FORM 10-K405
                 SECURITIES AND EXCHANGE COMMISSION
                       Washington, D.C.  20549
        ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                   SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 1999

Commission File Number:
I-D: 0-15831  I-E: 0-15832  I-F: 0-15833

            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F
            ---------------------------------------------
       (Exact name of Registrant as specified in its Articles)

                                            I-D 73-1265223
                                            I-E 73-1270110
            Oklahoma                        I-F 73-1292669
---------------------------------       ----------------------
(State or other jurisdiction of         (I.R.S. Employer
 incorporation or organization)          Identification No.)

         Two West Second Street, Tulsa, Oklahoma      74103
         ---------------------------------------------------
         (Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: (918) 583-1791

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act:
Depositary Units in Geodyne Energy Income Limited Partnerships
I-D through I-F

      Indicate by check mark  whether the  Registrant  (1) has filed all reports
required to be filed by Section 13 or 15(d) of the  Securities  Exchange  Act of
1934  during  the  preceding  12 months  (or for such  shorter  period  that the
Registrant  was  required to file such  reports) and (2) has been subject to the
filing requirements for the past 90 days. Yes  X     No
                                             -----       -----

      Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation  S-K (Sec.  229.405 of this chapter) is not contained  herein,
and will not be contained,  to the best of registrant's knowledge, in definitive
proxy or information  statements  incorporated  by reference in Part III of this
Form 10-K405 or any amendment to this Form 10-K405.

            X Disclosure is not contained herein.
         -----




                                      -1-
<PAGE>





                Disclosure is contained herein.
          -----

      The Registrants are limited partnerships and there is no public market for
trading in the partnership interests.

              DOCUMENTS INCORPORATED BY REFERENCE: None



                                      -2-
<PAGE>






                                  FORM 10-K405
                                TABLE OF CONTENTS


PART I........................................................................4
      ITEM 1.   BUSINESS......................................................4
      ITEM 2.   PROPERTIES....................................................9
      ITEM 3.   LEGAL PROCEEDINGS............................................18
      ITEM 4.   SUBMISSION OF MATTERS TO A VOTE OF LIMITED PARTNERS..........18

PART II......................................................................18
      ITEM 5.   MARKET FOR UNITS AND RELATED LIMITED PARTNER MATTERS.........18
      ITEM 6.   SELECTED FINANCIAL DATA......................................21
      ITEM 7.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL
                CONDITION  AND  RESULTS  OF OPERATIONS.......................25
      ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES
                ABOUT MARKET RISK............................................40
      ITEM 8.   FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA..................40
      ITEM 9.   CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON
                ACCOUNTING AND FINANCIAL DISCLOSURE..........................40

PART III.....................................................................40
      ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE GENERAL PARTNER..... 40
      ITEM 11.  EXECUTIVE COMPENSATION.......................................41
      ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS
                AND MANAGEMENT...............................................46
      ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS...............47

PART IV......................................................................49
      ITEM 14.  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND
                REPORTS ON FORM 8-K..........................................49

SIGNATURES...................................................................54




                                      -3-
<PAGE>




                                    PART I.


ITEM 1. BUSINESS

      General

      The Geodyne Energy Income Limited Partnership I-D (the "I-D Partnership"),
Geodyne  Energy Income  Limited  Partnership  I-E (the "I-E  Partnership"),  and
Geodyne  Energy  Income  Limited   Partnership   I-F  (the  "I-F   Partnership")
(collectively,  the  "Partnerships")  are limited  partnerships formed under the
Oklahoma  Revised Uniform Limited  Partnership Act. Each Partnership is composed
of public  investors as limited  partners (the "Limited  Partners")  and Geodyne
Resources, Inc. ("Geodyne"), a Delaware corporation, as the general partner. The
Partnerships commenced operations on the dates set forth below:

                                        Date of
                   Partnership        Activation
                   -----------    ------------------

                       I-D        March 4, 1986
                       I-E        September 10, 1986
                       I-F        December 16, 1986

      Immediately following  activation,  each Partnership invested as a general
partner in a separate  Oklahoma general  partnership which actually conducts the
Partnerships' production operations.  Geodyne serves as managing partner of such
general partnerships.  Unless the context indicates otherwise, all references to
any single  Partnership or all of the Partnerships in this Annual Report on Form
10-K405  ("Annual  Report") are  references to the  Partnership  and its related
general  partnership,  collectively.  In addition,  unless the context indicates
otherwise,  all  references  to the "General  Partner" in this Annual Report are
references  to Geodyne as the general  partner of the  Partnerships,  and as the
managing partner of the related general partnerships.

      The  General  Partner  currently  serves as general  partner of 26 limited
partnerships,  including the Partnerships. The General Partner is a wholly-owned
subsidiary  of Samson  Investment  Company.  Samson  Investment  Company and its
various  corporate  subsidiaries,  including the General  Partner  (collectively
"Samson"),  are  primarily  engaged in the  production  and  development  of and
exploration  for oil and gas  reserves  and the  acquisition  and  operation  of
producing   properties.   At  December  31,  1999,  Samson  owned  interests  in
approximately 14,000 oil and gas wells located in 17 states of the United States
and the countries of Canada, Venezuela, and Russia. At December 31, 1999, Samson
operated  approximately  3,400  oil and gas  wells  located  in 15 states of the
United States, as well as Canada, Venezuela, and Russia.



                                      -4-
<PAGE>



      The Partnerships are currently engaged in the business of owning interests
in producing oil and gas properties  located in the  continental  United States.
The Partnerships may also engage to a limited extent in development  drilling on
producing oil and gas  properties as required for the prudent  management of the
Partnerships.

      As limited partnerships,  the Partnerships have no officers, directors, or
employees.  They rely instead on the  personnel  of the General  Partner and the
other Samson Companies.  As of February 15, 2000, Samson employed  approximately
920 persons. No employees are covered by collective bargaining  agreements,  and
management believes that Samson provides a sound employee relations environment.
For information  regarding the executive  officers of the General  Partner,  see
"Item 10. Directors and Executive Officers of the General Partner."

      The General Partner's and the Partnerships' principal place of business is
located at Samson Plaza,  Two West Second Street,  Tulsa,  Oklahoma  74103,  and
their telephone number is (918) 583-1791 or (888) 436-3963 [(888) GEODYNE].

      Pursuant to the terms of the partnership  agreements for the  Partnerships
(the  "Partnership  Agreements"),  the  Partnerships  would have  terminated  on
December 31, 1999. However, the Partnership  Agreements provide that the General
Partner may extend the term of each  Partnership  for up to five  periods of two
years each. The General Partner has extended the terms of  Partnerships  for the
first two year extension period to December 31, 2001.

      Funding

      Although  the  Partnership  Agreements  permit each  Partnership  to incur
borrowings,   operations   and  expenses  are  currently   funded  out  of  each
Partnership's  revenues from oil and gas sales.  The General Partner may, but is
not required to, advance funds to a Partnership  for the same purposes for which
Partnership borrowings are authorized.


      Principal Products Produced and Services Rendered

      The  Partnerships'  sole  business  is  the  production  of,  and  related
incidental  development  of,  oil and gas.  The  Partnerships  do not  refine or
otherwise  process crude oil and  condensate.  The  Partnerships do not hold any
patents,  trademarks,  licenses,  or  concessions  and are  not a  party  to any
government  contracts.  The  Partnerships  have no  backlog of orders and do not
participate in research and development  activities.  The  Partnerships  are not
presently  encountering  shortages  of  oilfield  tubular  goods,   compressors,
production material, or other equipment.



                                      -5-
<PAGE>



      Competition and Marketing

      The  domestic  oil and gas  industry is highly  competitive,  with a large
number of companies and  individuals  engaged in the exploration and development
of oil and gas properties. The ability of the Partnerships to produce and market
oil and gas  profitably  depends  on a number of  factors  that are  beyond  the
control  of  the  Partnerships.   These  factors  include  worldwide   political
instability  (especially  in  oil-producing  regions),   United  Nations  export
embargoes,  the supply and price of foreign imports of oil and gas, the level of
consumer product demand (which can be heavily  influenced by weather  patterns),
government  regulations  and taxes,  the price and  availability  of alternative
fuels,  the overall economic  environment,  and the availability and capacity of
transportation and processing facilities.  The effect of these factors on future
oil and gas industry trends cannot be accurately predicted or anticipated.

      The most important  variable  affecting the Partnerships'  revenues is the
prices  received for the sale of oil and gas.  Predicting  future  prices is not
possible.  Concerning  past trends,  average  yearly  wellhead gas prices in the
United  States have been  volatile for many years.  Over the past ten years such
average  prices  have  generally  been in the $1.40 to $2.40 per Mcf range.  Gas
prices are currently in the upper end of this range.

      Substantially  all of the Partnerships' gas reserves are being sold on the
"spot  market."  Prices on the spot  market  are  subject to wide  seasonal  and
regional pricing  fluctuations due to the highly  competitive nature of the spot
market. In addition,  such spot market sales are generally  short-term in nature
and are dependent  upon the  obtaining of  transportation  services  provided by
pipelines.  Spot prices for the Partnerships'  gas increased from  approximately
$2.03 per Mcf at December  31, 1998 to  approximately  $2.24 per Mcf at December
31, 1999. Such prices were on an MMBTU basis and differ from the prices actually
received by the  Partnerships  due to  transportation  and marketing  costs, BTU
adjustments, and regional price and quality differences.

      For the past ten years,  average  oil prices  have  generally  been in the
$16.00 to $24.00 per barrel  range,  but have been  extremely  volatile over the
past two  years.  Due to  global  consumption  and  supply  trends  as well as a
slowdown in Asian energy demand,  oil prices in late 1997 and early 1998 reached
historically low levels,  dropping to as low as approximately  $9.25 per barrel.
However,  production  curtailment  agreements among major oil producing  nations
have  caused  recent  oil  prices  to climb to over  $24.00  per  barrel in some
markets.  It is not known  whether  this  trend  will  continue.  Prices for the
Partnerships' oil increased from approximately  $9.50 per barrel at December 31,
1998 to approximately $22.75 per barrel at December 31, 1999.



                                      -6-
<PAGE>




      Future  prices  for both oil and gas will  likely  be  different  from the
prices in effect on December 31, 1999.  Management is unable to predict  whether
future oil and gas prices will (i) stabilize, (ii) increase, or (iii) decrease.


      Significant Customers

      The  following  customers  accounted  for  ten  percent  or  more  of  the
Partnerships' oil and gas sales during the year ended December 31, 1999:

   Partnership  Customer                          Percentage
   -----------  --------                          ----------

      I-D       El Paso Energy Marketing
                   Company ("El Paso")              48.4%
                Conoco, Inc.                        18.8%
                Hallwood Petroleum                  11.7%

      I-E       El Paso                             54.6%

      I-F       El Paso                             30.7%
                Amoco Production Co.                11.7%
                Conoco, Inc.                        10.8%

      In  the  event  of  interruption  of  purchases  by  one  or  more  of the
Partnerships'  significant  customers  or the  cessation  or material  change in
availability  of  open  access  transportation  by  the  Partnerships'  pipeline
transporters,  the Partnerships may encounter  difficulty in marketing their gas
and in maintaining historic sales levels.  Management does not expect any of its
open access transporters to seek authorization to terminate their transportation
services.  Even  if the  services  were  terminated,  management  believes  that
alternatives  would  be  available  whereby  the  Partnerships  would be able to
continue to market their gas.

      The  Partnerships'  principal  customers  for  crude  oil  production  are
refiners and other companies  which have pipeline  facilities near the producing
properties  of the  Partnerships.  In the  event  pipeline  facilities  are  not
conveniently  available to  production  areas,  crude oil is usually  trucked by
purchasers to storage facilities.




                                      -7-
<PAGE>



      Oil, Gas, and Environmental Control Regulations

      Regulation  of Production  Operations -- The  production of oil and gas is
subject to  extensive  federal and state laws and  regulations  governing a wide
variety of matters, including the drilling and spacing of wells, allowable rates
of  production,  prevention  of  waste  and  pollution,  and  protection  of the
environment.  In  addition  to the direct  costs  borne in  complying  with such
regulations,  operations and revenues may be impacted to the extent that certain
regulations limit oil and gas production to below economic levels.

      Regulation  of Sales and  Transportation  of Oil and Gas -- Sales of crude
oil and  condensate  are made by the  Partnerships  at market prices and are not
subject to price  controls.  The sale of gas may be subject to both  federal and
state laws and  regulations.  The provisions of these laws and  regulations  are
complex  and  affect  all who  produce,  resell,  transport,  or  purchase  gas,
including the  Partnerships.  Although  virtually all of the  Partnerships'  gas
production  is not subject to price  regulation,  other  regulations  affect the
availability of gas transportation  services and the ability of gas consumers to
continue to purchase or use gas at current levels. Accordingly, such regulations
may have a material  effect on the  Partnerships'  operations and projections of
future oil and gas production and revenues.

      Future  Legislation --  Legislation  affecting the oil and gas industry is
under  constant  review  for  amendment  or  expansion.  Because  such  laws and
regulations  are frequently  amended or  reinterpreted,  management is unable to
predict what  additional  energy  legislation  may be proposed or enacted or the
future cost and impact of complying with existing or future regulations.

      Regulation of the Environment -- The Partnerships'  operations are subject
to numerous laws and  regulations  governing the discharge of materials into the
environment or otherwise relating to environmental  protection.  Compliance with
such  laws  and  regulations,   together  with  any  penalties   resulting  from
noncompliance  may  increase  the cost of the  Partnerships'  operations  or may
affect  the  Partnerships'   ability  to  timely  complete  existing  or  future
activities.  Management  anticipates  that  various  local,  state,  and federal
environmental  control  agencies will have an  increasing  impact on oil and gas
operations.



                                      -8-
<PAGE>




      Insurance Coverage

      The  Partnerships  are  subject  to  all  of  the  risks  inherent  in the
exploration for and production of oil and gas,  including  blowouts,  pollution,
fires, and other casualties.  The Partnerships maintain insurance coverage as is
customary for entities of a similar size engaged in  operations  similar to that
of the  Partnerships,  but losses can occur from uninsurable risks or in amounts
in excess of existing  insurance  coverage.  The occurrence of an event which is
not fully  covered by  insurance  could have a  material  adverse  effect on the
Partnerships' financial condition and results of operations.

ITEM 2.    PROPERTIES

      Well Statistics

      The  following  table  sets forth the  number of  productive  wells of the
Partnerships as of December 31, 1999.


                         Well Statistics(1)
                       As of December 31, 1999


P/ship    Number of Gross Wells(2)        Number of Net Wells(3)
------    -------------------------     --------------------------
             Total    Oil    Gas           Total    Oil     Gas
             -----   -----  -----          -----   -----   -----

I-D           508     403    105            3.35     .69    2.66
I-E           789     640    149           29.17   13.46   15.71
I-F           781     644    137           12.85    5.86    6.99

----------

(1)   The  designation  of a well  as an oil  well  or gas  well  is made by the
      General  Partner based on the relative  amount of oil and gas reserves for
      the well.  Regardless of a well's oil or gas  designation,  it may produce
      oil, gas, or both oil and gas.
(2)   As used in this Annual  Report,  "gross  well" refers to a well in which a
      working interest is owned,  accordingly,  the number of gross wells is the
      total number of wells in which a working interest is owned.
(3)   As  used  in this  Annual  Report,  "net  well"  refers  to the sum of the
      fractional  working  interests  owned in gross wells.  For example,  a 15%
      working interest in a well represents one gross well, but 0.15 net well.




                                      -9-
<PAGE>




      Drilling Activities

      During the year ended  December  31,  1999,  the  Partnerships  indirectly
participated in the drilling of the following wells. The Partnerships do not own
working interests in any of the wells;  therefore,  they did not incur any costs
associated with the drilling activity:

                                            Revenue
P/ship  Well Name            County   St.   Interest Type  Status
------  ---------            ------   ---   -------- ----  ------

 I-D    Flynn No. 1-18       Grady    OK    .00004   Gas   Unknown

 I-E    Flynn No. 1-18       Grady    OK    .00015   Gas   Unknown

 I-F    Flynn No. 1-18       Grady    OK    .00005   Gas   Unknown


      Oil and Gas Production, Revenue, and Price History

      The following tables set forth certain historical  information  concerning
the oil  (including  condensates)  and  gas  production,  net of all  royalties,
overriding  royalties,  and other third party  interests,  of the  Partnerships,
revenues   attributable  to  such   production,   and  certain  price  and  cost
information.  As used in the following tables, direct operating expenses include
lease operating  expenses and production  taxes. In addition,  gas production is
converted to oil equivalents at the rate of six Mcf per barrel, representing the
estimated  relative energy content of gas and oil, which rate is not necessarily
indicative of the relationship of oil and gas prices.  The respective  prices of
oil and gas are  affected  by market and other  factors in  addition to relative
energy content.



                                      -10-
<PAGE>




                         Net Production Data

                           I-D Partnership
                           ---------------

                                    Year Ended December 31,
                              -----------------------------------
                                1999         1998         1997
                              ---------   ----------   ----------
Production:
   Oil (Bbls)                     8,482       11,249       18,760
   Gas (Mcf)                    314,010      456,195      510,113

Oil and gas sales:
   Oil                        $ 118,848  $   141,203   $  355,605
   Gas                          652,470      920,032    1,189,492
                              ---------    ---------    ---------
     Total                    $ 771,318   $1,061,235   $1,545,097
                              =========    =========    =========
Total direct operating
   Expenses                   $ 159,552   $  234,481   $  294,350
                              =========    =========    =========

Direct operating expenses
   as a percentage of oil
   and gas sales                  20.7%        22.1%        19.1%

Average sales price:
   Per barrel of oil             $14.01       $12.55       $18.96
   Per Mcf of gas                  2.08         2.02         2.33

Direct operating expenses
   per equivalent Bbl of
   oil                           $ 2.62       $ 2.69       $ 2.84




                                      -11-
<PAGE>




                         Net Production Data

                           I-E Partnership
                           ---------------

                                      Year Ended December 31,
                                ----------------------------------
                                   1999         1998        1997
                                ----------   ----------  ----------
Production:
   Oil (Bbls)                       58,465       64,346      77,648
   Gas (Mcf)                     1,540,061    2,016,034   2,139,704

Oil and gas sales:
   Oil                          $  972,427   $  770,895  $1,462,528
   Gas                           3,189,103    3,840,340   4,541,724
                                 ---------    ---------   ---------
     Total                      $4,161,530   $4,611,235  $6,004,252
                                 =========    =========   =========
Total direct operating
   Expenses                     $1,153,937   $1,506,844  $1,771,150
                                 =========    =========   =========

Direct operating expenses
   as a percentage of oil
   and gas sales                     27.7%        32.7%       29.5%

Average sales price:
   Per barrel of oil                $16.63       $11.98      $18.84
   Per Mcf of gas                     2.07         1.90        2.12

Direct operating expenses
   per equivalent Bbl of
   oil                              $ 3.66       $ 3.76      $ 4.08




                                      -12-
<PAGE>




                         Net Production Data

                           I-F Partnership
                           ---------------

                                   Year Ended December 31,
                             ------------------------------------
                                1999         1998          1997
                             ----------   ----------    ----------
Production:
   Oil (Bbls)                    27,794       30,203        38,725
   Gas (Mcf)                    381,318      530,040       571,101

Oil and gas sales:
   Oil                       $  463,545   $  365,340    $  730,010
   Gas                          828,532    1,077,378     1,291,795
                              ---------    ---------     ---------
     Total                   $1,292,077   $1,442,718    $2,021,805
                              =========    =========     =========
Total direct operating
   Expenses                  $  425,046   $  668,016    $  683,800
                              =========    =========     =========

Direct operating expenses
   as a percentage of oil
   and gas sales                  32.9%        46.3%         33.8%

Average sales price:
   Per barrel of oil             $16.68       $12.10        $18.85
   Per Mcf of gas                  2.17         2.03          2.26

Direct operating expenses
   per equivalent Bbl of
   oil                           $ 4.65       $ 5.64        $ 5.11


      Proved Reserves and Net Present Value

      The following table sets forth each Partnership's estimated proved oil and
gas reserves  and net present  value  therefrom  as of December  31,  1999.  The
schedule  of  quantities  of proved oil and gas  reserves  was  prepared  by the
General  Partner in accordance  with the rules  prescribed by the Securities and
Exchange  Commission (the "SEC").  Certain  reserve  information was reviewed by
Ryder Scott Company,  L.P. ("Ryder Scott"), an independent petroleum engineering
firm. As used throughout this Annual Report,  "proved  reserves" refers to those
estimated  quantities of crude oil, gas, and gas liquids  which  geological  and
engineering  data  demonstrate  with  reasonable  certainty to be recoverable in
future  years from known oil and gas  reservoirs  under  existing  economic  and
operating conditions.





                                      -13-
<PAGE>





      Net present  value  represents  estimated  future gross cash flow from the
production and sale of proved reserves,  net of estimated oil and gas production
costs (including production taxes, ad valorem taxes, and operating expenses) and
estimated  future  development  costs,  discounted at 10% per annum. Net present
value  attributable to the  Partnerships'  proved reserves was calculated on the
basis of current  costs and prices at December  31,  1999.  Such prices were not
escalated  except in  certain  circumstances  where  escalations  were fixed and
readily  determinable  in accordance with applicable  contract  provisions.  The
relatively  high oil prices at December  31, 1999 have caused the  estimates  of
remaining economically  recoverable oil reserves, as well as the value placed on
said reserves,  to be  significantly  higher than in the past several years. Any
decrease in these high oil prices would result in a  corresponding  reduction in
the estimate of remaining oil reserves.  The prices used in calculating  the net
present  value  attributable  to  the  Partnerships'   proved  reserves  do  not
necessarily  reflect  market  prices for oil and gas  production  subsequent  to
December 31, 1999. There can be no assurance that the prices used in calculating
the net present value of the Partnerships'  proved reserves at December 31, 1999
will actually be realized for such production,  and the General Partner believes
that it is unlikely that oil prices will remain at their current high level.

      The process of  estimating  oil and gas  reserves  is  complex,  requiring
significant  subjective  decisions in the  evaluation  of available  geological,
engineering,  and  economic  data  for  each  reservoir.  The  data  for a given
reservoir may change substantially over time as a result of, among other things,
additional development activity, production history, and viability of production
under varying economic conditions;  consequently, it is reasonably possible that
material  revisions to existing reserve  estimates may occur in the near future.
Although  every  reasonable  effort has been made to ensure  that these  reserve
estimates represent the most accurate assessment  possible,  the significance of
the  subjective  decisions  required and variances in available data for various
reservoirs  make these  estimates  generally  less precise than other  estimates
presented in connection with financial statement disclosures.





                                      -14-
<PAGE>



                         Proved Reserves and
                         Net Present Values
                        From Proved Reserves
                     As of December 31, 1999(1)

I-D Partnership:
---------------
   Estimated proved reserves:
     Gas (Mcf)                                            1,593,815
     Oil and liquids (Bbls)                                 110,189

   Net present value (discounted at 10% per annum)      $ 2,348,651

I-E Partnership:
---------------
   Estimated proved reserves:
     Gas (Mcf)                                            8,291,562
     Oil and liquids (Bbls)                                 727,816

   Net present value (discounted at 10% per annum)      $12,967,095

I-F Partnership:
---------------
   Estimated proved reserves:
     Gas (Mcf)                                            2,770,339
     Oil and liquids (Bbls)                                 351,651

   Net present value (discounted at 10% per annum)      $ 4,595,308
----------

(1)   Includes certain gas balancing adjustments which cause the gas volumes and
      net  present  values to differ from the  reserve  reports  prepared by the
      General Partner and reviewed by Ryder Scott.


      No  estimates of the proved  reserves of the  Partnerships  comparable  to
those included  herein have been included in reports to any federal agency other
than  the SEC.  Additional  information  relating  to the  Partnerships'  proved
reserves  is  contained  in Note 4 to the  Partnerships'  financial  statements,
included in Item 8 of this Annual Report.


      Significant Properties

      The following table sets forth certain well and reserves information as of
December  31, 1999 for the basins in which the  Partnerships  own a  significant
amount of  properties.  The table  contains the following  information  for each
significant  basin:  (i) the number of gross and net  wells,  (ii) the number of
wells in which only a  non-working  interest is owned,  (iii) the  Partnership's
total number of wells,  (iv) the number and  percentage of wells operated by the
Partnership's affiliates, (v)



                                      -15-
<PAGE>



estimated proved oil reserves, (vi) estimated proved gas reserves, and (vii) the
present value (discounted at 10% per annum) of estimated future net cash flow.

      The Anadarko Basin is located in western Oklahoma and the Texas Panhandle,
while the Gulf Coast Basin is located in southern Louisiana and southeast Texas.
The Permian Basin straddles west Texas and southeast New Mexico.


                                      -16-
<PAGE>


<TABLE>

                                Significant Properties as of December 31, 1999
                                ----------------------------------------------
<CAPTION>

                                                             Wells
                                                          Operated by
                                                           Affiliates       Oil         Gas
                      Gross     Net    Other     Total    ------------    Reserves    Reserves     Present
     Basin            Wells    Wells   Wells(1)  Wells    Number   %       (Bbl)       (Mcf)        Value
------------------    ------  -------  ------    ------   ------  ----    --------   ----------   ----------
<S>                   <C>     <C>      <C>       <C>      <C>     <C>     <C>        <C>         <C>
I-D Partnership:
  Anadarko             72      1.88    34        106      20      19%      12,848      913,886   $1,055,249
  Permian             407       .66     1        408       -       -       90,063      451,504      913,861

I-E Partnership:
  Permian             418      4.24     1        419       6       1%     425,003    2,599,222   $5,062,354
  Anadarko             88     10.08    34        122      23      19%      69,274    4,137,537    4,608,506
  Gulf Coast          235      9.87     -        235       -       -      131,579      424,229    1,471,765

I-F Partnership:
  Anadarko             88      4.60    34        122      23      19%      31,129    1,780,427   $1,947,032
  Permian             410      2.01     -        410       6       1%     206,274      190,181    1,044,973
  Gulf Coast          235      3.51     -        235       -       -       46,268      177,653      551,896

---------------------
(1)  Wells in which only a non-working (e.g. royalty) interest is owned.

</TABLE>



                                      -17-
<PAGE>




      Title to Oil and Gas Properties

      Management believes that the Partnerships have satisfactory title to their
oil and gas properties.  Record title to all of the Partnerships'  properties is
held by either the Partnerships or Geodyne Nominee Corporation,  an affiliate of
the General Partner.

      Title to the  Partnerships'  properties  is subject to customary  royalty,
overriding  royalty,   carried,   working,   and  other  similar  interests  and
contractual  arrangements  customary in the oil and gas  industry,  to liens for
current taxes not yet due, and to other  encumbrances.  Management believes that
such burdens do not materially detract from the value of such properties or from
the Partnerships' interest therein or materially interfere with their use in the
operation of the Partnerships' business.


ITEM 3.    LEGAL PROCEEDINGS

      To the knowledge of the General  Partner,  neither the General Partner nor
the Partnerships or their properties are subject to any litigation,  the results
of which  would  have a  material  effect on the  Partnerships'  or the  General
Partner's financial condition or operations.


ITEM 4.    SUBMISSION OF MATTERS TO A VOTE OF LIMITED PARTNERS

      There were no matters  submitted to a vote of the Limited  Partners of any
Partnership during 1999.


                                    PART II.

ITEM 5.    MARKET FOR UNITS AND RELATED LIMITED PARTNER MATTERS

      As  of  February  1,  2000,  the  number  of  Units  outstanding  and  the
approximate  number of Limited  Partners of record in the  Partnerships  were as
follows:

                                           Number of
                            Number of       Limited
             Partnership      Units         Partners
             -----------    ---------     ------------
                 I-D          7,195           720
                 I-E         41,839         2,646
                 I-F         14,321           835


      Units were initially sold for a price of $1,000.  The Units are not traded
on any  exchange  and there is no public  trading  market for them.  The General
Partner is aware of certain transfers of Units between unrelated  parties,  some
of which are




                                      -18-
<PAGE>




facilitated by secondary trading firms and matching  services.  In addition,  as
further  described  below,  the General Partner is aware of certain "4.9% tender
offers" which have been made for the Units.  The General  Partner  believes that
the transfers between unrelated parties have been limited and sporadic in number
and volume. Other than trades facilitated by certain secondary trading firms and
matching  services,  no  organized  trading  market for Units exists and none is
expected  to  develop.  Due to the  nature of these  transactions,  the  General
Partner has no verifiable  information regarding prices at which Units have been
transferred.  Further,  a transferee may not become a substitute Limited Partner
without the consent of the General Partner.

      Pursuant to the terms of the Partnership  Agreements,  the General Partner
is  obligated  to  annually  issue a  repurchase  offer  which  is  based on the
estimated future net revenues from the Partnerships'  reserves and is calculated
pursuant to the terms of the Partnership  Agreements.  Such repurchase  offer is
recalculated  monthly  in order to reflect  cash  distributions  to the  Limited
Partners and  extraordinary  events.  The following table sets forth the General
Partner's repurchase offer per Unit as of the periods indicated.  For purpose of
this Annual Report,  a Unit  represents an initial  subscription  of $1,000 to a
Partnership.


                       Repurchase Offer Prices
                       -----------------------

                   1998                       1999             2000
          ----------------------    ----------------------     ----
          1st   2nd   3rd   4th     1st    2nd   3rd   4th     1st
P/ship    Qtr.  Qtr.  Qtr.  Qtr.    Qtr.   Qtr.  Qtr.  Qtr.    Qtr.
------    ----  ----  ----  ----    ----   ----  ----  ----    ----
 I-D      $122  $193  $157  $122    $104   $ 93  $160  $140    $119
 I-E       134   181   157   137     137    135   151   137     119
 I-F       133   168   152   135     135    135   131   122     108


      The Partnership Agreements also provide for a right of presentment ("Right
of  Presentment")  whereby the General  Partner is required,  upon  request,  to
purchase up to 10% of a Partnership's  outstanding  Units at a price  calculated
pursuant to the terms of the Partnership Agreements and based on the liquidation
value of the limited  partnership  interest,  with a  reduction  for 70% of cash
distributions  that have been received prior to the transfer of the  partnership
interest. The following table sets forth the Right of Presentment price per Unit
as of the periods indicated.





                                      -19-
<PAGE>





                     Right of Presentment Prices
                     ---------------------------

                   1998                      1999              2000
          ----------------------    ----------------------     ----
          1st   2nd   3rd   4th     1st    2nd   3rd   4th     1st
P/ship    Qtr.  Qtr.  Qtr.  Qtr.    Qtr.   Qtr.  Qtr.  Qtr.    Qtr.
------    ----  ----  ----  ----    ----   ----  ----  ----    ----
 I-D      $168  $208  $183  $158    $145   $137  $170  $156    $141
 I-E       156   187   170   156     156    155   156   146     134
 I-F       155   176   165   153     153    153   134   128     119

      In addition to the  repurchase  offer and Right of  Presentment  described
above,  some of the Partnerships  have been subject to "4.9% tender offers" from
several third parties since 1997. The General Partner does not know the terms of
these offers or the prices  received by the Limited  Partners who accepted these
offers.


      Cash Distributions

      Cash  distributions  are primarily  dependent  upon a  Partnership's  cash
receipts from the sale of oil and gas  production and cash  requirements  of the
Partnership.  Distributable cash is determined by the General Partner at the end
of each calendar  quarter and distributed to the Limited Partners within 45 days
after the end of the quarter.  Distributions are restricted to cash on hand less
amounts  required  to be  retained  out of such cash as  determined  in the sole
judgment of the General  Partner to pay costs,  expenses,  or other  Partnership
obligations whether accrued or anticipated to accrue. In certain instances,  the
General  Partner may not distribute the full amount of cash receipts which might
otherwise be available  for  distribution  in an effort to equalize or stabilize
the amounts of quarterly  distributions.  Any available  amounts not distributed
are  invested  and the  interest  or income  thereon is for the  accounts of the
Limited Partners.






                                      -20-
<PAGE>




      The  following  is a summary  of cash  distributions  paid to the  Limited
Partners during 1998 and 1999 and the first quarter of 2000:


                         Cash Distributions
                         ------------------

                             1998
                ------------------------------------
                  1st       2nd       3rd       4th
      P/ship     Qtr.(1)    Qtr.(1)   Qtr.(1)   Qtr.
      ------    --------   -------- --------- ---------

       I-D       $33.22     $47.67   $35.72    $35.44
       I-E        16.92      32.34    24.14     20.58
       I-F        14.66      37.71    16.41     16.69



                             1999                          2000
                ------------------------------------     ---------
                  1st        2nd       3rd      4th        1st
      P/ship     Qtr.        Qtr.      Qtr.     Qtr.       Qtr.
      ------    --------   -------- --------- ---------  ---------

       I-D       $18.07    $11.12    $13.34   $20.01     $21.13
       I-E          -        1.51     26.55    13.65      17.73
       I-F          -         -       18.78     8.80      13.62

--------------------------
(1) Amount of cash  distribution  includes proceeds from the sale of certain oil
and gas properties.



ITEM 6.    SELECTED FINANCIAL DATA

      The following tables present selected financial data for the Partnerships.
This data should be read in  conjunction  with the  financial  statements of the
Partnerships,  and the  respective  notes  thereto,  included  elsewhere in this
Annual Report. See "Item 8. Financial Statements and Supplementary Data."





                                      -21-
<PAGE>




<TABLE>


                                     Selected Financial Data
<CAPTION>

                                        I-D Partnership
                                        ---------------

                                1999           1998          1997          1996           1995
                            ------------   ------------  ------------  ------------   ------------
<S>                          <C>            <C>           <C>           <C>           <C>
Oil and Gas Sales            $  771,318     $1,061,235    $1,545,097    $1,812,568    $1,237,419
Net Income:
  Limited Partners              365,028        762,614       845,470     1,114,924       516,300
  General Partner                77,422        148,669       173,924       219,180       135,487
  Total                         442,450        911,283     1,019,394     1,334,104       651,787
Limited Partners' Net
  Income per Unit                 50.73         105.99        117.51        154.96         71.76
Limited Partners' Cash
  Distributions per
  Unit                            62.54         152.05        155.18        143.86        100.77
Total Assets                    922,668        973,693     1,349,059     1,605,063     1,594,441
Partners' Capital
  (Deficit):
  Limited Partners              874,635        959,607     1,290,993     1,540,523     1,460,599
  General Partner           (    31,152)   (    53,161)  (    27,560)  (     4,248)       17,993
Number of Units
  Outstanding                     7,195          7,195         7,195         7,195         7,195


</TABLE>



                                      -22-
<PAGE>



<TABLE>


                                     Selected Financial Data
<CAPTION>

                                        I-E Partnership
                                        ---------------

                           1999            1998           1997           1996            1995
                       -------------   -------------  -------------  -------------   -------------
<S>                     <C>             <C>            <C>            <C>             <C>
Oil and Gas Sales       $4,161,530      $4,611,235     $6,004,252     $6,006,431      $4,777,881
Net Income:
  Limited Partners       2,061,313       1,929,509      2,342,934      2,660,067         316,558
  General Partner          468,089         548,239        568,504        602,481         368,023
  Total                  2,529,402       2,477,748      2,911,438      3,262,548         684,581
Limited Partners' Net
  Income per Unit            49.27           46.12          56.00          63.58            7.57
Limited Partners' Cash
  Distributions per
  Unit                       41.71           93.98          82.69          68.19           51.15
Total Assets             5,859,238       5,425,656      7,486,793      8,572,514       8,957,340
Partners' Capital
  (Deficit):
  Limited Partners       5,497,285       5,180,972      7,183,463      8,300,529       8,493,462
  General Partner      (   106,782)    (   232,100)   (   228,434)   (   113,140)    (    54,687)
Number of Units
  Outstanding               41,839          41,839         41,839         41,839          41,839

</TABLE>




                                      -23-
<PAGE>



<TABLE>


                                       Selected Financial Data
<CAPTION>

                                           I-F Partnership
                                           ---------------

                                1999           1998          1997          1996           1995
                            ------------   ------------  ------------  ------------   ------------
<S>                          <C>            <C>           <C>           <C>            <C>
Oil and Gas Sales            $1,292,077     $1,442,718    $2,021,805    $2,121,336     $1,762,969
Net Income:
  Limited Partners              771,304        212,910       737,319       883,367         37,379
  General Partner               171,987        140,360       183,677       198,724        117,455
  Total                         943,291        353,270       920,996     1,082,091        154,834
Limited Partners' Net
  Income per Unit                 53.86          14.87         51.49         61.68           2.61
Limited Partners' Cash
  Distributions per
  Unit                            27.58          85.47         81.91         67.10          55.51
Total Assets                  1,990,904      1,858,973     2,566,820     2,982,983      3,124,394
Partners' Capital
  (Deficit):
  Limited Partners            1,775,193      1,398,889     2,409,979     2,845,660      2,923,293
  General Partner           (     9,232)   (    94,547)  (    59,811)  (    59,110)   (    25,679)
Number of Units
  Outstanding                    14,321         14,321        14,321        14,321         14,321

</TABLE>



                                      -24-
<PAGE>




ITEM 7.   MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
          RESULTS OF OPERATIONS

      Use of Forward-Looking Statements and Estimates

      This Annual Report contains certain forward-looking  statements. The words
"anticipate,"  "believe,"  "expect,"  "plan," "intend,"  "estimate,"  "project,"
"could," "may," and similar expressions are intended to identify forward-looking
statements.  Such statements reflect  management's current views with respect to
future  events and  financial  performance.  This Annual  Report  also  includes
certain information which is, or is based upon, estimates and assumptions.  Such
estimates and assumptions  are  management's  efforts to accurately  reflect the
condition and operation of the Partnerships.

      Use of  forward-looking  statements and estimates and assumptions  involve
risks and uncertainties which include, but are not limited to, the volatility of
oil and gas prices, the uncertainty of reserve  information,  the operating risk
associated with oil and gas properties  (including the risk of personal  injury,
death, property damage, damage to the well or producing reservoir, environmental
contamination,  and other  operating  risks),  the  prospect of changing tax and
regulatory laws, the availability and capacity of processing and  transportation
facilities,  the  general  economic  climate,  the  supply  and price of foreign
imports of oil and gas, the level of consumer product demand,  and the price and
availability  of  alternative  fuels.  Should  one or more  of  these  risks  or
uncertainties  occur  or  should  estimates  or  underlying   assumptions  prove
incorrect,  actual  conditions or results may vary materially and adversely from
those stated, anticipated, believed, estimated, or otherwise indicated.

      General Discussion

      The following  general  discussion  should be read in conjunction with the
analysis of results of operations  provided below.  The most important  variable
affecting the Partnerships'  revenues is the prices received for the sale of oil
and gas.  Predicting  future  prices is not  possible.  Concerning  past trends,
average  yearly  wellhead gas prices in the United States have been volatile for
many years.  Over the past ten years such average  prices have generally been in
the $1.40 to $2.40 per Mcf range.  Gas prices are  currently in the upper end of
this range.

      Substantially  all of the Partnerships' gas reserves are being sold on the
"spot  market."  Prices on the spot  market  are  subject to wide  seasonal  and
regional pricing  fluctuations due to the highly  competitive nature of the spot
market. In addition,  such spot market sales are generally  short-term in nature
and are dependent  upon the  obtaining of  transportation  services  provided by
pipelines.  Spot prices for the Partnerships'  gas increased from  approximately
$2.03 per Mcf at December 31, 1998 to




                                      -25-
<PAGE>




approximately  $2.24 per Mcf at December 31, 1999.  Such prices were on an MMBTU
basis and differ from the prices actually  received by the  Partnerships  due to
transportation  and marketing  costs,  BTU  adjustments,  and regional price and
quality differences.

      For the past ten years,  average  oil prices  have  generally  been in the
$16.00 to $24.00 per barrel  range,  but have been  extremely  volatile over the
past two  years.  Due to  global  consumption  and  supply  trends  as well as a
slowdown in Asian energy demand,  oil prices in late 1997 and early 1998 reached
historically low levels,  dropping to as low as approximately  $9.25 per barrel.
However,  production  curtailment  agreements among major oil producing  nations
have  caused  recent  oil  prices  to climb to over  $24.00  per  barrel in some
markets.  It is not known  whether  this  trend  will  continue.  Prices for the
Partnerships' oil increased from approximately  $9.50 per barrel at December 31,
1998 to approximately $22.75 per barrel at December 31, 1999.

      Future  prices  for both oil and gas will  likely  be  different  from the
prices in effect on December 31, 1999.  Management is unable to predict  whether
future oil and gas prices will (i) stabilize, (ii) increase, or (iii) decrease.

      As discussed in the "Results of Operations" section below,  volumes of oil
and gas sold also significantly affect the Partnerships'  revenues.  Oil and gas
wells generally  produce the most oil or gas in the earlier years of their lives
and, as production continues, the rate of production naturally declines. At some
point,   production  physically  ceases  or  becomes  no  longer  economic.  The
Partnerships  are not  acquiring  additional  oil and  gas  properties,  and the
existing  properties  are not  experiencing  significant  additional  production
through drilling or other capital  projects.  Therefore,  volumes of oil and gas
produced  naturally  decline  from  year to  year.  While  it is  difficult  for
management to predict future production from these properties, it is likely that
this general trend of declining production will continue.

      Despite this general trend of declining  production,  several  factors can
cause the volumes of oil and gas sold to increase or decrease at an even greater
rate over a given  period.  These factors  include,  but are not limited to, (i)
geophysical conditions which cause an acceleration of the decline in production,
(ii) the shutting in of wells (or the opening of previously  shut-in  wells) due
to low  oil  and gas  prices,  mechanical  difficulties,  loss  of a  market  or
transportation, or performance of workovers,  recompletions, or other operations
in the well, (iii) prior period volume adjustments (either positive or negative)
made by purchasers of the production,  (iv) ownership  adjustments in accordance
with  agreements  governing  the  operation  or  ownership  of the well (such as
adjustments  that occur at payout),  and (v)  completion  of  enhanced  recovery
projects which



                                      -26-
<PAGE>



increase  production for the well. Many of these factors are very significant as
related to a single  well or as  related  to many  wells over a short  period of
time. However, due to the large number of wells owned by the Partnerships, these
factors  are  generally  not  material  as  compared  to the  normal  decline in
production experienced on all remaining wells.


      Results of Operations

      An  analysis  of the  change  in net oil and gas  operations  (oil and gas
sales,  less lease operating  expenses and production taxes) is presented in the
tables  following  "Results  of  Operations"  under the heading  "Average  Sales
Prices,  Production  Volumes,  and Average  Production  Costs."  Following  is a
discussion  of each  Partnership's  results  of  operations  for the year  ended
December  31, 1999 as compared to the year ended  December  31, 1998 and for the
year ended December 31, 1998 as compared to the year ended December 31, 1997.



                           I-D Partnership
                           ---------------

                Year Ended December 31, 1999 Compared
                   to Year Ended December 31, 1998
                -------------------------------------

      Total oil and gas sales decreased  $289,917 (27.3%) in 1999 as compared to
1998. Of this decrease,  approximately $35,000 and $287,000,  respectively, were
related to decreases in volumes of oil and gas sold. Volumes of oil and gas sold
decreased  2,767 barrels and 142,185 Mcf,  respectively,  in 1999 as compared to
1998.  The  decrease  in volumes  of oil sold was  primarily  due to  production
difficulties on one significant well during 1999. The decrease in volumes of gas
sold was primarily due to (i) production  difficulties on one  significant  well
during 1999, (ii) positive prior period volume adjustments made by the operators
on two  significant  wells during 1998, and (iii) normal declines in production.
Average  oil and gas  prices  increased  to $14.01 per barrel and $2.08 per Mcf,
respectively, in 1999 from $12.55 per barrel and $2.02 per Mcf, respectively, in
1998.

      The I-D  Partnership  sold certain oil and gas properties  during 1999 and
recognized  a $494 gain on such sales.  Sales of oil and gas  properties  during
1998  resulted  in  the  I-D  Partnership  recognizing  similar  gains  totaling
$260,624.

      Oil and gas production  expenses  (including lease operating  expenses and
production  taxes)  decreased  $74,929 (32.0%) in 1999 as compared to 1998. This
decrease was primarily due to (i) a decrease in production taxes associated with
the decrease in oil and gas sales, (ii) a decrease in lease operating expenses



                                      -27-
<PAGE>



associated  with the  decreases  in  volumes  of oil and gas  sold,  and (iii) a
negative prior period lease operating expense adjustment made by the operator on
one  significant  well during 1999. As a percentage of oil and gas sales,  these
expenses decreased to 20.7% in 1999 from 22.1% in 1998.

      Depreciation,  depletion,  and  amortization  of oil  and  gas  properties
decreased  $12,444  (12.7%)  in 1999 as  compared  to 1998.  This  decrease  was
primarily  due to (i) the  decreases  in  volumes  of oil and gas  sold and (ii)
upward  revisions in the estimates of remaining oil and gas reserves at December
31, 1999.  These decreases were partially  offset by one significant  well being
fully  depleted in 1999 due to the lack of  remaining  economically  recoverable
reserves.  As a percentage of oil and gas sales, this expense increased to 11.1%
in 1999 from 9.2% in 1998.  This  percentage  increase was  primarily due to the
depreciation,  depletion, and amortization expense on the well fully depleted in
1999.

      General and administrative  expenses remained  relatively constant in 1999
as  compared  to 1998.  As a  percentage  of oil and gas sales,  these  expenses
increased  to 11.7% in 1999  from 8.5% in 1998.  This  percentage  increase  was
primarily due to the decrease in oil and gas sales.

      The Limited Partners have received cash distributions through December 31,
1999  totaling   $14,458,175  or  200.96%  of  the  Limited   Partners'  capital
contributions.



                Year Ended December 31, 1998 Compared
                   to Year Ended December 31, 1997
                -------------------------------------

      Total oil and gas sales decreased  $483,862 (31.3%) in 1998 as compared to
1997. Of this decrease,  approximately $142,000 and $126,000, respectively, were
related to  decreases in volumes of oil and gas sold and  approximately  $72,000
and $144,000,  respectively,  were related to decreases in the average prices of
oil and gas sold. Volumes of oil and gas sold decreased 7,511 barrels and 53,918
Mcf,  respectively,  in 1998 as compared to 1997. The decrease in volumes of oil
sold resulted  primarily from (i) the sale of several wells during 1997 and 1998
and (ii) normal  declines  in  production.  The  decrease in volumes of gas sold
resulted  primarily  from (i) normal  declines in  production  and (ii) positive
prior period volume  adjustments  made by the purchasers  during 1997 on several
wells.  Average oil and gas prices  decreased to $12.55 per barrel and $2.02 per
Mcf,  respectively,   in  1998  from  $18.96  per  barrel  and  $2.33  per  Mcf,
respectively, in 1997.

      As  discussed  in  "Liquidity  and  Capital   Resources"  below,  the  I-D
Partnership sold certain oil and gas properties in 1998 and



                                      -28-
<PAGE>



recognized a $260,624 gain on such sales. Sales of oil and gas properties during
1997 resulted in the I-D Partnership recognizing similar gains totaling $24,113.

      Oil and gas production  expenses  (including lease operating  expenses and
production  taxes)  decreased  $59,869 (20.3%) in 1998 as compared to 1997. This
decrease  resulted   primarily  from  (i)  workover  expenses  incurred  on  two
significant  wells  during 1997 in order to improve the recovery of reserves and
(ii) a decrease in production  taxes associated with the decrease in oil and gas
sales. As a percentage of oil and gas sales,  these expenses  increased to 22.1%
in 1998 from 19.1% in 1997.  This  percentage  increase was primarily due to the
decreases  in the average  prices of oil and gas sold,  partially  offset by the
1997 workover expenses.

      Depreciation,  depletion,  and  amortization  of oil  and  gas  properties
decreased  $14,888 (13.2%) in 1998 as compared to 1997.  This decrease  resulted
primarily  from the decreases in volumes of oil and gas sold. As a percentage of
oil and gas sales,  this  expense  increased  to 9.2% in 1998 from 7.3% in 1997.
This  percentage  increase  was  primarily  due to the  decreases in the average
prices of oil and gas sold.

      The I-D  Partnership  recognized  a non-cash  charge  against  earnings of
$61,790 in the first quarter of 1997. Of this amount, $12,290 was related to the
decline in oil and gas prices used to determine the recoverability of proved oil
and gas reserves at March 31, 1997 and $49,500 was related to the writing off of
unproved  properties.  These unproved  properties  were written off based on the
General Partner's  determination that it was unlikely that such properties would
be  developed  due  to low  oil  and  gas  prices  and  provisions  in  the  I-D
Partnership's  Partnership  Agreement  which  limit  the  level  of  permissible
drilling activity. No similar charges were necessary in 1998.

      General and  administrative  expenses  decreased  $1,650 (1.8%) in 1998 as
compared to 1997. As a percentage of oil and gas sales, these expenses increased
to 8.5% in 1998 from 5.9% in 1997. This percentage increase was primarily due to
the decrease in oil and gas sales.



                           I-E Partnership
                           ---------------

                Year Ended December 31, 1999 Compared
                   to Year Ended December 31, 1998
                -------------------------------------

      Total oil and gas sales  decreased  $449,705 (9.8%) in 1999 as compared to
1998. Of this decrease,  approximately $70,000 and $907,000,  respectively, were
related to decreases in volumes of



                                      -29-
<PAGE>



oil and gas  sold.  These  decreases  were  partially  offset  by  increases  of
approximately $272,000 and $255,000,  respectively,  related to increases in the
average prices of oil and gas sold.  Volumes of oil and gas sold decreased 5,881
barrels and 475,973 Mcf, respectively, in 1999 as compared to 1998. The decrease
in volumes of gas sold was  primarily  due to (i) positive  prior period  volume
adjustments  made by the purchasers on several wells during 1998 and (ii) normal
declines  in  production.  Average  oil and gas prices  increased  to $16.63 per
barrel and $2.07 per Mcf, respectively, in 1999 from $11.98 per barrel and $1.90
per Mcf, respectively, in 1998.

      The I-E  Partnership  sold certain oil and gas properties  during 1999 and
recognized a $1,587 gain on such sales.  Sales of oil and gas properties  during
1998  resulted  in  the  I-E  Partnership  recognizing  similar  gains  totaling
$1,154,155.

      As  discussed  in  "Liquidity  and  Capital   Resources"  below,  the  I-E
Partnership  recognized an insurance settlement in the amount of $675,000 during
1999. No similar settlements occurred during 1998.

      Oil and gas production  expenses  (including lease operating  expenses and
production  taxes) decreased  $352,907 (23.4%) in 1999 as compared to 1998. This
decrease  was  primarily  due to (i) a  decrease  in  lease  operating  expenses
associated with the decreases in volumes of oil and gas sold, (ii) a decrease in
production  taxes  associated with the decrease in oil and gas sales,  and (iii)
workover  expenses  incurred  on one  significant  well  during 1998 in order to
improve the recovery of reserves.  As a percentage  of oil and gas sales,  these
expenses decreased to 27.7% in 1999 from 32.7% in 1998. This percentage decrease
was primarily due to the increases in the average prices of oil and gas sold.

      Depreciation,  depletion,  and  amortization  of oil  and  gas  properties
decreased  $104,218  (13.8%) in 1999 as  compared  to 1998.  This  decrease  was
primarily  due to the decreases in volumes of oil and gas sold,  which  decrease
was partially offset by several wells being fully depleted in 1999 due to a lack
of remaining  economically  recoverable reserves. As a percentage of oil and gas
sales, this expense decreased to 15.7% in 1999 from 16.4% in 1998.

      The I-E  Partnership  recognized  a non-cash  charge  against  earnings of
$547,048 in the fourth  quarter of 1998.  This charge was  necessary  due to the
unamortized  costs of one field  exceeding  the expected  future cash flows from
that field. No similar charge was necessary in 1999.

      General and administrative  expenses remained  relatively constant in 1999
as  compared  to 1998.  As a  percentage  of oil and gas sales,  these  expenses
increased to 12.5% in 1999 from



                                      -30-
<PAGE>



11.2% in 1998. This percentage increase was primarily due to the decrease in oil
and gas sales.

      The Limited Partners have received cash distributions through December 31,
1999 totaling $55,413,552 or 132.44% of Limited Partners' capital contributions.



                Year Ended December 31, 1998 Compared
                   to Year Ended December 31, 1997
                -------------------------------------

      Total oil and gas sales decreased  $1,393,017  (23.2%) in 1998 as compared
to 1997. Of this decrease,  approximately  $251,000 and $262,000,  respectively,
were related to  decreases in the volumes of oil and gas sold and  approximately
$441,000 and  $439,000,  respectively,  were related to decreases in the average
prices of oil and gas sold. Volumes of oil and gas sold decreased 13,302 barrels
and 123,670  Mcf,  respectively,  in 1998 as compared to 1997.  The  decrease in
volumes of oil sold resulted primarily from (i) the sale of several wells during
1997 and 1998 and (ii) normal declines in production. Average oil and gas prices
decreased  to $11.98 per barrel  and $1.90 per Mcf,  respectively,  in 1998 from
$18.84 per barrel and $2.12 per Mcf, respectively, in 1997.

      As  discussed  in  "Liquidity  and  Capital   Resources"  below,  the  I-E
Partnership  sold  certain  oil and gas  properties  in 1998  and  recognized  a
$1,154,155  gain on such  sales.  Sales of oil and gas  properties  during  1997
resulted in the I-E Partnership recognizing similar gains totaling $120,840.

      Oil and gas production  expenses  (including lease operating  expenses and
production  taxes) decreased  $264,306 (14.9%) in 1998 as compared to 1997. This
decrease  resulted  primarily  from (i) a decrease in lease  operating  expenses
associated with the decreases in volumes of oil and gas sold, (ii) a decrease in
production  taxes  associated with the decrease in oil and gas sales,  and (iii)
workover  expenses incurred on several wells during 1997 in order to improve the
recovery of reserves. These decreases were partially offset by workover expenses
incurred on one  significant  well during 1998.  As a percentage  of oil and gas
sales,  these  expenses  increased  to 32.7% in 1998  from  29.5% in 1997.  This
percentage  increase was primarily due to the decreases in the average prices of
oil and gas sold.

      Depreciation,  depletion,  and  amortization  of oil  and  gas  properties
increased  $27,597  (3.8%) in 1998 as compared to 1997.  This increase  resulted
primarily  from  downward  revisions in the  estimates of remaining  oil and gas
reserves at December 31, 1998 on several  significant  wells, which increase was
partially  offset  by the  decreases  in  volumes  of oil  and  gas  sold.  As a
percentage of oil and gas sales, this expense increased to 16.4% in 1998



                                      -31-
<PAGE>



from 12.1% in 1997. This percentage  increase was primarily due to the decreases
in the average prices of oil and gas sold.

      The I-E  Partnership  recognized  a non-cash  charge  against  earnings of
$547,048 in the fourth  quarter of 1998.  This charge was  necessary  due to the
unamortized  costs of one field  exceeding  the expected  future cash flows from
that field.  During the first quarter of 1997, a non-cash charge of $291,690 was
also recognized.  Of this amount,  $59,728 was related to the decline in oil and
gas prices used to determine the  recoverability  of proved oil and gas reserves
at March 31,  1997 and  $231,962  was  related to the  writing-off  of  unproved
properties.  These  unproved  properties  were  written off based on the General
Partner's  determination  that it was  unlikely  that such  properties  would be
developed due to low oil and gas prices and provisions in the I-E  Partnership's
Partnership Agreement which limit the level of permissible drilling activity.

      General and  administrative  expenses  decreased  $9,384 (1.8%) in 1998 as
compared to 1997. As a percentage of oil and gas sales, these expenses increased
to 11.2% in 1998 from 8.8% in 1997. This  percentage  increase was primarily due
to the decrease in oil and gas sales.


                           I-F Partnership
                           ---------------

                Year Ended December 31, 1999 Compared
                   to Year Ended December 31, 1998
                -------------------------------------


      Total oil and gas sales decreased  $150,641 (10.4%) in 1999 as compared to
1998. Of this decrease,  approximately $29,000 and $302,000,  respectively, were
related  to  decreases  in  volumes of oil and gas sold.  These  decreases  were
partially   offset  by   increases  of   approximately   $127,000  and  $53,000,
respectively,  related to increases  in the average  prices of oil and gas sold.
Volumes  of  oil  and  gas  sold  decreased   2,409  barrels  and  148,722  Mcf,
respectively,  in 1999 as compared to 1998.  The decrease in volumes of gas sold
was primarily due to (i) positive  prior period volume  adjustments  made by the
purchasers on several wells during 1998 and (ii) normal  declines in production.
Average  oil and gas  prices  increased  to $16.68 per barrel and $2.17 per Mcf,
respectively, in 1999 from $12.10 per barrel and $2.03 per Mcf, respectively, in
1998.

      The I-F  Partnership  sold certain oil and gas properties  during 1999 and
recognized  a $546 gain on such sales.  Sales of oil and gas  properties  during
1998  resulted  in  the  I-F  Partnership  recognizing  similar  gains  totaling
$380,920.



                                      -32-
<PAGE>




      As  discussed  in  "Liquidity  and  Capital   Resources"  below,  the  I-F
Partnership  recognized an insurance settlement in the amount of $472,500 during
1999. No similar settlements occurred during 1998.

      Oil and gas production  expenses  (including lease operating  expenses and
production  taxes) decreased  $242,970 (36.4%) in 1999 as compared to 1998. This
decrease  was  primarily  due to (i) a  decrease  in  lease  operating  expenses
associated with the decreases in volumes of oil and gas sold, (ii) a decrease in
production  taxes  associated with the decrease in oil and gas sales,  and (iii)
workover  expenses incurred on several wells during 1998 in order to improve the
recovery of  reserves.  As a  percentage  of oil and gas sales,  these  expenses
decreased  to 32.9% in 1999 from 46.3% in 1998.  This  percentage  decrease  was
primarily due to the increases in the average prices of oil and gas sold and the
1998 workover expenses.

      Depreciation,  depletion,  and  amortization  of oil  and  gas  properties
decreased  $32,683  (12.8%)  in 1999 as  compared  to 1998.  This  decrease  was
primarily  due to the decreases in volumes of oil and gas sold,  which  decrease
was partially offset by several wells being fully depleted in 1999 due to a lack
of remaining  economically  recoverable reserves. As a percentage of oil and gas
sales, this expense decreased to 17.2% in 1999 from 17.7% in 1998.

      The I-F  Partnership  recognized  a non-cash  charge  against  earnings of
$382,925 in the fourth  quarter of 1998.  This charge was  necessary  due to the
unamortized  costs of one field  exceeding  the expected  future cash flows from
that field. No similar charge was necessary in 1999.

      General and administrative  expenses remained  relatively constant in 1999
as  compared  to 1998.  As a  percentage  of oil and gas sales,  these  expenses
increased  to 13.8% in 1999 from 12.3% in 1998.  This  percentage  increase  was
primarily due to the decrease in oil and gas sales.

      The Limited Partners have received cash distributions through December 31,
1999 totaling $18,381,664 or 128.36% of Limited Partners' capital contributions.


                Year Ended December 31, 1998 Compared
                   to Year Ended December 31, 1997
                -------------------------------------

      Total oil and gas sales decreased  $579,087 (28.6%) in 1998 as compared to
1997. Of this decrease,  approximately $161,000 and $93,000, respectively,  were
related to decreases in volumes of oil and gas sold and  approximately  $204,000
and $122,000, respectively, were related to decreases in the average prices of



                                      -33-
<PAGE>



oil and gas sold. Volumes of oil and gas sold decreased 8,522 barrels and 41,061
Mcf,  respectively,  in 1998 as compared to 1997. The decrease in volumes of oil
sold resulted primarily from (i) normal declines in production, (ii) the sale of
several wells during 1997 and 1998, and (iii) the shutting-in of one significant
well during 1998 for repairs. Average oil and gas prices decreased to $12.10 per
barrel and $2.03 per Mcf, respectively, in 1998 from $18.85 per barrel and $2.26
per Mcf, respectively, in 1997.

      As  discussed  in  "Liquidity  and  Capital   Resources"  below,  the  I-F
Partnership  sold  certain  oil and gas  properties  in 1998  and  recognized  a
$380,920  gain on such  sales.  Sales  of oil and  gas  properties  during  1997
resulted in the I-F Partnership recognizing similar gains totaling $76,108.

      Oil and gas production  expenses  (including lease operating  expenses and
production  taxes)  decreased  $15,784 (2.3%) in 1998 as compared to 1997.  This
decrease  resulted  primarily  from (i) a decrease in lease  operating  expenses
associated with the decreases in volumes of oil and gas sold and (ii) a decrease
in production  taxes  associated  with the decrease in oil and gas sales,  which
decreases were partially offset by workover  expenses  incurred on several wells
during 1998 in order to improve the recovery of reserves. As a percentage of oil
and gas sales,  these  expenses  increased  to 46.3% in 1998 from 33.8% in 1997.
This  percentage  increase  was  primarily  due to the  decreases in the average
prices of oil and gas sold.

      Depreciation,  depletion,  and  amortization  of oil  and  gas  properties
decreased  $3,146  (1.2%) in 1998 as compared to 1997.  This  decrease  resulted
primarily from the decreases in volumes of oil and gas sold,  which decrease was
partially offset by downward revisions in the estimates of remaining oil and gas
reserves at December 31, 1998 on several  significant  wells. As a percentage of
oil and gas sales,  this expense  increased to 17.7% in 1998 from 12.8% in 1997.
This  percentage  increase  was  primarily  due to the  decreases in the average
prices of oil and gas sold.

      The I-F  Partnership  recognized  a non-cash  charge  against  earnings of
$382,925 in the fourth  quarter of 1998.  This charge was  necessary  due to the
unamortized  costs of one field  exceeding  the expected  future cash flows from
that field.  During the first quarter of 1997, a non-cash charge of $114,631 was
also recognized.  Of this amount,  $20,908 was related to the decline in oil and
gas prices used to determine the  recoverability  of proved oil and gas reserves
at March 31,  1997 and  $93,723  was  related  to the  writing  off of  unproved
properties.  These  unproved  properties  were  written off based on the General
Partner's  determination  that it was  unlikely  that such  properties  would be
developed due to low oil and gas prices and provisions in the I-F  Partnership's
Partnership Agreement which limit the level of permissible drilling activity.



                                      -34-
<PAGE>



      General and  administrative  expenses  decreased  $3,477 (1.9%) in 1998 as
compared to 1997. As a percentage of oil and gas sales, these expenses increased
to 12.3% in 1998 from 8.9% in 1997. This  percentage  increase was primarily due
to the decrease in oil and gas sales.


      Average Sales Prices, Production Volumes and Average Production Costs

      The following  tables are  comparisons  of the annual  average oil and gas
sales prices,  production volumes, and average production costs (lease operating
expenses and production taxes) per equivalent unit (one barrel of oil or six Mcf
of gas) for 1999, 1998, and 1997.



                                      -35-
<PAGE>




                        1999 Compared to 1998
                        ---------------------

                        Average Sales Prices
----------------------------------------------------------------
P/ship              1999               1998             % Change
------        ----------------    ----------------     ----------
                Oil      Gas        Oil       Gas
              ($/Bbl)  ($/Mcf)    ($/Bbl)   ($/Mcf)    Oil   Gas
              -------  -------    -------   -------    ---  -----

 I-D          $14.01   $2.08      $12.55    $2.02      12%   3%
 I-E           16.63    2.07       11.98     1.90      39%   9%
 I-F           16.68    2.17       12.10     2.03      38%   7%






                         Production Volumes
----------------------------------------------------------------
 P/ship           1999               1998             % Change
--------   ------------------  ------------------   -------------
             Oil       Gas      Oil         Gas      Oil      Gas
           (Bbls)     (Mcf)    (Bbls)      (Mcf)    (Bbls)   (Mcf)
           -------  ---------  -------   ---------  ------   -----

  I-D       8,482     314,010  11,249      456,195  (25%)    (31%)
  I-E      58,465   1,540,061  64,346    2,016,034  ( 9%)    (24%)
  I-F      27,794     381,318  30,203      530,040  ( 8%)    (28%)





                    Average Production Costs per
                      Equivalent Barrel of Oil
                 ---------------------------------
                 P/ship    1999    1998    % Change
                 ------   -----   -----    --------

                  I-D     2.62    $2.69      ( 3%)
                  I-E     3.66     3.76      ( 3%)
                  I-F     4.65     5.64      (18%)






                                      -36-
<PAGE>




                        1998 Compared to 1997
                        ---------------------

                        Average Sales Prices
-----------------------------------------------------------------
P/ship              1998               1997             % Change
------        ----------------    ----------------     ----------
                Oil      Gas        Oil       Gas
              ($/Bbl)  ($/Mcf)    ($/Bbl)   ($/Mcf)    Oil   Gas
              -------  -------    -------   -------    ---  -----

 I-D          $12.55    $2.02     $18.96    $2.33      (34%)(13%)
 I-E           11.98     1.90      18.84     2.12      (36%)(10%)
 I-F           12.10     2.03      18.85     2.26      (36%)(10%)




                         Production Volumes
-----------------------------------------------------------------
 P/ship           1998               1997             % Change
--------   ------------------  ------------------   -------------
             Oil       Gas      Oil         Gas      Oil      Gas
           (Bbls)     (Mcf)    (Bbls)      (Mcf)    (Bbls)   (Mcf)
           -------  ---------  -------   ---------  ------   -----

  I-D      11,249     456,195  18,760      510,113  (40%)    (11%)
  I-E      64,346   2,016,034  77,648    2,139,704  (17%)    ( 6%)
  I-F      30,203     530,040  38,725      571,101  (22%)    ( 7%)




                    Average Production Costs per
                      Equivalent Barrel of Oil
                 ---------------------------------
                 P/ship    1998    1997    % Change
                 ------   -----   -----    --------

                  I-D     $2.69   $2.84     ( 5%)
                  I-E      3.76    4.08     ( 8%)
                  I-F      5.64    5.11      10%

      Liquidity and Capital Resources

      Net  proceeds  from  operations  less  necessary   operating  capital  are
distributed to the Limited  Partners on a quarterly  basis.  See "Item 5. Market
for Units and Related Limited Partner Matters." The net proceeds from production
are not  reinvested in productive  assets,  except to the extent that  producing
wells are  improved,  or where  methods are  employed  to permit more  efficient
recovery of reserves,  thereby resulting in a positive economic impact. Assuming
1999 production levels for future years, the



                                      -37-
<PAGE>



Partnerships'  proved  reserve  quantities  at December  31, 1999 would have the
following remaining lives:


                Partnership    Gas-Years    Oil-Years
                -----------    ---------    ---------

                    I-D          5.1           13.0
                    I-E          5.4           12.4
                    I-F          7.3           12.7

These life of reserves estimates are based on the current estimates of remaining
oil and gas reserves. See "Item 2. Properties" for a discussion of these reserve
estimates.  In particular,  the relatively  high oil prices at December 31, 1999
have  caused an  increase in the  estimates  of  remaining  oil  reserves  which
therefore have increased the estimated life of said reserves.

      The   Partnerships'   available   capital   from  the  Limited   Partners'
subscriptions  has been spent on oil and gas  properties  and there should be no
further material capital resource commitments for any of the Partnerships in the
future.  Occasional  expenditures  by the  Partnerships  for new  wells  or well
completions or workovers,  however, may reduce or eliminate cash available for a
particular   quarterly  cash   distribution.   The  Partnerships  have  no  debt
commitments.  Cash for operational  purposes will be provided by current oil and
gas production.

      The  Partnerships  sold certain oil and gas properties  during 1999, 1998,
and  1997.  The sale of the  Partnerships'  properties  was made by the  General
Partner after giving due  consideration  to both the offer price and the General
Partner's  estimate  of the  property's  remaining  proved  reserves  and future
operating costs. Net proceeds from the sale of any such properties were included
in the  calculation  of the  Partnerships'  cash  distributions  for the quarter
immediately following the Partnerships'  receipt of the proceeds.  The amount of
such proceeds from the sale of oil and gas  properties  during 1999,  1998,  and
1997 were as follows:


           Partnership     1999        1998        1997
           -----------    ------    ----------   --------

               I-D        $  494    $  272,824   $ 25,350
               I-E         2,695     1,265,357    156,744
               I-F         2,732       438,200     97,288

      The General  Partner  believes that the sale of these  properties  will be
beneficial  to the  Partnerships  in the  long-term  since the  properties  sold
generally  had a higher  ratio of  future  operating  expenses  as  compared  to
reserves than the properties not sold.





                                      -38-
<PAGE>




      In August 1999, the I-E and I-F Partnerships received insurance settlement
proceeds in the amounts of $675,000 and  $472,500,  respectively,  for the costs
incurred  to drill  the  State  Lease  8191 No.  4 well in St.  Bernard  Parish,
Louisiana for the purpose of relieving pressure in another well which suffered a
blowout  during a workover  attempt.  This new well was completed as a producing
gas  well  in  1998.  The  insurance  proceeds  amounts  were  included  in  the
Partnerships' August 1999 cash distribution.

      There can be no  assurance  as to the amount of the  Partnerships'  future
cash distributions. The Partnerships' ability to make cash distributions depends
primarily upon the level of available  cash flow generated by the  Partnerships'
operating  activities,  which will be affected (either positively or negatively)
by many factors beyond the control of the  Partnerships,  including the price of
and demand for oil and gas and other  market and  economic  conditions.  Even if
prices and costs remain stable,  the amount of cash available for  distributions
will decline over time (as the volume of production  from  producing  properties
declines)  since  the   Partnerships  are  not  replacing   production   through
acquisitions of producing properties and drilling. The Partnerships' quantity of
proved  reserves  has  been  reduced  by the sale of oil and gas  properties  as
described above;  therefore,  it is possible that the Partnerships'  future cash
distributions  will  decline  as a result of a  reduction  of the  Partnerships'
reserve base.

      Pursuant  to the terms of the  Partnership  Agreements,  the  Partnerships
would have terminated on December 31, 1999. However, the Partnership  Agreements
provide that the General Partner may extend the term of each  Partnership for up
to five periods of two years each. The General Partner has extended the terms of
the Partnerships for the first two year extension period to December 31, 2001.


      Inflation and Changing Prices

      Prices obtained for oil and gas production  depend upon numerous  factors,
including the extent of domestic and foreign production, foreign imports of oil,
market  demand,  domestic  and  foreign  economic  conditions  in  general,  and
governmental  regulations  and tax laws.  The general  level of inflation in the
economy did not have a material effect on the operations of the  Partnerships in
1999. Oil and gas prices have fluctuated  during recent years and generally have
not followed the same pattern as  inflation.  See "Item 2.  Properties - Oil and
Gas Production, Revenue, and Price History."




                                      -39-
<PAGE>




      Year 2000

      The year  2000  issue  refers  to the  inability  of  computer  and  other
information  technology  systems to properly process date and time  information,
stemming from the earlier  programming  practice of using two digits rather than
four to represent the year in a date.  To the knowledge of the General  Partner,
the  Partnerships  have not experienced any material  effects from the year 2000
issue.  Costs  incurred  by the  Partnerships  in  order  to  ensure  year  2000
compatibility were not material to the Partnerships.

ITEM 7A.   QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK.

      The Partnerships do not hold any market risk sensitive instruments.

ITEM 8.    FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

      The financial  statements  and  supplementary  data are indexed in Item 14
hereof.

ITEM 9.    CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
           FINANCIAL DISCLOSURE

      None.


                                   PART III.

ITEM 10.   DIRECTORS AND EXECUTIVE OFFICERS OF THE GENERAL PARTNER

      The Partnerships  have no directors or executive  officers.  The following
individuals  are directors and executive  officers of the General  Partner.  The
business  address of such  director  and  executive  officers is Two West Second
Street, Tulsa, Oklahoma 74103.

            Name          Age   Position with Geodyne
      ----------------    ---   --------------------------------
      Dennis R. Neill      47   President and Director

      Judy K. Fox          48   Secretary

The director will hold office until the next annual meeting of  shareholders  of
Geodyne  or until  his  successor  has been  duly  elected  and  qualified.  All
executive officers serve at the discretion of the Board of Directors.

      Dennis R. Neill joined Samson in 1981, was named Senior Vice President and
Director of Geodyne on March 3, 1993, and was named



                                      -40-
<PAGE>



President of Geodyne and its  subsidiaries  on June 30,  1996.  Prior to joining
Samson, he was associated with a Tulsa law firm,  Conner and Winters,  where his
principal  practice was in the  securities  area. He received a Bachelor of Arts
degree in political science from Oklahoma State University and a Juris Doctorate
degree  from the  University  of Texas.  Mr.  Neill also  serves as Senior  Vice
President of Samson  Investment  Company and as President and Director of Samson
Properties   Incorporated,   Samson   Hydrocarbons   Company,   Dyco   Petroleum
Corporation,  Berry Gas Company,  Circle L Drilling Company,  Snyder Exploration
Company, and Compression, Inc.

      Judy K. Fox joined  Samson in 1990 and was named  Secretary of Geodyne and
its  subsidiaries on June 30, 1996.  Prior to joining Samson,  she served as Gas
Contract Manager for Ely Energy Company.  Ms. Fox is also Secretary of Berry Gas
Company,   Circle  L  Drilling  Company,   Compression,   Inc.,  Dyco  Petroleum
Corporation, Samson Hydrocarbons Company, Snyder Exploration Company, and Samson
Properties Incorporated.

      Section 16(a) Beneficial Ownership Reporting Compliance

      To the knowledge of the Partnerships  and the General Partner,  there were
no officers,  directors, or ten percent owners who were delinquent filers during
1999 of reports  required  under  Section 16 of the  Securities  Exchange Act of
1934.


ITEM 11.   EXECUTIVE COMPENSATION

      The General  Partner and its  affiliates are reimbursed for actual general
and  administrative  costs and operating costs incurred and  attributable to the
conduct of the business affairs and operations of the Partnerships,  computed on
a cost basis,  determined  in  accordance  with  generally  accepted  accounting
principles.  Such reimbursed  costs and expenses  allocated to the  Partnerships
include office rent, secretarial, employee compensation and benefits, travel and
communication costs, fees for professional  services,  and other items generally
classified  as general or  administrative  expense.  When actual costs  incurred
benefit other  Partnerships and affiliates,  the allocation of costs is based on
the  relationship of the  Partnerships'  reserves to the total reserves owned by
all  Partnerships  and  affiliates.  The  amount of general  and  administrative
expense allocated to the General Partner and its affiliates which was charged to
each  Partnership  for 1999,  1998,  and 1997 is set  forth in the table  below.
Although the actual  costs  incurred by the General  Partner and its  affiliates
have  fluctuated  during the three years  presented,  the amount  charged to the
Partnerships have not fluctuated every year due to expense  limitations  imposed
by the Partnership Agreements.





                                      -41-
<PAGE>




           Partnership      1999        1998       1997
           -----------    --------    --------   --------
               I-D        $ 79,944    $ 79,944   $ 79,944
               I-E         464,880     464,880    464,880
               I-F         159,120     159,120    159,120

      None  of  the  officers  or  directors  of  the  General  Partner  receive
compensation  directly from the  Partnerships.  The  Partnerships  reimburse the
General  Partner  or its  affiliates  for that  portion  of such  officers'  and
directors'   salaries  and  expenses   attributable  to  time  devoted  by  such
individuals  to the  Partnerships'  activities  based on the  allocation  method
described above. The following tables indicate the approximate amount of general
and  administrative  expense  reimbursement  attributable to the salaries of the
directors,  officers,  and employees of the General  Partner and its  affiliates
during 1999, 1998, and 1997:



                                      -42-
<PAGE>



<TABLE>

                              Salary Reimbursement
                                 I-D Partnership
                                 ---------------
                       Three Years Ended December 31, 1999
<CAPTION>

                                                             Long Term Compensation
                                                        --------------------------------
                             Annual Compensation               Awards           Payouts
                          --------------------------    ---------------------   -------
                                                                     Securi-
                                              Other                   ties                  All
     Name                                     Annual   Restricted    Under-                Other
      and                                    Compen-     Stock       lying       LTIP     Compen-
   Principal              Salary     Bonus   sation     Award(s)    Options/    Payouts   sation
   Position        Year     ($)       ($)      ($)        ($)        SARs(#)      ($)       ($)
---------------    ----   -------   -------  -------   ----------   --------    -------   -------
<S>                <C>     <C>      <C>        <C>       <C>          <C>         <C>       <C>
Dennis R. Neill,
President(1)       1997     -         -        -         -            -           -         -
                   1998     -         -        -         -            -           -         -
                   1999     -         -        -         -            -           -         -
All Executive
Officers,
Directors,
and Employees
as a group(2)      1997   $47,759     -        -         -            -           -         -
                   1998   $47,311     -        -         -            -           -         -
                   1999   $48,830     -        -         -            -           -         -

----------
(1)   The general and  administrative  expenses paid by the I-D  Partnership and
      attributable to salary  reimbursements  do not include any salary or other
      compensation attributable to Mr. Neill.
(2)   No officer or director  of Geodyne or its  affiliates  provides  full-time
      services  to the I-D  Partnership  and no  individual's  salary  or  other
      compensation  reimbursement  from the I-D  Partnership  equals or  exceeds
      $100,000 per annum.
</TABLE>



                                      -43-
<PAGE>

<TABLE>

                              Salary Reimbursement
                                 I-E Partnership
                                 ---------------
                       Three Years Ended December 31, 1999
<CAPTION>

                                                             Long Term Compensation
                                                        -------------------------------
                             Annual Compensation               Awards           Payouts
                          --------------------------    ---------------------   -------
                                                                     Securi-
                                              Other                   ties                  All
     Name                                     Annual   Restricted    Under-                Other
      and                                    Compen-     Stock       lying       LTIP     Compen-
   Principal              Salary     Bonus   sation     Award(s)    Options/    Payouts   sation
   Position        Year     ($)       ($)      ($)        ($)        SARs(#)      ($)       ($)
---------------    ----   -------   -------  -------   ----------   --------    -------   -------
<S>                <C>    <C>         <C>      <C>       <C>          <C>         <C>       <C>
Dennis R. Neill,
President(1)       1997      -        -        -         -            -           -         -
                   1998      -        -        -         -            -           -         -
                   1999      -        -        -         -            -           -         -
All Executive
Officers,
Directors,
and Employees
as a group(2)      1997   $277,719    -        -         -            -           -         -
                   1998   $275,116    -        -         -            -           -         -
                   1999   $283,949    -        -         -            -           -         -
----------
(1)   The general and  administrative  expenses paid by the I-E  Partnership and
      attributable to salary  reimbursements  do not include any salary or other
      compensation attributable to Mr. Neill.
(2)   No officer or director  of Geodyne or its  affiliates  provides  full-time
      services  to the I-E  Partnership  and no  individual's  salary  or  other
      compensation  reimbursement  from the I-E  Partnership  equals or  exceeds
      $100,000 per annum.

</TABLE>



                                      -44-
<PAGE>




<TABLE>

                              Salary Reimbursement
                                 I-F Partnership
                                 ---------------
                       Three Years Ended December 31, 1999
<CAPTION>

                                                             Long Term Compensation
                                                        --------------------------------
                             Annual Compensation               Awards           Payouts
                          --------------------------    ---------------------   -------
                                                                     Securi-
                                              Other                   ties                  All
     Name                                     Annual   Restricted    Under-                Other
      and                                    Compen-     Stock       lying       LTIP     Compen-
   Principal              Salary     Bonus   sation     Award(s)    Options/    Payouts   sation
   Position        Year     ($)       ($)      ($)        ($)        SARs(#)      ($)       ($)
---------------    ----   -------   -------  -------   ----------   --------    -------   -------
<S>                <C>    <C>       <C>        <C>       <C>          <C>         <C>       <C>
Dennis R. Neill,
President(1)       1997     -         -        -         -            -           -         -
                   1998     -         -        -         -            -           -         -
                   1999     -         -        -         -            -           -         -

All Executive
Officers,
Directors,
and Employees
as a group(2)      1997   $95,058     -        -         -            -           -         -
                   1998   $94,167     -        -         -            -           -         -
                   1999   $97,190     -        -         -            -           -         -
----------
(1)   The general and  administrative  expenses paid by the I-F  Partnership and
      attributable to salary  reimbursements  do not include any salary or other
      compensation attributable to Mr. Neill.
(2)   No officer or director  of Geodyne or its  affiliates  provides  full-time
      services  to the I-F  Partnership  and no  individual's  salary  or  other
      compensation  reimbursement  from the I-F  Partnership  equals or  exceeds
      $100,000 per annum.

</TABLE>



                                      -45-
<PAGE>





      Affiliates  of  the  Partnerships   serve  as  operator  of  some  of  the
Partnerships'  wells.  The General  Partner  contracts with such  affiliates for
services as operator of the wells. As operator,  such affiliates are compensated
at rates  provided  in the  operating  agreements  in effect and  charged to all
parties to such agreement. Such compensation may occur both prior and subsequent
to the  commencement  of  commercial  marketing of production of oil or gas. The
dollar amount of such compensation paid by the Partnerships to the affiliates is
impossible to quantify as of the date of this Annual Report.

      Samson  maintains  necessary  inventories of new and used field equipment.
Samson  may  have  provided  some of this  equipment  for  wells  in  which  the
Partnerships  have an interest.  This  equipment was provided at prices or rates
equal  to or  less  than  those  normally  charged  in the  same  or  comparable
geographic  area by unaffiliated  persons or companies  dealing at arm's length.
The operators of these wells billed the Partnerships for a portion of such costs
based upon the Partnerships' interest in the well.

ITEM 12.   SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

      The following table provides information as to the beneficial ownership of
the Units as of February 1, 2000 by (i) each beneficial  owner of more than five
percent of the issued and outstanding  Units, (ii) the directors and officers of
the General  Partner,  and (iii) the General  Partner  and its  affiliates.  The
address of each of such persons is Samson Plaza, Two West Second Street,  Tulsa,
Oklahoma 74103.


                                              Number of Units
                                               Beneficially
                                              Owned (Percent
          Beneficial Owner                    of Outstanding)
------------------------------------         ------------------

I-D Partnership:
---------------
  Samson Resources Company                   1,077     (15.0%)

  All affiliates, directors,
   and officers of the General
   Partner as a group and
   the General Partner (4 persons)           1,077     (15.0%)

I-E Partnership:
---------------
  Samson Resources Company                   8,334     (19.9%)




                                      -46-
<PAGE>




  All affiliates, directors,
   and officers of the General
   Partner as a group and
   the General Partner (4 persons)           8,334     (19.9%)

I-F Partnership:
---------------
  Samson Resources Company                   3,391     (23.7%)

  All affiliates, directors,
   and officers of the General
   Partner as a group and
   the General Partner (4 persons)           3,391     (23.7%)



ITEM 13.   CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

      The General  Partner and certain of its  affiliates  engage in oil and gas
activities  independently  of the  Partnerships  which  result in  conflicts  of
interest that cannot be totally  eliminated.  The allocation of acquisition  and
drilling  opportunities and the nature of the compensation  arrangements between
the  Partnerships  and the General  Partner also create  potential  conflicts of
interest.  An affiliate of the Partnerships owns some of the Partnerships' Units
and  therefore  has an identity of interest  with other  Limited  Partners  with
respect to the operations of the Partnerships.

      In order to attempt to assure  limited  liability for Limited  Partners as
well as an orderly  conduct  of  business,  management  of the  Partnerships  is
exercised  solely by the General Partner.  The Partnership  Agreements grant the
General Partner broad discretionary  authority with respect to the Partnerships'
participation  in  drilling  prospects  and  expenditure  and  control of funds,
including  borrowings.  These  provisions  are  similar  to those  contained  in
prospectuses   and   partnership   agreements  for  other  public  oil  and  gas
partnerships.  Broad  discretion as to general  management  of the  Partnerships
involves  circumstances  where the General Partner has conflicts of interest and
where  it  must  allocate  costs  and  expenses,  or  opportunities,  among  the
Partnerships and other competing interests.

      The  General  Partner  does  not  devote  all of its  time,  efforts,  and
personnel exclusively to the Partnerships.  Furthermore, the Partnerships do not
have  any  employees,   but  instead  rely  on  the  personnel  of  Samson.  The
Partnerships thus compete with Samson (including other oil and gas partnerships)
for the time and  resources  of such  personnel.  Samson  devotes  such time and
personnel  to  the  management  of the  Partnerships  as  are  indicated  by the
circumstances and as are consistent with the General Partner's fiduciary duties.



                                      -47-
<PAGE>




      Affiliates of the Partnerships are solely responsible for the negotiation,
administration,  and  enforcement of oil and gas sales  agreements  covering the
Partnerships'  leasehold  interests.  Because affiliates of the Partnerships who
provide  services to the  Partnerships  have  fiduciary or other duties to other
members of Samson,  contract amendments and negotiating  positions taken by them
in their  effort  to  enforce  contracts  with  purchasers  may not  necessarily
represent  the  positions  that  the  Partnerships  would  take if they  were to
administer their own contracts without involvement with other members of Samson.
On the  other  hand,  management  believes  that the  Partnerships'  negotiating
strength  and  contractual  positions  have  been  enhanced  by  virtue of their
affiliation with Samson.





                                      -48-
<PAGE>



                                    PART IV.

ITEM 14.   EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

      (a)  Financial Statements, Financial Statement Schedules, and Exhibits.

           (1)  Financial Statements: The following financial statements for the

                     Geodyne Energy Income Limited Partnership I-D
                     Geodyne Energy Income Limited Partnership I-E
                     Geodyne Energy Income Limited Partnership I-F

                as of December 31, 1999 and 1998 and for each of the three years
                in the period ended  December 31, 1999 are filed as part of this
                report:

                     Report of Independent Accountants
                     Combined Balance Sheets
                     Combined Statements of Operations
                     Combined Statements of Changes in
                          Partners' Capital (Deficit)
                     Combined Statements of Cash Flows
                     Notes to Combined Financial Statements

           (2)  Financial Statement Schedules:

                None.

           (3)  Exhibits:

            *     4.1 Amended and Restated  Agreement and Certificate of Limited
                  Partnership  dated  March 4, 1986 for  Geodyne  Energy  Income
                  Limited Partnership I-D.

            *     4.2 Amended and Restated  Agreement and Certificate of Limited
                  Partnership dated September 10, 1986 for Geodyne Energy Income
                  Limited Partnership I-E.

            *     4.3 Amended and Restated  Agreement and Certificate of Limited
                  Partnership  dated December 17, 1986 for Geodyne Energy Income
                  Limited Partnership I-F.

            *     4.4 First  Amendment  to Amended and Restated  Certificate  of
                  Limited   Partnership  and  First  Amendment  to  Amended  and
                  Restated  Agreement  and  Certificate  of Limited  Partnership
                  dated  February  24, 1993 for Geodyne  Energy  Income  Limited
                  Partnership I-D.



                                      -49-
<PAGE>




            *     4.5 First  Amendment  to Amended and Restated  Certificate  of
                  Limited   Partnership  and  First  Amendment  to  Amended  and
                  Restated  Agreement  and  Certificate  of Limited  Partnership
                  dated  February  24, 1993 for Geodyne  Energy  Income  Limited
                  Partnership I-E.

            *     4.6 First  Amendment  to Amended and Restated  Certificate  of
                  Limited   Partnership  and  First  Amendment  to  Amended  and
                  Restated  Agreement  and  Certificate  of Limited  Partnership
                  dated  February  24, 1993 for Geodyne  Energy  Income  Limited
                  Partnership I-F.

            *     4.7 Second  Amendment  to Amended and Restated  Agreement  and
                  Certificate  of Limited  Partnership  dated August 4, 1993 for
                  Geodyne Energy Income Limited Partnership I-D.

            *     4.8 Second  Amendment  to Amended and Restated  Agreement  and
                  Certificate  of Limited  Partnership  dated August 4, 1993 for
                  Geodyne Energy Income Limited Partnership I-E.

            *     4.9 Second  Amendment  to Amended and Restated  Agreement  and
                  Certificate  of Limited  Partnership  dated August 4, 1993 for
                  Geodyne Energy Income Limited Partnership I-F.

            *     4.10 Third  Amendment  to Amended and Restated  Agreement  and
                  Certificate  of  Limited  Partnership  dated  July 1, 1996 for
                  Geodyne Energy Income Limited Partnership I-D.

            *     4.11 Third  Amendment  to Amended and Restated  Agreement  and
                  Certificate  of  Limited  Partnership  dated  July 1, 1996 for
                  Geodyne Energy Income Limited Partnership I-E.

            *     4.12 Third  Amendment  to Amended and Restated  Agreement  and
                  Certificate  of  Limited  Partnership  dated  July 1, 1996 for
                  Geodyne Energy Income Limited Partnership I-F.

            *     4.13 Fourth  Amendment to Amended and Restated  Agreement  and
                  Certificate of Limited Partnership dated December 23, 1999 for
                  Geodyne Energy Income Limited Partnership I-D.



                                      -50-
<PAGE>




            *     4.14 Fourth  Amendment to Amended and Restated  Agreement  and
                  Certificate of Limited Partnership dated December 23, 1999 for
                  Geodyne Energy Income Limited Partnership I-E.

            *     4.15 Fourth  Amendment to Amended and Restated  Agreement  and
                  Certificate of Limited Partnership dated December 23, 1999 for
                  Geodyne Energy Income Limited Partnership I-F.

            *     10.1 Amended and Restated Agreement of Partnership dated March
                  4, 1986 for Geodyne Energy Income Production Partnership I-D.

            *     10.2  Amended and  Restated  Agreement  of  Partnership  dated
                  September  10,  1986  for  Geodyne  Energy  Income  Production
                  Partnership I-E.

            *     10.3  Amended and  Restated  Agreement  of  Partnership  dated
                  December  17,  1986  for  Geodyne  Energy  Income   Production
                  Partnership I-F.

            *     10.4 First  Amendment  to Amended and  Restated  Agreement  of
                  Partnership  dated February 26, 1993 for Geodyne Energy Income
                  Production Partnership I-D.

            *     10.5 First  Amendment  to Amended and  Restated  Agreement  of
                  Partnership  dated February 26, 1993 for Geodyne Energy Income
                  Production Partnership I-E.

            *     10.6 First  Amendment  to Amended and  Restated  Agreement  of
                  Partnership  dated February 26, 1993 for Geodyne Energy Income
                  Production Partnership I-F.

            *     10.7 Second  Amendment  to Amended and  Restated  Agreement of
                  Partnership  dated  July 1,  1996 for  Geodyne  Energy  Income
                  Production Partnership I-D.

            *     10.8 Second  Amendment  to Amended and  Restated  Agreement of
                  Partnership  dated  July 1,  1996 for  Geodyne  Energy  Income
                  Production Partnership I-E.

            *     10.9 Second  Amendment  to Amended and  Restated  Agreement of
                  Partnership  dated  July 1,  1996 for  Geodyne  Energy  Income
                  Production Partnership I-F.




                                      -51-
<PAGE>





            *     10.10 Third  Amendment  to Amended and  Restated  Agreement of
                  Partnership  dated December 30, 1999 for Geodyne Energy Income
                  Production Partnership I-D.

            *     10.11 Third  Amendment  to Amended and  Restated  Agreement of
                  Partnership  dated December 30, 1999 for Geodyne Energy Income
                  Production Partnership I-E.

            *     10.12 Third  Amendment  to Amended and  Restated  Agreement of
                  Partnership  dated December 30, 1999 for Geodyne Energy Income
                  Production Partnership I-F.

            *     23.1 Consent of Ryder Scott  Company,  L.P. for Geodyne Energy
                  Income Limited Partnership I-D.

            *     23.2 Consent of Ryder Scott  Company,  L.P. for Geodyne Energy
                  Income Limited Partnership I-E.

            *     23.3 Consent of Ryder Scott  Company,  L.P. for Geodyne Energy
                  Income Limited Partnership I-F.

            *     27.1  Financial  Data Schedule  containing  summary  financial
                  information  extracted  from  Geodyne  Energy  Income  Limited
                  Partnership I-D's financial statements as of December 31, 1999
                  and for the year ended December 31, 1999.

            *     27.2  Financial  Data Schedule  containing  summary  financial
                  information  extracted  from  Geodyne  Energy  Income  Limited
                  Partnership I-E's financial statements as of December 31, 1999
                  and for the year ended December 31, 1999.

            *     27.3  Financial  Data Schedule  containing  summary  financial
                  information  extracted  from  Geodyne  Energy  Income  Limited
                  Partnership I-F's financial statements as of December 31, 1999
                  and for the year ended December 31, 1999.

                All other Exhibits are omitted as inapplicable.

                ----------------------

                *Filed herewith.





                                      -52-
<PAGE>





      (b)  Reports on Form 8-K filed during the fourth quarter of 1999:

                None.





                                      -53-
<PAGE>



                                   SIGNATURES

Pursuant to the requirements of Sections 13 or 15(d) of the Securities  Exchange
Act of 1934,  the  registrant  has duly  caused  this report to be signed on its
behalf by the undersigned, thereunto duly organized.


                               GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
                               GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
                               GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F

                               By:  GEODYNE RESOURCES, INC.
                                    General Partner


                                    February  24, 2000

                               By:  /s/Dennis R. Neill
                                    ------------------------------
                                       Dennis R. Neill
                                       President

Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following  persons on behalf of the  registrant and
in the capacities on the dates indicated.

By:   /s/Dennis R. Neill   President and         February 24, 2000
      -------------------  Director (Principal
         Dennis R. Neill   Executive Officer)

      /s/Patrick M. Hall   (Principal            February 24, 2000
      -------------------  Financial and
         Patrick M. Hall   Accounting Officer)

      /s/Judy K. Fox       Secretary             February 24, 2000
      -------------------
         Judy K. Fox



                                      -54-
<PAGE>


ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

                  REPORT OF INDEPENDENT ACCOUNTANTS

TO THE PARTNERS

GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
GEODYNE PRODUCTION PARTNERSHIP I-D

      In our opinion,  the accompanying  combined balance sheets and the related
combined  statements of operations,  changes in partners'  capital (deficit) and
cash flows present  fairly,  in all material  respects,  the combined  financial
position of the  Geodyne  Energy  Income  Limited  Partnership  I-D, an Oklahoma
limited partnership, and Geodyne Production Partnership I-D, an Oklahoma general
partnership,  at December 31, 1999 and 1998,  and the combined  results of their
operations  and their cash flows for each of the three years in the period ended
December 31, 1999, in conformity with accounting  principles  generally accepted
in the United States.  These financial  statements are the responsibility of the
Partnerships'  management;  our responsibility is to express an opinion on these
financial  statements  based on our  audits.  We  conducted  our audits of these
financial statements in accordance with auditing standards generally accepted in
the United  States,  which  require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the  amounts  and  disclosures  in  the  financial  statements,   assessing  the
accounting  principles  used and significant  estimates made by management,  and
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for the opinion expressed above.









                               PricewaterhouseCoopers LLP


Tulsa, Oklahoma
February 18, 2000




                                      F-1
<PAGE>




            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-D
                       Combined Balance Sheets
                     December 31, 1999 and 1998

                               ASSETS
                               ------

                                           1999          1998
                                        -----------   ----------
CURRENT ASSETS:
   Cash and cash equivalents             $183,942      $167,361
   Accounts receivable:
      Oil and gas sales                   130,579       134,477
                                          -------       -------
      Total current assets               $314,521      $301,838

NET OIL AND GAS PROPERTIES, utilizing
   the successful efforts method          522,300       605,793

DEFERRED CHARGE                            85,847        66,062
                                          -------       -------
                                         $922,668      $973,693
                                          =======       =======

             LIABILITIES AND PARTNERS' CAPITAL (DEFICIT)
             -------------------------------------------

CURRENT LIABILITIES:
   Accounts payable                      $ 16,194      $  9,270
   Gas imbalance payable                   36,593        43,521
                                          -------       -------
      Total current liabilities          $ 52,787      $ 52,791

ACCRUED LIABILITY                        $ 26,398      $ 14,456

PARTNERS' CAPITAL (DEFICIT):
   General Partner                      ($ 31,152)    ($ 53,161)
   Limited Partners, issued and
      outstanding, 7,195 Units            874,635       959,607
                                          -------       -------
      Total Partners' capital            $843,483      $906,446
                                          -------       -------
                                         $922,668      $973,693
                                          =======       =======




          The accompanying notes are an integral part of these combined
                              financial statements.




                                      F-2
<PAGE>




            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-D
                  Combined Statements of Operations
        For the Years Ended December 31, 1999, 1998, and 1997


                                  1999         1998         1997
                               ----------   ----------   ----------
REVENUES:
   Oil and gas sales            $  771,318  $1,061,235   $1,545,097
   Interest income                   6,129      11,601       10,558
   Gain on sale of oil and
       gas properties                  494     260,624       24,113
                                 ---------   ---------    ---------
                                $  777,941  $1,333,460   $1,579,768
COSTS AND EXPENSES:
   Lease operating              $  107,635  $  162,006   $  183,675
   Production tax                   51,917      72,475      110,675
   Depreciation, depletion,
      and amortization of oil
      and gas properties            85,530      97,974      112,862
   Impairment provision               -           -          61,790
   General and administrative       90,409      89,722       91,372
                                 ---------  ----------    ---------
                                $  335,491  $  422,177   $  560,374
                                 ---------   ---------    ---------
NET INCOME                      $  442,450  $  911,283   $1,019,394
                                 =========   =========    =========

GENERAL PARTNER -
   NET INCOME                   $   77,422  $  148,669   $  173,924
                                 =========   =========    =========

LIMITED PARTNERS -
   NET INCOME                   $  365,028  $  762,614   $  845,470
                                 =========   =========    =========

NET INCOME per Unit             $    50.73  $   105.99   $   117.51
                                 =========   =========    =========

UNITS OUTSTANDING                    7,195       7,195        7,195
                                 =========   =========    =========



          The accompanying notes are an integral part of these combined
                              financial statements.



                                      F-3
<PAGE>



            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-D
    Combined Statements of Changes in Partners' Capital (Deficit)
        For the Years Ended December 31, 1999, 1998, and 1997


                               Limited      General
                               Partners     Partner      Total
                             ------------  ---------- ------------

Balance, Dec. 31, 1996        $1,540,523   ($  4,248)  $1,536,275
   Net income                    845,470     173,924    1,019,394
   Cash distributions        ( 1,095,000)  ( 197,236) ( 1,292,236)
                               ---------     -------    ---------

Balance, Dec. 31, 1997        $1,290,993   ($ 27,560)  $1,263,433
   Net income                    762,614     148,669      911,283
   Cash distributions        ( 1,094,000)  ( 174,270) ( 1,268,270)
                               ---------     -------    ---------

Balance, Dec. 31, 1998        $  959,607   ($ 53,161)  $  906,446
   Net income                    365,028      77,422      442,450
   Cash distributions        (   450,000)  (  55,413) (   505,413)
                               ---------     -------    ---------

Balance, Dec. 31, 1999        $  874,635   ($ 31,152)  $  843,483
                               =========     =======    =========




          The accompanying notes are an integral part of these combined
                              financial statements.




                                      F-4
<PAGE>





                 GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-D
               GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-D
                       Combined Statements of Cash Flows
             For the Years Ended December 31, 1999, 1998, and 1997

                                         1999          1998         1997
                                      -----------   ----------   -----------

CASH FLOWS FROM OPERATING
   ACTIVITIES:
   Net income                          $442,450     $  911,283    $1,019,394
   Adjustments to reconcile
      net income to net cash
      provided by operating
      activities:
      Depreciation, depletion,
        and amortization of oil
        and gas properties               85,530         97,974       112,862
      Impairment provision                 -              -           61,790
      Gain on sale of oil and
        gas properties                (     494)   (   260,624)  (    24,113)
      Decrease in accounts
        receivable - oil and gas
        sales                             3,898        121,524        50,856
      (Increase) decrease in
        deferred charge               (  19,785)        38,731   (     6,778)
      Increase (decrease) in
        accounts payable                  6,924    (    22,040)       16,025
      Increase (decrease) in gas
        imbalance payable             (   6,928)         3,550         3,284
      Increase (decrease) in accrued
        liability                        11,942            111   (     2,471)
                                        -------      ---------     ---------
   Net cash provided by
      operating activities             $523,537     $  890,509    $1,230,849
                                        -------      ---------     ---------

CASH FLOWS FROM INVESTING
   ACTIVITIES:
   Capital expenditures               ($  2,037)   ($    1,811)  ($   34,805)
   Proceeds from sale of
      oil and gas properties                494        272,824        25,350
                                        -------      ---------     ---------
   Net cash provided (used)
      by investing activities         ($  1,543)    $  271,013   ($    9,455)
                                        -------      ---------     ---------

CASH FLOWS FROM FINANCING
   ACTIVITIES:
   Cash distributions                 ($505,413)   ($1,268,270)  ($1,292,236)
                                        -------      ---------     ---------
   Net cash used by financing
      activities                      ($505,413)   ($1,268,270)  ($1,292,236)
                                        -------      ---------     ---------




                                      F-5
<PAGE>





NET INCREASE (DECREASE) IN
   CASH AND CASH EQUIVALENTS           $ 16,581    ($  106,748)  ($   70,842)

CASH AND CASH EQUIVALENTS
   AT BEGINNING OF PERIOD               167,361        274,109       344,951
                                        -------      ---------     ---------
CASH AND CASH EQUIVALENTS
   AT END OF PERIOD                    $183,942     $  167,361    $  274,109
                                        =======      =========     =========






              The accompanying notes are an integral part of these
                         combined financial statements.



                                      F-6
<PAGE>




                  REPORT OF INDEPENDENT ACCOUNTANTS

TO THE PARTNERS

GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
GEODYNE PRODUCTION PARTNERSHIP I-E

      In our opinion,  the accompanying  combined balance sheets and the related
combined  statements of operations,  changes in partners'  capital (deficit) and
cash flows present  fairly,  in all material  respects,  the combined  financial
position of the  Geodyne  Energy  Income  Limited  Partnership  I-E, an Oklahoma
limited partnership, and Geodyne Production Partnership I-E, an Oklahoma general
partnership,  at December 31, 1999 and 1998,  and the combined  results of their
operations  and their cash flows for each of the three years in the period ended
December 31, 1999, in conformity with accounting  principles  generally accepted
in the United States.  These financial  statements are the responsibility of the
Partnerships'  management;  our responsibility is to express an opinion on these
financial  statements  based on our  audits.  We  conducted  our audits of these
financial statements in accordance with auditing standards generally accepted in
the United  States,  which  require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the  amounts  and  disclosures  in  the  financial  statements,   assessing  the
accounting  principles  used and significant  estimates made by management,  and
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for the opinion expressed above.










                               PricewaterhouseCoopers LLP

Tulsa, Oklahoma
February 18, 2000



                                      F-7
<PAGE>



            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-E
                       Combined Balance Sheets
                     December 31, 1999 and 1998

                               ASSETS
                               ------

                                            1999          1998
                                        -----------   ------------

CURRENT ASSETS:
   Cash and cash equivalents             $  891,310    $   12,003
   Accounts receivable:
      Oil and gas sales                     772,416       651,445
                                          ---------     ---------
      Total current assets               $1,663,726    $  663,448

NET OIL AND GAS PROPERTIES, utilizing
   the successful efforts method          3,573,231     4,191,663

DEFERRED CHARGE                             622,281       570,545
                                          ---------     ---------
                                         $5,859,238    $5,425,656
                                          =========     =========

             LIABILITIES AND PARTNERS' CAPITAL (DEFICIT)
             -------------------------------------------

CURRENT LIABILITIES:
   Accounts payable                      $  104,132    $  209,486
   Gas imbalance payable                    174,639       115,808
                                          ---------     ---------
      Total current liabilities          $  278,771    $  325,294

ACCRUED LIABILITY                        $  189,964    $  151,490

PARTNERS' CAPITAL (DEFICIT):
   General Partner                      ($  106,782)  ($  232,100)
   Limited Partners, issued and
      outstanding, 41,839 Units           5,497,285     5,180,972
                                          ---------     ---------
      Total Partners' capital            $5,390,503    $4,948,872
                                          ---------     ---------
                                         $5,859,238    $5,425,656
                                          =========     =========




          The accompanying notes are an integral part of these combined
                              financial statements.




                                      F-8
<PAGE>




            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-E
                  Combined Statements of Operations
        For the Years Ended December 31, 1999, 1998, and 1997

                                   1999         1998        1997
                                ----------   ----------   ---------

REVENUES:
   Oil and gas sales            $4,161,530   $4,611,235  $6,004,252
   Interest income                  18,059       39,917      34,723
   Gain on sale of oil and
      gas properties                 1,587    1,154,155     120,840
   Insurance settlement            675,000         -           -
   Other income                       -            -         69,917
                                 ---------    ---------   ---------
                                $4,856,176   $5,805,307  $6,229,732
COSTS AND EXPENSES:
   Lease operating              $  884,151   $1,182,851  $1,337,863
   Production tax                  269,786      323,993     433,287
   Depreciation, depletion,
      and amortization of oil
      and gas properties           652,767      756,985     729,388
   Impairment provision               -         547,048     291,690
   General and administrative      520,070      516,682     526,066
                                 ---------    ---------   ---------
                                $2,326,774   $3,327,559  $3,318,294
                                 ---------    ---------   ---------
NET INCOME                      $2,529,402   $2,477,748  $2,911,438
                                 =========    =========   =========

GENERAL PARTNER -
   NET INCOME                   $  468,089   $  548,239  $  568,504
                                 =========    =========   =========

LIMITED PARTNERS -
   NET INCOME                   $2,061,313   $1,929,509  $2,342,934
                                 =========    =========   =========

NET INCOME per Unit             $    49.27   $    46.12  $    56.00
                                 =========    =========   =========

UNITS OUTSTANDING                   41,839       41,839      41,839
                                 =========    =========   =========




          The accompanying notes are an integral part of these combined
                              financial statements.




                                      F-9
<PAGE>




            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-E
    Combined Statements of Changes in Partners' Capital (Deficit)
        For the Years Ended December 31, 1999, 1998, and 1997


                            Limited        General
                            Partners       Partner      Total
                          ------------   ----------  -------------

Balance, Dec. 31, 1996     $8,300,529    ($113,140)   $8,187,389
   Net income               2,342,934      568,504     2,911,438
   Cash distributions     ( 3,460,000)   ( 683,798)  ( 4,143,798)
                            ---------      -------     ---------

Balance, Dec. 31, 1997     $7,183,463    ($228,434)   $6,955,029
   Net income               1,929,509      548,239     2,477,748
   Cash distributions     ( 3,932,000)   ( 551,905)  ( 4,483,905)
                            ---------      -------     ---------

Balance, Dec. 31, 1998     $5,180,972    ($232,100)   $4,948,872
   Net income               2,061,313      468,089     2,529,402
   Cash distributions     ( 1,745,000)   ( 342,771)  ( 2,087,771)
                            ---------      -------     ---------

Balance, Dec. 31, 1999     $5,497,285    ($106,782)   $5,390,503
                            =========      =======     =========





          The accompanying notes are an integral part of these combined
                              financial statements.




                                      F-10
<PAGE>





                 GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-E
               GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-E
                       Combined Statements of Cash Flows
             For the Years Ended December 31, 1999, 1998, and 1997

                                       1999           1998           1997
                                   ------------   ------------   ------------

CASH FLOWS FROM OPERATING
   ACTIVITIES:
   Net income                       $2,529,402     $2,477,748     $2,911,438
   Adjustments to reconcile
      net income to net cash
      provided by operating
      activities:
      Depreciation, depletion,
        and amortization of oil
        and gas properties             652,767        756,985        729,388
      Impairment provision                -           547,048        291,690
      Gain on sale of oil and
        gas properties             (     1,587)   ( 1,154,155)   (   120,840)
      (Increase) decrease in
        accounts receivable -
        oil and gas sales          (   120,971)       342,909        238,720
      (Increase) decrease in
        accounts receivable
        - other                           -            69,917    (    69,917)
      (Increase) decrease in
        deferred charge            (    51,736)       179,824         72,455
      Increase (decrease) in
        accounts payable           (   105,354)   (    48,038)       139,262
      Increase (decrease) in gas
        imbalance payable               58,831    (    20,076)        11,684
      Increase (decrease) in
        accrued liability               38,474         13,134    (     4,307)
                                     ---------      ---------      ---------
   Net cash provided by
      operating activities          $2,999,826     $3,165,296     $4,199,573
                                     ---------      ---------      ---------

CASH FLOWS FROM INVESTING
   ACTIVITIES:
   Capital expenditures            ($   35,443)   ($  762,520)   ($  279,631)
   Proceeds from sale of
      oil and gas properties             2,695      1,265,357        156,744
                                     ---------      ---------      ---------
   Net cash provided (used)
      by investing activities      ($   32,748)    $  502,837    ($  122,887)
                                     ---------      ---------      ---------

CASH FLOWS FROM FINANCING
   ACTIVITIES:
   Cash distributions              ($2,087,771)   ($4,483,905)   ($4,143,798)
                                     ---------      ---------      ---------




                                      F-11
<PAGE>





   Net cash used by financing
      activities                   ($2,087,771)   ($4,483,905)   ($4,143,798)
                                     ---------      ---------      ---------

NET DECREASE IN CASH
   AND CASH EQUIVALENTS            ($  879,307)   ($  815,772)   ($   67,112)

CASH AND CASH EQUIVALENTS
   AT BEGINNING OF PERIOD               12,003        827,775        894,887
                                     ---------      ---------      ---------

CASH AND CASH EQUIVALENTS
   AT END OF PERIOD                 $  891,310     $   12,003     $  827,775
                                     =========      =========      =========





              The accompanying notes are an integral part of these
                         combined financial statements.




                                      F-12
<PAGE>





                  REPORT OF INDEPENDENT ACCOUNTANTS

TO THE PARTNERS

GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F
GEODYNE PRODUCTION PARTNERSHIP I-F

      In our opinion,  the accompanying  combined balance sheets and the related
combined  statements of operations,  changes in partners'  capital (deficit) and
cash flows present  fairly,  in all material  respects,  the combined  financial
position of the  Geodyne  Energy  Income  Limited  Partnership  I-F, an Oklahoma
limited partnership, and Geodyne Production Partnership I-F, an Oklahoma general
partnership,  at December 31, 1999 and 1998,  and the combined  results of their
operations  and their cash flows for each of the three years in the period ended
December 31, 1999, in conformity with accounting  principles  generally accepted
in the United States.  These financial  statements are the responsibility of the
Partnerships'  management;  our responsibility is to express an opinion on these
financial  statements  based on our  audits.  We  conducted  our audits of these
financial statements in accordance with auditing standards generally accepted in
the United  States,  which  require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the  amounts  and  disclosures  in  the  financial  statements,   assessing  the
accounting  principles  used and significant  estimates made by management,  and
evaluating the overall  financial  statement  presentation.  We believe that our
audits provide a reasonable basis for the opinion expressed above.










                               PricewaterhouseCoopers LLP


Tulsa, Oklahoma
February 18, 2000



                                      F-13
<PAGE>



            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-F
                       Combined Balance Sheets
                     December 31, 1999 and 1998

                               ASSETS
                               ------

                                            1999          1998
                                        ------------  ------------

CURRENT ASSETS:
   Cash and cash equivalents             $  254,500    $    5,457
   Accounts receivable:
      Oil and gas sales                     250,188       195,444
                                          ---------     ---------
      Total current assets               $  504,688    $  200,901

NET OIL AND GAS PROPERTIES, utilizing
  the successful efforts method           1,110,525     1,311,368

DEFERRED CHARGE                             375,691       346,704
                                          ---------     ---------
                                         $1,990,904    $1,858,973
                                          =========     =========

             LIABILITIES AND PARTNERS' CAPITAL (DEFICIT)
             -------------------------------------------

CURRENT LIABILITIES:
  Accounts payable                       $   33,956    $  406,740
  Gas imbalance payable                      68,901        38,738
                                          ---------     ---------
    Total current liabilities            $  102,857    $  445,478

ACCRUED LIABILITY                        $  122,086    $  109,153

PARTNERS' CAPITAL (DEFICIT):
  General Partner                       ($    9,232)  ($   94,547)
  Limited Partners, issued and
    outstanding, 14,321 Units             1,775,193     1,398,889
                                          ---------     ---------
    Total Partners' capital              $1,765,961    $1,304,342
                                          ---------     ---------
                                         $1,990,904    $1,858,973
                                          =========     =========



          The accompanying notes are an integral part of these combined
                              financial statements.



                                      F-14
<PAGE>



            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-F
                  Combined Statements of Operations
        For the Years Ended December 31, 1999, 1998, and 1997

                                  1999         1998         1997
                               ----------   ----------   ----------
REVENUES:
   Oil and gas sales           $1,292,077   $1,442,718   $2,021,805
   Interest income                  3,902       12,630       11,252
   Gain on sale of oil and
      gas properties                  546      380,920       76,108
   Insurance settlement           472,500         -            -
   Other income                      -            -          48,942
                                ---------    ---------    ---------
                               $1,769,025   $1,836,268   $2,158,107
COSTS AND EXPENSES:
   Lease operating             $  345,710   $  571,401   $  540,388
   Production tax                  79,336       96,615      143,412
   Depreciation, depletion,
      and amortization of oil
      and gas properties          221,991      254,674      257,820
   Impairment provision              -         382,925      114,631
   General and administrative     178,697      177,383      180,860
                                ---------    ---------    ---------
                               $  825,734   $1,482,998   $1,237,111
                                ---------    ---------    ---------
NET INCOME                     $  943,291   $  353,270   $  920,996
                                =========    =========    =========

GENERAL PARTNER  -
   NET INCOME                  $  171,987   $  140,360   $  183,677
                                =========    =========    =========

LIMITED PARTNERS -
   NET INCOME                  $  771,304   $  212,910   $  737,319
                                =========    =========    =========

NET INCOME per Unit            $    53.86   $    14.87   $    51.49
                                =========    =========    =========

UNITS OUTSTANDING                  14,321       14,321       14,321
                                =========    =========    =========




          The accompanying notes are an integral part of these combined
                              financial statements.



                                      F-15
<PAGE>



            GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F
          GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-F
    Combined Statements of Changes in Partners' Capital (Deficit)
        For the Years Ended December 31, 1999, 1998, and 1997


                             Limited       General
                             Partners      Partner       Total
                           ------------   ----------  ------------

Balance, Dec. 31, 1996      $2,845,660    ($ 59,110)   $2,786,550
   Net income                  737,319      183,677       920,996
   Cash distributions      ( 1,173,000)   ( 184,378)  ( 1,357,378)
                             ---------      -------     ---------

Balance, Dec. 31, 1997      $2,409,979    ($ 59,811)   $2,350,168
   Net income                  212,910      140,360       353,270
   Cash distributions      ( 1,224,000)   ( 175,096)  ( 1,399,096)
                             ---------      -------     ---------

Balance, Dec. 31, 1998      $1,398,889    ($ 94,547)   $1,304,342
   Net income                  771,304      171,987       943,291
   Cash distributions      (   395,000)   (  86,672)  (   481,672)
                             ---------      -------     ---------

Balance, Dec. 31, 1999      $1,775,193    ($  9,232)   $1,765,961
                             =========      =======     =========



          The accompanying notes are an integral part of these combined
                              financial statements.




                                      F-16
<PAGE>





                 GEODYNE ENERGY INCOME LIMITED PARTNERSHIP I-F
               GEODYNE ENERGY INCOME PRODUCTION PARTNERSHIP I-F
                       Combined Statements of Cash Flows
             For the Years Ended December 31, 1999, 1998, and 1997

                                       1999          1998          1997
                                   ------------  ------------  ------------

CASH FLOWS FROM OPERATING
   ACTIVITIES:
   Net income                       $  943,291    $  353,270    $  920,996
   Adjustments to reconcile
      net income to net cash
      provided by operating
      activities:
      Depreciation, depletion,
        and amortization of oil
        and gas properties             221,991       254,674       257,820
      Impairment provision                -          382,925       114,631
      Gain on sale of oil
        and gas properties         (       546)  (   380,920)  (    76,108)
      (Increase) decrease in
        accounts receivable -
        oil and gas sales          (    54,744)      112,290       124,154
      (Increase) decrease in
        accounts receivable
        - other                           -           48,942   (    48,942)
      (Increase) decrease in
        deferred charge            (    28,987)      154,312   (    35,815)
      Increase (decrease) in
        accounts payable           (   372,784)      353,535         5,841
      Increase (decrease) in gas
        imbalance payable               30,163   (     8,308)        1,767
      Increase (decrease) in
        accrued liability               12,933   (     7,248)       12,611
                                     ---------     ---------     ---------
  Net cash provided by
   operating activities             $  751,317    $1,263,472    $1,276,955
                                     ---------     ---------     ---------

CASH FLOWS FROM INVESTING
   ACTIVITIES:
   Capital expenditures            ($   23,334)  ($  548,339)  ($  104,709)
   Proceeds from sale of
      oil and gas properties             2,732       438,200        97,288
                                     ---------     ---------     ---------
   Net cash used by
      investing activities         ($   20,602)  ($  110,139)  ($    7,421)
                                     ---------     ---------     ---------

CASH FLOWS FROM FINANCING
   ACTIVITIES:
   Cash distributions              ($  481,672)  ($1,399,096)  ($1,357,378)
                                     ---------     ---------     ---------



                                      F-17
<PAGE>




   Net cash used by financing
      activities                   ($  481,672)  ($1,399,096)  ($1,357,378)
                                     ---------     ---------     ---------

NET INCREASE (DECREASE) IN
   CASH AND CASH EQUIVALENTS        $  249,043   ($  245,763)  ($   87,844)

CASH AND CASH EQUIVALENTS
   AT BEGINNING OF PERIOD                5,457       251,220       339,064
                                     ---------     ---------     ---------
CASH AND CASH EQUIVALENTS
   AT END OF PERIOD                 $  254,500    $    5,457    $  251,220
                                     =========     =========     =========




              The accompanying notes are an integral part of these
                         combined financial statements.




                                      F-18
<PAGE>





              GEODYNE ENERGY INCOME PROGRAM I LIMITED PARTNERSHIPS
                   Notes to the Combined Financial Statements
              For the Years Ended December 31, 1999, 1998, and 1997


1.    ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

      Organization and Nature of Operations

      The Geodyne Energy Income Limited  Partnerships (the  "Partnerships") were
formed  pursuant  to a public  offering  of  depositary  units  ("Units").  Upon
formation,  investors became limited partners (the "Limited  Partners") and held
Units issued by each Partnership. Geodyne Resources, Inc. is the general partner
of the  Partnerships.  Each  Partnership  is a general  partner  in the  related
Geodyne Energy Income  Production  Partnership  (collectively,  the  "Production
Partnership") in which Geodyne  Resources,  Inc. serves as the managing partner.
Limited Partner capital contributions were contributed to the related Production
Partnerships   for  investment  in  producing  oil  and  gas   properties.   The
Partnerships  were activated on the following  dates with the following  Limited
Partner capital contributions:

                                                  Limited
                                                  Partner
                                Date of           Capital
           Partnership        Activation       Contributions
           -----------    ------------------   --------------

              I-D         March 4, 1986           7,194,700
              I-E         September 10, 1986     41,839,400
              I-F         December 16, 1986      14,320,900

      The Partnerships would have terminated on December 31, 1999. However,  the
General  Partner has  extended the terms of the  Partnerships  for the first two
year  extension  period to December 31, 2001 pursuant to its right to extend the
term of each Partnership for up to five periods of two years each.

      For  purposes  of  these  financial   statements,   the  Partnerships  and
Production  Partnerships are collectively  referred to as the "Partnerships" and
the general  partner and managing  partner are  collectively  referred to as the
"General Partner."

      An affiliate of the General  Partner owned the following Units at December
31, 1999:

                           Number of              Percent of
           Partnership    Units Owned          Outstanding Units
           -----------    -----------          -----------------
              I-D            1,077                   15.0%
              I-E            8,306                   19.9%
              I-F            3,384                   23.6%




                                      F-19
<PAGE>




      The  Partnerships'  sole business is the development and production of oil
and gas.  Substantially  all of the  Partnerships'  gas  reserves are being sold
regionally  on the "spot  market." Due to the highly  competitive  nature of the
spot market, prices on the spot market are subject to wide seasonal and regional
pricing  fluctuations.  In  addition,  such  spot  market  sales  are  generally
short-term  in nature and are  dependent  upon the  obtaining of  transportation
services  provided by pipelines.  The  Partnerships'  oil is sold at or near the
Partnerships'   wells  under   short-term   purchase   contracts  at  prevailing
arrangements  which are customary in the oil industry.  The prices  received for
the  Partnerships'  oil  and gas  are  subject  to  influences  such  as  global
consumption and supply trends.


      Allocation of Costs and Revenues

      The combination of the allocation provisions in each Partnership's limited
partnership  agreement and each Production  Partnership's  partnership agreement
(collectively,  the "Partnership Agreement") results in allocations of costs and
income between the Limited Partners and General Partner as follows:

                             Before Payout(1)     After Payout(1)
                           ------------------   ------------------
                           General    Limited   General   Limited
                           Partner    Partners  Partner   Partners
                           --------   --------  --------  --------
        Costs(2)
------------------------
Sales commissions, pay-
    ment for organization
    and offering costs
    and management fee        1%         99%        -         -
Property acquisition
    costs                     1%         99%        1%       99%
Identified development
    drilling                  1%         99%        1%       99%
Development drilling         10%         90%       15%       85%
General and administra-
    tive costs, direct
    administrative costs
    and operating costs(3)   10%         90%       15%       85%

        Income(2)
------------------------
Temporary investments of
    Limited Partners'
    capital contributions     1%         99%        1%       99%
Income from oil and gas
    production(3)            10%         90%       15%       85%
Sale of producing pro-
    perties (3)              10%         90%       15%       85%



                                      F-20
<PAGE>



All other income             10%         90%       15%       85%

----------
(1)   Payout occurs when total  distributions  to Limited  Partners  equal total
      original Limited Partner subscriptions.
(2)   The allocations in the table result  generally from the combined effect of
      the allocation provisions in the Partnership Agreements.  For example, the
      costs  incurred in  development  drilling  are  allocated  90.9091% to the
      limited  partnership  and 9.0909% to the  managing  partner.  The 90.9091%
      portion of these costs allocated to the limited  partnership,  when passed
      through the limited  partnership,  is further allocated 99% to the limited
      partners  and 1% to the  general  partner.  In  this  manner  the  Limited
      Partners  are  allocated  90% of such  costs and the  General  Partner  is
      allocated 10% of such costs.
(3)   Distributions  of cash and the above allocation of income and costs of the
      General  Partner  are  subject  to  subordination  during  the  first  two
      twelve-month  "allocation  periods".  The first  twelve-month  "allocation
      period"  commenced on the last day of the first full fiscal  quarter after
      the  earlier  of (i) the  date on  which  90% of a  limited  partnership's
      capital contribution to a Production Partnership has been expended or (ii)
      two  years  after  activation  of a  Production  Partnership.  The  second
      twelve-month  "allocation  period"  commenced  at the  end  of  the  first
      allocation  period.  To the extent that the amount of cash  distributed in
      the allocation  periods is insufficient to permit the Limited  Partners to
      receive a 15% cumulative (but not compounded) twelve-month return on their
      capital  contributions,  up to one-half of the managing partners' share of
      distributable  cash after each such allocation period, and a corresponding
      amount of their allocable share of income and costs,  shall  thereafter be
      allocated  to permit  the  Limited  Partners  to  receive,  to the  extent
      available,  the aggregate amount of such deficiency.  After the allocation
      periods,  the managing partner may recoup amounts previously  allocated to
      the Limited  Partners  pursuant  to this  subordination  provision  to the
      extent  income is  otherwise  sufficient  to permit  Limited  Partners  to
      receive at least a 15% cumulative (but not compounded) twelve-month return
      since the commencement of the allocation periods.

      The I-D  Partnership  achieved  payout  in late  1991  and the I-E and I-F
Partnerships  achieved  payout during the second quarter of 1995.  After payout,
operations  were allocated  using the after payout  percentages set forth in the
table above.


      Basis of Presentation

      These  financial   statements   reflect  the  combined  accounts  of  each
Partnership  after the  elimination of all  inter-partnership  transactions  and
balances.



                                      F-21
<PAGE>




      Cash and Cash Equivalents

      The Partnerships consider all highly liquid investments with a maturity of
three months or less when purchased to be cash equivalents. Cash equivalents are
not insured, which cause the Partnerships to be subject to risk.


      Credit Risk

      Accrued  oil and gas sales  which  are due from a  variety  of oil and gas
purchasers  subject the  Partnerships to a concentration of credit risk. Some of
these purchasers are discussed in Note 3 - Major Customers.


      Oil and Gas Properties

      The  Partnerships  follow the successful  efforts method of accounting for
their  oil  and  gas  properties.  Under  the  successful  efforts  method,  the
Partnerships  capitalize all property  acquisition  costs and development  costs
incurred in  connection  with the further  development  of oil and gas reserves.
Property  acquisition  costs include costs incurred by the  Partnerships  or the
General  Partner  to  acquire  producing  properties,  including  related  title
insurance or examination costs, commissions,  engineering,  legal and accounting
fees, and similar costs directly related to the acquisitions,  plus an allocated
portion of the General Partner's  property screening costs. The acquisition cost
to the Partnerships of properties acquired by the General Partner is adjusted to
reflect  the net cash  results of  operations,  including  interest  incurred to
finance the  acquisition,  for the period of time the properties are held by the
General Partner. Leasehold impairment of unproved properties is recognized based
upon  an  individual  property  assessment  and  exploratory  experience.   Upon
discovery of commercial  reserves,  leasehold costs are transferred to producing
properties.

      Depletion of the cost of producing oil and gas properties, amortization of
related intangible  drilling and development costs, and depreciation of tangible
lease and well  equipment are computed on the  units-of-production  method.  The
Partnerships' depletion,  depreciation,  and amortization includes dismantlement
and  abandonment  costs,  net of  estimated  salvage  value.  The  depreciation,
depletion,  and amortization  rates per equivalent barrel of oil produced during
the years ended December 31, 1999, 1998, and 1997 were as follows:




                                      F-22
<PAGE>



           Partnership     1999      1998       1997
           -----------    ------    ------     ------

               I-D        $1.41     $1.12      $1.09
               I-E         2.07      1.89       1.68
               I-F         2.43      2.15       1.93


      When complete units of depreciable property are retired or sold, the asset
cost and related  accumulated  depreciation are eliminated with any gain or loss
reflected in income.  When less than complete units of depreciable  property are
retired or sold, the proceeds are credited to oil and gas properties.

      The  Partnerships  evaluate the  recoverability  of the carrying  costs of
their proved oil and gas properties at the field level. If the unamortized costs
of oil and gas properties within a field exceed the expected undiscounted future
cash flows from such  properties,  the cost of the properties is written down to
fair value,  which is determined by using the discounted  future cash flows from
the  properties.  During 1999,  1998,  and 1997, the  Partnerships  recorded the
following non-cash charges against earnings (impairment provisions):


          Partnership      1999          1998         1997
          -----------    ---------      -------     ---------

             I-D          $   -         $   -       $12,290
             I-E              -          547,048     59,728
             I-F              -          382,925     20,908

The risk that the  Partnerships  will be required to record  similar  impairment
provisions in the future increases as oil and gas prices decrease.

      In  addition,   during  1997  the  General  Partner  determined  that  the
Partnerships' unproved properties would be uneconomic to develop and, therefore,
of little or no value.  This  determination  was based on an  evaluation  by the
General  Partner that it was unlikely that these  unproved  properties  would be
developed  due to low oil and  gas  prices  and  provisions  in the  Partnership
Agreements which limit the level of permissible  drilling activity.  As a result
of this determination,  the Partnerships recorded the following non-cash charges
against  earnings at March 31, 1997 in order to reflect the  writing-off  of the
Partnerships' unproved properties:

                Partnership                Amount
                -----------               --------

                   I-D                    $ 49,500
                   I-E                     231,962
                   I-F                      93,723




                                      F-23
<PAGE>





      Deferred Charge

      The Deferred Charge represents costs deferred for lease operating expenses
incurred  in  connection  with the  Partnerships'  underproduced  gas  imbalance
positions.  The rate used in calculating  the deferred  charge is the average of
the annual  production costs per Mcf. At December 31, 1999 and 1998,  cumulative
total gas sales volumes for underproduced wells were less than the Partnerships'
pro-rata  share  of total  gas  production  from  these  wells by the  following
amounts:

                            1999                   1998
                     -------------------    -------------------
      Partnership       Mcf       Amount       Mcf       Amount
      -----------    ---------   --------   ---------   --------

          I-D          233,407   $ 85,847     244,675   $ 66,062
          I-E        1,067,927    622,281   1,162,007    570,545
          I-F          396,006    375,691     433,055    346,704


      Accrued Liability

      The Accrued  Liability  represents  charges  accrued  for lease  operating
expenses  incurred  in  connection  with  the  Partnerships'   overproduced  gas
imbalance  positions.  The rate used in calculating the accrued liability is the
average of the annual  production  costs per Mcf. At December 31, 1999 and 1998,
cumulative  total  gas  sales  volumes  for  overproduced   wells  exceeded  the
Partnerships'  pro-rata  share of total gas  production  from these wells by the
following amounts:

                            1999                  1998
                     -------------------    -----------------
      Partnership      Mcf        Amount      Mcf      Amount
      -----------    -------     --------   -------   --------

          I-D         71,772     $ 26,398    53,542   $ 14,456
          I-E        326,006      189,964   308,534    151,490
          I-F        128,688      122,086   136,339    109,153


      Oil and Gas Sales and Gas Imbalance Payable

      The Partnerships' oil and condensate production is sold, title passed, and
revenue recognized at or near the Partnerships'  wells under short-term purchase
contracts  at  prevailing  prices  in  accordance  with  arrangements  which are
customary in the oil  industry.  Sales of gas  applicable  to the  Partnerships'
interest in producing oil and gas leases are recorded as revenue when the gas is
metered and title transferred  pursuant to the gas sales contracts  covering the
Partnerships' interest in gas reserves.



                                      F-24
<PAGE>



During such times as a Partnership's  sales of gas exceed its pro rata ownership
in a well,  such sales are recorded as revenue  unless total sales from the well
have exceeded the Partnership's share of estimated total gas reserves underlying
the  property,  at which time such excess is recorded as a liability.  The rates
per Mcf used to  calculate  this  liability  are based on the average gas prices
received  for the  volumes at the time the  overproduction  occurred.  This also
approximates the price for which the  Partnerships  are currently  settling this
liability.  At December 31, 1999 and 1998 total sales exceeded the Partnerships'
share of estimated total gas reserves as follows:

                           1999                   1998
                     -----------------      -----------------
      Partnership      Mcf      Amount        Mcf      Amount
      -----------    -------   -------      -------  --------

          I-D         24,395   $ 36,593     29,014   $ 43,521
          I-E        116,426    174,639     77,205    115,808
          I-F         45,934     68,901     25,825     38,738

These  amounts were recorded as gas  imbalance  payables in accordance  with the
sales  method.  These gas  imbalance  payables  will be  settled  by either  gas
production by the  underproduced  party in excess of current  estimates of total
gas  reserves  for the well or by a  negotiated  or  contractual  payment to the
underproduced party.


      General and Administrative Overhead

      The General  Partner and its  affiliates are reimbursed for actual general
and  administrative  costs  incurred  and  attributable  to the  conduct  of the
business affairs and operations of the Partnerships.


      Use of Estimates in Financial Statements

      The  preparation  of financial  statements  in conformity  with  generally
accepted  accounting  principles  requires  management  to  make  estimates  and
assumptions  that  affect the  reported  amounts of assets and  liabilities  and
disclosure of  contingent  assets and  liabilities  at the date of the financial
statements  and the  reported  amounts  of  revenues  and  expenses  during  the
reporting period. Actual results could differ from those estimates. Further, the
deferred  charge,  the gas  imbalance  payable,  and the accrued  liability  all
involve  estimates  which  could  materially  differ  from  the  actual  amounts
ultimately realized or incurred in the near term. Oil and gas reserves (see Note
4) also involve  significant  estimates which could  materially  differ from the
actual amounts ultimately realized.





                                      F-25
<PAGE>





      Income Taxes

      Income or loss for income tax  purposes  is  includable  in the income tax
returns of the partners.  Accordingly,  no recognition  has been given to income
taxes in these financial statements.


2.    TRANSACTIONS WITH RELATED PARTIES

      The  Partnerships  reimburse  the  General  Partner  for the  general  and
administrative  overhead applicable to the Partnerships,  based on an allocation
of actual costs  incurred by the General  Partner.  When actual  costs  incurred
benefit other  Partnerships and affiliates,  the allocation of costs is based on
the  relationship of the  Partnerships'  reserves to the total reserves owned by
all  Partnerships  and affiliates.  The General Partner believes this allocation
method is reasonable.  Although the actual costs incurred by the General Partner
and its affiliates have fluctuated during the three years presented, the amounts
charged  to the  Partnerships  have not  fluctuated  every  year due to  expense
limitations imposed by the Partnership Agreements. The following is a summary of
payments made to the General Partner or its affiliates by the  Partnerships  for
general and administrative overhead costs for the years ended December 31, 1999,
1998, and 1997:

           Partnership      1999       1998       1997
           -----------    --------   --------   --------

               I-D        $ 79,944   $ 79,944   $ 79,944
               I-E         464,880    464,880    464,880
               I-F         159,120    159,120    159,120


      Affiliates  of the  Partnerships  operate  certain  of  the  Partnerships'
properties  and  their  policy  is to bill the  Partnerships  for all  customary
charges and cost reimbursements associated with these activities,  together with
any compressor rentals, consulting, or other services provided. Such charges are
comparable  to third  party  charges in the area where the wells are located and
are the same as charged to other working interest owners in the wells.


3.    MAJOR CUSTOMERS

      The following table sets forth purchasers who  individually  accounted for
ten  percent or more of each  Partnership's  combined  oil and gas sales for the
years ended December 31, 1999, 1998, and 1997:




                                      F-26
<PAGE>





Partnership           Purchaser                 Percentage
-----------     ---------------------     -----------------------
                                          1999     1998     1997
                                          -----    -----    -----

      I-D       El Paso Energy Marketing
                  Company ("El Paso")     48.4%    41.5%    35.5%
                Conoco, Inc.              18.8%      -      19.6%
                Hallwood Petroleum        11.7%    20.0%    24.9%

      I-E       El Paso                   54.6%    55.5%    51.3%

      I-F       El Paso                   30.7%    35.6%    33.9%
                Amoco Production Co.      11.7%      -        -
                Conoco, Inc.              10.8%      -        -


      In the  event  of  interruption  of  purchases  by one or  more  of  these
significant  customers or the cessation or material  change in  availability  of
open-access  transportation  by the  Partnerships'  pipeline  transporters,  the
Partnerships may encounter  difficulty in marketing their gas and in maintaining
historic sales levels. Alternative purchasers or transporters may not be readily
available.


4.    SUPPLEMENTAL OIL AND GAS INFORMATION

      The  following   supplemental   information  regarding  the  oil  and  gas
activities  of  the  Partnerships  is  presented   pursuant  to  the  disclosure
requirements promulgated by the SEC.


      Capitalized Costs

      Capitalized costs and accumulated depreciation,  depletion,  amortization,
and valuation allowance at December 31, 1999 and 1998 were as follows:






                                      F-27
<PAGE>





                           I-D Partnership
                           ---------------

                                        1999            1998
                                    ------------    ------------

           Proved properties         $4,607,189      $4,604,726

           Less accumulated
             depreciation,
             depletion, amorti-
             zation, and valua-
             tion allowance         ( 4,084,889)    ( 3,998,933)
                                      ---------       ---------

           Net oil and gas
             properties              $  522,300      $  605,793
                                      =========       =========


                           I-E Partnership
                           ---------------

                                        1999            1998
                                    ------------    ------------

           Proved properties         $26,692,096     $26,655,665

           Less accumulated
             depreciation,
             depletion, amorti-
             zation, and valua-
             tion allowance         ( 23,118,865)   ( 22,464,002)
                                      ----------      ----------

           Net oil and gas
             properties              $ 3,573,231     $ 4,191,663
                                      ==========      ==========





                                      F-28
<PAGE>





                           I-F Partnership
                           ---------------

                                       1999            1998
                                    ------------    -----------

           Proved properties         $8,044,032      $8,022,333

           Less accumulated
             depreciation,
             depletion, amorti-
             zation, and valua-
             tion allowance         ( 6,933,507)    ( 6,710,965)
                                      ---------       ---------

           Net oil and gas
             properties              $1,110,525      $1,311,368
                                      =========       =========


      Costs Incurred

      The  Partnerships  incurred  no  costs  in  connection  with  oil  and gas
acquisition  or  exploration  activities  during  1999,  1998,  and 1997.  Costs
incurred by the Partnerships in connection with oil and gas property development
activities during 1999, 1998, and 1997 were as follows:



        Partnership     1999        1998       1997
        -----------   --------    --------    -------
            I-D       $ 2,037     $  1,811   $ 34,805
            I-E        35,443      762,520    279,631
            I-F        23,334      548,339    104,709


      Quantities of Proved Oil and Gas Reserves - Unaudited

      The  following  tables   summarize   changes  in  net  quantities  of  the
Partnerships'  proved  reserves,  all of which are located in the United States,
for the periods  indicated.  The proved reserves at December 31, 1999, 1998, and
1997 were  estimated  by  petroleum  engineers  employed  by  affiliates  of the
Partnerships.  Certain reserve  information was reviewed by Ryder Scott Company,
L.P., an  independent  petroleum  engineering  firm.  The following  information
includes certain gas balancing  adjustments which cause the gas volume to differ
from the reserve  reports  prepared by the General Partner and reviewed by Ryder
Scott.





                                      F-29
<PAGE>





                           I-D Partnership
                           ---------------

                                        Crude          Natural
                                         Oil             Gas
                                      (Barrels)         (Mcf)
                                      ---------      -----------

Proved reserves, Dec. 31, 1996          55,577        2,297,923
   Production                         ( 18,760)      (  510,113)
   Sales of minerals in place         (    168)      (    5,510)
   Revisions of previous
      estimates                          4,349          156,947
                                       -------        ---------

Proved reserves, Dec. 31, 1997          40,998        1,939,247
   Production                         ( 11,249)      (  456,195)
   Sales of minerals in place         (  1,568)      (  134,605)
   Extensions and discoveries            7,889           76,181
   Revisions of previous
      estimates                          1,706          210,269
                                       -------        ---------

Proved reserves, Dec. 31, 1998          37,776        1,634,897
   Production                         (  8,482)      (  314,010)
   Revisions of previous
      estimates                         80,895          272,928
                                       -------        ---------
Proved reserves, Dec. 31, 1999         110,189        1,593,815
                                       =======        =========

PROVED DEVELOPED RESERVES:

   December 31, 1997                    40,875        1,925,548
                                       =======        =========
   December 31, 1998                    37,776        1,634,897
                                       =======        =========
   December 31, 1999                   110,166        1,593,084
                                       =======        =========




                                      F-30
<PAGE>




                           I-E Partnership
                           ---------------

                                        Crude           Natural
                                         Oil              Gas
                                      (Barrels)          (Mcf)
                                      ---------      ------------

Proved reserves, Dec. 31, 1996         520,835        11,752,987
   Production                         ( 77,648)      ( 2,139,704)
   Sales of minerals in place         ( 14,619)      (    66,444)
   Extensions and discoveries           29,604            18,612
   Revisions of previous
      estimates                       ( 58,499)          985,558
                                       -------        ----------

Proved reserves, Dec. 31, 1997         399,673        10,551,009
   Production                         ( 64,346)      ( 2,016,034)
   Sales of minerals in place         (  6,928)      (   687,223)
   Extensions and discoveries           35,494           491,481
   Revisions of previous
      estimates                       ( 45,323)        1,040,638
                                       -------        ----------

Proved reserves, Dec. 31, 1998         318,570         9,379,871
   Production                         ( 58,465)      ( 1,540,061)
   Extensions and discoveries               67            16,189
   Revisions of previous
      estimates                        467,644           435,563
                                       -------        ----------

Proved reserves, Dec. 31, 1999         727,816         8,291,562
                                       =======        ==========

PROVED DEVELOPED RESERVES:

   December 31, 1997                   399,277        10,506,977
                                       =======        ==========
   December 31, 1998                   318,570         9,379,871
                                       =======        ==========
   December 31, 1999                   727,565         8,283,990
                                       =======        ==========





                                      F-31
<PAGE>





                           I-F Partnership
                           ---------------

                                        Crude          Natural
                                         Oil             Gas
                                      (Barrels)         (Mcf)
                                      ---------      -----------

Proved reserves, Dec. 31, 1996         269,162        3,556,285
   Production                         ( 38,725)      (  571,101)
   Sales of minerals in place         (  8,673)      (   38,629)
   Extensions and discoveries           10,361            6,514
   Revisions of previous
      estimates                       ( 34,694)         377,552
                                       -------        ---------

Proved reserves, Dec. 31, 1997         197,431        3,330,621
   Production                         ( 30,203)      (  530,040)
   Sales of minerals in place         (  2,473)      (  248,611)
   Extensions and discoveries           16,858          262,256
   Revisions of previous
      estimates                       ( 32,096)         220,951
                                       -------        ---------

Proved reserves, Dec. 31,1998          149,517        3,035,177
   Production                         ( 27,794)      (  381,318)
   Extensions and discoveries               46           11,332
   Revisions of previous
      estimates                        229,882          105,148
                                       -------        ---------

Proved reserves, Dec. 31,1999          351,651        2,770,339
                                       =======        =========

PROVED DEVELOPED RESERVES:

   December 31, 1997                   197,297        3,315,478
                                       =======        =========
   December 31, 1998                   149,517        3,035,177
                                       =======        =========
   December 31, 1999                   351,522        2,766,466
                                       =======        =========



      Standardized  Measure of  Discounted  Future Net Cash Flows of Proved Oil
and Gas Reserves - Unaudited

      The following tables set forth each of the Partnerships'  estimated future
net cash flows as of December  31, 1999  relating to proved oil and gas reserves
based on the standardized measure as prescribed in SFAS No. 69:




                                      F-32
<PAGE>





                                        Partnership
                               ------------------------------
                                    I-D               I-E
                               ------------      -------------

Future cash inflows             $6,049,512        $34,501,519
Future production and
   development costs           ( 1,601,710)      ( 10,869,334)
                                 ---------         ----------

      Future net cash
        flows                   $4,447,802        $23,632,185

10% discount to
   reflect timing of
   cash flows                  ( 2,099,151)      ( 10,665,090)
                                 ---------         ----------

Standardized measure
   of discounted
   future net cash
   flows                        $2,348,651        $12,967,095
                                 =========         ==========


                                    I-F Partnership
                                    ---------------

Future cash inflows                  $14,269,566
Future production and
   development costs                (  4,996,858)
                                       ---------

      Future net cash
        flows                        $ 9,272,708

10% discount to
   reflect timing of
   cash flows                        ( 4,677,400)
                                       ---------

Standardized measure
   of discounted
   future net cash
   flow                              $ 4,595,308
                                       =========


The process of estimating oil and gas reserves is complex, requiring significant
subjective decisions in the evaluation of available geological, engineering, and
economic  data for each  reservoir.  The data for a given  reservoir  may change
substantially over time as a result of, among other things,




                                      F-33
<PAGE>




additional development activity, production history, and viability of production
under varying economic conditions;  consequently, it is reasonably possible that
material  revisions to existing reserve  estimates may occur in the near future.
Although  every  reasonable  effort  has been  made to ensure  that the  reserve
estimates reported herein represent the most accurate assessment  possible,  the
significance  of the  subjective  decisions  required and variances in available
data for various  reservoirs  make these  estimates  generally less precise than
other estimates  presented in connection with financial  statement  disclosures.
The  Partnerships'  reserves were  determined at December 31, 1999 using oil and
gas prices of approximately $22.75 per barrel and $2.24 per Mcf, respectively.



                                      F-34
<PAGE>



                          INDEX TO EXHIBITS
                          -----------------

Number     Description
------     -----------
*4.1       Amended  and  Restated   Agreement   and   Certificate   of  Limited
           Partnership  dated March 4, 1986 for Geodyne  Energy Income  Limited
           Partnership I-D.

*4.2       Amended  and  Restated   Agreement   and   Certificate   of  Limited
           Partnership  dated  September  10,  1986 for Geodyne  Energy  Income
           Limited Partnership I-E.

*4.3       Amended  and  Restated   Agreement   and   Certificate   of  Limited
           Partnership  dated  December  17,  1986 for  Geodyne  Energy  Income
           Limited Partnership I-F.

*4.4       First  Amendment  to  Amended  and  Restated  Certificate  of Limited
           Partnership and First Amendment to Amended and Restated Agreement and
           Certificate  of  Limited  Partnership  dated  February  24,  1993 for
           Geodyne Energy Income Limited Partnership I-D.

*4.5       First  Amendment  to  Amended  and  Restated  Certificate  of Limited
           Partnership and First Amendment to Amended and Restated Agreement and
           Certificate  of  Limited  Partnership  dated  February  24,  1993 for
           Geodyne Energy Income Limited Partnership I-E.

*4.6       First  Amendment  to  Amended  and  Restated  Certificate  of Limited
           Partnership and First Amendment to Amended and Restated Agreement and
           Certificate  of  Limited  Partnership  dated  February  24,  1993 for
           Geodyne Energy Income Limited Partnership I-F.

*4.7       Second Amendment to Amended and Restated Agreement and Certificate of
           Limited  Partnership  dated August 4, 1993 for Geodyne  Energy Income
           Limited Partnership I-D.

*4.8       Second Amendment to Amended and Restated Agreement and Certificate of
           Limited  Partnership  dated August 4, 1993 for Geodyne  Energy Income
           Limited Partnership I-E.

*4.9       Second Amendment to Amended and Restated Agreement and Certificate of
           Limited  Partnership  dated August 4, 1993 for Geodyne  Energy Income
           Limited Partnership I-F.

*4.10      Third Amendment to Amended and Restated  Agreement and Certificate of
           Limited  Partnership  dated July 1, 1996 for  Geodyne  Energy  Income
           Limited Partnership I-D.

*4.11      Third Amendment to Amended and Restated  Agreement and Certificate of
           Limited  Partnership  dated July 1, 1996 for  Geodyne  Energy  Income
           Limited Partnership I-E.



                                      F-35
<PAGE>




*4.12      Third Amendment to Amended and Restated  Agreement and Certificate of
           Limited  Partnership  dated July 1, 1996 for  Geodyne  Energy  Income
           Limited Partnership I-F.

*4.13      Fourth Amendment to Amended and Restated Agreement and Certificate of
           Limited Partnership dated December 23, 1999 for Geodyne Energy Income
           Limited Partnership I-D.

*4.14      Fourth Amendment to Amended and Restated Agreement and Certificate of
           Limited Partnership dated December 23, 1999 for Geodyne Energy Income
           Limited Partnership I-E.

*4.15      Fourth Amendment to Amended and Restated Agreement and Certificate of
           Limited Partnership dated December 23, 1999 for Geodyne Energy Income
           Limited Partnership I-F.

*10.1      Amended and Restated Agreement of Partnership dated March 4, 1986 for
           Geodyne Energy Income Production Partnership I-D.

*10.2      Amended and  Restated Agreement of  Partnership dated  September  10,
           1986 for Geodyne Energy Income Production Partnership I-E.

*10.3      Amended and Restated Agreement of Partnership dated December 17, 1986
           for Geodyne Energy Income Production Partnership I-F.

*10.4      First  Amendment  to Amended and Restated  Agreement  of  Partnership
           dated  February  26,  1993  for  Geodyne  Energy  Income   Production
           Partnership I-D.

*10.5      First  Amendment  to Amended and Restated  Agreement  of  Partnership
           dated  February  26,  1993  for  Geodyne  Energy  Income   Production
           Partnership I-E.

*10.6      First  Amendment  to Amended and Restated  Agreement  of  Partnership
           dated  February  26,  1993  for  Geodyne  Energy  Income   Production
           Partnership I-F.

*10.7      Second  Amendment  to Amended and Restated  Agreement of  Partnership
           dated July 1, 1996 for Geodyne Energy Income  Production  Partnership
           I-D.

*10.8      Second  Amendment  to Amended and Restated  Agreement of  Partnership
           dated July 1, 1996 for Geodyne Energy Income  Production  Partnership
           I-E.

*10.9      Second  Amendment  to Amended and Restated  Agreement of  Partnership
           dated July 1, 1996 for Geodyne Energy Income  Production  Partnership
           I-F.



                                      F-36
<PAGE>




*10.10     Third  Amendment  to Amended and Restated  Agreement of  Partnership
           dated  December  30,  1999  for  Geodyne  Energy  Income  Production
           Partnership I-D.

*10.11     Third  Amendment  to Amended and Restated  Agreement of  Partnership
           dated  December  30,  1999  for  Geodyne  Energy  Income  Production
           Partnership I-E.

*10.12     Third  Amendment  to Amended and Restated  Agreement of  Partnership
           dated  December  30,  1999  for  Geodyne  Energy  Income  Production
           Partnership I-F.

*23.1      Consent  of Ryder  Scott  Company,  L.P.  for Geodyne  Energy  Income
           Limited Partnership I-D.

*23.2      Consent  of Ryder  Scott  Company,  L.P.  for Geodyne  Energy  Income
           Limited Partnership I-E.

*23.3      Consent  of Ryder  Scott  Company,  L.P.  for Geodyne  Energy  Income
           Limited Partnership I-F.

*27.1      Financial  Data  Schedule  containing  summary  financial information
           extracted  from  Geodyne  Energy  Income  Limited  Partnership  I-D's
           financial statements as  of  December 31, 1999 and for the year ended
           December 31, 1999.

*27.2      Financial  Data  Schedule  containing  summary  financial information
           extracted  from  Geodyne  Energy  Income  Limited  Partnership  I-E's
           financial  statements  as of December 31, 1999 and for the year ended
           December 31, 1999.

*27.3      Financial  Data  Schedule  containing  summary  financial information
           extracted  from  Geodyne  Energy  Income  Limited  Partnership  I-F's
           financial  statements as of December 31, 1999 and for  the year ended
           December 31, 1999.

      All other Exhibits are omitted as inapplicable.

      ----------

      * Filed herewith.



                                      F-37