGPE as a result of
         violation of the technological  conditions of the wells functioning or
         of the  requirements  to operation of  structures,  equipment  through
         ........................ organizational and technological measures for
         protection of the  equipment and  structures  agaunst  corrosion,  and
         prevention  of  hydration,  shall  not  be  subject  to  payment  from
         ............. of the Joint Operations.


<PAGE>




                      8. Procedure for Acceptance of Works

8.1      The works  determined  as the  Complex  Operations  and the  Individual
         Operations  shall be considered as performed after the relevant reports
         on  the   works   performed   have  been   approved   by  the  head  of
         "Poltavanaftogas" OGPE. The above reports shall be subject to mandatory
         agreement  on the  part of a  representative  of  "Carpatsky  Petroleum
         Corporation" company.



<PAGE>

                                 ATTACHMENT 12
                               TO OPINION LETTER



APPROVED                                         APPROVED

Chairman of the Board                            Vice Chairman of
Opened JSC Ukmafta                                       Goskomgeology
_______________B.V. Zaritsky                     ______________B.O. Byaluk
May 16,1995                                              May 16,1995


City of Poltava

                                    CONTRACT

             between Chernigovneftegasgeologiya and Poltavaneftegas
   for the joint exploration and operation of Rudivsko-Krasnozavodskoye field

The  state  geological  entity  Chernigovneftegasgeologiya,  represented  by its
General  Manager Ginda Stepan  Mefodievich  (hereinafter  called "ChNGG") on one
side, and JSC Ukrnafta of  Poltavaneftegas,  represented by its General  Manager
Kazak  Vladimir  Pavlovich  (hereinafter  called "PNG") on the other side,  have
entered into this  contract  for the joint  exploration  and  operation of wells
#2,3,4,5,6,7,8, and 9 of Krasnozavodskoye field and wells #7 and 9 of Rudivskoye
field.

          1.      Subject and  Implementation  of the Contract Both parties have
                  agreed to the following:
1.1      To ensure  detailed  evaluation  of the field  parameters  and  working
         conditions,  and accurate  assessment  of the  industrial  value of the
         filed,  both parties  agreed to jointly  commence a final  construction
         stage  for the  above-listed  wells,  as well  as to  jointly  explore,
         operate, process, transport and sell raw materials (gas, condensate) on
         both internal and international markets.

1.2.     This  contract  shall be  implemented  in two  stages.  Stage one is to
         finish well  construction  in  1995-1996,  and stage two is to complete
         wells  (according  to  the  exploration  data)  and  to  commence  well
         operation in 1995-1996.

1.3.     Production  volumes shall be calculated  based on the exploration  data
         and according to the IPE schedules.

         2. Obligations of the Parties
2.1.     ChNGG shall:
2.1.1.   Complete the  construction  of wells,  test them and transfer to PNG as
         assets in accordance with the agreed schedule.
2.1.2.   Disassemble the drilling equipment and reclaim the land around wells in
         accordance with the timetable.
2.1.3.   Furnish equipment  and drilling  crews for the  completion  of wells of
         Krasnozavodskoye field. 2.2. PNG shall:
2.2.1.   Finance and procure casing, tubing X-mas Trees.
2.2.2.   Create the exploration and production  schedules and submit them to PNG
         for  approval. 2.2.3. Ensure well completion.  2.2.4. Ensure that wells
         operate in accordance  with  the IPE schedules,  current Well Operation
         Rules and published standards.
2.2.5.   Conduct all exploration according to the IPE schedules and transfer the
         results to ChNGG.
2.2.6.   Produce,  collect,  and  pre-process the well output,  as well as
         transport gas (gas  condensate) from the well to the railroad
         (pipeline).  A special two-party  agreement shall be executed when
         gas is delivered to the pipeline.
2.2.7.   Finance well completion performed by the Nezhinsk NGREVC.

         3.       Important Conditions
3.1.     ChNGG  shall  prepare  separate   transfer-acceptance   documents  when
         unloading the ChNGG's share of gas (gas condensate) to the consumer.
3.2.     Well output (gas and gas condensate) shall be divided as follows:
3.2.1.   From the wells that belong to PNG, PNG shall receive 70%, and ChNGG
         shall receive 30%. 3.2.2. From Krasnozavodskoye wells #2,3,4,5,6, and 7
         that belong to PNG, PNG shall receive 80%, and ChNGG shall receive 20%.
3.3.     Production  cost of gas and gas condensate that is transferred to ChNGG
         shall be calculated according to the wholesale prices on the day of the
         transaction.   These  prices  shall   include  the   applicable   taxes
         established by the Ukrainian Government.

<PAGE>


         In 1996  PNG  shall  reimburse  ChNGG  with  oil  (condensate)  for the
         drilling  of  production  wells.  The  volume  shall be  calculated  in
         accordance with prices listed in Section 3.3.
3.4.     ChNGG has a right to inspect the timing and quality of the exploration
         works.
3.5.     If the  performance  of this  contract is prevented by a cause that is
         beyond the control of both parties, the parties have five days to make
         a decision on adjusting the conditions of the contract.

         4.       Responsibilities of the Parties
4.1.     Parties are responsible for nonperformance or incomplete performance of
         their  obligations set forth in this contract  according to the current
         laws of the state of Llkraine.
4.2.     All  disputes  between  parties  that  cannot be  settled by the mutual
         agreement shall be referred to arbitration.

         5.     Term of the Contract
5.1.     This contract is executed in two  counterparts,  which have equal legal
         force,  and is valid from the date of its  execution  until  January 1,
         1997.

         6. Addresses, Bank Accounts
Poltavaneftegas
         314000 Poltava
         Ul. Sovietskaya, 2
         Tel:     7-4591
         Fax:   7-9157
         Telex: 164106 "Fakel"
         Account Number:   209713 MFO 331478
         Code: 2252915 at Oktyabrskoye branch of AK Prominvestbank City of
               Poltava

GGP Chernigovneftegasgeologiya
         250006 Chernigov
         Ul.Shevchenka,15
         Tel:     7-7081
         Fax:   7-4856
         Telex: 192196 "Ikar"
         Account Number: 208503 at regional branch of Prominvestbank, MFO
                         353456, City of Chernigov

General Manager, PNG                General Manager, ChNGG

V.P. Kazak                                   S.M. Ginda
May 16, 1995                                 May 16, 1995

<PAGE>

                                 ATTACHMENT 13
                               TO OPINION LETTER



                              AGREEMENT (PROTOCOL)


 between Chernigovneftegasgeologia and Poltavaneftegas for the joint exploration
   and operation of Rudivsko-Krasnozavodskoye, Mekhedivskoye, Svistunkovskoye,
            Sviridovskoye, and Chervonolutskoye gas condensate fields


City of Poltava                                                           1995

1.   Subject and Implementation of the Agreement

     The  state geological  entity Chernigovneftegasgeologiya,   represented  by
its General Manager Ginda Stepan Mefodievich (hereinafter called "ChNGG") on one
side, and JSC Ukrnafta of  Poltavaneftegas,  represented by its General  Manager
Kazak  Vladimir  Pavlovich  (hereinafter  called "PNG") on the other side,  have
entered  into  this  agreement  for  the  joint  exploration  and  operation  of
Rudivsko-Krasnozavodskoye, Sviridovskoye, Mekhedivskoye and other fields.

     Both parties have agreed to the following:

1.   To  ensure  detailed   evaluation  of  the  field  parameters  and  working
     conditions,  and accurate  assessment of the industrial value of the filed,
     both parties agreed to jointly  commence a construction  of exploration and
     pilot production wells for exploration, production, transportation and sale
     of raw materials (gas, condensate).

2.   Both  parties  agreed to jointly  look for an Investor to finance the final
     stage   of   exploration,   as  well  as  IPE  and   well   completion   at
     Rudivsko-Krasnozavodskoye, Sviridovskoye, Mekhedivskoye and other fields.

     PNG, after ChNGG's  approval,  shall execute the agreement with an Investor
     for the performance of said services.

3.   Both parties shall jointly create a budget that accounts for:
     1.   Upgrading  of ChNGG's  drilling  equipment-up  to 5 drilling  rigs (in
          1995-1996).
     2.   Financing of construction of surface facilities.
     3.   Financing  of  utilization  of  western   technologies  such  as  GRN,
          development of productive  horizons within hydrocarbon  bearing basin,
          and others.

3.1. Both parties shall name the Investor in a separate agreement and then shall
     agree to the amount of the investment.

4.   Production  volumes shall be calculated  based on the exploration  data and
     according to the IPE schedules.
4.1. Both parties agreed to the following division of the well output: 30% ChNGG
     70% PNG
4.2. Additional  output  that  was  produced  due  to  the  utilization  of  new
     technologies financed by the Investor shall be divided as follows:
     1.   PNG and ChNGG  jointly  define  the  Investor's  share  that  shall be
          detailed in a three party agreement.


<PAGE>


     2.   The rest of the output  shall be divided as  follows:  ChNGG  receives
          25%, PNG receives 75%.
     3.   Payments  between  PNG and  ChNGG  shall  be  calculated  based on the
          wholesale prices for PNG on the day of the transaction.
     4.   Each  party  receives   profit  based  on  its  activity  and  is  not
          responsible for the activity of the other party.
          PNG shall finance the following:
     1.   Pilot production drilling
     2.   Surface facilities

     3.   Loan payments (including interest)

     [**TRANSLATOR'S NOTE: Sections 5 and 6 are missing from the original**]
7.   Within three months from the date of execution of the Agreement,  ChNGG and
     PNG shall receive licenses for the geological  exploration and operation of
     Rudivsko- Krasnozavodskoye,  Sviridovskoye, Mekhedivskoye, Svistunkovskoye,
     and Chervonolutskoye fields.
8.   PNG shall:
     1.   Transfer  to ChNGG all  drilling  sites at  Rudivsko-Krasnozavodskoye,
          Sviridovskoye, and Mekhedivskoye fields upon the completion of wells #
          102, 103, and 105 of Rudivskoye field.
     2.   Finance the next stage of pilot production at the above-listed fields.

9.   Parties are responsible for  non-performance  or incomplete  performance of
     their  obligations  set  forth in this  agreement  in  accordance  with the
     current laws of the state of Ukraine.
10.  his  agreement  is  executed  in two  counterparts,  which have equal legal
     force, and is valid from the date of its execution until January 1, 1997.
11.  Addresses, Bank Accounts:

11.1. Poltavaneftegas
      314000 Poltava
      Ul. Sovietskaya, 2
      Tel:     7-4591
      Fax:     7-9157
      Telex:   164106 "Fakel"
      Account Number:   209713 MFO 331478
      Code:             2252915 at Oktyabrskoye branch of AK Prominvestbank
                        City of Poltava

11.2. GGP Chernigovneftegasgeologiya
      250006 Chernigov
      Ul. Shevchenka, 15
      Tel:     7-7081
      Fax:     7-4856
      Telex:   192196 "Ikar"
      Account Number:     208503 at regional branch of Prominvestbank, MFO
                          353456, City of Chernigov

         General Manager, PNG                General Manager, ChNGG
         V.P. Kazak                          S.M. Ginda
         May 16, 1995                        May 16, 1995



<PAGE>




APPROVED                                  APPROVED
Chairman of the Board                     Vice Chairman of
JSC Ukrnafta                              Goskomgeology
_____________B.V. Zan'tsky                _________________B.O. Byaluk
May 16, 1995                              May 16,1995








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