GEODYNE INSTITUTIONAL PENSION ENERGY INCOME P-1 LTD PTNSHIP
10-Q, 1999-11-03
CRUDE PETROLEUM & NATURAL GAS
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

               QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarter ended September 30, 1999

Commission File Number:

      P-1:  0-17800           P-3:  0-18306           P-5:  0-18637
      P-2:  0-17801           P-4:  0-18308           P-6:  0-18937

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-1 LIMITED PARTNERSHIP
     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-2 LIMITED PARTNERSHIP
     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-3
     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-4
     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-5
     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-6
    ---------------------------------------------------------------------
         (Exact name of Registrant as specified in its Articles)


                                                P-1 73-1330245
                                                P-2 73-1330625
              P-1 and P-2:                      P-3 73-1336573
                 Texas                          P-4 73-1341929
             P-3 through P-6:                   P-5 73-1353774
                Oklahoma                        P-6 73-1357375
      ----------------------------    -------------------------------
      (State or other jurisdiction    (I.R.S. Employer Identification
          of incorporation or                        Number)
           organization)


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

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

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 such  filing
requirements for the past 90 days.

                        Yes     X               No
                            ------                    ------




                                       1
<PAGE>




                          PART I. FINANCIAL INFORMATION


ITEM 1.  FINANCIAL STATEMENTS

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-1 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-1
                             COMBINED BALANCE SHEETS
                                   (Unaudited)


                                     ASSETS


                                             September 30,     December 31,
                                                  1999             1998
                                             -------------     ------------

CURRENT ASSETS:
   Cash and cash equivalents                  $  149,065        $   99,454
   Accounts receivable:
      Net Profits                                182,759           108,440
                                              ----------        ----------
        Total current assets                  $  331,824        $  207,894

NET PROFITS INTERESTS, net, utilizing
   the successful efforts method               1,012,869         1,164,893
                                              ----------        ----------
                                              $1,344,693        $1,372,787
                                              ==========        ==========

                           PARTNERS' CAPITAL (DEFICIT)


PARTNERS' CAPITAL (DEFICIT):
   General Partner                           ($   75,841)      ($   82,899)
   Limited Partners, issued and
      outstanding, 108,074 units               1,420,534         1,455,686
                                              ----------        ----------
        Total Partners' capital               $1,344,693        $1,372,787
                                              ----------        ----------
                                              $1,344,693        $1,372,787
                                              ==========        ==========


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


                                       2
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-1 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-1
                        COMBINED STATEMENTS OF OPERATIONS
             FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $229,741          $114,886
   Interest income                                 1,119             4,241
   Loss on sale of Net Profits
      Interests                                        -         (   1,791)
                                                --------          --------
                                                $230,860          $117,336

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $ 43,410          $ 48,122
   General and administrative
      (Note 2)                                    29,901            30,953
                                                --------          --------
                                                $ 73,311          $ 79,075
                                                --------          --------

NET INCOME                                      $157,549          $ 38,261
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $ 19,550          $  7,733
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $137,999          $ 30,528
                                                ========          ========
NET INCOME per unit                             $   1.28          $    .28
                                                ========          ========
UNITS OUTSTANDING                                108,074           108,074
                                                ========          ========


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

                                       3
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-1 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-1
                        COMBINED STATEMENTS OF OPERATIONS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $585,395          $  537,453
   Interest income                                 3,063              10,466
   Gain on sale of Net Profits
      Interests                                      698             474,007
                                                --------          ----------
                                                $589,156          $1,021,926

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $160,727          $  161,970
   General and administrative
      (Note 2)                                    98,421              98,174
                                                --------          ----------
                                                $259,148          $  260,144
                                                --------          ----------

NET INCOME                                      $330,008          $  761,782
                                                ========          ==========
GENERAL PARTNER - NET INCOME                    $ 47,160          $   48,152
                                                ========          ==========
LIMITED PARTNERS - NET INCOME                   $282,848          $  713,630
                                                ========          ==========
NET INCOME per unit                             $   2.62          $     6.60
                                                ========          ==========
UNITS OUTSTANDING                                108,074             108,074
                                                ========          ==========


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

                                       4
<PAGE>
     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-1 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-1
                        COMBINED STATEMENTS OF CASH FLOWS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)

                                                 1999              1998
                                              -----------       -----------
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                   $330,008        $  761,782
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
      Depletion of Net Profits
        Interests                                160,727           161,970
      Gain on sale of Net Profits
        Interests                              (     698)      (   474,007)
      (Increase) decrease in accounts
        receivable - Net Profits               (  74,319)           72,647
                                                --------        ----------
Net cash provided by operating
   activities                                   $415,718        $  522,392
                                                --------        ----------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Capital expenditures                        ($ 10,863)      ($   13,756)
   Proceeds from sale of Net Profits
      Interests                                    2,858           519,045
                                                --------        ----------
Net cash provided (used) by
   investing activities                        ($  8,005)       $  505,289
                                                --------        ----------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Cash distributions                          ($358,102)      ($1,396,984)
                                                --------        ----------
Net cash used by financing activities          ($358,102)      ($1,396,984)
                                                --------        ----------

NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                             $ 49,611       ($  369,303)

CASH AND CASH EQUIVALENTS AT
   BEGINNING OF PERIOD                            99,454           503,622
                                                --------        ----------
CASH AND CASH EQUIVALENTS AT
   END OF PERIOD                                $149,065        $  134,319
                                                ========        ==========


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


                                       5
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-2 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-2
                             COMBINED BALANCE SHEETS
                                   (Unaudited)


                                     ASSETS


                                             September 30,     December 31,
                                                 1999              1998
                                             -------------     ------------

CURRENT ASSETS:
   Cash and cash equivalents                   $  125,109       $   78,435
   Accounts receivable:
      Net Profits                                 150,770           92,746
                                               ----------       ----------
        Total current assets                   $  275,879       $  171,181

NET PROFITS INTERESTS, net, utilizing
   the successful efforts method                  876,962        1,001,498
                                               ----------       ----------
                                               $1,152,841       $1,172,679
                                               ==========       ==========

                           PARTNERS' CAPITAL (DEFICIT)


PARTNERS' CAPITAL (DEFICIT):
   General Partner                            ($   62,710)     ($   70,704)
   Limited Partners, issued and
      outstanding, 90,094 units                 1,215,551        1,243,383
                                               ----------       ----------
        Total Partners' capital                $1,152,841       $1,172,679
                                               ----------       ----------
                                               $1,152,841       $1,172,679
                                               ==========       ==========

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


                                       6
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-2 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-2
                        COMBINED STATEMENTS OF OPERATIONS
             FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                 $173,641           $89,003
   Interest income                                  942             2,978
   Loss on sale of Net Profits
      Interests                                       -          (  1,378)
                                               --------           -------
                                               $174,583           $90,603

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                $ 35,812           $37,598
   General and administrative
      (Note 2)                                   24,932            25,805
                                               --------           -------
                                               $ 60,744           $63,403
                                               --------           -------

NET INCOME                                     $113,839           $27,200
                                               ========           =======
GENERAL PARTNER - NET INCOME                   $  7,078           $ 2,715
                                               ========           =======
LIMITED PARTNERS - NET INCOME                  $106,761           $24,485
                                               ========           =======
NET INCOME per unit                            $   1.18           $   .27
                                               ========           =======
UNITS OUTSTANDING                                90,094            90,094
                                               ========           =======


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


                                       7
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-2 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-2
                        COMBINED STATEMENTS OF OPERATIONS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                 $455,894           $410,191
   Interest income                                2,458              7,625
   Gain on sale of Net Profits
      Interests                                     652            253,637
                                               --------           --------
                                               $459,004           $671,453

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                $131,364           $125,373
   General and administrative
      (Note 2)                                   82,061             81,952
                                               --------           --------
                                               $213,425           $207,325
                                               --------           --------

NET INCOME                                     $245,579           $464,128
                                               ========           ========
GENERAL PARTNER - NET INCOME                   $ 17,411           $ 27,840
                                               ========           ========
LIMITED PARTNERS - NET INCOME                  $228,168           $436,288
                                               ========           ========
NET INCOME per unit                            $   2.53           $   4.84
                                               ========           ========
UNITS OUTSTANDING                                90,094             90,094
                                               ========           ========

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


                                       8
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-2 LIMITED PARTNERSHIP
                           GEODYNE NPI PARTNERSHIP P-2
                        COMBINED STATEMENTS OF CASH FLOWS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


                                                  1999             1998
                                                --------        ----------
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                   $245,579        $  464,128
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
      Depletion of Net Profits
        Interests                                131,364           125,373
      Gain on sale of Net Profits
        Interests                              (     652)      (   253,637)
      (Increase) decrease in accounts
        receivable - Net Profits               (  58,024)           62,728
                                                --------        ----------
Net cash provided by operating
   activities                                   $318,267        $  398,592
                                                --------        ----------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Capital expenditures                        ($  8,846)      ($   17,394)
   Proceeds from sale of Net Profits
      Interests                                    2,670           359,875
                                                --------        ----------
Net cash provided (used) by
   investing activities                        ($  6,176)       $  342,481
                                                --------        ----------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Cash distributions                          ($265,417)      ($1,005,330)
                                                --------        ----------
Net cash used by financing activities          ($265,417)      ($1,005,330)
                                                --------        ----------

NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                             $ 46,674       ($  264,257)

CASH AND CASH EQUIVALENTS AT
   BEGINNING OF PERIOD                            78,435           369,191
                                                --------        ----------
CASH AND CASH EQUIVALENTS AT
   END OF PERIOD                                $125,109        $  104,934
                                                ========        ==========


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


                                       9
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-3
                           GEODYNE NPI PARTNERSHIP P-3
                             COMBINED BALANCE SHEETS
                                   (Unaudited)

                                     ASSETS


                                             September 30,     December 31,
                                                 1999              1998
                                             -------------     ------------

CURRENT ASSETS:
   Cash and cash equivalents                  $  234,108        $  146,246
   Accounts receivable:
      Net Profits                                279,911           170,389
                                              ----------        ----------
        Total current assets                  $  514,019        $  316,635

NET PROFITS INTERESTS, net, utilizing
   the successful efforts method               1,633,861         1,866,716
                                              ----------        ----------
                                              $2,147,880        $2,183,351
                                              ==========        ==========

                           PARTNERS' CAPITAL (DEFICIT)


PARTNERS' CAPITAL (DEFICIT):
   General Partner                           ($  118,098)      ($  132,995)
   Limited Partners, issued and
      outstanding, 169,637 units               2,265,978         2,316,346
                                              ----------        ----------
        Total Partners' capital               $2,147,880        $2,183,351
                                              ----------        ----------
                                              $2,147,880        $2,183,351
                                              ==========        ==========

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


                                       10
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-3
                           GEODYNE NPI PARTNERSHIP P-3
                        COMBINED STATEMENTS OF OPERATIONS
             FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $322,339          $166,755
   Interest income                                 1,866             5,626
   Loss on sale of Net Profits
      Interests                                        -         (   2,558)
                                                --------          --------
                                                $324,205          $169,823

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $ 66,778          $ 70,090
   General and administrative
      (Note 2)                                    46,938            48,580
                                                --------          --------
                                                $113,716          $118,670
                                                --------          --------

NET INCOME                                      $210,489          $ 51,153
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $ 13,103          $  5,080
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $197,386          $ 46,073
                                                ========          ========
NET INCOME per unit                             $   1.16          $    .27
                                                ========          ========
UNITS OUTSTANDING                                169,637           169,637
                                                ========          ========

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


                                       11
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-3
                           GEODYNE NPI PARTNERSHIP P-3
                        COMBINED STATEMENTS OF OPERATIONS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $852,103        $  764,416
   Interest income                                 4,856            14,498
   Gain on sale of Net Profits
      Interests                                    1,252           603,091
                                                --------        ----------
                                                $858,211        $1,382,005

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $245,727        $  232,939
   General and administrative
      (Note 2)                                   154,359           154,282
                                                --------        ----------
                                                $400,086        $  387,221
                                                --------        ----------

NET INCOME                                      $458,125        $  994,784
                                                ========        ==========
GENERAL PARTNER - NET INCOME                    $ 32,493        $   58,332
                                                ========        ==========
LIMITED PARTNERS - NET INCOME                   $425,632        $  936,452
                                                ========        ==========
NET INCOME per unit                             $   2.51        $     5.52
                                                ========        ==========
UNITS OUTSTANDING                                169,637           169,637
                                                ========        ==========


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


                                       12
<PAGE>

      GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-3
                           GEODYNE NPI PARTNERSHIP P-3
                        COMBINED STATEMENTS OF CASH FLOWS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


                                                  1999             1998
                                                ---------       ----------
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                   $458,125        $  994,784
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
      Depletion of Net Profits
        Interests                                245,727           232,939
      Gain on sale of Net Profits
        Interests                              (   1,252)      (   603,091)
      (Increase) decrease in accounts
        receivable - Net Profits               ( 109,522)          116,566
                                                --------        ----------
Net cash provided by operating
   activities                                   $593,078        $  741,198
                                                --------        ----------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Capital expenditures                        ($ 16,469)      ($   33,084)
   Proceeds from sale of Net Profits
      Interests                                    4,849           664,645
                                                --------        ----------
Net cash provided (used) by
   investing activities                        ($ 11,620)       $  631,561
                                                --------        ----------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Cash distributions                          ($493,596)      ($1,862,281)
                                                --------        ----------
Net cash used by financing activities          ($493,596)      ($1,862,281)
                                                --------        ----------

NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                             $ 87,862       ($  489,522)

CASH AND CASH EQUIVALENTS AT
   BEGINNING OF PERIOD                           146,246           685,628
                                                --------        ----------
CASH AND CASH EQUIVALENTS AT
   END OF PERIOD                                $234,108        $  196,106
                                                ========        ==========

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


                                       13
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-4
                           GEODYNE NPI PARTNERSHIP P-4
                             COMBINED BALANCE SHEETS
                                   (Unaudited)

                                     ASSETS


                                             September 30,     December 31,
                                                 1999              1998
                                             ------------      ------------

CURRENT ASSETS:
   Cash and cash equivalents                  $  170,976        $  101,652
   Accounts receivable:
      Net Profits                                271,963           209,218
                                              ----------        ----------
        Total current assets                  $  442,939        $  310,870

NET PROFITS INTERESTS, net, utilizing
   the successful efforts method                 929,123         1,092,574
                                              ----------        ----------
                                              $1,372,062        $1,403,444
                                              ==========        ==========

                           PARTNERS' CAPITAL (DEFICIT)


PARTNERS' CAPITAL (DEFICIT):
   General Partner                           ($   84,564)      ($   93,853)
   Limited Partners, issued and
      outstanding, 126,306 units               1,456,626         1,497,297
                                              ----------        ----------
        Total Partners' capital               $1,372,062        $1,403,444
                                              ----------        ----------
                                              $1,372,062        $1,403,444
                                              ==========        ==========

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


                                       14
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-4
                           GEODYNE NPI PARTNERSHIP P-4
                        COMBINED STATEMENTS OF OPERATIONS
             FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $215,501          $138,857
   Interest income                                 1,321             1,714
   Loss on sale of Net Profits
      Interests                                        -         (     238)
                                                --------          --------
                                                $216,822          $140,333

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $ 50,628          $ 54,446
   General and administrative
      (Note 2)                                    34,958            36,110
                                                --------          --------
                                                $ 85,586          $ 90,556
                                                --------          --------

NET INCOME                                      $131,236          $ 49,777
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $  8,521          $  4,581
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $122,715          $ 45,196
                                                ========          ========
NET INCOME per unit                             $    .97          $    .36
                                                ========          ========
UNITS OUTSTANDING                                126,306           126,306
                                                ========          ========

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



                                       15
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-4
                           GEODYNE NPI PARTNERSHIP P-4
                        COMBINED STATEMENTS OF OPERATIONS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $546,129          $557,503
   Interest income                                 3,190             6,871
   Gain on sale of Net
      Profits Interests                              410            12,014
                                                --------          --------
                                                $549,729          $576,388

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $164,883          $185,990
   General and administrative
      (Note 2)                                   114,567           114,784
                                                --------          --------
                                                $279,450          $300,774
                                                --------          --------

NET INCOME                                      $270,279          $275,614
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $ 19,950          $ 20,877
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $250,329          $254,737
                                                ========          ========
NET INCOME per unit                             $   1.98          $   2.02
                                                ========          ========
UNITS OUTSTANDING                                126,306           126,306
                                                ========          ========

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



                                       16
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-4
                           GEODYNE NPI PARTNERSHIP P-4
                        COMBINED STATEMENTS OF CASH FLOWS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


                                                  1999             1998
                                                ---------       ---------
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                   $270,279        $275,614
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
      Depletion of Net Profits
        Interests                                164,883         185,990
      Gain on sale of Net Profits
        Interests                              (     410)      (  12,014)
      (Increase) decrease in accounts
        receivable - Net Profits               (  62,745)        127,613
                                                --------        --------
Net cash provided by operating
   activities                                   $372,007        $577,203
                                                --------        --------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Capital expenditures                        ($  6,102)      ($  4,726)
   Proceeds from sale of Net Profits
      Interests                                    5,080          14,895
                                                --------        --------
Net cash provided (used) by investing
   activities                                  ($  1,022)       $ 10,169
                                                --------        --------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Cash distributions                          ($301,661)      ($666,902)
                                                --------        --------
Net cash used by financing activities          ($301,661)      ($666,902)
                                                --------        --------

NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                             $ 69,324       ($ 79,530)

CASH AND CASH EQUIVALENTS AT
   BEGINNING OF PERIOD                           101,652         243,903
                                                --------        --------
CASH AND CASH EQUIVALENTS AT
   END OF PERIOD                                $170,976        $164,373
                                                ========        ========


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


                                       17
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-5
                           GEODYNE NPI PARTNERSHIP P-5
                             COMBINED BALANCE SHEETS
                                   (Unaudited)

                                     ASSETS


                                             September 30,     December 31,
                                                 1999              1998
                                             -------------     ------------

CURRENT ASSETS:
   Cash and cash equivalents                   $  187,309       $  166,487
   Accounts receivable:
      Net Profits                                 140,090           99,823
                                               ----------       ----------
        Total current assets                   $  327,399       $  266,310

NET PROFITS INTERESTS, net, utilizing
   the successful efforts method                  847,189          991,179
                                               ----------       ----------
                                               $1,174,588       $1,257,489
                                               ==========       ==========

                           PARTNERS' CAPITAL (DEFICIT)


PARTNERS' CAPITAL (DEFICIT):
   General Partner                            ($   70,578)     ($   79,248)
   Limited Partners, issued and
      outstanding, 118,449 units                1,245,166        1,336,737
                                               ----------       ----------
        Total Partners' capital                $1,174,588       $1,257,489
                                               ----------       ----------
                                               $1,174,588       $1,257,489
                                               ==========       ==========


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


                                       18
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-5
                           GEODYNE NPI PARTNERSHIP P-5
                        COMBINED STATEMENTS OF OPERATIONS
             FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)



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

REVENUES:
   Net Profits                                  $230,347          $189,220
   Interest income                                 1,554             3,102
   Gain on sale of Net Profits
      Interests                                        -               803
                                                --------          --------
                                                $231,901          $193,125

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $ 49,457          $ 65,403
   General and administrative
      (Note 2)                                    32,777            33,873
                                                --------          --------
                                                $ 82,234          $ 99,276
                                                --------          --------

NET INCOME                                      $149,667          $ 93,849
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $  9,384          $  7,154
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $140,283          $ 86,695
                                                ========          ========
NET INCOME per unit                             $   1.19          $    .73
                                                ========          ========
UNITS OUTSTANDING                                118,449           118,449
                                                ========          ========

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


                                       19
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-5
                           GEODYNE NPI PARTNERSHIP P-5
                        COMBINED STATEMENTS OF OPERATIONS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)



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

REVENUES:
   Net Profits                                  $574,192          $619,716
   Interest income                                 4,167             8,301
   Gain on sale of Net Profits
      Interests                                        -           340,817
                                                --------          --------
                                                $578,359          $968,834

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $154,448          $185,027
   General and administrative
      (Note 2)                                   107,702           107,554
                                                --------          --------
                                                $262,150          $292,581
                                                --------          --------

NET INCOME                                      $316,209          $676,253
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $ 21,780          $ 40,799
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $294,429          $635,454
                                                ========          ========
NET INCOME per unit                             $   2.49          $   5.36
                                                ========          ========
UNITS OUTSTANDING                                118,449           118,449
                                                ========          ========


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


                                       20
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-5
                           GEODYNE NPI PARTNERSHIP P-5
                        COMBINED STATEMENTS OF CASH FLOWS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


                                                  1999             1998
                                                ---------       ---------
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                   $316,209        $676,253
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
      Depletion of Net Profits
        Interests                                154,448         185,027
      Gain on sale of Net Profits
        Interests                                      -       ( 340,817)
      (Increase) decrease in accounts
        receivable - Net Profits               (  40,267)         57,895
                                                --------        --------
Net cash provided by operating
   activities                                   $430,390        $578,358
                                                --------        --------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Capital expenditures                        ($ 10,458)      ($ 37,045)
   Proceeds from sale of Net Profits
      Interests                                        -         368,485
                                                --------        --------
Net cash provided (used) by investing
   activities                                  ($ 10,458)       $331,440
                                                --------        --------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Cash distributions                          ($399,110)      ($934,742)
                                                --------        --------
Net cash used by financing activities          ($399,110)      ($934,742)
                                                --------        --------

NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                             $ 20,822       ($ 24,944)

CASH AND CASH EQUIVALENTS AT
   BEGINNING OF PERIOD                           166,487         228,750
                                                --------        --------
CASH AND CASH EQUIVALENTS AT
   END OF PERIOD                                $187,309        $203,806
                                                ========        ========

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


                                       21
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-6
                           GEODYNE NPI PARTNERSHIP P-6
                             COMBINED BALANCE SHEETS
                                   (Unaudited)

                                     ASSETS


                                             September 30,     December 31,
                                                 1999              1998
                                             -------------     ------------

CURRENT ASSETS:
   Cash and cash equivalents                   $  311,145       $  300,324
   Accounts receivable:
      Net Profits                                 268,559          145,612
                                               ----------       ----------
        Total current assets                   $  579,704       $  445,936

NET PROFITS INTERESTS, net, utilizing
   the successful efforts method                1,769,587        2,065,846
                                               ----------       ----------
                                               $2,349,291       $2,511,782
                                               ==========       ==========

                           PARTNERS' CAPITAL (DEFICIT)


PARTNERS' CAPITAL (DEFICIT):
   General Partner                            ($   88,204)     ($  106,642)
   Limited Partners, issued and
      outstanding, 143,041 units                2,437,495        2,618,424
                                               ----------       ----------
        Total Partners' capital                $2,349,291       $2,511,782
                                               ----------       ----------
                                               $2,349,291       $2,511,782
                                               ==========       ==========


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


                                       22
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-6
                           GEODYNE NPI PARTNERSHIP P-6
                        COMBINED STATEMENTS OF OPERATIONS
             FOR THE THREE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $440,245          $256,471
   Interest income                                 2,362             2,925
   Loss on sale of Net Profits
      Interests                                        -         (   1,421)
                                                --------          --------
                                                $442,607          $257,975

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $101,854          $110,826
   General and administrative
      (Note 2)                                    39,578            40,901
                                                --------          --------
                                                $141,432          $151,727
                                                --------          --------

NET INCOME                                      $301,175          $106,248
                                                ========          ========
GENERAL PARTNER - NET INCOME                    $ 19,015          $  9,600
                                                ========          ========
LIMITED PARTNERS - NET INCOME                   $282,160          $ 96,648
                                                ========          ========
NET INCOME per unit                             $   1.97          $    .67
                                                ========          ========
UNITS OUTSTANDING                                143,041           143,041
                                                ========          ========


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


                                       23
<PAGE>

     GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-6
                           GEODYNE NPI PARTNERSHIP P-6
                        COMBINED STATEMENTS OF OPERATIONS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


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

REVENUES:
   Net Profits                                  $  996,224        $  873,844
   Interest income                                   6,497            10,360
   Gain on sale of Net Profits
      Interests                                          -           133,104
                                                ----------        ----------
                                                $1,002,721        $1,017,308

COSTS AND EXPENSES:
   Depletion of Net Profits
      Interests                                 $  306,049        $  309,288
   General and administrative
      (Note 2)                                     130,369           130,159
                                                ----------        ----------
                                                $  436,418        $  439,447
                                                ----------        ----------

NET INCOME                                      $  566,303        $  577,861
                                                ==========        ==========
GENERAL PARTNER - NET INCOME                    $   40,232        $   40,747
                                                ==========        ==========
LIMITED PARTNERS - NET INCOME                   $  526,071        $  537,114
                                                ==========        ==========
NET INCOME per unit                             $     3.68        $     3.75
                                                ==========        ==========
UNITS OUTSTANDING                                  143,041           143,041
                                                ==========        ==========


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


                                       24
<PAGE>

      GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIP P-6
                           GEODYNE NPI PARTNERSHIP P-6
                        COMBINED STATEMENTS OF CASH FLOWS
              FOR THE NINE MONTHS ENDED SEPTEMBER 30, 1999 AND 1998
                                   (Unaudited)


                                                1999               1998
                                              ---------        -----------
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income                                 $566,303          $  577,861
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
      Depletion of Net Profits
        Interests                              306,049             309,288
      Gain on sale of Net Profits
        Interests                                    -         (   133,104)
      (Increase) decrease in accounts
        receivable - Net Profits             ( 122,947)            163,102
                                              --------          ----------
Net cash provided by operating
   activities                                 $749,405          $  917,147
                                              --------          ----------

CASH FLOWS FROM INVESTING ACTIVITIES:
   Capital expenditures                      ($ 11,281)        ($   41,351)
   Proceeds from sale of Net Profits
      Interests                                  1,491             147,747
                                              --------          ----------
Net cash provided (used) by
   investing activities                      ($  9,790)         $  106,396
                                              --------          ----------

CASH FLOWS FROM FINANCING ACTIVITIES:
   Cash distributions                        ($728,794)        ($1,132,755)
                                              --------          ----------
Net cash used by financing activities        ($728,794)        ($1,132,755)
                                              --------          ----------

NET INCREASE (DECREASE) IN CASH AND
   CASH EQUIVALENTS                           $ 10,821         ($  109,212)

CASH AND CASH EQUIVALENTS AT
   BEGINNING OF PERIOD                         300,324             362,957
                                              --------          ----------
CASH AND CASH EQUIVALENTS AT
   END OF PERIOD                              $311,145          $  253,745
                                              ========          ==========


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



                                       25
<PAGE>

       GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME LIMITED PARTNERSHIPS
             CONDENSED NOTES TO THE COMBINED FINANCIAL STATEMENTS
                               SEPTEMBER 30, 1999
                                   (Unaudited)


1.    ACCOUNTING POLICIES
      -------------------

      The combined balance sheets as of September 30, 1999,  combined statements
      of operations  for the three and nine months ended  September 30, 1999 and
      1998,  and  combined  statements  of cash flows for the nine months  ended
      September 30, 1999 and 1998 have been prepared by Geodyne Resources, Inc.,
      the General  Partner of the Geodyne  Institutional/Pension  Energy  Income
      Limited Partnerships, without audit. Each limited partnership is a general
      partner in the related Geodyne NPI Partnership (the "NPI Partnerships") in
      which Geodyne  Resources,  Inc.  serves as the managing  partner.  For the
      purposes of these financial  statements,  the general partner and managing
      partner are  collectively  referred to as the  "General  Partner"  and the
      limited partnerships and NPI Partnerships are collectively  referred to as
      the "Partnerships".  In the opinion of management the financial statements
      referred to above include all necessary adjustments,  consisting of normal
      recurring  adjustments,  to present fairly the combined financial position
      at September 30, 1999,  the combined  results of operations  for the three
      and nine months ended  September 30, 1999 and 1998,  and the combined cash
      flows for the nine months ended September 30, 1999 and 1998.

      Information  and  footnote  disclosures  normally  included  in  financial
      statements  prepared in  accordance  with  generally  accepted  accounting
      principles  have been  condensed  or  omitted.  The  accompanying  interim
      financial  statements should be read in conjunction with the Partnerships'
      Annual Report on Form 10-K filed for the year ended December 31, 1998. The
      results of  operations  for the period  ended  September  30, 1999 are not
      necessarily indicative of the results to be expected for the full year.

      As used in these financial  statements,  the Partnerships' net profits and
      royalty  interests in oil and gas sales are  referred to as "Net  Profits"
      and the  Partnerships'  net profits and royalty  interests  in oil and gas
      properties  are  referred  to as  "Net  Profits  Interests".  The  working
      interests from which the  Partnerships'  Net Profits  Interests are carved
      are referred to as "Working Interests".

      The Limited  Partners' net income or loss per unit is based upon each $100
      initial capital contribution.


                                       26
<PAGE>

      NET PROFITS INTERESTS
      ---------------------

      The  Partnerships  follow the successful  efforts method of accounting for
      their Net Profits Interests.  Under the successful efforts method, the NPI
      Partnerships  capitalize all acquisition costs. 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 NPI Partnership of Net Profits Interests  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 prior to
      their transfer to the Partnerships. Impairment of Net Profits Interests is
      recognized based upon an individual property assessment.

      Depletion  of the  costs  of Net  Profits  Interests  is  computed  on the
      unit-of-production  method. The Partnerships'  calculation of depletion of
      its Net Profits Interests includes estimated dismantlement and abandonment
      costs, net of estimated salvage value.

      The  Partnerships  do  not  directly  bear  capital  costs.  However,  the
      Partnerships  indirectly bear certain capital costs incurred by the owners
      of the  Working  Interests  to the extent such  capital  costs are charged
      against the applicable oil and gas revenues in calculating the Net Profits
      payable to the Partnerships.  For financial  reporting purposes only, such
      capital costs are reported as capital  expenditures  in the  Partnerships'
      Statements of Cash Flows.


2.    TRANSACTIONS WITH RELATED PARTIES
      ---------------------------------

      The Partnerships'  partnership agreements provide for reimbursement to the
      General Partner for all direct general and administrative expenses and for
      the general and  administrative  overhead  applicable to the  Partnerships
      based on an allocation of actual costs  incurred.  During the three months
      ended  September 30, 1999 the following  payments were made to the General
      Partner or its affiliates by the Partnerships:


                                       27
<PAGE>

                                Direct General           Administrative
            Partnership        and Administrative           Overhead
            -----------        -------------------       ---------------
               P-1                   $1,461                  $28,440
               P-2                    1,223                   23,709
               P-3                    2,298                   44,640
               P-4                    1,718                   33,240
               P-5                    1,607                   31,170
               P-6                    1,937                   37,641


      During the nine months ended  September  30, 1999 the  following  payments
      were made to the General Partner or its affiliates by the Partnerships:

                                Direct General           Administrative
            Partnership        and Administrative           Overhead
            -----------        -------------------       ---------------
               P-1                  $13,101                  $ 85,320
               P-2                   10,934                    71,127
               P-3                   20,439                   133,920
               P-4                   14,847                    99,720
               P-5                   14,192                    93,510
               P-6                   17,446                   112,923

      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 their activities.



                                       28
<PAGE>

ITEM 2.     MANAGEMENT'S  DISCUSSION  AND ANALYSIS OF FINANCIAL  CONDITION AND
            RESULTS OF OPERATIONS


USE OF FORWARD-LOOKING STATEMENTS AND ESTIMATES
- -----------------------------------------------

      This Quarterly 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
      Quarterly 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, and otherwise indicated.


GENERAL
- -------

      The  Partnerships  are engaged in the  business of  acquiring  Net Profits
      Interests in producing oil and gas properties  located in the  continental
      United States.  In general,  a Partnership  acquired passive  interests in
      producing  properties and does not directly engage in development drilling
      or  enhanced  recovery  projects.  Therefore,  the  economic  life of each
      limited  partnership,  and its related NPI Partnership,  is limited to the
      period  of  time  required  to  fully  produce  its  acquired  oil and gas
      reserves. A Net Profits Interest entitles the Partnerships to a portion of
      the  oil  and  gas  sales  less  operating  and  production  expenses  and
      development costs generated by the owner of the


                                       29
<PAGE>

      underlying  Working  Interests.  The net  proceeds  from the oil and gas
      operations  are  distributed  to the  Limited  Partners  and the General
      Partner in accordance  with the terms of the  Partnerships'  partnership
      agreements.


LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------

      The Partnerships began operations and investors were assigned their rights
      as Limited Partners,  having made capital contributions in the amounts and
      on the dates set forth below:

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

                 P-1            October 25, 1988           $10,807,400
                 P-2            February 9, 1989             9,009,400
                 P-3            May 10, 1989                16,963,700
                 P-4            November 21, 1989           12,630,600
                 P-5            February 27, 1990           11,844,900
                 P-6            September 5, 1990           14,304,100

      In general,  the amount of funds  available for  acquisition  of producing
      properties was equal to the capital contributions of the Limited Partners,
      less 15% for sales  commissions and  organization and management fees. All
      of the Partnerships have fully invested their capital contributions.

      Net proceeds from the  Partnerships'  Net Profits Interests less necessary
      operating  capital are distributed to the Limited  Partners on a quarterly
      basis.  Revenues and net proceeds of a Partnership  are largely  dependent
      upon the volumes of oil and gas sold and the prices  received for such oil
      and gas. While the General  Partner cannot predict future pricing  trends,
      it believes the working capital available as of September 30, 1999 and the
      net revenue  generated  from future  operations  will  provide  sufficient
      working capital to meet current and future obligations.



                                       30
<PAGE>

RESULTS OF OPERATIONS
- ---------------------

      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.  Due to the  volatility  of oil and gas  prices,
      forecasting  future prices is subject to great uncertainty and inaccuracy.
      Substantially  all of the Partnerships' gas reserves are being sold in 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. Such spot market sales are generally short-term in nature and
      are dependent upon the obtaining of  transportation  services  provided by
      pipelines. In addition, crude oil prices in 1998 and early 1999 were at or
      near their  lowest  level in the past decade due  primarily  to the global
      surplus of crude oil. Oil prices have since  rebounded  primarily due to a
      decrease in the global oil surplus as a result of production  curtailments
      by several  major oil producing  nations.  Management is unable to predict
      whether  future oil and gas prices will (i) stabilize,  (ii) increase,  or
      (iii) decrease.

      P-1 PARTNERSHIP

      THREE MONTHS ENDED  SEPTEMBER  30, 1999 COMPARED TO THE THREE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                             Three Months Ended September 30,
                                             --------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $229,741         $114,886
      Barrels produced                               5,492            5,573
      Mcf produced                                  72,924           73,501
      Average price/Bbl                           $  21.48         $  11.14
      Average price/Mcf                           $   2.30         $   1.46

      As shown in the table above,  total Net Profits increased  $114,855 (100%)
      for the three  months  ended  September  30, 1999 as compared to the three
      months ended September 30, 1998. Of this increase,  approximately  $57,000
      and $61,000, respectively, were related to increases in the average prices
      of oil and gas sold.  Volumes of oil and gas sold decreased 81 barrels and
      577 Mcf,  respectively,  for the three months ended  September 30, 1999 as
      compared to the three months ended September 30, 1998. Average oil and gas
      prices increased to $21.48 per barrel and $2.30 per Mcf, respectively, for
      the three months ended September 30, 1999 from $11.14 per barrel and $1.46
      per Mcf, respectively, for the three months ended September 30, 1998.

      Depletion of Net Profits  Interests  decreased $4,712 (9.8%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 18.9% for the three months ended  September 30, 1999 from 41.9% for the
      three  months  ended  September  30, 1998.  This  percentage  decrease was
      primarily due to the increases in the average prices of oil and gas sold.

      General and administrative  expenses decreased $1,052 (3.4%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased  to 13.0% for the three  months  ended  September  30, 1999 from
      26.9% for the three  months ended  September  30,  1998.  This  percentage
      decrease was primarily due to the increase in Net Profits.

      NINE MONTHS  ENDED  SEPTEMBER  30, 1999  COMPARED TO THE NINE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                               Nine Months Ended September 30,
                                               -------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $585,395         $537,453
      Barrels produced                              19,288           20,530
      Mcf produced                                 276,290          236,755
      Average price/Bbl                           $  15.00         $  14.01
      Average price/Mcf                           $   1.81         $   1.80

      As shown in the table above,  total Net Profits  increased  $47,942 (8.9%)
      for the nine  months  ended  September  30,  1999 as  compared to the nine
      months ended September 30, 1998. Of this increase,  approximately  $71,000
      was  related  to an  increase  in  volumes  of gas sold and  approximately
      $19,000 was related to an increase in the average price of oil sold. These
      increases were partially offset by decreases of (i) approximately  $17,000
      related  to a  decrease  in  volumes  of oil sold  and (ii)  approximately
      $27,000  related to an increase  in  production  expenses  incurred by the
      owners of the  Working  Interests.  Volumes  of oil sold  decreased  1,242
      barrels while volumes of gas sold increased 39,535 Mcf for the nine months
      ended  September  30, 1999 as compared to the nine months ended  September
      30, 1998.  The increase in volumes of gas sold was  primarily due to (i) a
      positive prior period volume  adjustment  made by the operator  during the
      nine months ended  September 30, 1999 due to the payout of one significant
      well and (ii) the  successful  recompletion  of one well during the fourth
      quarter of 1998. The increase in production  expenses was primarily due to
      (i) a change in the timing of payment of ad valorem taxes, (ii) workover


                                       31
<PAGE>

      expenses  incurred on two  significant  wells during the nine months ended
      September 30, 1999 in order to improve the recovery of reserves, and (iii)
      lease  operating  expenses paid during the nine months ended September 30,
      1999 related to prior  periods on the well which reached  payout.  Average
      oil and gas  prices  increased  to $15.00  per  barrel  and $1.81 per Mcf,
      respectively, for the nine months ended September 30, 1999 from $14.01 per
      barrel  and  $1.80  per  Mcf,  respectively,  for the  nine  months  ended
      September 30, 1998.

      The P-1  Partnership  sold certain Net Profits  Interests  during the nine
      months ended  September 30, 1999 and recognized a $698 gain on such sales.
      Sales of Net Profits  Interests during the nine months ended September 30,
      1998  resulted  in  the  P-1  Partnership  recognizing  similar  gains  of
      $474,007.

      Depletion of Net Profits  Interests  decreased  $1,243 (0.8%) for the nine
      months  ended  September  30, 1999 as  compared  to the nine months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 27.5% for the nine months ended  September  30, 1999 from 30.1% for the
      nine months ended September 30, 1998.

      General and administrative  expenses remained  relatively constant for the
      nine months ended  September 30, 1999 as compared to the nine months ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased to 16.8% for the nine months ended September 30, 1999 from 18.3%
      for the nine months ended September 30, 1998.

      Cumulative cash  distributions to the Limited  Partners through  September
      30,  1999 were  $11,800,558  or 109.19% of the Limited  Partners'  capital
      contributions.

      P-2 PARTNERSHIP

      THREE MONTHS ENDED  SEPTEMBER  30, 1999 COMPARED TO THE THREE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                             Three Months Ended September 30,
                                              -------------------------------
                                                   1999             1998
                                                 --------          -------
      Net Profits                                $173,641          $89,003
      Barrels produced                              3,869            3,862
      Mcf produced                                 60,719           61,006
      Average price/Bbl                          $  21.55          $ 11.00
      Average price/Mcf                          $   2.29          $  1.52

      As shown in the table above,  total Net Profits  increased $84,638 (95.1%)
      for the three  months  ended  September  30, 1999 as compared to the three
      months ended September 30, 1998. Of this increase,  approximately  $41,000
      and $47,000,


                                       32
<PAGE>

      respectively,  were related to increases in the average  prices of oil and
      gas sold.  Volumes of oil sold  increased 7 barrels  while  volumes of gas
      sold  decreased  287 Mcf for the three months ended  September 30, 1999 as
      compared to the three months ended September 30, 1998. Average oil and gas
      prices increased to $21.55 per barrel and $2.29 per Mcf, respectively, for
      the three months ended September 30, 1999 from $11.00 per barrel and $1.52
      per Mcf, respectively, for the three months ended September 30, 1998.

      Depletion of Net Profits  Interests  decreased $1,786 (4.8%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 20.6% for the three months ended  September 30, 1999 from 42.2% for the
      three  months  ended  September  30, 1998.  This  percentage  decrease was
      primarily due to the increases in the average prices of oil and gas sold.

      General and  administrative  expenses  decreased $873 (3.4%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased  to 14.4% for the three  months  ended  September  30, 1999 from
      29.0% for the three  months ended  September  30,  1998.  This  percentage
      decrease was primarily due to the increase in Net Profits.

      NINE MONTHS  ENDED  SEPTEMBER  30, 1999  COMPARED TO THE NINE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                              Nine Months Ended September 30,
                                              -------------------------------
                                                   1999              1998
                                                 --------          --------
      Net Profits                                $455,894          $410,191
      Barrels produced                             13,756            14,384
      Mcf produced                                225,347           194,383
      Average price/Bbl                          $  14.99          $  13.95
      Average price/Mcf                          $   1.86          $   1.83

      As shown in the table above,  total Net Profits  increased $45,703 (11.1%)
      for the nine  months  ended  September  30,  1999 as  compared to the nine
      months ended September 30, 1998. Of this increase,  approximately  $57,000
      was  related  to an  increase  in  volumes  of gas sold and  approximately
      $14,000 and $7,000, respectively, were related to increases in the average
      prices of oil and gas  sold.  These  increases  were  partially  offset by
      decreases of (i) approximately  $9,000 related to a decrease in volumes of
      oil  sold  and  (ii)  approximately  $24,000  related  to an  increase  in
      production  expenses  incurred  by the  owners of the  Working  Interests.
      Volumes  of oil sold  decreased  628  barrels  while  volumes  of gas sold
      increased  30,964 Mcf for the nine  months  ended  September  30,  1999 as
      compared to the nine months ended


                                       33
<PAGE>

      September 30, 1998.  The increase in volumes of gas sold was primarily due
      to (i) a positive  prior  period  volume  adjustment  made by the operator
      during the nine months ended  September  30, 1999 due to the payout of one
      significant  well and (ii) the successful  recompletion of one well during
      the fourth  quarter of 1998.  The  increase  in  production  expenses  was
      primarily  due to (i) a change in the  timing  of  payment  of ad  valorem
      taxes, (ii) workover expenses incurred on two significant wells during the
      nine months ended  September  30, 1999 in order to improve the recovery of
      reserves,  and (iii) lease operating  expenses paid during the nine months
      ended  September  30,  1999  related  to prior  periods  on the well which
      reached payout.  Average oil and gas prices increased to $14.99 per barrel
      and $1.86 per Mcf,  respectively,  for the nine months ended September 30,
      1999 from $13.95 per barrel and $1.83 per Mcf, respectively,  for the nine
      months ended September 30, 1998.

      The P-2  Partnership  sold certain Net Profits  Interests  during the nine
      months ended  September 30, 1999 and recognized a $652 gain on such sales.
      Sales of Net Profits  Interests during the nine months ended September 30,
      1998  resulted  in  the  P-2  Partnership  recognizing  similar  gains  of
      $253,637.

      Depletion of Net Profits  Interests  increased  $5,991 (4.8%) for the nine
      months  ended  September  30, 1999 as  compared  to the nine months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 28.8% for the nine months ended  September  30, 1999 from 30.6% for the
      nine months ended September 30, 1998.

      General and administrative  expenses remained  relatively constant for the
      nine months ended  September 30, 1999 as compared to the nine months ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased to 18.0% for the nine months ended September 30, 1999 from 20.0%
      for the nine months ended September 30, 1998. This percentage decrease was
      primarily due to the increase in Net Profits.

      The P-2  Partnership  should  achieve payout during the three months ended
      December  31,  1999.  After  payout,  operations  and revenues for the P-2
      Partnership will be allocated using after payout percentages. After payout
      percentages  allocate  operating  income and  expenses  10% to the General
      Partner and 90% to the Limited Partners.  Before payout,  operating income
      and  expenses  are  allocated  5% to the  General  Partner  and 95% to the
      Limited Partners. See the Partnerships' Annual Report on Form 10-K for the
      year ended  December  31,  1998 for a further  discussion  of pre and post
      payout allocations of income and expense.



                                       34
<PAGE>

      Cumulative cash  distributions to the Limited  Partners through  September
      30,  1999  were  $8,979,561  or 99.67% of the  Limited  Partners'  capital
      contributions.

      P-3 PARTNERSHIP

      THREE MONTHS ENDED  SEPTEMBER  30, 1999 COMPARED TO THE THREE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                             Three Months Ended September 30,
                                             --------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $322,339         $166,755
      Barrels produced                               7,152            7,192
      Mcf produced                                 113,597          114,354
      Average price/Bbl                           $  21.57         $  11.05
      Average price/Mcf                           $   2.29         $   1.52

      As shown in the table above,  total Net Profits increased $155,584 (93.3%)
      for the three  months  ended  September  30, 1999 as compared to the three
      months ended September 30, 1998. Of this increase,  approximately  $75,000
      and $87,000, respectively, were related to increases in the average prices
      of oil and gas sold.  Volumes of oil and gas sold decreased 40 barrels and
      757 Mcf,  respectively,  for the three months ended  September 30, 1999 as
      compared to the three months ended September 30, 1998. Average oil and gas
      prices increased to $21.57 per barrel and $2.29 per Mcf, respectively, for
      the three months ended September 30, 1999 from $11.05 per barrel and $1.52
      per Mcf, respectively, for the three months ended September 30, 1998.

      Depletion of Net Profits  Interests  decreased $3,312 (4.7%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 20.7% for the three months ended  September 30, 1999 from 42.0% for the
      three  months  ended  September  30, 1998.  This  percentage  decrease was
      primarily due to the increases in the average prices of oil and gas sold.

      General and administrative  expenses decreased $1,642 (3.4%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased  to 14.6% for the three  months  ended  September  30, 1999 from
      29.1% for the three  months ended  September  30,  1998.  This  percentage
      decrease was primarily due to the increase in Net Profits.


                                       35
<PAGE>

      NINE MONTHS  ENDED  SEPTEMBER  30, 1999  COMPARED TO THE NINE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                              Nine Months Ended September 30,
                                              -------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $852,103         $764,416
      Barrels produced                              25,502           26,651
      Mcf produced                                 422,909          363,554
      Average price/Bbl                           $  14.98         $  13.96
      Average price/Mcf                           $   1.87         $   1.84

      As shown in the table above,  total Net Profits  increased $87,687 (11.5%)
      for the nine  months  ended  September  30,  1999 as  compared to the nine
      months ended September 30, 1998. Of this increase,  approximately $109,000
      was  related  to an  increase  in  volumes  of gas sold and  approximately
      $26,000  and  $13,000,  respectively,  were  related to  increases  in the
      average prices of oil and gas sold.  These increases were partially offset
      by decreases of (i) approximately $16,000 related to a decrease in volumes
      of oil sold and (ii)  approximately  $44,000  related  to an  increase  in
      production  expenses  incurred  by the  owners of the  Working  Interests.
      Volumes of oil sold  decreased  1,149  barrels  while  volumes of gas sold
      increased  59,355 Mcf for the nine  months  ended  September  30,  1999 as
      compared to the nine months  ended  September  30,  1998.  The increase in
      volumes  of gas sold was  primarily  due to (i) a  positive  prior  period
      volume  adjustment  made by the  operator  during  the nine  months  ended
      September 30, 1999 due to the payout of one significant  well and (ii) the
      successful recompletion of one well during the fourth quarter of 1998. The
      increase in  production  expenses was primarily due to (i) a change in the
      timing of payment of ad valorem taxes,  (ii) workover expenses incurred on
      two  significant  wells during the nine months ended September 30, 1999 in
      order to improve the  recovery  of  reserves,  and (iii)  lease  operating
      expenses  paid during the nine months ended  September 30, 1999 related to
      prior periods on the well which reached payout. Average oil and gas prices
      increased  to $14.98 per barrel and $1.87 per Mcf,  respectively,  for the
      nine months ended  September 30, 1999 from $13.96 per barrel and $1.84 per
      Mcf, respectively, for the nine months ended September 30, 1998.

      The P-3  Partnership  sold certain Net Profits  Interests  during the nine
      months  ended  September  30,  1999 and  recognized  a $1,252 gain on such
      sales.  Sales  of Net  Profits  Interests  during  the nine  months  ended
      September 30, 1998  resulted in the P-3  Partnership  recognizing  similar
      gains of $603,091.


                                       36
<PAGE>

      Depletion of Net Profits  Interests  increased $12,788 (5.5%) for the nine
      months  ended  September  30, 1999 as  compared  to the nine months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 28.8% for the nine months ended  September  30, 1999 from 30.5% for the
      nine months ended September 30, 1998.

      General and administrative  expenses remained  relatively constant for the
      nine months ended  September 30, 1999 as compared to the nine months ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased to 18.1% for the nine months ended September 30, 1999 from 20.2%
      for the nine months ended September 30, 1998. This percentage decrease was
      primarily due to the increase in Net Profits.

      Cumulative cash  distributions to the Limited  Partners through  September
      30,  1999 were  $16,235,401  or 95.71% of the  Limited  Partners'  capital
      contributions.

      P-4 PARTNERSHIP

      THREE MONTHS ENDED  SEPTEMBER  30, 1999 COMPARED TO THE THREE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                             Three Months Ended September 30,
                                             --------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $215,501         $138,857
      Barrels produced                               4,416            3,835
      Mcf produced                                  81,223           82,033
      Average price/Bbl                           $  20.10         $  11.96
      Average price/Mcf                           $   2.51         $   1.99

      As shown in the table above,  total Net Profits  increased $76,644 (55.2%)
      for the three  months  ended  September  30, 1999 as compared to the three
      months ended September 30, 1998. Of this increase,  approximately  $36,000
      and $42,000, respectively, were related to increases in the average prices
      of oil and gas sold.  Volumes of oil sold  increased  581  barrels,  while
      volumes of gas sold decreased 810 Mcf for the three months ended September
      30, 1999 as compared to the three months  ended  September  30, 1998.  The
      increase in volumes of oil sold was primarily due to increased  production
      on one  significant  well during the three months ended September 30, 1999
      following a successful  workover.  Average oil and gas prices increased to
      $20.10 per barrel and $2.51 per Mcf for the three months  ended  September
      30,  1999 from  $11.96 per  barrel and $1.99 per Mcf for the three  months
      ended September 30, 1998.


                                       37
<PAGE>

      Depletion of Net Profits  Interests  decreased $3,818 (7.0%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 23.5% for the three months ended  September 30, 1999 from 39.2% for the
      three  months  ended  September  30, 1998.  This  percentage  decrease was
      primarily due to the increases in the average prices of oil and gas sold.

      General and administrative  expenses decreased $1,152 (3.2%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased  to 16.2% for the three  months  ended  September  30, 1999 from
      26.0% for the three  months ended  September  30,  1998.  This  percentage
      decrease was primarily due to the increase in Net Profits.

      NINE MONTHS  ENDED  SEPTEMBER  30, 1999  COMPARED TO THE NINE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                              Nine Months Ended September 30,
                                              -------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $546,129         $557,503
      Barrels produced                              13,493           13,111
      Mcf produced                                 269,857          280,161
      Average price/Bbl                           $  15.28         $  13.03
      Average price/Mcf                           $   2.10         $   2.16

      As shown in the table above,  total Net Profits  decreased  $11,374 (2.0%)
      for the nine  months  ended  September  30,  1999 as  compared to the nine
      months ended September 30, 1998. Of this decrease,  approximately  $22,000
      was  related to a decrease in volumes of gas sold,  approximately  $17,000
      was  related  to a  decrease  in  the  average  price  of  gas  sold,  and
      approximately  $8,000 was related to an increase  in  production  expenses
      incurred  by the owners of the Working  Interests.  These  decreases  were
      partially offset by increases of (i)  approximately  $30,000 related to an
      increase in the average  price of oil sold and (ii)  approximately  $5,000
      related  to an  increase  in  volumes  of oil  sold.  Volumes  of oil sold
      increased 382 barrels while volumes of gas sold  decreased  10,304 Mcf for
      the nine months  ended  September  30, 1999 as compared to the nine months
      ended  September  30,  1998.  The  increase  in  production  expenses  was
      primarily due to workover expenses incurred on one significant well during
      the nine months ended September 30, 1999.  Average oil prices increased to
      $15.28 per barrel for the nine months ended September 30, 1999 from $13.03
      per barrel for the nine  months  ended  September  30,  1998.  Average gas
      prices decreased to $2.10 per Mcf for the nine


                                       38
<PAGE>

      months  ended  September  30,  1999 from $2.16 per Mcf for the nine months
      ended  September 30, 1998.  Depletion of Net Profits  Interests  decreased
      $21,107  (11.3%) for the nine months ended  September 30, 1999 as compared
      to the nine months ended  September 30, 1998.  This decrease was primarily
      due to (i) the  decrease in volumes of gas sold and (ii) upward  revisions
      in the  estimates of remaining  oil and gas reserves at December 31, 1998.
      As a percentage  of Net Profits,  this expense  decreased to 30.2% for the
      nine months ended  September 30, 1999 from 33.4% for the nine months ended
      September 30, 1998.

      General and administrative  expenses remained  relatively constant for the
      nine months ended  September 30, 1999 as compared to the nine months ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      remained  relatively constant at 21.0% for the nine months ended September
      30, 1999 and 20.6% for the nine months ended September 30, 1998.

      The P-4  Partnership  should  achieve payout during the three months ended
      December  31,  1999.  After  payout,  operations  and revenues for the P-4
      Partnership will be allocated using after payout percentages. After payout
      percentages  allocate  operating  income and  expenses  10% to the General
      Partner and 90% to the Limited Partners.  Before payout,  operating income
      and  expenses  are  allocated  5% to the  General  Partner  and 95% to the
      Limited Partners. See the Partnerships' Annual Report on Form 10-K for the
      year ended  December  31,  1998 for a further  discussion  of pre and post
      payout allocations of income and expense.

      Cumulative cash  distributions to the Limited  Partners through  September
      30,  1999 were  $12,478,945  or 98.80% of the  Limited  Partners'  capital
      contributions.

      P-5 PARTNERSHIP

      THREE MONTHS ENDED  SEPTEMBER  30, 1999 COMPARED TO THE THREE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                             Three Months Ended September 30,
                                             --------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $230,347         $189,220
      Barrels produced                               1,417            1,771
      Mcf produced                                 116,176          141,478
      Average price/Bbl                           $  21.56         $  15.53
      Average price/Mcf                           $   2.32         $   1.64

      As shown in the table above,  total Net Profits  increased $41,127 (21.7%)
      for the three  months  ended  September  30, 1999 as compared to the three
      months ended September 30,


                                       39
<PAGE>

      1998. Of this increase,  approximately  $9,000 and $79,000,  respectively,
      were related to increases in the average prices of oil and gas sold. These
      increases were partially offset by decreases of  approximately  $5,000 and
      $41,000,  respectively,  related  to  decreases  in volumes of oil and gas
      sold.  Volumes of oil and gas sold  decreased  354 barrels and 25,302 Mcf,
      respectively, for the three months ended September 30, 1999 as compared to
      the three months ended  September 30, 1998. The decrease in volumes of oil
      sold was primarily due to positive prior period volume adjustments made by
      the  operators  on two  significant  wells  during the three  months ended
      September 30, 1998.  The decrease in volumes of gas sold was primarily due
      to (i) normal declines in production and (ii) positive prior period volume
      adjustments  made by the  purchasers  on  several  wells  during the three
      months ended September 30, 1998.  Average oil and gas prices  increased to
      $21.56 per barrel and $2.32 per Mcf,  respectively,  for the three  months
      ended  September  30,  1999  from  $15.53  per  barrel  and $1.64 per Mcf,
      respectively, for the three months ended September 30, 1998.

      Depletion of Net Profits Interests decreased $15,946 (24.4%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30, 1998.  This decrease was primarily due to (i) the decreases
      in volumes of oil and gas sold and (ii) one  significant  well being fully
      depleted in 1998 due to the lack of remaining reserves. As a percentage of
      Net Profits,  this  expense  decreased to 21.5% for the three months ended
      September  30, 1999 from 34.6% for the three  months ended  September  30,
      1998. This  percentage  decrease was primarily due to the increases in the
      average prices of oil and gas sold.

      General and administrative  expenses decreased $1,096 (3.2%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased  to 14.2% for the three  months  ended  September  30, 1999 from
      17.9% for the three  months ended  September  30,  1998.  This  percentage
      decrease was primarily due to the increase in Net Profits.

      NINE MONTHS  ENDED  SEPTEMBER  30, 1999  COMPARED TO THE NINE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                              Nine Months Ended September 30,
                                              -------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $574,192         $619,716
      Barrels produced                               5,378            5,171
      Mcf produced                                 357,095          399,271
      Average price/Bbl                           $  15.84         $  15.17
      Average price/Mcf                           $   1.89         $   1.87



                                       40
<PAGE>

      As shown in the table above,  total Net Profits  decreased  $45,524 (7.3%)
      for the nine  months  ended  September  30,  1999 as  compared to the nine
      months ended September 30, 1998. Of this decrease,  approximately  $79,000
      was  related to a decrease  in volumes  of gas sold,  which  decrease  was
      partially  offset by increases of (i)  approximately  $6,000 related to an
      increase in the average price of gas sold and (ii)  approximately  $20,000
      related to a decrease in production expenses incurred by the owners of the
      Working Interests. Volumes of oil sold increased 207 barrels while volumes
      of gas sold decreased  42,176 Mcf for the nine months ended  September 30,
      1999 as compared to the nine months ended September 30, 1998. The decrease
      in  volumes  of gas sold  was  primarily  due to (i)  normal  declines  in
      production and (ii) positive prior period volume  adjustments  made by the
      purchasers  on several  wells during the nine months ended  September  30,
      1998.  Average oil and gas prices increased to $15.84 per barrel and $1.89
      per Mcf,  respectively,  for the nine months ended September 30, 1999 from
      $15.17  per barrel and $1.87 per Mcf,  respectively,  for the nine  months
      ended September 30, 1998.

      The P-5  Partnership  sold certain Net Profits  Interests  during the nine
      months ended  September  30, 1998 and  recognized a $340,817  gain on such
      sales.  No such gains were  recognized  on sales of Net Profits  Interests
      during the nine months ended September 30, 1999.

      Depletion of Net Profits Interests  decreased $30,579 (16.5%) for the nine
      months  ended  September  30, 1999 as  compared  to the nine months  ended
      September 30, 1998. This decrease was primarily due to (i) the decrease in
      volumes of gas sold and (ii) one significant  well being fully depleted in
      1998  due to the  lack  of  remaining  reserves.  As a  percentage  of Net
      Profits,  this  expense  decreased  to  26.9%  for the nine  months  ended
      September  30, 1999 from 29.9% for the nine  months  ended  September  30,
      1998. This  percentage  decrease was primarily due to the increases in the
      average prices of oil and gas sold and the dollar decrease in depletion of
      Net Profits Interests.

      General and administrative  expenses remained  relatively constant for the
      nine months ended  September 30, 1999 as compared to the nine months ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      increased to 18.8% for the nine months ended September 30, 1999 from 17.4%
      for the nine months ended September 30, 1998.

      Cumulative cash  distributions to the Limited  Partners through  September
      30,  1999  were  $7,811,759  or 65.95% of the  Limited  Partners'  capital
      contributions.

<PAGE>

      P-6 PARTNERSHIP

      THREE MONTHS ENDED  SEPTEMBER  30, 1999 COMPARED TO THE THREE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                             Three Months Ended September 30,
                                             --------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $440,245         $256,471
      Barrels produced                               5,560            3,172
      Mcf produced                                 215,064          249,092
      Average price/Bbl                           $  19.42         $  14.45
      Average price/Mcf                           $   2.36         $   1.61

      As shown in the table above,  total Net Profits increased $183,774 (71.7%)
      for the three  months  ended  September  30, 1999 as compared to the three
      months ended September 30, 1998. Of this increase,  approximately  $28,000
      and  $160,000,  respectively,  were  related to  increases  in the average
      prices of oil and gas sold and  approximately  $35,000  was  related to an
      increase in volumes of oil sold.  These increases were partially offset by
      a decrease of  approximately  $55,000  related to a decrease in volumes of
      gas sold. Volumes of oil sold increased 2,388 barrels while volumes of gas
      sold decreased 34,028 Mcf for the three months ended September 30, 1999 as
      compared to the three months  ended  September  30, 1998.  The increase in
      volumes of oil sold was  primarily  due to positive  prior  period  volume
      adjustments  made by the  purchasers  on  several  wells  during the three
      months ended  September 30, 1999.  The decrease in volumes of gas sold was
      primarily due to (i) normal declines in production and (ii) positive prior
      period volume  adjustments  made by the purchaser on one significant  well
      during the three months  ended  September  30,  1998.  Average oil and gas
      prices increased to $19.42 per barrel and $2.36 per Mcf, respectively, for
      the three months ended September 30, 1999 from $14.45 per barrel and $1.61
      per Mcf, respectively, for the three months ended September 30, 1998.

      Depletion of Net Profits  Interests  decreased $8,972 (8.1%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 23.1% for the three months ended  September 30, 1999 from 43.2% for the
      three  months  ended  September  30, 1998.  This  percentage  decrease was
      primarily due to the increases in the average prices of oil and gas sold.


                                       41
<PAGE>

      General and administrative  expenses decreased $1,323 (3.2%) for the three
      months  ended  September  30, 1999 as compared to the three  months  ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased to 9.0% for the three months ended September 30, 1999 from 15.9%
      for the three months ended September 30, 1998.  This  percentage  decrease
      was primarily due to the increase in Net Profits.

      NINE MONTHS  ENDED  SEPTEMBER  30, 1999  COMPARED TO THE NINE MONTHS ENDED
      SEPTEMBER 30, 1998.

                                              Nine Months Ended September 30,
                                              -------------------------------
                                                    1999             1998
                                                  --------         --------
      Net Profits                                 $996,224         $873,844
      Barrels produced                              14,798           10,069
      Mcf produced                                 657,672          687,862
      Average price/Bbl                           $  15.27         $  14.21
      Average price/Mcf                           $   1.88         $   1.81

      As shown in the table above,  total Net Profits increased $122,380 (14.0%)
      for the nine  months  ended  September  30,  1999 as  compared to the nine
      months ended September 30, 1998. Of this increase,  approximately  $67,000
      was related to an increase in volumes of oil sold,  approximately  $16,000
      and $49,000, respectively, were related to increases in the average prices
      of oil and gas sold, and  approximately  $45,000 was related to a decrease
      in production  expenses  incurred by the owners of the Working  Interests.
      These  increases  were  partially  offset by a decrease  of  approximately
      $55,000 related to a decrease in volumes of gas sold.  Volumes of oil sold
      increased 4,729 barrels while volumes of gas sold decreased 30,190 Mcf for
      the nine months  ended  September  30, 1999 as compared to the nine months
      ended  September  30,  1998.  The  increase  in  volumes  of oil  sold was
      primarily due to (i) positive prior period volume  adjustments made by the
      purchasers  on several  wells during the nine months ended  September  30,
      1999 and (ii) the  receipt  of  revenues  on a well which paid out in late
      1998. The decrease in production  expenses was primarily due to a decrease
      in repair and maintenance expenses on several wells during the nine months
      ended September 30, 1999.  Average oil and gas prices  increased to $15.27
      per  barrel and $1.88 per Mcf,  respectively,  for the nine  months  ended
      September 30, 1999 from $14.21 per barrel and $1.81 per Mcf, respectively,
      for the nine months ended September 30, 1998.

      The P-6  Partnership  sold certain Net Profits  Interests  during the nine
      months ended  September  30, 1998 and  recognized a $133,104  gain on such
      sales.  No such gains were  recognized  on sales of Net  Profits  Interest
      during the nine months ended September 30, 1999.


                                       42
<PAGE>

      Depletion of Net Profits  Interests  decreased  $3,239 (1.0%) for the nine
      months  ended  September  30, 1999 as  compared  to the nine months  ended
      September 30, 1998. As a percentage of Net Profits, this expense decreased
      to 30.7% for the nine months ended  September  30, 1999 from 35.4% for the
      nine months  ended  September  30,  1998.  This  percentage  decrease  was
      primarily due to the increases in the average prices of oil and gas sold.

      General and administrative  expenses remained  relatively constant for the
      nine months ended  September 30, 1999 as compared to the nine months ended
      September  30,  1998.  As a  percentage  of Net  Profits,  these  expenses
      decreased to 13.1% for the nine months ended September 30, 1999 from 14.9%
      for the nine months ended September 30, 1998. This percentage decrease was
      primarily due to the increase in Net Profits.

      Cumulative cash  distributions to the Limited  Partners through  September
      30,  1999 were  $10,485,248  or 73.30% of the  Limited  Partners'  capital
      contributions.


YEAR 2000 COMPUTER ISSUES
- -------------------------

      IN GENERAL

      The Year 2000 Issue ("Y2K")  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.  For  example,
      computer programs and imbedded chips that are date sensitive may recognize
      a date  using  (00) as the  year  1900  rather  than the  year  2000.  The
      consequence of Y2K is that computer and imbedded processing systems may be
      at risk of malfunctioning, particularly during the transition from 1999 to
      2000.

      The effects of Y2K are exacerbated by the  interdependence of computer and
      telecommunication  systems throughout the world. This interdependence also
      exists  among  the  Partnerships,   Samson  Investment   Company  and  its
      affiliates  ("Samson"),   and  their  vendors,   customers,  and  business
      partners, as well as with regulators.  The potential risks associated with
      Y2K for an oil and gas  production  company fall into three general areas:
      (i)  financial,   leasehold  and  administrative  computer  systems,  (ii)
      imbedded  systems in field process  control  units,  and (iii) third party
      exposures. As discussed below, General Partner does not believe that these
      risks will be material to the Partnerships' operations.


                                       43
<PAGE>

      The  Partnerships'  business  is  producing  oil and gas.  The  day-to-day
      production of the  Partnerships' oil and gas is not dependent on computers
      or equipment with imbedded chips. As further  discussed below,  management
      anticipates that the Partnerships'  daily business  activities will not be
      materially affected by Y2K.

      The  Partnerships  rely on Samson to provide all of their  operational and
      administrative  services on either a direct or indirect basis.  Samson has
      addressed each of the three Y2K areas  discussed above through a readiness
      process that:

      1.    increased the awareness of the issue among key employees;
      2.    identified areas of potential risk;
      3.    assessed the relative  impact of these risks and Samson's  ability
            to manage them; and
      4.    remediated the risks on a priority basis wherever possible.

      One  of  Samson   Investment   Company's   Executive  Vice  Presidents  is
      responsible  for  communicating  to its Board of Directors Y2K actions and
      for the  ultimate  implementation  of its Y2K plan.  He has  delegated  to
      Samson   Investment   Company's  Senior  Vice   President-Technology   and
      Administrative Services principal responsibility for ensuring Y2K
      compliance within Samson.

      Samson  has  been  planning  for  the  impact  of Y2K  on its  information
      technology  systems since 1993.  As of November 1, 1999,  Samson is in the
      final stages of implementation of a Y2K plan, as summarized below:

      FINANCIAL AND ADMINISTRATIVE SYSTEMS

      1. Awareness. Samson has alerted its officers, managers and supervisors of
      Y2K  issues  and asked them to have  their  employees  participate  in the
      identification  of potential Y2K risks which might  otherwise go unnoticed
      by higher level  employees  and  officers.  As a result,  awareness of the
      issue is considered high.

      2.  Risk   Identification.   Samson's  most   significant   financial  and
      administrative  systems  exposure is the Y2K status of the  accounting and
      land  administration  system used to collect and manage data for  internal
      management  decision making and for external  revenue and accounts payable
      purposes.  Other concerns include network  hardware and software,  desktop
      computing  hardware  and  software,  telecommunications,  and office space
      readiness.


                                       44
<PAGE>

      3. Risk  Assessment.  The failure to identify  and correct a material  Y2K
      problem could result in inaccurate or untimely  financial  information for
      management  decision-making  or cash flow and payment purposes,  including
      maintaining oil and gas leases.

      4.  Remediation.  Since 1993, Samson has been upgrading its accounting and
      land administration software. All of the Y2K upgrades have been completed.
      In addition,  in 1997 and 1998 Samson replaced or applied software patches
      to substantially all of its network and desktop software  applications and
      believes  them to be currently Y2K  compliant.  The costs of all such risk
      assessments and remediation were not material to the Partnerships.

      5. Contingency  Planning.  Notwithstanding the foregoing,  should there be
      significant   unanticipated   disruptions   in  Samson's   financial   and
      administrative systems, all of the accounting processes that are currently
      automated will need to be performed  manually.  Samson has communicated to
      its management  team the importance of having  adequate staff available to
      manually perform necessary functions to minimize disruptions.


      IMBEDDED SYSTEMS

      1.  Awareness.  Samson's  Y2K  program  has  involved  all levels of field
      personnel from production  foremen and higher.  Employees at all levels of
      the organization  have been asked to participate in the  identification of
      potential  Y2K risks,  which might  otherwise go unnoticed by higher level
      employees and officers of Samson, and as a result,  awareness of the issue
      is considered high.

      2. Risk  Identification.  Samson has inventoried all possible exposures to
      imbedded chips and systems. Such exposures can be classified as either (i)
      oil and gas production and  processing  equipment or (ii) office  machines
      such as faxes, copiers, phones, etc.

      With respect to oil and gas production and processing  equipment,  neither
      Samson nor the Partnerships operate offshore wells, significant processing
      plants, or wells with older electronic  monitoring  systems.  As a result,
      Samson's  inventory  identified less than 10  applications  using imbedded
      chips.  All of these have been tested by the  respective  vendors and have
      been found to be Y2K compliant or have been upgraded or replaced.


                                       45
<PAGE>

      Office machines have been tested by Samson and vendors and are believed to
      be compliant.

      3. Risk Assessment and Remediation.  The failure to identify and correct a
      material  Y2K  problem in an  imbedded  system  could  result in  outcomes
      ranging  from errors in data  reporting  to  curtailments  or shutdowns in
      production.  As noted above,  Samson has identified  less than 10 imbedded
      system  applications  all of which have been made  compliant  or replaced.
      None of these  applications  are  believed to be material to Samson or the
      Partnerships.   Samson  believes  that  sufficient  manual  processes  are
      available  to  minimize  any field  level  risk and that  there will be no
      material impact on the Partnerships with respect to these applications.

      4. Contingency Planning. Should material production disruptions occur as a
      result of Y2K  failures  in field  operations,  Samson  will  utilize  its
      existing  field  personnel in an attempt to avoid any  material  impact on
      operating cash flow. Samson is not able to quantify any potential exposure
      in the event of systems failure or inadequate manual alternatives.


      THIRD PARTY EXPOSURES

      1. Awareness.  Samson has advised  management to consider Y2K implications
      with its outside vendors, customers, and business partners. Management has
      been asked to participate in the  identification  of potential third party
      Y2K risks and, as a result, awareness of the issue is considered high.

      2. Risk Identification. Samson's most significant third party Y2K exposure
      is its  dependence  on third  parties for the receipt of revenues from oil
      and gas sales.  However,  virtually all of these purchasers are very large
      and sophisticated  companies.  Other Y2K concerns include the availability
      of  electric  power  to  Samson's  field  operations,   the  integrity  of
      telecommunication  systems,  and the  readiness  of  commercial  banks  to
      execute electronic fund transfers.

      3. Risk  Assessment.  Because of the high  awareness of the Y2K problem in
      the U.S.,  Samson  has not  undertaken  and does not plan to  undertake  a
      formal company wide plan to make inquiries of third parties on the subject
      of Y2K readiness. If it did so, Samson has no ability to require responses
      to such inquiries or to independently  verify their accuracy.  Samson has,
      however,  received  oral  assurances  from  its  significant  oil  and gas
      purchasers  of Y2K  compliance.  If  significant  disruptions  from  major
      purchasers were to occur,  however,  there could be a material and adverse
      impact on the

                                       46
<PAGE>

      Partnerships' results of operations, liquidity, and financial conditions.

      It is  important  to note that  third  party oil and gas  purchasers  have
      significant  incentives to avoid  disruptions  arising from a Y2K failure.
      For example,  most of these parties are under  contractual  obligations to
      purchase oil and gas or disperse revenues to Samson.  The failure to do so
      will result in  contractual  and statutory  penalties.  Therefore,  Samson
      believes  that it is  unlikely  that there will be  material  third  party
      non-compliance with purchase and remittance obligations as a result of Y2K
      issues.

      4.  Remediation.   Where  Samson  perceived  a  significant  risk  of  Y2K
      non-compliance by banks and other significant  vendors that would have had
      a material  impact on Samson's  business,  Samson  undertook joint testing
      during 1999, and any identified problems have been resolved.

      5. Contingency  Planning.  In the unlikely event that material  production
      disruptions  occur as a result  of Y2K  failures  of  third  parties,  the
      Partnerships' operating cash flow could be impacted. This contingency will
      be  factored   into   deliberations   on  the  level  of  quarterly   cash
      distributions paid out during any such period of cash flow disruption.



                                       47
<PAGE>

ITEM 3.     QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET
            RISK.

            The Partnerships do not hold any market risk sensitive instruments.


                                       48
<PAGE>

                           PART II. OTHER INFORMATION


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

(a)   Exhibits

      27.1              Financial  Data Schedule  containing  summary  financial
                        information   extracted   from  the  P-1   Partnership's
                        financial  statements  as of September  30, 1999 and for
                        the  nine  months  ended   September  30,  1999,   filed
                        herewith.

      27.2              Financial  Data Schedule  containing  summary  financial
                        information   extracted   from  the  P-2   Partnership's
                        financial  statements  as of September  30, 1999 and for
                        the  nine  months  ended   September  30,  1999,   filed
                        herewith.

      27.3              Financial  Data Schedule  containing  summary  financial
                        information   extracted   from  the  P-3   Partnership's
                        financial  statements  as of September  30, 1999 and for
                        the  nine  months  ended   September  30,  1999,   filed
                        herewith.

      27.4              Financial  Data Schedule  containing  summary  financial
                        information   extracted   from  the  P-4   Partnership's
                        financial  statements  as of September  30, 1999 and for
                        the  nine  months  ended   September  30,  1999,   filed
                        herewith.

      27.5              Financial  Data Schedule  containing  summary  financial
                        information   extracted   from  the  P-5   Partnership's
                        financial  statements  as of September  30, 1999 and for
                        the  nine  months  ended   September  30,  1999,   filed
                        herewith.

      27.6              Financial  Data Schedule  containing  summary  financial
                        information   extracted   from  the  P-6   Partnership's
                        financial  statements  as of September  30, 1999 and for
                        the  nine  months  ended   September  30,  1999,   filed
                        herewith.

                        All other exhibits are omitted as inapplicable.

(b) Reports on Form 8-K.

            None.


                                       49
<PAGE>

                                   SIGNATURES

Pursuant  to the  requirements  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 authorized.


                              GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-1
                              LIMITED PARTNERSHIP
                              GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME P-2
                              LIMITED PARTNERSHIP
                              GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME
                              LIMITED PARTNERSHIP P-3
                              GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME
                              LIMITED PARTNERSHIP P-4
                              GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME
                              LIMITED PARTNERSHIP P-5
                              GEODYNE INSTITUTIONAL/PENSION ENERGY INCOME
                              LIMITED PARTNERSHIP P-6

                                    (Registrant)

                                    BY:   GEODYNE RESOURCES, INC.

                                          General Partner


Date:  November 3, 1999            By:       /s/Dennis R. Neill
                                       --------------------------------
                                             (Signature)
                                             Dennis R. Neill
                                             President


Date:  November 3, 1999            By:      /s/Patrick M. Hall
                                       --------------------------------
                                            (Signature)
                                            Patrick M. Hall
                                            Principal Accounting Officer



                                       50
<PAGE>

                                INDEX TO EXHIBITS


NUMBER      DESCRIPTION
- ------      -----------

27.1        Financial Data Schedule  containing  summary  financial  information
            extracted from the Geodyne  Institutional/Pension  Energy Income P-1
            Limited Partnership's  financial statements as of September 30, 1999
            and for the nine months ended September 30, 1999, filed herewith.

27.2        Financial Data Schedule  containing  summary  financial  information
            extracted from the Geodyne  Institutional/Pension  Energy Income P-2
            Limited Partnership's  financial statements as of September 30, 1999
            and for the nine months ended September 30, 1999, filed herewith.

27.3        Financial Data Schedule  containing  summary  financial  information
            extracted  from  the  Geodyne  Institutional/Pension  Energy  Income
            Limited  Partnership P-3's financial  statements as of September 30,
            1999  and for the  nine  months  ended  September  30,  1999,  filed
            herewith.

27.4        Financial Data Schedule  containing  summary  financial  information
            extracted  from  the  Geodyne  Institutional/Pension  Energy  Income
            Limited  Partnership P-4's financial  statements as of September 30,
            1999  and for the  nine  months  ended  September  30,  1999,  filed
            herewith.

27.5        Financial Data Schedule  containing  summary  financial  information
            extracted  from  the  Geodyne  Institutional/Pension  Energy  Income
            Limited  Partnership P-5's financial  statements as of September 30,
            1999  and for the  nine  months  ended  September  30,  1999,  filed
            herewith.

27.6        Financial Data Schedule  containing  summary  financial  information
            extracted  from  the  Geodyne  Institutional/Pension  Energy  Income
            Limited  Partnership P-6's financial  statements as of September 30,
            1999  and for the  nine  months  ended  September  30,  1999,  filed
            herewith.

            All other exhibits are omitted as inapplicable.



                                       51
<PAGE>

<TABLE> <S> <C>

<ARTICLE>                           5
<CIK>                               0000850427
<NAME>                              GEODYNE INST/PEN ENERGY INCOME LTD PSHP P-1

<S>                                   <C>
<PERIOD-TYPE>                       9-MOS
<FISCAL-YEAR-END>                   DEC-31-1999
<PERIOD-START>                      JAN-01-1999
<PERIOD-END>                        SEP-30-1999
<CASH>                                   149,065
<SECURITIES>                                   0
<RECEIVABLES>                            182,759
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                         331,824
<PP&E>                                 6,910,290
<DEPRECIATION>                         5,897,421
<TOTAL-ASSETS>                         1,344,693
<CURRENT-LIABILITIES>                          0
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       0
<OTHER-SE>                             1,344,693
<TOTAL-LIABILITY-AND-EQUITY>           1,344,693
<SALES>                                  585,395
<TOTAL-REVENUES>                         589,156
<CGS>                                          0
<TOTAL-COSTS>                            259,148
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                          330,008
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                      330,008
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                             330,008
<EPS-BASIC>                               2.62
<EPS-DILUTED>                                  0



</TABLE>

<TABLE> <S> <C>

<ARTICLE>                           5
<CIK>                               0000850428
<NAME>                              GEODYNE INST/PEN ENERGY INCOME LTD PSHP P-2

<S>                                   <C>
<PERIOD-TYPE>                       9-MOS
<FISCAL-YEAR-END>                   DEC-31-1999
<PERIOD-START>                      JAN-01-1999
<PERIOD-END>                        SEP-30-1999
<CASH>                                   125,109
<SECURITIES>                                   0
<RECEIVABLES>                            150,770
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                         275,879
<PP&E>                                 5,581,697
<DEPRECIATION>                         4,704,735
<TOTAL-ASSETS>                         1,152,841
<CURRENT-LIABILITIES>                          0
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       0
<OTHER-SE>                             1,152,841
<TOTAL-LIABILITY-AND-EQUITY>           1,152,841
<SALES>                                  455,894
<TOTAL-REVENUES>                         459,004
<CGS>                                          0
<TOTAL-COSTS>                            213,425
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                          245,579
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                      245,579
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                             245,579
<EPS-BASIC>                               2.53
<EPS-DILUTED>                                  0



</TABLE>

<TABLE> <S> <C>

<ARTICLE>                           5
<CIK>                               0000854066
<NAME>                              GEODYNE INST/PEN ENERGY INCOME LTD PSHP P-3

<S>                                   <C>
<PERIOD-TYPE>                       9-MOS
<FISCAL-YEAR-END>                   DEC-31-1999
<PERIOD-START>                      JAN-01-1999
<PERIOD-END>                        SEP-30-1999
<CASH>                                   234,108
<SECURITIES>                                   0
<RECEIVABLES>                            279,911
<ALLOWANCES>                                   0
<INVENTORY>                                    0
<CURRENT-ASSETS>                         514,019
<PP&E>                                10,505,298
<DEPRECIATION>                         8,871,437
<TOTAL-ASSETS>                         2,147,880
<CURRENT-LIABILITIES>                          0
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       0
<OTHER-SE>                             2,147,880
<TOTAL-LIABILITY-AND-EQUITY>           2,147,880
<SALES>                                  852,103
<TOTAL-REVENUES>                         858,211
<CGS>                                          0
<TOTAL-COSTS>                            400,086
<OTHER-EXPENSES>                               0
<LOSS-PROVISION>                               0
<INTEREST-EXPENSE>                             0
<INCOME-PRETAX>                          458,125
<INCOME-TAX>                                   0
<INCOME-CONTINUING>                      458,125
<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
<NET-INCOME>                             458,125
<EPS-BASIC>                               2.51
<EPS-DILUTED>                                  0



</TABLE>

<TABLE> <S> <C>

<ARTICLE>                           5
<CIK>                               0000860744
<NAME>                              GEODYNE INST/PEN ENERGY INCOME LTD PSHP P-4

<S>                                   <C>
<PERIOD-TYPE>                       9-MOS
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<PERIOD-START>                      JAN-01-1999
<PERIOD-END>                        SEP-30-1999
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                          0
                                    0
<COMMON>                                       0
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<TOTAL-LIABILITY-AND-EQUITY>           1,372,062
<SALES>                                  546,129
<TOTAL-REVENUES>                         549,729
<CGS>                                          0
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<INCOME-TAX>                                   0
<INCOME-CONTINUING>                      270,279
<DISCONTINUED>                                 0
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<CHANGES>                                      0
<NET-INCOME>                             270,279
<EPS-BASIC>                               1.98
<EPS-DILUTED>                                  0



</TABLE>

<TABLE> <S> <C>

<ARTICLE>                           5
<CIK>                               0000863832
<NAME>                              GEODYNE INST/PEN ENERGY INCOME LTD PSHP P-5

<S>                                   <C>
<PERIOD-TYPE>                       9-MOS
<FISCAL-YEAR-END>                   DEC-31-1999
<PERIOD-START>                      JAN-01-1999
<PERIOD-END>                        SEP-30-1999
<CASH>                                   187,309
<SECURITIES>                                   0
<RECEIVABLES>                            140,090
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<PP&E>                                 9,850,667
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<TOTAL-ASSETS>                         1,174,588
<CURRENT-LIABILITIES>                          0
<BONDS>                                        0
                          0
                                    0
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<TOTAL-LIABILITY-AND-EQUITY>           1,174,588
<SALES>                                  574,192
<TOTAL-REVENUES>                         578,359
<CGS>                                          0
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<INCOME-TAX>                                   0
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<DISCONTINUED>                                 0
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<CHANGES>                                      0
<NET-INCOME>                             316,209
<EPS-BASIC>                               2.49
<EPS-DILUTED>                                  0



</TABLE>

<TABLE> <S> <C>

<ARTICLE>                           5
<CIK>                               0000869801
<NAME>                              GEODYNE INST/PEN ENERGY INCOME LTD PSHP P-6

<S>                                   <C>
<PERIOD-TYPE>                       9-MOS
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<PERIOD-START>                      JAN-01-1999
<PERIOD-END>                        SEP-30-1999
<CASH>                                   311,145
<SECURITIES>                                   0
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<ALLOWANCES>                                   0
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<TOTAL-ASSETS>                         2,349,291
<CURRENT-LIABILITIES>                          0
<BONDS>                                        0
                          0
                                    0
<COMMON>                                       0
<OTHER-SE>                             2,349,291
<TOTAL-LIABILITY-AND-EQUITY>           2,349,291
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<TOTAL-REVENUES>                       1,002,721
<CGS>                                          0
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<DISCONTINUED>                                 0
<EXTRAORDINARY>                                0
<CHANGES>                                      0
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<EPS-BASIC>                               3.68
<EPS-DILUTED>                                  0



</TABLE>


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