SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549



                                    Form 8-K


              Current Report Pursuant to Section 13 or 15(d) of the
                         Securities Exchange Act of 1934



        Date of Report (date of earliest event reported) December 5, 2002
                               (December 4, 2002)




                          CHESAPEAKE ENERGY CORPORATION
             (Exact name of Registrant as specified in its Charter)



   Oklahoma                         1-13726                      73-1395733
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(State or other jurisdiction   (Commission File No.)           (IRS Employer
      of incorporation)                                     Identification No.)


            6100 North Western Avenue, Oklahoma City, Oklahoma 73118
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               (Address of principal executive offices) (Zip Code)



                                 (405) 848-8000
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               (Registrant's telephone number, including area code)





                    INFORMATION TO BE INCLUDED IN THE REPORT


ITEM 9.  REGULATION FD DISCLOSURE

     Chesapeake  Energy  Corporation  ("Chesapeake")  issued a Press  Release on
December 4, 2002 announcing updated 2003 Forecast. The following was included in
the press release:

     OKLAHOMA CITY,  OKLAHOMA,  DECEMBER 4, 2002 - Chesapeake Energy Corporation
(NYSE:CHK) today announced an updated 2003 forecast that revises and replaces in
its entirety Chesapeake's previous 2003 forecast, which had been last updated on
November 4, 2002.  The company's  forecasts  and  estimates are  forward-looking
statements within the meaning of the Private Securities Litigation Reform Act of
1995.  Actual results may differ  materially due to the risks and  uncertainties
identified at the end of this release.  Furthermore,  these  projections  do not
reflect the potential  impact of unforeseen  events that may occur subsequent to
the issuance of this release.

     Chesapeake's  updated  guidance  incorporates  the effects of the company's
agreement  to  purchase  $300  million  of  Mid-Continent  gas  properties  from
Tulsa-based,  ONEOK,  Inc.  The  forecast  assumes  the  transaction  closes  as
scheduled  on  January  31,  2003.  For  2003,  the  company  is now  projecting
production  of 207-212  billion  cubic feet of gas  equivalent  (bcfe) (91% gas)
compared to its previous  projection  of 190-195 bcfe (90% gas).  Projected  per
unit  operating  expenses  are  expected to remain  largely  unchanged  from the
company's  previous  guidance:  per mcfe lease operating expenses of $0.52-$0.56
(reduced from $0.58-$0.62), production taxes of $0.22-$0.24, marketing and other
income  of  $0.04-$0.07  (increased  from  $0.03-$0.06),   interest  expense  of
$0.63-$0.67  (increased from $0.60-$0.65),  general and administrative  costs of
$0.09-$0.10 and DD&A of oil and gas properties of $1.30-$1.35.  Chesapeake's tax
rate in 2003 should average 40%, all of which should be deferred. If the company
is  successful  in trading or selling its  Permian  Basin  assets in 2003,  this
guidance may need to be modified.

     Chesapeake  also expects to report with its fourth  quarter  results a $7.5
million  after-tax  loss from the company's  decision to write-down the carrying
value of its  investment  in Seven Seas  Petroleum  Inc.'s  senior  secured debt
(including  accrued  interest) to $7.5 million  from $20.0  million.  Chesapeake
previously reported a $3.0 million after-tax  impairment of the company's equity
position in Seven Seas during the third quarter of 2002.



     This document  contains  forward-looking  statements  within the meaning of
Section 27A of the  Securities  Act of 1933 and  Section  21E of the  Securities
Exchange Act of 1934.  Forward-looking statements include estimates and give our
current  expectations  or  forecasts  of  future  events.  They are based on our
historical  operating  trends,  our existing  commodity hedging position and our
current  estimate of proved  reserves.  Although we believe our  forward-looking
statements are reasonable,  they can be affected by inaccurate assumptions or by
known or unknown risks and uncertainties. For example, statements concerning the
fair values of derivative  contracts  and their  estimated  contribution  to our
future results of operations are based upon market  information as of a specific
date.  These market prices are subject to significant  volatility.  Factors that
could cause actual  operating and financial  results to differ  materially  from
expected  results include the volatility of oil and gas prices,  our substantial
indebtedness,  our  commodity  price risk  management  activities,  the cost and
availability  of  drilling  and  production  services,  our  ability  to replace
reserves, the availability of capital,  uncertainties inherent in evaluating our
own reserves and the reserves we acquire, drilling and operating risks and other
risk factors  described  in the  company's  2001 annual  report on Form 10-K and
subsequent filings with the Securities and Exchange Commission.

     Chesapeake Energy Corporation is one of the 10 largest  independent natural
gas  producers  in the  U.S.  Headquartered  in  Oklahoma  City,  the  company's
operations are focused on exploratory and  developmental  drilling and producing
property  acquisitions  in the  Mid-Continent  region of the United States.  The
company's Internet address is www.chkenergy.com.

     With the filing of this report on Form 8-K, we are  updating the outlook on
our website at www.chkenergy.com. We caution you that our outlook is given as of
December 4, 2002 based on currently available  information,  and that we are not
undertaking any obligation to update our estimates as conditions change or other
information becomes available.





                                    SIGNATURE


         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.

                                            CHESAPEAKE ENERGY CORPORATION



                                            By: /s/ Aubrey K. McClendon
                                                    ---------------------------
                                                    Aubrey K. McClendon
                                                  Chairman of the Board and
                                                   Chief Executive Officer

Dated:        December 5, 2002