EXHIBIT 99.1
                                                                    ------------


              CHESAPEAKE ENERGY CORPORATION REPORTS RECORD RESULTS
                    FOR THE FOURTH QUARTER AND FULL-YEAR 2004

 COMPANY REPORTS 2004 FOURTH QUARTER NET INCOME AVAILABLE TO COMMON SHAREHOLDERS
      OF $163 MILLION ON REVENUE OF $942 MILLION AND PRODUCTION OF 103 BCFE

   COMPANY REPORTS FULL-YEAR 2004 NET INCOME AVAILABLE TO COMMON SHAREHOLDERS
     OF $439 MILLION ON REVENUE OF $2,709 MILLION AND PRODUCTION OF 363 BCFE

      PROVED RESERVES REACH 4.9 TCFE FROM PROVED RESERVE ADDS OF 1.7 TCFE;
   RESERVE REPLACEMENT EQUALS 578% AT THE ATTRACTIVE DRILLING AND ACQUISITION
     COST OF $1.21 PER MCFE; PROVED RESERVES NOW EXPECTED TO EXCEED 5.4 TCFE
                 BY YEAR-END 2005 AND 5.8 TCFE BY YEAR-END 2006

       OIL AND NATURAL GAS PRODUCTION INCREASES 40% QUARTER-OVER-QUARTER,
           35% YEAR-OVER-YEAR, AND 9% SEQUENTIAL QUARTER-OVER-QUARTER;
                       ORGANIC GROWTH IN 2004 REACHES 20%,
              EXCEEDS 2003'S EXCELLENT ORGANIC GROWTH RATE OF 18%;
       CHESAPEAKE NOW 4TH LARGEST INDEPENDENT PRODUCER OF U.S. NATURAL GAS


OKLAHOMA  CITY,  OKLAHOMA,  FEBRUARY  22, 2005 - Chesapeake  Energy  Corporation
(NYSE:  CHK) today  reported  financial  and  operating  results  for the fourth
quarter  of 2004  and for  the  full-year  2004.  For  the  quarter,  Chesapeake
generated net income  available to common  shareholders of $163.2 million ($0.52
per fully diluted common share),  operating cash flow of $423.7 million (defined
as cash flow from operating activities before changes in assets and liabilities)
and ebitda of $550.1  million  (defined as income before income taxes,  interest
expense,  and  depreciation,  depletion and amortization  expense) on revenue of
$942.1  million  and  production  of 102.9  billion  cubic feet of  natural  gas
equivalent (bcfe).

For the full-year  2004,  Chesapeake  generated  net income  available to common
shareholders of $439.0 million ($1.53 per fully diluted common share), operating
cash flow of  $1,418.8  million  and  ebitda of  $1,583.6  million on revenue of
$2,709.3 million and production of 362.6 bcfe.

The company's  fourth quarter and full-year 2004 net income  available to common
shareholders and ebitda include various items that are typically not included in
published  estimates of the company's  financial  results by certain  securities
analysts. Such items and their after-tax effects on fourth quarter and full-year
reported results are described as follows:

     o    an  unrealized  mark-to-market  gain of $69.2  million  for the fourth
          quarter and a $22.8 million gain for the full year  resulting from the
          company's oil and natural gas and interest rate hedging programs;

     o    an $11.3 million loss for the fourth  quarter and a $15.7 million loss
          for the full year resulting from the early  extinguishment  of certain
          Chesapeake debt securities;

     o    a $2.9  million  loss for the  fourth  quarter  and for the full  year
          related to the settlement of certain litigation; and

     o    an adjustment to net income available to common  shareholders of $36.7
          million  representing  a loss on the  retirement  of  preferred  stock
          related to the exchange of  substantially  all of our 6.0% convertible
          preferred stock for common stock in the fourth quarter.

Adjusted  for the  above-mentioned  gains and losses  and  giving  effect to the
issuance  of common  shares for  preferred  shares,  Chesapeake's  net income to
common shareholders in the fourth quarter of 2004 would have been $153.5 million
($0.44  per fully  diluted  common  share) and  ebitda  would  have been  $464.7
million. Similarly adjusted,  Chesapeake's net income to common shareholders for
the full year 2004  would have been  $511.0  million  ($1.56  per fully  diluted
common share) and ebitda would have been $1,571.7  million.  The foregoing items
do not affect the  calculation  of  operating  cash flow.  A  reconciliation  of
operating  cash flow,  ebitda and  adjusted net income to  comparable  financial
measures calculated in accordance with generally accepted accounting  principles
is presented on pages 15-17 of this release.


      OIL AND NATURAL GAS PRODUCTION AGAIN SETS RECORD; FOURTH QUARTER 2004
      PRODUCTION UP 40% OVER FOURTH QUARTER 2003; FULL-YEAR 2004 PRODUCTION
          35% HIGHER THAN FULL-YEAR 2003 PRODUCTION; SEQUENTIAL ORGANIC
         GROWTH RATE 8% IN FOURTH QUARTER 2004 AND 20% IN FULL-YEAR 2004

Production for the 2004 fourth quarter was 102.9 bcfe, an increase of 29.6 bcfe,
or 40%, over the 73.3 bcfe  produced in the 2003 fourth  quarter and an increase
of 8.7 bcfe, or 9%, over the 94.2 bcfe produced in the 2004 third  quarter.  The
29.6 bcfe  increase in 2004's  fourth  quarter  production  over  2003's  fourth
quarter production  consisted of 14.4 bcfe (49%) generated from organic drillbit
growth and 15.2 bcfe (51%) generated from acquisitions. The 8.7 bcfe increase in
sequential  quarterly  production  consisted  of 6.7 bcfe (77%)  generated  from
organic  drillbit  growth and 2.0 bcfe (23%)  generated  from  acquisitions. The
company's  2004  fourth  quarter  production  exceeded  its  December  27,  2004
forecasted  2004  fourth  quarter  mid-point  production  by 4.4 bcfe,  or 4.5%,
because of stronger than expected drilling and operational results.

Production  for the full-year  2004 was 362.6 bcfe, an increase of 94.2 bcfe, or
35%,  over the 268.4 bcfe  produced in 2003 and an  increase  of 181.1 bcfe,  or
100%,  over the 181.5 bcfe  produced in 2002.  The 94.2 bcfe  increase in 2004's
production  over 2003's  production  consisted of 52.2 bcfe (55%) generated from
organic drillbit growth and 42.0 bcfe (45%) generated from acquisitions.

Chesapeake's  2004 organic  growth rate of 20% follows  organic growth of 18% in
2003,  6% in 2002 and 9% in 2001.  During these four years,  Chesapeake's  total
organic  growth rate has been 69% and its average annual organic growth rate has
been 14%. Total company  production  growth was 35% in 2004, 48% in 2003, 19% in
2002  and 25% in 2001  (U.S.  only).  Chesapeake  is  projecting  total  company
production  growth rates of 20% in 2005 and 11% in 2006 and organic growth rates
of 10% in 2005 and 10% in 2006.

Chesapeake's 2004 fourth quarter  production of 102.9 bcfe was comprised of 92.2
billion cubic feet of natural gas (bcf) (90% on a natural gas equivalent  basis)
and 1.79 million barrels of oil and natural gas liquids (mmbo) (10% on a natural
gas  equivalent  basis).  Chesapeake's  average  daily  production  rate for the
quarter  was 1,119  million  cubic feet of  natural  gas  equivalent  production
(mmcfe),  consisting of 1,002 mmcf of gas and 19,478  barrels of oil and natural
gas liquids.  The 2004 fourth quarter was Chesapeake's 14th consecutive  quarter
of sequential  production  growth.  During these 14 quarters,  Chesapeake's U.S.
production has increased 186%, for an average compound  quarterly growth rate of
7.8% and an average compound annual growth rate of 34.6%.

Production  for the full-year 2004 of 362.6 bcfe was comprised of 322.0 bcf (89%
on a  natural  gas  equivalent  basis)  and  6.76  mmbo  (11% on a  natural  gas
equivalent basis).  Chesapeake's  average daily production rate for the year was
991 mmcfe,  consisting of 880 mmcf of gas and 18,481  barrels of oil and natural
gas liquids.  The  full-year  2004 was  Chesapeake's  15th  consecutive  year of
sequential production growth. During these 15 years, Chesapeake's production has
increased at an average compound annual growth rate of 74%.

                                       2

       OIL AND NATURAL GAS PROVED RESERVES REACH RECORD LEVEL OF 4.9 TCFE;
          DRILLING AND ACQUISITION COSTS ARE $1.21 PER MCFE AS COMPANY
                 ADDS 2.1 TCFE; RESERVE REPLACEMENT REACHES 578%

Chesapeake began 2004 with estimated proved reserves of 3,169 bcfe and ended the
year with 4,902  bcfe,  an  increase of 1,733 bcfe,  or 55%.  During  2004,  the
company  replaced its 363 bcfe of production with an estimated 2,096 bcfe of new

proved  reserves,  for a  reserve  replacement  rate of 578% at a  drilling  and
acquisition  cost of $1.21 per  thousand  cubic feet of natural  gas  equivalent
(mcfe).  Reserve  replacement  through  the  drillbit  was 962 bcfe,  or 265% of
production  (including 141 bcfe from  performance  revisions and 5 bcfe from oil
and natural gas price  increases),  or 46% of the total  increase,  at a cost of
$1.03 per mcfe. Reserve  replacement  through  acquisitions  (reduced for 4 bcfe
sold during the year) was 1,134 bcfe,  or 313% of  production,  54% of the total
increase, at a cost of $1.36 per mcfe.

Total costs incurred,  including  drilling,  completion,  acquisition,  seismic,
leasehold, capitalized internal costs, non-cash tax basis step-up from corporate
acquisitions  ($464  million in 2004,  or $0.22 per mcfe,  frequently  booked as
goodwill  in  the  industry),   asset  retirement   obligations  and  all  other
miscellaneous costs capitalized to our oil and natural gas properties were $1.80
per mcfe.  These costs exclude future  development  costs of proved  undeveloped
reserves. A complete  reconciliation of finding and acquisition cost information
and a roll forward of proved reserves is presented on page 13 of this release.

Of the company's  estimated  proved  reserves at year-end  2004, 66% were proved
developed  compared  to 74% in 2003,  74% in 2002 and 71% in 2001.  Seventy-five
percent of this year's estimated proved reserves are covered by reports prepared
by independent  third-party reservoir engineers (as opposed to reviews or audits
of internally prepared estimates),  compared to 74% in 2003, 73% in 2002 and 71%
in 2001.

As of  December  31,  2004,  the  company's  estimated  future  net  cash  flows
discounted  at 10% before  taxes  (PV-10)  from its proved  reserves  were $10.5
billion using field  differential  adjusted  prices of $39.91 per bo (based on a
NYMEX  year-end  price of $43.39  per bo) and  $5.65  per mcf  (based on a NYMEX
year-end  price of $6.18  per mcf).  In  addition  to the PV-10  value of proved
reserves,  the Company believes that its drilling rig investments are worth $175
million,  its  midstream gas  gathering  and  compression  assets are worth $100
million, and its 4,000 bcfe of non-proved reserves are worth $1.0-2.0 billion.

Last  year's  PV-10  of  its  proved  reserves  was  $7.3  billion  using  field
differential  adjusted  prices of $30.22 per bo (based on a NYMEX year-end price
of $32.47  per bo) and $5.68 per mcf (based on a NYMEX  year-end  price of $5.97
per mcf).  Chesapeake's  PV-10 changes by  approximately  $215 million for every
$0.10 per mcf change in gas prices and approximately $40 million for every $1.00
per bo change in oil prices.  The Company's proved developed  producing reserves
decline rate is  projected to be 26% in the first year (2005),  18% in year two,
14% in year three, 12% in year four and 11% in year five.


   AVERAGE PRICES REALIZED AND HEDGING RESULTS AND HEDGING POSITIONS DETAILED

Average prices realized during the 2004 fourth quarter (including realized gains
or losses from oil and gas derivatives, but excluding unrealized gains or losses
on such  derivatives)  were $28.70 per bo and $5.50 per mcf,  for a realized gas
equivalent  price of $5.42  per  mcfe.  Chesapeake's  average  realized  pricing
differentials  to NYMEX during the fourth  quarter were a negative  $3.20 per bo
and a negative $1.19 per mcf.  Realized gains or losses from oil and natural gas
hedging activities during the quarter generated a $15.40 loss per bo and a $0.65
loss per mcf, for a 2004 fourth quarter  realized hedging loss of $87.3 million,
or $0.85 per mcfe.

Average prices realized  during the full-year 2004 (including  realized gains or
losses from oil and gas derivatives, but excluding unrealized gains or losses on
such  derivatives)  were  $28.33 per bo and $5.29 per mcf,  for a  realized  gas
equivalent  price of $5.23  per  mcfe.  Chesapeake's  average  realized  pricing
differentials  to NYMEX during 2004 were a negative  $2.35 per bo and a negative
$0.77  per mcf.  Realized  gains or  losses  from oil and  natural  gas  hedging
activities  during the year  generated a $10.24 loss per bo and a $0.27 loss per
mcf, for a full-year 2004 realized hedging loss of $154.9 million,  or $0.43 per
mcfe. This compares to oil and gas hedging gains of $184.0 million realized from
2001-03.

In the past two months,  Chesapeake has added to its hedge positions in 2005 and
2006.  The  following  tables  compare  Chesapeake's  projected  2005-06 oil and
natural gas production  volumes that have been hedged as of February 22, 2005 to
what had been previously hedged as of December 27, 2004.


                    HEDGED POSITIONS AS OF FEBRUARY 22, 2005
                                              OIL                                  NATURAL GAS
                              -------------------------------------    ------------------------------------
QUARTER OR YEAR                   % HEDGED             $ NYMEX             % HEDGED            $ NYMEX
==========================    =================    ================    =================    ===============
                                                                                    
2005 1Q                             53%                $41.87                68%                $6.82
2005 2Q                             61%                $42.39                54%                $5.98
2005 3Q                             15%                $38.00                46%                $5.96
2005 4Q                              9%                $32.15                26%                $5.87
- --------------------------    -----------------    ----------------    -----------------    ---------------
- --------------------------    -----------------    ----------------    -----------------    ---------------
2005 Total                          34%                $41.02                48%                $6.24
==========================    =================    ================    =================    ===============
==========================    =================    ================    =================    ===============
2006                                 -                    -                   9%                $6.15
==========================    =================    ================    =================    ===============




                    HEDGED POSITIONS AS OF DECEMBER 27, 2004
                                              OIL                                  NATURAL GAS
                              -------------------------------------    ------------------------------------
QUARTER OR YEAR                   % HEDGED             $ NYMEX             % HEDGED            $ NYMEX
==========================    =================    ================    =================    ===============

                                                                                    
2005 1Q                             52%                $41.76                67%                $6.80
2005 2Q                             52%                $41.63                39%                $5.78
2005 3Q                              8%                $31.16                34%                $5.75
2005 4Q                              8%                $30.62                23%                $5.74
- --------------------------    -----------------    ----------------    -----------------    ---------------
- --------------------------    -----------------    ----------------    -----------------    ---------------
2005 Total                          30%                $40.20                40%                $6.17
==========================    =================    ================    =================    ===============
==========================    =================    ================    =================    ===============
2006                                 -                    -                   9%                $6.15
==========================    =================    ================    =================    ===============


Depending  on changes in oil and natural gas  futures  markets and  management's
view of underlying oil and natural gas supply and demand trends,  Chesapeake may
either  increase or decrease  its  hedging  positions  at any time in the future
without notice.

The  company's  initial  2005 first  quarter  forecast and updated 2005 and 2006
forecasts  are  attached to this release in an Outlook  dated  February 22, 2005
labeled as Schedule  "A".  This Outlook has been changed from the Outlook  dated
December  27, 2004  (attached  as Schedule "B" for  investors'  convenience)  to
reflect various updated information.

                                       3

      KEY OPERATIONAL AND FINANCIAL STATISTICS ARE SUMMARIZED BELOW FOR THE
                   2004 FOURTH QUARTER AND THE FULL-YEAR 2004

The table  below  summarizes  Chesapeake's  key  results  during the 2004 fourth
quarter and compares them to the 2004 third quarter and the 2003 fourth quarter:



                                                                                     Three Months Ended:
                                                                                     -------------------
                                                                        12/31/04            9/30/04           12/31/03
                                                                        --------            -------           --------
                                                                                                      
Average daily production (in mmcfe)                                      1,119               1,024                797
Gas as % of total production                                                90                  88                 90
Natural gas production (in bcf)                                           92.2                83.2               66.3
Average realized gas price ($/mcf) (a)                                    5.50                5.17               5.15
Oil production (in mbbls)                                                1,792               1,834              1,165
Average realized oil price ($/bo) (a)                                    28.70               29.15              23.76
Natural gas equivalent production (in bcfe)                              102.9                94.2               73.3
Gas equivalent realized price ($/mcfe) (a)                                5.42                5.13               5.03
Net marketing income ($/mcfe)                                              .07                 .04                .04
General and administrative costs ($/mcfe) (b)                            (.08)               (.09)              (.10)
Production taxes ($/mcfe)                                                (.34)               (.33)              (.28)
Production expenses ($/mcfe)                                             (.55)               (.57)              (.49)
Interest expense ($/mcfe) (a)                                            (.43)               (.45)              (.51)
DD&A of oil and gas properties ($/mcfe)                                 (1.67)              (1.63)             (1.41)
D & A of other assets ($/mcfe)                                           (.09)               (.08)              (.06)
Operating cash flow ($ in millions) (c)                                  423.7               353.4              262.4
Operating cash flow ($/mcfe)                                              4.12                3.75               3.58
Ebitda ($ in millions) (d)                                               550.1               361.3              257.8
Ebitda ($/mcfe)                                                           5.34                3.83               3.52
Net income to common shareholders ($ in millions)                        163.2                85.6               62.4


          (a)  includes the effects of realized  gains or (losses) from hedging,
               but does not include the effects of unrealized  gains or (losses)
               from hedging
          (b)  excludes   expenses   associated   with   non-cash    stock-based
               compensation
          (c)  defined as cash flow  provided  by  operating  activities  before
               changes in assets and  liabilities
          (d)  defined as income  before  income taxes,  interest  expense,  and
               depreciation, depletion and amortization expense

In addition, the table below summarizes  Chesapeake's key statistics during 2004
and compares them to the prior two years' results:



                                                                                      Year Ended:
                                                                                      -----------
                                                                    12/31/04            12/31/03           12/31/02
                                                                    --------            --------           --------
                                                                                                  
     Average daily production (in mmcfe)                               991                 735                497
     Gas as % of total production                                       89                  90                 89
     Natural gas production (in bcf)                                 322.0               240.4              160.7
     Average realized gas price ($/mcf) (a)                           5.29                4.85               3.54
     Oil production (in mbbls)                                       6,764               4,665              3,466
     Average realized oil price ($/bbl) (a)                          28.33               25.85              25.22
     Natural gas equivalent production (in bcfe)                     362.6               268.4              181.5
     Gas equivalent realized price ($/mcfe) (a)                       5.23                4.79               3.61
     Net marketing income ($/mcfe)                                     .05                 .04                .03
     General and administrative costs ($/mcfe) (b)                   (.09)               (.08)              (.10)
     Production taxes ($/mcfe)                                       (.29)               (.29)              (.17)
     Lease operating expenses ($/mcfe)                               (.56)               (.51)              (.54)
     Interest expense ($/mcfe) (a)                                   (.45)               (.55)              (.61)
     DD&A of oil and gas properties ($/mcfe)                        (1.61)              (1.38)             (1.22)
     D & A of other assets ($/mcfe)                                  (.08)               (.06)              (.08)
     Operating cash flow ($ in millions) (c)                       1,418.8               903.9              412.5
     Operating cash flow ($/mcfe)                                     3.91                3.37               2.27
     Ebitda ($ in millions) (d)                                    1,583.6             1,041.6              414.4
     Ebitda ($/mcfe)                                                  4.37                3.88               2.28
     Net income to common shareholders ($ in millions)               439.0               290.5               30.2


          (a)  includes the effects of realized  gains or (losses) from hedging,
               but does not include the effects of unrealized  gains or (losses)
               from hedging
          (b)  excludes   expenses   associated   with   non-cash   stock  based
               compensation
          (c)  defined as cash flow  provided  by  operating  activities  before
               changes in assets and liabilities
          (d)  defined as income  before income taxes and  cumulative  effect of
               accounting change, interest expense, and depreciation,  depletion
               and amortization expense

                                       4

   COMPANY'S LEASEHOLD AND 3-D SEISMIC INVENTORIES NOW EXCEED 3.3 MILLION AND
            9.9 MILLION NET ACRES; IDENTIFIED NON-PROVED RESERVES IN
             COMPANY'S EXTENSIVE GAS RESOURCE PLAYS EXCEED 4.0 TCFE


Chesapeake's  exploratory  and  development  drilling  programs  and  production
enhancement  operations  on its  existing and  acquired  properties  continue to
produce  operational results that exceed the company's forecasts and distinguish
the company among its peers. During 2004, Chesapeake drilled 561 gross (425 net)
operated wells and participated in another 890 gross (121 net) wells operated by
other   companies.   The   company's   drilling   success   rate   was  96%  for
company-operated  wells  and  96%  for  non-operated  wells.  During  the  year,
Chesapeake  invested  $756  million in  operated  wells  (using an average of 56
operated rigs during 2004), $236 million in non-operated wells (using an average
of approximately 65 non-operated rigs during 2004) and $300 million in acquiring
new 3-D  seismic  data and new  leases  (exclusive  of leases  acquired  through
acquisitions).

The key to Chesapeake's strong organic growth rates during 2004 and in the past
four years was our early  recognition  that oil and gas prices were  undergoing
structural  change. We subsequently  reacted by investing more than $1.3 billion
in new leasehold and 3-D seismic acquisitions. In addition, during the past four
years, we have significantly strengthened our technical capabilities by tripling
our land, geoscience and engineering staff to more than 400 employees.

In addition to making  significant  additions  to our  existing  core  leasehold
positions in the Anadarko and Arkoma Basins,  South Texas,  Texas Gulf Coast and
Permian  Basin  projects,   Chesapeake  has  also  been  aggressively   building
significant  leasehold  positions in the following gas resource plays: Sahara in
the northwestern  Anadarko Basin  (approximately  600,000  prospective net acres
acquired to date),  the  Mountain  Front Deep  Springer  play in the western and
southern Anadarko Basin (approximately 100,000 prospective net acres acquired to
date),  the Granite Wash and  Cherokee/Atoka  Wash plays in the western Anadarko
Basin  (approximately  200,000  prospective  net acres  acquired  to date),  the
Hartshorne  Coal and the Caney,  Woodford  and  Fayetteville  Shale plays of the
Arkoma Basin  (approximately  250,000  prospective  acres acquired to date), the
Barnett Shale play in North Texas  (approximately  30,000  prospective net acres
acquired to date, mainly in northern Johnson County),  the Cotton Valley play in
Northern Louisiana's Sligo Field (25,000 prospective net acres acquired to date)
and, most  recently,  the Haley Deep play in West Texas  (approximately  100,000
prospective net acres acquired to date).

Chesapeake  believes  it has built  the  largest  onshore  U.S.  inventories  of
leasehold and 3-D seismic in the industry (more than 3.3 million and 9.9 million
net acres,  respectively)  and believes it has identified more than a seven-year
drilling backlog of 7,000 locations on which the company expects to develop more
than 4.0  trillion  cubic feet of natural gas  equivalent  (tcfe) of  internally
estimated non-proved reserves.

                  BALANCE SHEET CONTINUES TO STRENGTHEN IN 2004

As of December 31, 2004,  Chesapeake's  long-term  debt was $3.1 billion and its
stockholders' equity was $3.2 billion, for a debt-to-total  capitalization ratio
of 49%,  compared  to a  debt-to-total  capitalization  ratio of 54% at year-end
2003. At year-end 2004, the company's  estimated  proved reserves were 4.9 tcfe,
for long-term debt per mcfe of proved  reserves of $0.63,  compared to $0.65 per
mcfe at year-end 2003. Pro forma for the BRG acquisition that closed on February
1,  2005,   Chesapeake's   estimated   proved  reserves  were  5.1  tcfe.  Given
Chesapeake's  strong  reserve  replacement  record  through  the  drillbit,  low
operating costs and high returns on invested capital,  the company believes that
it will continue to strengthen its balance sheet in the years ahead.

In late January 2005, Chesapeake increased its financial flexibility by amending
its secured  revolving  bank credit  facility to expand the  borrowing  base and
amount available to $1.25 billion and to extend the maturity to January 2010.

                                       5

                               MANAGEMENT COMMENTS

Aubrey K. McClendon,  Chesapeake's Chief Executive Officer, commented,  "Today's
announcement  of very strong  operational  and financial  results for the fourth
quarter and  full-year  2004  provides  compelling  evidence  that  Chesapeake's
business  strategy  continues  to  create  significant  shareholder  value.  Key
measures reflecting this increase in shareholder value are:

     o    a record level of proved  reserves,  production,  net income to common
          shareholders, cash flow and ebitda;

     o    exceptional   organic  growth  for  the  2004fourth  quarter  and  the
          full-year 2004, organic growth that we believe is the best performance
          among all public mid- and large-cap E&P companies;

     o    a 9% increase in  sequential  quarterly  production in the 2004 fourth
          quarter  compared  to the 2004  third  quarter;

     o    a 40% increase in year-over-year  fourth quarter  production;

     o    a 35% increase in full-year 2004 production over 2003 production;

     o    a 20% increase in estimated 2005 production over 2004 production;

     o    an 11% increase in  estimated  2006  production  over  estimated  2005
          production;

     o    reserve replacement for the year of 578% at a drilling and acquisition
          cost of $1.21 per mcfe;

     o    excellent  operating cost control and high returns on equity and total
          capital;  and

     o    a seven-year inventory of drilling projects with estimated development
          potential of at least 4.0 tcfe of estimated non-proved reserves in the
          years ahead.

The company's  business strategy has worked very well for our shareholders since
our IPO on February 4, 1993,  generating an approximate  1,400%  increase in our
common stock price  during the past 12 years.  Our  business  strategy  features
delivering  growth  through a balance  of  acquisitions  and  organic  drilling,
focusing  on natural  gas to take  advantage  of strong  long-term  natural  gas
supply/demand  fundamentals and building  dominant regional scale to achieve low
operating costs and high returns on capital. We believe Chesapeake's  management
team can continue the successful execution of the company's distinctive business
strategy  and  continue to deliver  significant  shareholder  value for years to
come."

                           CONFERENCE CALL INFORMATION

A conference call has been scheduled for Wednesday morning, February 23, 2005 at
9:00 a.m. EST to discuss this earnings  release.  The telephone number to access
the  conference  call is  913.981.5520.  For those unable to  participate in the
conference  call, a replay will be available  from 12:00 p.m. EST,  February 23,
2005  through  midnight  EST on  February  27,  2005.  The  number to access the
conference  call  replay  is  719.457.0820  and the  passcode  is  9640052.  The
conference  call will also be simulcast live on the Internet and can be accessed
at  www.chkenergy.com  by  selecting  "Conference  Calls"  under  the  "Investor
Relations" section.  The webcast of the conference call will be available on the
website for one year.

                                       6

THIS  PRESS  RELEASE  AND THE  ACCOMPANYING  OUTLOOKS  INCLUDE  "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
GIVE OUR CURRENT  EXPECTATIONS  OR  FORECASTS  OF FUTURE  EVENTS.  THEY  INCLUDE
ESTIMATES OF OIL AND GAS RESERVES,  EXPECTED OIL AND GAS  PRODUCTION  AND FUTURE
EXPENSES, PROJECTIONS OF FUTURE OIL AND GAS PRICES, PLANNED CAPITAL EXPENDITURES
FOR DRILLING, LEASEHOLD ACQUISITIONS AND SEISMIC DATA, AND STATEMENTS CONCERNING
ANTICIPATED  CASH FLOW AND  LIQUIDITY,  BUSINESS  STRATEGY  AND OTHER  PLANS AND
OBJECTIVES FOR FUTURE OPERATIONS.  DISCLOSURES  CONCERNING  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  RESULTS TO DIFFER  MATERIALLY  FROM  EXPECTED
RESULTS ARE  DESCRIBED  UNDER "RISK  FACTORS" IN OUR EXCHANGE  OFFER  PROSPECTUS
DATED  NOVEMBER  30,  2004 (AS  AMENDED ON  DECEMBER  16,  2004)  FILED WITH THE
SECURITIES  AND  EXCHANGE  COMMISSION  ON DECEMBER  20,  2004.  THEY INCLUDE THE
VOLATILITY OF OIL AND GAS PRICES;  ADVERSE EFFECTS OUR SUBSTANTIAL  INDEBTEDNESS
AND PREFERRED STOCK  OBLIGATIONS COULD HAVE ON OUR OPERATIONS AND FUTURE GROWTH;
OUR  ABILITY TO  COMPETE  EFFECTIVELY  AGAINST  STRONG  INDEPENDENT  OIL AND GAS
COMPANIES  AND MAJORS;  POSSIBLE  FINANCIAL  LOSSES AND  SIGNIFICANT  COLLATERAL
REQUIREMENTS  AS A  RESULT  OF  OUR  COMMODITY  PRICE  AND  INTEREST  RATE  RISK
MANAGEMENT  ACTIVITIES;  UNCERTAINTIES  INHERENT IN ESTIMATING QUANTITIES OF OIL
AND GAS  RESERVES,  INCLUDING  RESERVES WE ACQUIRE;  PROJECTING  FUTURE RATES OF
PRODUCTION  AND THE TIMING OF  DEVELOPMENT  EXPENDITURES;  EXPOSURE TO POTENTIAL
LIABILITIES  OF  ACQUIRED  PROPERTIES  AND  COMPANIES;  OUR  ABILITY  TO REPLACE
RESERVES; THE AVAILABILITY OF CAPITAL; WRITEDOWNS OF OIL AND GAS CARRYING VALUES
IF COMMODITY PRICES DECLINE; ENVIRONMENTAL AND OTHER CLAIMS IN EXCESS OF INSURED
AMOUNTS RESULTING FROM DRILLING AND PRODUCTION  OPERATIONS;  AND THE LOSS OF KEY
PERSONNEL.  WE CAUTION YOU NOT TO PLACE UNDUE RELIANCE ON THESE  FORWARD-LOOKING
STATEMENTS,  WHICH  SPEAK  ONLY AS OF THE  DATE OF THIS  PRESS  RELEASE,  AND WE
UNDERTAKE NO OBLIGATION TO UPDATE THIS INFORMATION.

OUR  PRODUCTION  FORECASTS  ARE  DEPENDENT  UPON  MANY  ASSUMPTIONS,   INCLUDING
ESTIMATES OF PRODUCTION  DECLINE  RATES FROM  EXISTING  WELLS AND THE OUTCOME OF
FUTURE DRILLING  ACTIVITY.  ALTHOUGH WE BELIEVE THE  EXPECTATIONS  AND FORECASTS
REFLECTED IN THESE AND OTHER FORWARD-LOOKING  STATEMENTS ARE REASONABLE,  WE CAN
GIVE NO ASSURANCE THEY WILL PROVE TO HAVE BEEN CORRECT.  THEY CAN BE AFFECTED BY
INACCURATE ASSUMPTIONS OR BY KNOWN OR UNKNOWN RISKS AND UNCERTAINTIES.

THE SEC HAS GENERALLY PERMITTED OIL AND GAS COMPANIES,  IN FILINGS MADE WITH THE
SEC, TO DISCLOSE ONLY PROVED RESERVES THAT A COMPANY HAS  DEMONSTRATED BY ACTUAL
PRODUCTION  OR  CONCLUSIVE  FORMATION  TESTS  TO  BE  ECONOMICALLY  AND  LEGALLY
PRODUCIBLE UNDER EXISTING  ECONOMIC AND OPERATING  CONDITIONS.  WE USE THE TERMS
"PROBABLE" AND "POSSIBLE"  RESERVES OR OTHER DESCRIPTIONS OF VOLUMES OF RESERVES
POTENTIALLY  RECOVERABLE THROUGH ADDITIONAL DRILLING OR RECOVERY TECHNIQUES THAT
THE SEC'S  GUIDELINES  MAY  PROHIBIT US FROM  INCLUDING IN FILINGS WITH THE SEC.
THESE  ESTIMATES ARE BY THEIR NATURE MORE  SPECULATIVE  THAN ESTIMATES OF PROVED
RESERVES  AND  ACCORDINGLY  ARE SUBJECT TO  SUBSTANTIALLY  GREATER RISK OF BEING
ACTUALLY REALIZED BY THE COMPANY.

CHESAPEAKE  ENERGY  CORPORATION  IS THE FOURTH LARGEST  INDEPENDENT  PRODUCER OF
NATURAL GAS 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,  PERMIAN BASIN, SOUTH TEXAS, TEXAS GULF COAST
AND ARK-LA-TEX  REGIONS OF THE UNITED STATES.  THE COMPANY'S INTERNET ADDRESS IS
WWW.CHKENERGY.COM.


                                       7



                                           CHESAPEAKE ENERGY CORPORATION
                                       CONSOLIDATED STATEMENTS OF OPERATIONS
                                        ($ in 000's, except per share data)
                                                    (unaudited)
========================================================================================================================
THREE MONTHS ENDED:                                               December 31, 2004          December 31, 2003
                                                                  $              $/mcfe      $               $/mcfe
                                                                -----------    ----------    ------------   ---------
REVENUES:
                                                                                                
  Oil and gas sales                                              665,782            6.47        345,697        4.72
  Oil and gas marketing sales                                    276,269            2.68        111,044        1.51
                                                                --------        --------      ---------     -------
    Total Revenues                                               942,051            9.15        456,741        6.23
                                                                --------        --------      ---------     -------

OPERATING COSTS:
  Production expenses                                             56,321            0.55         35,919        0.49
  Production taxes                                                35,372            0.34         20,557        0.28
  General and administrative expenses:
    General and administrative (excluding stock-based
    compensation)                                                  8,270            0.08          7,068        0.09
    Stock-based compensation                                       1,703            0.02            433        0.01
  Oil and gas marketing expenses                                 269,109            2.61        108,224        1.48
  Oil and gas depreciation, depletion, and amortization          171,900            1.67        103,334        1.41
  Depreciation and amortization of other assets                    9,030            0.09          4,146        0.06
  Provision for legal settlements                                  4,500            0.04          5,400        0.07
                                                                --------        --------      ---------     -------
    Total Operating Costs                                        556,205            5.40        285,081        3.89
                                                                --------        --------      ---------     -------

INCOME FROM OPERATIONS                                           385,846            3.75        171,660         2.34
                                                                --------        --------      ---------     --------

OTHER INCOME (EXPENSE):
  Interest and other income                                          913            0.01          1,471         0.02
  Interest expense                                               (43,288)          (0.42)       (38,465)       (0.52)
  Loss on repurchases or exchanges of Chesapeake debt            (17,632)          (0.17)       (20,759)       (0.28)
  Loss on investment in Seven Seas                                    --              --         (2,015)       (0.03)
                                                                --------        --------      ---------     --------
    Total Other Income (Expense)                                 (60,007)          (0.58)       (59,768)       (0.81)
                                                                --------        --------      ---------     --------

Income Before Income Taxes                                       325,839            3.17        111,892         1.53

Income Tax Expense:
  Current                                                             --              --          4,670         0.06
  Deferred                                                       117,301            1.14         37,849         0.52
                                                                --------        --------      ---------     --------
   Total Income Tax Expense                                      117,301            1.14         42,519         0.58

NET INCOME                                                       208,538            2.03         69,373         0.95
                                                                --------        --------      ---------     --------

Preferred stock dividends                                         (8,707)          (0.08)        (6,985)       (0.10)
Loss on conversion/exchange of preferred stock                   (36,678)          (0.36)            --          --
                                                                --------        --------      ---------     --------

NET INCOME AVAILABLE TO COMMON SHAREHOLDERS                      163,153            1.59         62,388        0.85
                                                                ========        ========      =========     ========

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

EARNINGS PER COMMON SHARE:

   Basic                                                        $   0.59                       $  0.29
                                                                ========                      ========
  Assuming dilution                                             $   0.52                       $  0.25
                                                                ========                      ========

WEIGHTED AVERAGE COMMON AND COMMON
 EQUIVALENT SHARES OUTSTANDING (in 000's):

  Basic                                                          277,410                       216,571
                                                                ========                      ========
  Assuming dilution                                              328,029                       273,169
                                                                ========                      ========


                                       8



                                           CHESAPEAKE ENERGY CORPORATION
                                       CONSOLIDATED STATEMENTS OF OPERATIONS
                                        ($ in 000's, except per share data)
                                                    (unaudited)
========================================================================================================================
TWELVE MONTHS ENDED:                                              December 31, 2004          December 31, 2003
                                                                $               $/mcfe        $            $/mcfe
                                                              -------------   -----------     -----------  ----------
REVENUES:
                                                                                                
  Oil and gas sales                                            1,936,176            5.34      1,296,822         4.83
  Oil and gas marketing sales                                    773,092            2.13        420,610         1.57
                                                               ---------        --------      ---------     -------
    Total Revenues                                             2,709,268            7.47      1,717,432         6.40
                                                               ---------        --------      ---------     -------

OPERATING COSTS:
  Production expenses                                            204,821            0.56        137,583         0.51
  Production taxes                                               103,931            0.29         77,893         0.29
  General and administrative expenses:
    General and administrative (excluding stock-based
    compensation)                                                 32,217            0.09         22,808         0.09
    Stock-based compensation                                       4,828            0.01            945           --
  Oil and gas marketing expenses                                 755,314            2.08        410,288         1.53
  Oil and gas depreciation, depletion, and amortization          582,137            1.61        369,465         1.38
  Depreciation and amortization of other assets                   29,185            0.08         16,793         0.06
  Provision for legal settlements                                  4,500            0.01          6,402         0.02
                                                               ---------        --------      ---------     --------
    Total Operating Costs                                      1,716,933            4.73      1,042,177         3.88
                                                               ---------        --------      ---------     --------

INCOME FROM OPERATIONS                                           992,335            2.74        675,255         2.52
                                                               ---------        --------      ---------     --------

OTHER INCOME (EXPENSE):
  Interest and other income                                        4,476            0.01          2,827         0.01
  Interest expense                                              (167,328)          (0.46)      (154,356)       (0.57)
  Loss on repurchases or exchanges of Chesapeake debt            (24,557)          (0.07)       (20,759)       (0.08)
  Loss on investment in Seven Seas                                    --              --         (2,015)       (0.01)
                                                                --------        --------      ---------     --------
    Total Other Income (Expense)                                (187,409)          (0.52)      (174,303)       (0.65)
                                                                --------        --------      ---------     --------

Income Before Income Taxes and Cumulative Effect
  of Accounting Change                                           804,926            2.22        500,952         1.87

Income Tax Expense:
  Current                                                             --              --          5,000        0.02
  Deferred                                                       289,771            0.80        185,360        0.69
  --------                                                      --------        --------      ---------     -------
    Total Income Tax Expense                                     289,771            0.80        190,360        0.71
    ------------------------                                    --------        --------      ---------     -------

NET INCOME BEFORE CUMULATIVE EFFECT OF
  ACCOUNTING CHANGE, NET OF TAX                                  515,155            1.42        310,592         1.16
                                                                --------        --------      --------      --------
Cumulative Effect of Accounting Change, Net of
  Income Tax of $1,464,000                                            --              --          2,389         0.01
                                                                --------        --------      --------      --------

NET INCOME                                                       515,155            1.42        312,981         1.17

Preferred stock dividends                                        (39,506)          (0.11)       (22,469)       (0.09)
Loss on conversion/exchange of preferred stock                   (36,678)          (0.10)            --           --
                                                                --------        --------      ---------     --------
NET INCOME AVAILABLE TO COMMON SHAREHOLDERS
                                                                 438,971            1.21        290,512         1.08
                                                                ========        ========      =========     ========
- ------------------------------------------------------------------------------------------------------------------------
EARNINGS PER COMMON SHARE:

   Basic
   Income Before Cumulative Effect of Accounting Change         $   1.73                      $   1.36
      Cumulative Effect of Accounting Change                          --                          0.02
                                                                --------                      --------
      Net Income                                                $  1.73                       $   1.38
                                                                ========                      ========

   Assuming dilution
      Income Before Cumulative Effect of Accounting Change      $   1.53                      $   1.20
      Cumulative Effect of Accounting Change                          --                          0.01
                                                                --------                      --------
      Net Income                                                $   1.53                      $   1.21
                                                                ========                      ========

WEIGHTED AVERAGE COMMON AND COMMON
 EQUIVALENT SHARES OUTSTANDING (in 000's):

  Basic                                                          253,212                       211,203
                                                                 =======                     =========
  Assuming dilution                                              305,718                       258,567
                                                                 =======                     =========


                                       9



                                              CHESAPEAKE ENERGY CORPORATION
                                               CONSOLIDATED BALANCE SHEETS
                                                        (in 000's)
                                                       (unaudited)
=======================================================================================================================
                                                                              December 31,       December 31,
                                                                                  2004               2003
- -----------------------------------------------------------------------------------------------------------------------
                                                                                          
Cash                                                                       $       6,896        $       40,581
Other current assets                                                             560,644               301,823
                                                                           -------------         -------------
CURRENT ASSETS                                                                   567,540                342,404
                                                                           -------------         --------------

Property and equipment (net)                                                   7,444,384              4,133,117
Other assets                                                                     232,585                 96,770
                                                                           -------------         --------------
     TOTAL ASSETS                                                             $8,244,509        $     4,572,291
                                                                           =============         ==============

Current liabilities                                                        $     963,953        $      513,156
Long term debt                                                                 3,075,109             2,057,713
Asset retirement obligation                                                       73,718                48,812
Long term liabilities                                                             34,973                28,774
Deferred tax liability                                                           933,873                191,026
                                                                           -------------         --------------
     TOTAL LIABILITIES                                                         5,081,626              2,839,481

STOCKHOLDERS' EQUITY                                                           3,162,883              1,732,810
                                                                           -------------         --------------

TOTAL LIABILITIES & STOCKHOLDERS' EQUITY                                     $ 8,244,509        $     4,572,291
                                                                           =============         ==============

COMMON SHARES OUTSTANDING                                                        311,869                216,784
                                                                           =============         ==============



                                           CHESAPEAKE     ENERGY     CORPORATION
                                       RECONCILIATION  OF 2004 COSTS INCURRED
                                        ($ in 000's, except per unit amounts)
                                                    (unaudited)
         ========================================================================================================
                                                                                      Reserves
                                                                         Cost         (in mmcfe)      Per Unit
                                                                   -------------      ----------      --------
                                                                                          
     Exploration and development costs (a)                         $     991,903        962,246         1.03
     Acquisition of proved properties                                  1,541,920      1,137,463         1.36
       Subtotal                                                        2,533,823      2,099,709         1.21

     Acquisition of unproved properties                                  570,495              --          --
     Divestitures                                                        (12,048)         (3,940)      (3.06)
     Leasehold acquisition costs                                         110,530              --          --
     Geological and geophysical costs                                     55,618              --          --
        Adjusted subtotal                                              3,258,418       2,095,769        1.55
     Tax basis step-up                                                   463,949              --          --
     Asset retirement obligation and other                                41,924              --          --
       Total                                                       $   3,764,291       2,095,769        1.80


   (a) Reserves include revisions to previous estimates

                             CHESAPEAKE ENERGY CORPORATION
                                ROLLFORWARD OF RESERVES
                                     (unaudited)
        =======================================================================
                                                                        Mmcfe
        -----------------------------------------------------------------------
        Beginning balance, 12/31/03                                  3,168,575
        Production                                                    (362,593)
        Acquisitions                                                 1,137,463
        Divestitures                                                    (3,940)
        Revisions-performance                                          140,568
        Revisions-price                                                  4,950
        Extensions and discoveries                                     816,728
        Ending balance, 12/31/04                                     4,901,751

        Reserve replacement                                          2,095,769
        Reserve replacement rate                                           578%
        =======================================================================


                                       10




                                              CHESAPEAKE ENERGY CORPORATION
                                 SUPPLEMENTAL DATA - OIL & GAS SALES AND INTEREST EXPENSE

                                                                             Three Months Ended             Twelve Months Ended
                                                                    ------------------------------- -------------------------------
                                                                               December 31,                   December 31,
                                                                    ------------------------------- -------------------------------
                                                                           2004           2003             2004          2003
                                                                    --------------   -------------- --------------   ---------------

      Oil and Gas Sales ($ in thousands):
                                                                                                           
        Oil sales                                                     $   79,033        $  30,819     $  260,915       $  132,630
        Oil derivatives - realized gains (losses)                        (27,595)          (3,134)       (69,267)          (12,058)
        Oil derivatives - unrealized gains (losses)                       25,379           (8,447)         3,454            (9,440)
                                                                      ----------        ---------     ----------       ----------

              Total oil sales
                                                                      $   76,817        $  19,238     $  195,102       $   111,132
                                                                      ----------        ---------     ----------       -----------

        Gas sales                                                     $  566,492        $ 281,452      1,789,275       $ 1,171,050
        Gas derivatives - realized gains (losses)                        (59,658)          59,697        (85,634)           (5,331)
        Gas derivatives - unrealized gains (losses)                       82,131          (14,690)        37,433            19,971
                                                                      ----------        ---------     ----------       ----------

              Total gas sales                                         $  588,965        $ 326,459     $1,741,074        1,185,690
                                                                      ----------        ---------     ----------        ---------

              Total oil and gas sales                                 $  665,782        $ 345,697     $1,936,176       $1,296,822
                                                                      ==========        =========     ==========       ==========

      Average Sales Price (excluding gains (losses) on
      derivatives):
        Oil ($ per bbl)                                               $    44.10        $   26.45     $    38.57       $    28.43
        Gas ($ per mcf)                                               $     6.15        $    4.25     $     5.56       $     4.87
        Gas equivalent ($ per mcfe)                                   $     6.27        $    4.26     $     5.65       $     4.86

      Average Sales Price (excluding unrealized gains (losses) on
        derivatives):
        Oil ($ per bbl)                                               $    28.70        $   23.76     $    28.33       $    25.85
        Gas ($ per mcf)                                               $     5.50        $    5.15     $     5.29       $     4.85
        Gas equivalent ($ per mcfe)                                   $     5.42        $    5.03     $     5.23       $     4.79

      Interest Expense ($ in thousands):
        Interest                                                      $  (44,446)       $ (38,665)    $ (162,781)         (151,676)
        Derivatives - realized (gains) losses                                607            1,406            791            3,859
        Derivatives - unrealized (gains) losses                              551           (1,206)        (5,338)           (6,539)
                                                                      ----------        ---------     ----------       -----------
              Total Interest Expense                                  $  (43,288)       $ (38,465)    $ (167,328)      $  (154,356)
                                                                      ==========        =========     ==========       ===========



                                                    CHESAPEAKE ENERGY CORPORATION
                                                CONDENSED CONSOLIDATED CASH FLOW DATA
                                                               (in 000's)
                                                              (unaudited)
                      ===============================================================================================
                      THREE MONTHS ENDED:                                           December 31,       December 31,
                                                                                        2004               2003
                      -----------------------------------------------------------------------------------------------
                                                                                                
                      Cash provided by operating activities                          $  410,349       $ 292,085

                       Cash (used in) investing activities                             (712,963)        (476,449)

                      Cash provided by financing activities                             260,437         186,467

                      ===============================================================================================
                      ===============================================================================================
                      TWELVE MONTHS ENDED:                                          December 31,       December 31,
                                                                                        2004               2003
                      -----------------------------------------------------------------------------------------------

                      Cash provided by operating activities                          $1,448,555       $ 945,602

                      Cash (used in) investing activities                            (3,381,204)      (2,077,217)

                      Cash provided by financing activities                           1,898,964          924,559

                      ===============================================================================================


                                       11



                                              CHESAPEAKE ENERGY CORPORATION
                                       RECONCILIATION OF CERTAIN FINANCIAL MEASURES
                                                        (in 000's)
                                                       (unaudited)

     ===================================================================================================
     THREE MONTHS ENDED:                                             December 31,     December 31,
                                                                         2004             2003
     ---------------------------------------------------------------------------------------------------
                                                                               
     CASH PROVIDED BY OPERATING ACTIVITIES                         $     410,349     $   292,085

     Adjustments:
     Changes in assets and liabilities                                    13,330          (29,647)
                                                                   -------------     ------------

     OPERATING CASH FLOW*                                          $     423,679     $   262,438


*Operating cash flow represents net cash provided by operating activities before
changes in assets and  liabilities.  Operating  cash flow is  presented  because
management  believes it is a useful  adjunct to net cash  provided by  operating
activities under accounting  principles  generally accepted in the United States
(GAAP).  Operating cash flow is widely  accepted as a financial  indicator of an
oil and gas company's  ability to generate cash which is used to internally fund
exploration  and  development  activities  and to service debt.  This measure is
widely  used by  investors  and rating  agencies in the  valuation,  comparison,
rating  and  investment  recommendations  of  companies  within  the oil and gas
exploration  and  production  industry.  Operating cash flow is not a measure of
financial  performance under GAAP and should not be considered as an alternative
to cash flows from operating, investing, or financing activities as an indicator
of cash flows, or as a measure of liquidity.




     ==================================================================================================
         THREE MONTHS ENDED:                                          December 31,     December 31,
                                                                         2004             2003
     --------------------------------------------------------------------------------------------------
                                                                               
         Net income                                                $     208,538     $     69,373

         Income tax expense                                              117,301           42,519
         Interest expense                                                 43,288           38,465
         Depreciation and amortization of other assets                     9,030            4,146
         Oil and gas depreciation, depletion and amortization            171,900          103,334
                                                                   ---------------   ------------

         EBITDA**                                                  $     550,057    $    257,837


**Ebitda  represents  net income (loss) before  cumulative  effect of accounting
change,  income tax  expense  (benefit),  interest  expense,  and  depreciation,
depletion  and  amortization  expense.  Ebitda is  presented  as a  supplemental
financial  measurement  in the  evaluation of our  business.  We believe that it
provides  additional  information  regarding our ability to meet our future debt
service, capital expenditures and working capital requirements.  This measure is
widely  used by  investors  and rating  agencies in the  valuation,  comparison,
rating and investment  recommendations of companies.  Ebitda is also a financial
measurement  that,  with  certain  negotiated  adjustments,  is  reported to our
lenders  pursuant  to our bank  credit  agreement  and is used in the  financial
covenants in our bank credit agreement and our senior note indentures. Ebitda is
not a measure of financial performance under GAAP. Accordingly, it should not be
considered as a substitute for net income, income from operations,  or cash flow
provided by operating  activities  prepared in accordance  with GAAP.  Ebitda is
reconciled to cash provided by operating activities as follows:




         ===============================================================================================
         THREE MONTHS ENDED:                                         December 31,     December 31,
                                                                         2004             2003
         -----------------------------------------------------------------------------------------------
                                                                               
         CASH PROVIDED BY OPERATING ACTIVITIES                     $   410,349       $   292,085

         Changes in assets and liabilities                              13,330            (29,647)
         Interest expense                                               43,288             36,465
         Unrealized gains (losses) on oil and gas derivatives          107,510            (23,137)
         Other non-cash items                                          (24,420)           (19,929)
                                                                   ------------      ------- -----

         EBITDA                                                    $   550,057       $     257,837


                                       12




         ===============================================================================================
         TWELVE MONTHS ENDED:                                        December 31,     December 31,
                                                                         2004             2003
         -----------------------------------------------------------------------------------------------
                                                                               
         CASH PROVIDED BY OPERATING ACTIVITIES                     $ 1,448,555       $   945,602

         Adjustments:
           Changes in assets and liabilities                           (29,752)           (41,673)
                                                                   ------- ---       -----------

         OPERATING CASH FLOW*                                      $ 1,418,803       $   903,929
                                                                   ===========       ===========



*Operating cash flow represents net cash provided by operating activities before
changes in assets and  liabilities.  Operating  cash flow is  presented  because
management  believes it is a useful  adjunct to net cash  provided by  operating
activities under accounting  principles  generally accepted in the United States
(GAAP).  Operating cash flow is widely  accepted as a financial  indicator of an
oil and gas company's  ability to generate cash which is used to internally fund
exploration  and  development  activities  and to service debt.  This measure is
widely  used by  investors  and rating  agencies in the  valuation,  comparison,
rating  and  investment  recommendations  of  companies  within  the oil and gas
exploration  and  production  industry.  Operating cash flow is not a measure of
financial  performance under GAAP and should not be considered as an alternative
to cash flows from operating, investing, or financing activities as an indicator
of cash flows, or as a measure of liquidity.




         ===============================================================================================
         TWELVE MONTHS ENDED:                                        December 31,      December 31,
                                                                         2004             2003
         -----------------------------------------------------------------------------------------------
                                                                               
         Net income before cumulative effect of accounting change  $   515,155       $   310,592

         Income tax expense                                            289,771           190,360
         Interest expense                                              167,328           154,356
         Depreciation and amortization of other assets                  29,185            16,793
         Oil and gas depreciation, depletion and amortization          582,137           369,465
                                                                   -----------       -----------

         EBITDA**                                                  $ 1,583,576       $ 1,041,566


**Ebitda  represents  net income (loss) before  cumulative  effect of accounting
change,  income tax  expense  (benefit),  interest  expense,  and  depreciation,
depletion  and  amortization  expense.  Ebitda is  presented  as a  supplemental
financial  measurement  in the  evaluation of our  business.  We believe that it
provides  additional  information  regarding our ability to meet our future debt
service, capital expenditures and working capital requirements.  This measure is
widely  used by  investors  and rating  agencies in the  valuation,  comparison,
rating and investment  recommendations of companies.  Ebitda is also a financial
measurement  that,  with  certain  negotiated  adjustments,  is  reported to our
lenders  pursuant  to our bank  credit  agreement  and is used in the  financial
covenants in our bank credit agreement and our senior note indentures. Ebitda is
not a measure of financial performance under GAAP. Accordingly, it should not be
considered as a substitute for net income, income from operations,  or cash flow
provided by operating  activities  prepared in accordance  with GAAP.  Ebitda is
reconciled to cash provided by operating activities as follows:



         ===============================================================================================
         TWELVE MONTHS ENDED:                                        December 31,      December 31,
                                                                         2004              2003
         -----------------------------------------------------------------------------------------------
                                                                               
         CASH PROVIDED BY OPERATING ACTIVITIES                     $ 1,448,555       $    945,602

         Changes in assets and liabilities                             (29,752)           (41,673)
         Interest expense                                              167,328            154,356
         Unrealized gains (losses) on oil and gas derivatives           40,887             10,531
         Other non-cash items                                          (43,442)           (27,250)
                                                                   -----------       ------------

         EBITDA**                                                  $ 1,583,576       $  1,041,566



                                       13



                                           CHESAPEAKE ENERGY CORPORATION
                               RECONCILIATION OF ADJUSTED EARNINGS & ADJUSTED EBITDA
                                      ($ In 000's, except per share amounts)

         ===============================================================================================
                                                              Three Months Ended    Twelve Months Ended
                                                              December 31, 2004      December 31, 2004
         -----------------------------------------------------------------------------------------------

                                                                               
         Net income available to common shareholders               $   163,153       $   438,971

         Adjustments:
           Preferred stock dividends                                     8,707            39,506
           Loss on conversion/exchange of preferred stock**             36,678            36,678
         Net income                                                $   208,538       $   515,155

         Adjustments, net of tax:
           Unrealized (gains) losses on derivatives                    (69,159)           (22,751)
           Loss on repurchases or exchanges of debt                     11,284             15,716
           Provision for legal settlements                               2,880              2,880

         Adjusted earnings*                                        $   153,543       $    511,000

         Adjusted earnings per share assuming dilution**           $      0.44       $       1.56


         EBITDA                                                    $   550,057       $ 1,583,576

         Adjustments, before tax:
           Unrealized (gains) losses on oil and gas                   (107,510)           (40,887)
             derivatives
         Loss on repurchases or exchanges of debt                       17,632             24,557
         Provision for legal settlements                                 4,500             4,500

         Adjusted EBITDA*                                          $   464.679       $ 1,571,746



*Adjusted  earnings  and  adjusted  earnings  per share  assuming  dilution  and
adjusted  EBITDA,  non-GAAP  financial  measures,  exclude  certain  items  that
management  believes affect the comparability of operating results.  The company
discloses these non-GAAP financial measures as a useful adjunct to GAAP earnings
and EBITDA because:

a.   Management  uses  adjusted  earnings  and  adjusted  EBITDA to evaluate the
     Company's  operational trends and performance relative to other oil and gas
     producing companies.

b.   Adjusted  earnings and adjusted  EBITDA are more comparable to earnings and
     EBITDA  estimates  provided  by  securities   analysts

c.   Items  excluded  generally  are  one-time  items,  or items whose timing or
     amount cannot be reasonably estimated.  Accordingly,  any guidance provided
     by the company  generally  excludes  information  regarding  these types of
     items.

**For  purposes of  calculating  fully  diluted  shares and  earnings  per share
assuming  dilution for the fourth quarter and full-year 2004,  accounting  rules
prohibit the company from assuming the  conversion of the 6.0%  preferred  stock
for common  shares prior to  conversion  or exchange for either period since the
effect  would have been  anti-dilutive.  In  determining  adjusted  earnings per
share,  we have reflected the converted  shares as though they were converted at
the beginning of the period (fully  diluted share count of 347.8 million for the
fourth quarter and 327.1 million for the full-year).

                                       14

                                                  SCHEDULE "A"

                                   CHESAPEAKE'S OUTLOOK AS OF FEBRUARY 22, 2005

Quarter  Ending March 31,  2005;  Year Ending  December  31,  2005;  Year Ending
December 31, 2006.

We have adopted a policy of  periodically  providing  investors with guidance on
certain factors that affect our future financial performance. As of February 22,
2005, we are using the  following key  assumptions  in our  projections  for the
first quarter of 2005, the full-year 2005 and the full-year 2006.

The primary changes from our December 27, 2004 Outlook are in italicized bold in
the table and are explained as follows:

1)   We have  provided our first  production  forecast for the first  quarter of
     2005.
2)   We have  increased  capital  expenditures  by $100  million in 2005 and $50
     million in 2006 to  reflect a planned  increase  in  drilling  activity  on
     various company  properties.
3)   We have updated the projected effects from changes in our hedging positions
     since our December 27, 2004 Outlook.
4)   We have  included our  expectations  for future NYMEX oil and gas prices to
     illustrate  hedging  effects  only.


                                                           Quarter Ending      Year Ending          Year Ending
                                                           March 31, 2005    December 31, 2005    December 31, 2006
                                                           --------------    -----------------    -----------------

Estimated Production:
                                                                                     
  Oil - Mbo                                                   1,650             6,600             6,600
  Gas - Bcf                                                  91 - 92          391 - 399         438 - 448
  Gas Equivalent - Bcfe                                     101 - 102         430 - 438         478 - 488
  Daily gas equivalent midpoint -in Mmcfe                     1,128             1,190             1,325
NYMEX Prices
 (for calculation of realized hedging effects only):
  Oil - $/Bo                                                 $42.28            $40.57           $40.00
  Gas - $/Mcf                                                 $6.17             $6.04            $6.00
Estimated Differentials to NYMEX Prices:
  Oil - $/Bo                                                  -$2.75            -$2.75           -$2.75
  Gas - $/Mcf                                                 -$0.75            -$0.70           -$0.70
Estimated Realized Hedging Effects
 (based on expected NYMEX prices above):
  Oil - $/Bo                                                  -$0.23            $0.04             $0.00
  Gas - $/Mcf                                                  $0.56            $0.07             $0.00
Operating Costs per Mcfe of Projected Production:
  Production expense                                       $0.62 - 0.67      $0.62 - 0.67     $0.68 - 0.72
  Production taxes (generally 7% of O&G revenues)          $0.38 - 0.40      $0.38 - 0.40     $0.38 - 0.40
  General and administrative                               $0.10 - 0.11      $0.10 - 0.11     $0.11 - 0.12
  Stock-based compensation (non-cash)                      $0.02 - 0.04      $0.04 - 0.06     $0.09 - 0.10
  DD&A - oil and gas                                       $1.70 - 1.75      $1.75 - 1.80     $1.80 - 1.90
  Depreciation of other assets                             $0.09 - 0.11      $0.09 - 0.11     $0.10 - 0.12
  Interest expense(a)                                      $0.43 - 0.47      $0.43 - 0.47     $0.43 - 0.47
Other Income and Expense per Mcfe:
  Marketing and other income                               $0.02 - 0.04      $0.02 - 0.04     $0.02 - 0.04

Book Tax Rate                                                 36.5%             36.5%             36.5%

Equivalent Shares Outstanding:
  Basic                                                       314 mm            315 mm           318 mm
  Diluted                                                     352 mm            352 mm           355 mm
Capital Expenditures:
  Drilling, leasehold and seismic                          $350 - $375       $1,400 - $1,500   $1,500 -
                                                                mm                  mm        $1,600 mm

(a) Does not include gains or losses on interest rate derivatives (SFAS 133).

                                       15

Commodity Hedging Activities

    The company utilizes  hedging  strategies to hedge the price of a portion of
its future oil and gas production. These strategies include:

         (i)      For swap instruments,  we receive a fixed price for the hedged
                  commodity and pay a floating  market price, as defined in each
                  instrument,  to the counterparty.  The fixed-price payment and
                  the  floating-price  payment  are netted,  resulting  in a net
                  amount due to or from the counterparty.
         (ii)     For  cap-swaps,  Chesapeake  receives a fixed price and pays a
                  floating market price.  The fixed price received by Chesapeake
                  includes  a  premium  in  exchange  for a "cap"  limiting  the
                  counterparty's  exposure. In other words, there is no limit to
                  Chesapeake's  exposure  but  there is a limit to the  downside
                  exposure of the counterparty.
         (iii)    Basis protection swaps are arrangements that guarantee a price
                  differential  of oil or gas from a specified  delivery  point.
                  Chesapeake  receives a payment  from the  counterparty  if the
                  price  differential  is greater  than the stated  terms of the
                  contract and pays the  counterparty if the price  differential
                  is less than the stated terms of the contract.

    Commodity  markets  are  volatile,  and as a  result,  Chesapeake's  hedging
activity  is dynamic.  As market  conditions  warrant,  the company may elect to
settle a hedging  transaction  prior to its  scheduled  maturity  date and, as a
result, lock in the gain or loss on the transaction.

    Chesapeake enters into oil and natural gas derivative  transactions in order
to  mitigate a portion of its  exposure  to  adverse  market  changes in oil and
natural gas prices.  Accordingly,  associated gains or loses from the derivative
transactions  are reflected as  adjustments  to oil and gas sales.  All realized
gains and losses from oil and natural gas  derivatives  are  included in oil and
gas sales in the month of  related  production.  Pursuant  to SFAS 133,  certain
derivatives do not qualify for  designation as cash flow hedges.  Changes in the
fair  value  of  these  non-qualifying  derivatives  that  occur  prior to their
maturity  (i.e.  because  of  temporary  fluctuations  in  value)  are  reported
currently  in the  consolidated  statement of  operations  as  unrealized  gains
(losses) within oil and gas sales.

    Following  provisions  of SFAS 133,  changes in the fair value of derivative
instruments  designated  as  cash  flow  hedges,  to  the  extent  effective  in
offsetting  cash  flows  attributable  to hedged  risk,  are  recorded  in other
comprehensive income until the hedged item is recognized in earnings. Any change
in fair value resulting from  ineffectiveness is recognized currently in oil and
natural gas sales.

The company currently has in place the following natural gas swaps:




                                                                        % Hedged
                                                                 -------------------------
                               Avg.                  Avg. NYMEX                  Open Swap
                              NYMEX                   Price                    Positions as
                              Strike                 Including     Assuming      a % of
                    Open      Price     Gain (Loss)  Open and        Gas        Estimated
                    Swaps     of Open   from Locked    Locked      Production    Total Gas
                   in Bcf's   Swaps       Swaps       Positions   in Bcf's of:   Production
                  --------   -------   ----------   ----------   -------------  ----------

2005:
                                                                   
1st Qtr             62.2      $7.00       -$0.18       $6.82          91.5           68%
2nd Qtr             52.2      $6.17       -$0.19       $5.98          97.0           54%
3rd Qtr             46.4      $6.19       -$0.23       $5.96         101.5           46%
4th Qtr             27.5      $6.26       -$0.39       $5.87         105.0           26%
=============================================================================================
Total 2005(1)      188.3      $6.46       -$0.22       $6.24         395.0           48%
=============================================================================================

=============================================================================================
Total 2006(1)       39.3      $6.77       -$0.62       $6.15         443.0            9%
=============================================================================================

=============================================================================================
Total 2007(2)         -         -            -            -          470.0             -
=============================================================================================

=============================================================================================
TOTALS
- ---------------------------------------------------------------------------------------------
2005-2007          227.6      $6.51       -$0.29       $6.22       1,308.0            17%
=============================================================================================


(1)  Certain  hedging  arrangements  include swaps with knockout  prices ranging
     from $3.75 to $5.50  covering 70.0 bcf in 2005 and $3.75 to $5.50  covering
     28.4 bcf in 2006.

(2)  Swaps covering 25.6 bcf have been locked for 2007.  This will result in the
     recognition   of  $11.6   million  of  losses  in  2007  when  the  hedging
     arrangements settle.

Note:  Not shown above are collars  covering 4.4 bcf of  production in 2005 at a
weighted average floor and ceiling of $3.10 and $4.44. and call options covering
7.3 bcf of production in 2005 at a weighted average price of $6.00.


                                       16


The company has also entered  into the  following  natural gas basis  protection
swaps:


                                                                 Assuming Gas
                        Volume in Bcf's       NYMEX less:     Production in Bcf's    %Hedged
                       ----------------     ----------------   -------------------    -------
                                                                            
2005                         188.6               0.26                 392.0             48%
2006                         130.1               0.32                 440.0             30%
2007                         126.5               0.28                 470.0             27%
2008                         118.6               0.27                 495.0             24%
2009                          86.6               0.29                 520.0             17%
Totals                       650.4             $ 0.28               2,317.0             28%


* weighted average

The company has entered into the following crude oil hedging arrangements:



                                                                             % Hedged
                                                ----------------------------------------------------------------

                   Open Swaps     Avg. NYMEX            Assuming Oil                Open Swap Positions as %
                    in mbo's     Strike Price     Production in mbo's of:         of Total Estimated Production
                    --------     ------------     -----------------------         -----------------------------

                                                                                   
Q1 - 2005              870.5        $41.87                 1,650                               53%
Q2 - 2005            1,001.0        $42.39                 1,650                               61%
Q3 - 2005              246.0        $38.00                 1,650                               15%
Q4 - 2005              153.5        $32.15                 1,650                                9%
- ----------------------------------------------------------------------------------------------------------------
Total 2005(1)        2,271.0        $41.02                 6,600                               34%
                 ===============================================================================================



(1)  Certain  hedging  arrangements  include swaps with knockout  prices ranging
     from $26.00 to $34.00 covering 1,996 mbo in 2005.

                                       17

                                  SCHEDULE "B"

              CHESAPEAKE'S PREVIOUS OUTLOOK AS OF DECEMBER 27, 2004
                          (PROVIDED FOR REFERENCE ONLY)

                NOW SUPERSEDED BY OUTLOOK AS OF FEBRUARY 22, 2005

Quarter Ending  December 31, 2004;  Year Ending  December 31, 2004;  Year Ending
December 31, 2005; Year Ending December 31, 2006.

We have adopted a policy of  periodically  providing  investors with guidance on
certain factors that affect our future financial performance. As of December 27,
2004, we are using the  following key  assumptions  in our  projections  for the
fourth quarter of 2004, the full-year 2004, the full-year 2005 and the full-year
2006.

We expect  to record  non-operating  losses  in Q4 2004 in  connection  with our
pending cash tender offer for our $209.8 million of 8.375% senior notes due 2008
and our pending offer to exchange our 6.0%  convertible  preferred stock for our
common  stock.  If we purchase all of our 8.375%  senior  notes  pursuant to the
tender offer, we estimate that an after-tax loss on the early  redemption of the
notes  of $12  million  will be  recorded  in Q4 2004  as an  adjustment  to net
earnings.  If all our 6.0%  preferred  stock is exchanged for common  stock,  we
estimate  that a  loss  on the  early  conversion  of  the  preferred  stock  of
approximately  $37 million  will be  reflected  as an  adjustment  to net income
available to common  shareholders for the purpose of calculating  basic earnings
per share in Q4 2004.

The primary changes from our November 30, 2004 Outlook are in italicized bold in
the table and are explained as follows:

1)   We have  updated our  previous  production  forecasts  for 2005 and 2006 to
     reflect  increases  in  production  of 35 mmcfe per day in 2005  (excluding
     January)  and 55  mmcfe  per  day in  2006  as a  result  of the  announced
     acquisition of BRG Petroleum Corporation. This increases our full-year 2005
     production  forecast by 2.8% to a mid-point  of 1,190 mmcfe per day and our
     2006 production forecast by 4.3% to a mid-point of 1,325 mmcfe per day.
2)   We have  increased  capital  expenditures  by $50  million in 2005 and $100
     million in 2006 to reflect planned  increased  drilling activity planned on
     the BRG and other company properties.
3)   We have updated the projected effects from changes in our hedging positions
     since our November 30, 2004 Outlook.
4)   We have  included our  expectations  for future NYMEX oil and gas prices to
     illustrate hedging effects only.


                                                          Quarter Ending     Year Ending       Year Ending      Year Ending
                                                          December 31,      December 31,      December 31,     December 31,
                                                          ------------      ------------      ------------     ------------
                                                               2004              2004             2005              2006
                                                               ----              ----             ----              ----
Estimated Production:
                                                                                                    
  Oil - Mbo                                                   1,588             6,560             6,600            6,600
  Gas - Bcf                                                88.5 - 89.5        317 - 319         391 - 399        438 - 448
  Gas Equivalent - Bcfe                                      98 - 99          356 - 358         430 - 438        478 - 488
  Daily gas equivalent midpoint -in Mmcfe                     1,069              975              1,190            1,325
NYMEX Prices
 (for calculation of realized hedging effects only):
  Oil - $/Bo                                                  $46.67            $41.00           $40.00            $40.00
  Gas - $/Mcf                                                 $6.60             $6.01             $6.00             $6.00
Estimated Differentials to NYMEX Prices:
  Oil - $/Bo                                                  -$2.75            -$2.65           -$2.75            -$2.75
  Gas - $/Mcf                                                 -$0.75            -$0.70           -$0.70            -$0.70
Estimated Realized Hedging Effects
 (based on expected NYMEX prices above):
  Oil - $/Bo                                                 -$15.85           -$10.19            $0.06            $0.00
  Gas - $/Mcf                                                 -$0.53            -$0.23            $0.05           -$0.01
Operating Costs per Mcfe of Projected Production:
  Production expense                                       $0.57 - 0.62      $0.57 - 0.62     $0.62 - 0.67      $0.68 - 0.72
  Production taxes (generally 7% of O&G revenues)          $0.40 - 0.44      $0.28 - 0.33     $0.38 - 0.40      $0.38 - 0.40
  General and administrative                               $0.10 - 0.11      $0.10 - 0.11     $0.10 - 0.11      $0.11 - 0.12
  Stock based compensation (non-cash)                      $0.02 - 0.04      $0.02 - 0.04     $0.04 - 0.06      $0.09 - 0.10
  DD&A - oil and gas                                       $1.65 - 1.70      $1.60 - 1.65     $1.75 - 1.80      $1.80 - 1.90
  Depreciation of other assets                             $0.08 - 0.10      $0.08 - 0.10     $0.09 - 0.11      $0.10 - 0.12
  Interest expense(a)                                      $0.45 - 0.49      $0.45 - 0.49     $0.43 - 0.47      $0.43 - 0.47
Other Income and Expense per Mcfe:
  Marketing and other income                               $0.02 - 0.04      $0.02 - 0.04     $0.02 - 0.04      $0.02 - 0.04

Book Tax Rate                                                  36%               36%               36%              36%

Equivalent Shares Outstanding:
  Basic                                                       279 mm            254 mm           313 mm            316 mm
  Diluted                                                     347 mm            327 mm           351 mm            354 mm
Capital Expenditures:
  Drilling, leasehold and seismic                          $300 - $325       $1,100 - $1,150   $1,300 -         $1,450 - $1,550
                                                                 mm                 mm        $1,400 mm               mm


(b)  Does not include gains or losses on interest rate derivatives (SFAS 133).

                                       18

Commodity Hedging Activities

    The company utilizes  hedging  strategies to hedge the price of a portion of
its future oil and gas production. These strategies include:

         (i)      For swap instruments,  we receive a fixed price for the hedged
                  commodity and pay a floating  market price, as defined in each
                  instrument,  to the counterparty.  The fixed-price payment and
                  the  floating-price  payment  are netted,  resulting  in a net
                  amount due to or from the counterparty.
         (ii)     For  cap-swaps,  Chesapeake  receives a fixed price and pays a
                  floating market price.  The fixed price received by Chesapeake
                  includes  a  premium  in  exchange  for a "cap"  limiting  the
                  counterparty's  exposure. In other words, there is no limit to
                  Chesapeake's  exposure  but  there is a limit to the  downside
                  exposure of the counterparty.
         (iii)    Basis protection swaps are arrangements that guarantee a price
                  differential  of oil or gas from a specified  delivery  point.
                  Chesapeake  receives a payment  from the  counterparty  if the
                  price  differential  is greater  than the stated  terms of the
                  contract and pays the  counterparty if the price  differential
                  is less than the stated terms of the contract.

    Commodity  markets  are  volatile,  and as a  result,  Chesapeake's  hedging
activity  is dynamic.  As market  conditions  warrant,  the company may elect to
settle a hedging  transaction  prior to its  scheduled  maturity  date and, as a
result, lock in the gain or loss on the transaction.

    Chesapeake enters into oil and natural gas derivative  transactions in order
to  mitigate a portion of its  exposure  to  adverse  market  changes in oil and
natural gas prices.  Accordingly,  associated gains or loses from the derivative
transactions  are reflected as  adjustments  to oil and gas sales.  All realized
gains and losses from oil and natural gas  derivatives  are  included in oil and
gas sales in the month of  related  production.  Pursuant  to SFAS 133,  certain
derivatives do not qualify for  designation as cash flow hedges.  Changes in the
fair  value  of  these  non-qualifying  derivatives  that  occur  prior to their
maturity  (i.e.  because  of  temporary  fluctuations  in  value)  are  reported
currently  in the  consolidated  statement of  operations  as  unrealized  gains
(losses) within oil and gas sales.

    Following  provisions  of SFAS 133,  changes in the fair value of derivative
instruments  designated  as  cash  flow  hedges,  to  the  extent  effective  in
offsetting  cash  flows  attributable  to hedged  risk,  are  recorded  in other
comprehensive income until the hedged item is recognized in earnings. Any change
in fair value resulting from  ineffectiveness is recognized currently in oil and
natural gas sales.

The company currently has in place the following natural gas swaps:




                                                                      % Hedged
                                                                 -------------------------
                               Avg.                  Avg. NYMEX                  Open Swap
                              NYMEX                   Price                    Positions as
                              Strike                 Including     Assuming      a % of
                    Open      Price     Gain (Loss)  Open and        Gas        Estimated
                    Swaps     of Open   from Locked    Locked      Production    Total Gas
                   in Bcf's   Swaps       Swaps       Positions   in Bcf's of:   Production
                  --------   -------   ----------   ----------   -------------  ----------

2004:
                                                                   
1st Qtr              69.5     $5.94       $0.03        $5.97          70.1           99%
2nd Qtr              62.2     $5.15       $0.00        $5.15          76.5           81%
3rd Qtr(1)           70.7     $5.49      -$0.09        $5.40          83.2           85%
4th Qtr(1)           76.5     $5.88      -$0.11        $5.77          89.0           86%
- ---------------------------------------------------------------------------------------------
Total 2004          278.9     $5.63      -$0.05        $5.58         318.8           88%
=============================================================================================

=============================================================================================
2005:
1st Qtr              62.4     $6.91      -$0.11        $6.80          93.4           67%
2nd Qtr              38.5     $6.05      -$0.27        $5.78          97.5           39%
3rd Qtr              34.5     $6.06      -$0.31        $5.75         100.8           34%
4th Qtr              23.5     $6.20      -$0.46        $5.74         103.0           23%
=============================================================================================
Total 2005(1)       158.9     $6.41      -$0.24        $6.17         394.7           40%
=============================================================================================

=============================================================================================
Total 2006(1)        39.3     $6.77      -$0.62        $6.15         443.0            9%
=============================================================================================

=============================================================================================
Total 2007(2)         -         -           -             -          470.0             -
=============================================================================================
TOTALS
- ---------------------------------------------------------------------------------------------
2005-2007           198.2     $6.48      -$0.31        $6.17        1,307.7           15%
=============================================================================================


(3)  Certain  hedging  arrangements  include swaps with knockout  prices ranging
     from $3.50 to $5.25 covering 25.4 bcf in 2004, $3.75 to $5.50 covering 60.2
     bcf in 2005 and $3.75 to $5.50 covering 28.4 bcf in 2006.

(4)  Swaps covering 25.6 bcf have been locked for 2007.  This will result in the
     recognition   of  $11.6   million  of  losses  in  2007  when  the  hedging
     arrangements settle.

Note: Not shown above are collars  covering 1.1 bcf and 4.4 bcf of production in
Q4 2004 and in 2005,  respectively,  at a weighted  average floor and ceiling of
$3.10 and $4.44.  In  addition,  call options  covering  10.2 bcf and 7.3 bcf of
production in Q4 2004 and in 2005 at a weighted average price of $6.31 and $6.00
are not included in the table above.

                                       19

The company has also entered  into the  following  natural gas basis  protection
swaps:




                                                                 Assuming Gas
                        Volume in Bcf's       NYMEX less:     Production in Bcf's    %Hedged
                       ----------------     ----------------   -------------------    -------
                                                                            
2004                        157.4                 0.17              318.8               49%
2005                        188.6                 0.26              394.7               48%
2006                        130.1                 0.32              443.0               29%
2007                        126.5                 0.28              470.0               27%
2008                        118.6                 0.27              495.0               24%
2009                         86.6                 0.29              520.0               17%
Totals                      807.8             $   0.26            2,641.5               31%



* weighted average

The company has entered into the following crude oil hedging arrangements:



                                                                            % Hedged
                                                ----------------------------------------------------------------

                   Open Swaps     Avg. NYMEX            Assuming Oil                Open Swap Positions as %
                    in mbo's     Strike Price     Production in mbo's of:         of Total Estimated Production
                    --------     ------------     -----------------------         ----------------------------
                                                                                   
Q1 - 2004            1,270           $28.58                 1,465                              87%
Q2 - 2004            1,540           $30.00                 1,673                              92%
Q3 - 2004(1)         1,519           $30.32                 1,834                              83%
Q4 - 2004(1)         1,518           $30.10                 1,588                              96%
- ----------------------------------------------------------------------------------------------------------------
Total 2004(1)        5,847           $29.80                 6,560                              89%
                 ===============================================================================================
Q1 - 2005              855           $41.76                 1,650                              52%
Q2 - 2005              865           $41.63                 1,650                              52%
Q3 - 2005              138           $31.16                 1,650                               8%
Q4 - 2005              138           $30.62                 1,650                               8%
- ----------------------------------------------------------------------------------------------------------------

Total 2005(1)        1,996           $40.20                 6,600                              30%
                 ===============================================================================================


(1)  Certain  hedging  arrangements  include swaps with knockout  prices ranging
     from  $21.00  to $26.00  covering  2,240  mbo in 2004 and  knockout  prices
     ranging from $26.00 to $34.00 covering 1,996 mbo in 2005.

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