January 28, 2002                       RE:  2001 YEAR-END ESTIMATED VALUATION


Dear Geodyne Energy Income Program Unit Holder:

As in past  years,  Geodyne  is  providing  you with the  following  information
relating to the 2001  year-end  estimated  valuations  for your  Geodyne  Energy
Income  Programs.  Enclosed with this letter is a schedule  showing your Geodyne
partnership   investments,   your  investment   amount,  the  current  estimated
valuation, 2001 cash distributions and cumulative cash distributions to date.

REQUIREMENTS FOR A YEAR-END VALUATION

As you know, the Geodyne Energy Income  Programs are  partnerships  designed for
long-term  holding.  Since  the  units are not  traded  on any  organized  stock
exchange, only a limited number of interests in the programs change hands during
the year.  The  values for  securities  other than  partnerships  are  generally
obtained by looking at secondary  market  trading  prices as quoted on the stock
exchanges.  Limited  partnerships are generally illiquid and were never intended
to, and do not,  trade  regularly  or in any  established  market.  As a result,
prices obtained in isolated secondary market  transactions may not be a reliable
indicator of the value of this investment.

While noting this valuation  difficulty,  under the  regulations of the Internal
Revenue Service (the "IRS Regulations"),  IRA custodians are required to provide
year-end  values  for all  securities  held in their  clients'  IRAs.  Given the
obligations under the IRS Regulations and certain  provisions of the Partnership
prospectuses,  Geodyne is providing to you and  requesting  brokerage  firms and
other custodians a December 31, 2001, estimated value for each partnership.  The
estimates are based upon the  methodology  explained  below.  While  independent
engineers  have  reviewed  the  properties  associated  with at least 80% of the
estimated  value of the  proved  producing  reserves  in each  partnership,  the
estimated valuations were not prepared by a third party appraiser.

Please note that your  brokerage  firm or other  custodian may be relying on the
estimates  herein or  estimates  determined  by some other party to meet any IRS
reporting  requirements,  which estimates may differ from the estimates reported
herein.  You should  discuss with your custodian (not Geodyne) any questions you
have about estimates communicated by that custodian.

CALCULATING THE ESTIMATED VALUATION

The main component of the estimated valuation is the present value of the future
cash flow estimated to be received from  producing the remaining  proved oil and
natural gas reserves.  Present value means discounting future cash flow to today
to  recognize  that a dollar  received in the future is worth less than a dollar
received  today.  In addition,  the  estimated  valuation  includes any material
balance sheet items (cash on hand and gas balancing liabilities).  The valuation
does not include a deduction for future  partnership  general and administrative
expenses.


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For determining the present value of future cash flow,  pricing guidelines and a
time value discount rate set forth by the Securities and Exchange Commission for
financial  reporting  purposes  ("SECPV10") were used.  Under these  guidelines,
year-end  prices  received  for  oil  and  gas  are  used  for  the  life of the
production.  Therefore,  there is no escalation for prices or production  costs,
except for assured  contractual gas pricing escalations (which are insignificant
for the Geodyne partnerships).  The December 31, 2001, calculations are based on
estimated  average  prices of $16.75  per  barrel of oil and $2.65 per  thousand
cubic feet of gas.  (This  compares to $27.52 per barrel and $6.03 per  thousand
cubic feet of gas used for the 2000 Year-End Estimates.) Future net cash flow is
then discounted to a present value at a 10% annual rate.

THESE ESTIMATES DO NOT REFLECT CASH  DISTRIBUTIONS  RECEIVED TO DATE.  ESTIMATED
VALUATIONS ARE NOT INDICATIVE OF WHAT FUTURE CASH  DISTRIBUTIONS TO UNIT HOLDERS
WILL BE. THE ESTIMATES DO NOT NECESSARILY  REFLECT WHAT COULD BE RECEIVED SHOULD
A UNIT HOLDER DECIDE TO SELL HIS OR HER UNITS ON THE SECONDARY  MARKET OR IF THE
PARTNERSHIP  WAS  LIQUIDATED.  SINCE THE  ESTIMATES  ARE BASED UPON  ASSUMPTIONS
CONCERNING  FUTURE OIL AND GAS PRICES AND REMAINING  RESERVE  VOLUMES,  THEY ARE
NECESSARILY  INHERENTLY  IMPRECISE.  UNIT  HOLDERS  SHOULD  ALSO  NOTE  THAT THE
ESTIMATED  VALUATIONS ARE NOT ADJUSTED DURING THE YEAR FOR  PRODUCTION,  PRICING
CHANGES, CASH DISTRIBUTIONS, ETC.

REASONS FOR YEAR TO YEAR CHANGES IN ESTIMATES

In  all  of  the  Geodyne  Programs,  2001  year-end  estimated  valuations  are
signficantly  lower than the 2000 year-end  estimates.  This is primarily due to
the  significantly  lower natural gas and crude oil prices in effect on December
31, 2001 compared to December 31, 2000.  Actual  future  prices  received by the
Programs  will likely be  different  from the prices in effect on  December  31,
2001.

Although the vast  majority of  partnership  reserves are proved,  and therefore
less  likely to  fluctuate  significantly,  all  reserves  and  evaluations  are
estimates subject to many judgmental factors. Additional factors that can result
in year to year changes in the  estimates of the  remaining  oil and natural gas
reserve  quantities and the value of such reserves based on a cash flow analysis
include:

*     Estimates by engineers  can vary from year to year,  based on the inherent
      impreciseness of estimating reserves in the ground.
*     Improved  oil  and gas  prices  can  increase  estimates  of  economically
      recoverable reserves while lower prices can decrease such estimates. Price
      changes also directly impact estimates of future cash flow.
*     A longer  performance  history of wells  provides  more  accurate data for
      calculating reserve quantities.
*     Mechanical difficulties at the well site can prohibit production.
*     Newly  drilled  wells near  partnership  wells can drain  reserves  that
      would otherwise be produced by partnership wells.
*     Successful  development  drilling  and  enhancement  projects  can  add to
      existing reserves.

Please contact Geodyne Investor Services at the letterhead  address or telephone
number if you have any questions regarding this letter.

Sincerely,



Dennis R. Neill
President
Geodyne Resources, Inc.

Enclosure

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