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


               CHESAPEAKE ENERGY CORPORATION ANNOUNCES ACQUISITION
                   OF BARNETT SHALE NATURAL GAS PROPERTY FROM
                  HALLWOOD ENERGY CORPORATION FOR $277 MILLION

     COMPANY TO ACQUIRE 18,000 ACRE NORTH BLOCK PROPERTY IN JOHNSON COUNTY,
          TEXAS, LOCATED JUST NORTH OF CHESAPEAKE'S EXISTING 44%-OWNED
               30,000 ACRE SOUTH BLOCK JOINT VENTURE WITH HALLWOOD

        TRANSACTION INCLUDES PRODUCTION OF 25 MMCFE PER DAY AND 280 BCFE
       OF INTERNALLY ESTIMATED RESERVES, CONSISTING OF 135 BCFE OF PROVED
             RESERVES AND 145 BCFE OF PROBABLE AND POSSIBLE RESERVES

    ACQUISITION BOOSTS CHESAPEAKE'S PRODUCTION FORECAST BY 3.6% FOR 2005 AND
      5.8% FOR 2006 AS ESTIMATED PRODUCTION ON ACQUIRED PROPERTY INCREASES
            TO 40 MMCFE PER DAY IN 2005 AND 70 MMCFE PER DAY IN 2006


OKLAHOMA CITY, OKLAHOMA,  NOVEMBER 30, 2004 - Chesapeake today announced that it
has entered  into an  agreement  with  Hallwood  Energy  Corporation  to acquire
Hallwood's  18,000 acre North Block property in Johnson  County,  Texas for $277
million in cash. This property is located immediately north of Hallwood's 30,000
acre South Block property,  in which Chesapeake  acquired a 44% working interest
through its June 2002 acquisition of Canaan Energy Corporation.

In this transaction,  Chesapeake  anticipates  acquiring an internally estimated
135 billion cubic feet of natural gas equivalent  proved  reserves  (bcfe),  145
bcfe of probable and possible  reserves and net production of  approximately  25
million cubic feet of natural gas equivalent  production (mmcfe) per day from 31
vertical wells and 11 horizontal wells. Chesapeake has identified  approximately
70 proved undeveloped and 90 probable and possible horizontal drilling locations
on the 18,000  acre North  Block that it  believes  can be drilled at an average
cost of  approximately  $2.2  million  per well to  develop  estimated  ultimate
reserves  (EUR)  of  2.5  bcfe  per  well.  Pro  forma  for  this   acquisition,
Chesapeake's  proved oil and natural gas reserves will increase to an internally
estimated  4.6  trillion  cubic  feet of  natural  gas  equivalent  (tcfe) as of
September 30, 2004.

After  allocating $98 million of the $277 million  purchase price to undeveloped
leasehold,  Chesapeake's  acquisition  cost  for  the  135  bcfe  of  internally
estimated  proved  reserves will be $1.33 per thousand cubic feet of natural gas
equivalent  (mcfe).  Including $303 million of anticipated future drilling costs
to fully develop the proved,  probable and possible (3P)  reserves,  the company
estimates that its all-in  acquisition cost for the 280 bcfe of 3P reserves will
be $2.07 per mcfe.  In addition,  Chesapeake  has agreed to purchase  Hallwood's
North  Block gas  gathering,  compression  and  water  disposal  assets  for $15
million.

The North Block  proved  reserves  have a  reserves-to-production  index of 14.8
years,  are 100% gas, are 15% proved  developed,  have current  lease  operating
expenses of $0.22 per mcfe, have severance taxes of 1.3% of the wellhead revenue
value  and will be 100%  Chesapeake-operated.  The  property's  very  low  lease
operating expenses (approximately $0.53 per mcfe below the industry average) and
unusually low severance taxes (approximately $0.37 below the standard 7.5% Texas
severance  tax  rate at  $6.00  per mcf  because  of  severance  tax  reductions
applicable  to  certain  types  of  newly  drilled  wells in  Texas)  create  an
approximate $0.90 per mcfe economic advantage over typical Mid-Continent natural
gas properties.

Through the use of a three-rig  drilling  program,  the company  believes it can
increase  gas  production  on the  acquired  property  from 25 mmcfe  per day in
December  2004 to at least 55 mmcfe per day by December  2005 and to at least 85
mmcfe per day by December  2006.  If these  production  increases  are achieved,
Chesapeake  estimates  that its average  daily  production in 2005 and 2006 will
increase  by 40 and 70 mmcfe per day,  respectively  (see  Chesapeake's  updated
Outlook as of November 30, 2004 attached as Exhibit "A"). The company has hedged
the current 25 mmcfe per day of acquired production at NYMEX gas prices of $7.15
per mmbtu and $6.63 per mmbtu for 2005 and 2006,  respectively,  well  above the
gas prices used to evaluate the property.

The  acquisition  is expected  to close on  December  15, 2004 and is subject to
customary  closing  conditions.  The company  intends to finance the acquisition
using a portion of the proceeds from a new $600 million  private issue of senior
notes.

Hallwood  is a  private  company  and was  advised  in the  sale by  Albrecht  &
Associates, Inc. of Houston, Texas.




                               MANAGEMENT COMMENT

Aubrey K. McClendon,  Chesapeake's Chief Executive Officer,  commented,  "We are
pleased to announce today's  acquisition of the Hallwood North Block acreage for
several reasons. First, we are building our Barnett Shale ownership and creating
economies  of  scale  by  leveraging  off  our   acquisition  of  Canaan  Energy
Corporation  in June 2002.  In that $120  million  transaction  we  inherited an
initial Barnett Shale leasehold  position in Johnson County,  Texas, to which we
initially gave no value.  Today it appears that Chesapeake's South Block Barnett
Shale  position  may be  worth  more  than  what we paid for the  entire  Canaan
transaction.

Second,   Chesapeake  is  well  positioned  to  continue  Hallwood's  successful
production ramp-up currently  underway,  having worked closely with Hallwood for
two years in the South  Block  and  because  of our  extensive  experience  with
horizontal drilling (more than 285 horizontal wells drilled in Texas since 1990)
and  3-D  seismic  (more  than  9.0  million  acres  owned).  Hallwood's  use of
horizontal   drilling,   innovative   completion   techniques  and  3-D  seismic
information during the past few years has been very effective on both the 18,000
North Block property and the 30,000 acre South Block property.

Finally,  we believe we have been  conservative in our reserve estimates for the
acquired  property,  both  with  regard to our  estimated  EUR's of 2.5 bcfe per
horizontal well and to our planned PUD drilling  pattern of 140 acres and 2,000'
standoffs for horizontal  wellbores.  Over time, we are hopeful that our reserve
estimates  can  increase  and that our well  spacing  can  decrease,  leading to
significantly  higher recoverable proved reserves than currently  projected.  We
look forward to adding further value to this prolific  gas-producing area of the
Mid-Continent region in the years to come."


                           CONFERENCE CALL INFORMATION

A conference call has been scheduled for Wednesday morning,  December 1, 2004 at
9:00 a.m.  EST to  discuss  this  release.  The  telephone  number to access the
conference  call  is  913.981.5592.  For  those  unable  to  participate  in the
conference  call, a replay will be available  from 12:00 p.m.  EST,  December 1,
2004  through  midnight  EST on  December  14,  2004.  The  number to access the
conference  call  replay  is  719.457.0820  and  the  passcode  is  915998.  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.


                                       2


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 PROSPECTUS DATED SEPTEMBER 10,
2004 FILED WITH THE  SECURITIES  AND EXCHANGE  COMMISSION ON SEPTEMBER 10, 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. ALSO, OUR INTERNAL ESTIMATES OF RESERVES, PARTICULARLY
THOSE IN THE PROPERTY  PROPOSED TO BE ACQUIRED  WHERE WE MAY HAVE LIMITED REVIEW
OF DATA OR EXPERIENCE  WITH THE RESERVES,  MAY BE SUBJECT TO REVISION AND MAY BE
DIFFERENT  FROM  ESTIMATES  BY OUR  EXTERNAL  RESERVOIR  ENGINEERS  AT YEAR-END.
ALTHOUGH WE BELIEVE THE EXPECTATIONS, ESTIMATES 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 AND DATA 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.

THE  ANNOUNCEMENT  OF A PROPOSED DEBT  FINANCING IN THIS PRESS RELEASE SHALL NOT
CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY SECURITIES.
THE DEBT  SECURITIES  WILL LIKELY NOT BE REGISTERED  UNDER THE SECURITIES ACT OF
1933 OR ANY STATE  SECURITIES LAWS, AND MAY NOT BE OFFERED OR SOLD IN THE UNITED
STATES ABSENT  REGISTRATION  OR AN APPLICABLE  EXEMPTION  FROM THE  REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND STATE LAWS.

CHESAPEAKE  ENERGY  CORPORATION  IS THE SIXTH  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.


                                       3


                                  SCHEDULE "A"

                  CHESAPEAKE'S OUTLOOK AS OF NOVEMBER 30, 2004

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 November 30,
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.

The primary  changes from our November 1, 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 40 mmcfe per day in 2005 and 70 mmcfe
     per day in 2006 as a result of the announced acquisition of Hallwood Energy
     Corporation.  This increases our full-year 2005 production forecast by 3.6%
     to a mid-point of 1,155 mmcfe per day and our 2006  production  forecast by
     5.8% to a mid-point of 1,270 mmcfe per day.

2)   We have increased  capital  expenditures by $50 million in each of 2005 and
     2006 to reflect  increased  drilling activity planned on the Hallwood North
     Block property.

3)   We have updated the projected effects from changes in our hedging positions
     since our November 1, 2004 Outlook.

4)   We have  included our  expectations  for future NYMEX oil and gas prices to
     illustrate hedging effects only.

5)   We have adjusted equivalent shares outstanding to reflect i) the conversion
     of our 6.75% preferred stock into common shares on November 22, 2004, ii) a
     recent private  exchange of 600,000 shares of our 6.0% preferred  stock for
     3.225 million of our common  shares,  and iii) our pending  tender offer to
     exchange our remaining 6.0%  preferred  stock for an estimated 21.2 million
     common shares.

                                       4





                                                             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         379 - 387         418 - 428
  Gas Equivalent - Bcfe                                          98 - 99         356 - 358         418 - 426         458 - 468
                                                                  1,069             975              1,155             1,270
  DAILY GAS EQUIVALENT MIDPOINT - IN  MMCFE

NYMEX PRICES (FOR CALCULATION OF REALIZED
 HEDGING EFFECTS ONLY):
  Oil - $/Bo                                                      $46.67           $41.00            $40.00           $36.00
  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):
                                                                    -$15.85          -$10.19             $0.06             $0.00
  OIL - $/BO
                                                                     -$0.53           -$0.23             $0.05            -$0.01
  GAS - $/MCF

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      $1.65 - 1.75     $1.75 - 1.85
  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 -          $1,250 -         $1,350 -
                                                                  mm              $1,150 mm         $1,350 mm        $1,450 mm


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


                                       5


        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.


                                       6


        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              60.6     $6.89      -$0.11        $6.78          91.5           66%
2nd Qtr              34.9     $5.97      -$0.30        $5.67          94.5           37%
3rd Qtr              30.8     $5.96      -$0.35        $5.61          97.5           32%
4th Qtr              21.6     $6.10      -$0.50        $5.60          99.5           22%

Total 2005(1)       147.9     $6.36      -$0.26        $6.10         383.0           39%
===========================================================================================

===========================================================================================
Total 2006(1)(2)     32.0     $6.62      -$0.76        $5.86         423.0            8%
===========================================================================================

===========================================================================================
Total 2007(2)           -         -           -            -        450.0              -
===========================================================================================

- -------------------------------------------------------------------------------------------
TOTALS
- -------------------------------------------------------------------------------------------
2005-2007           179.9     $6.41      -$0.35        $6.06       1,256.0           14%
- -------------------------------------------------------------------------------------------



     (1)  Certain  hedging  arrangements  include  swaps  with  knockout  prices
          ranging from $3.50 to $5.25 covering 25.4 bcf in 2004,  $3.75 to $5.00
          covering  52.9 bcf in 2005 and  $3.75  to $5.25  covering  21.1 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.

     (3)  Not shown above are collard 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.


                                       7



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



                                                                             Assuming Gas
                                                                          Production in Bcf's
                             Volume in Bcf'S           NYMEX less:                OF                 % Hedged
                             ---------------        ----------------      -------------------       ------------
                                                                                             
2004                              157.4                    0.17                   318.8                  49%
2005                              186.1                    0.26                   383.0                  49%
2006                              124.1                    0.31                   423.0                  29%
2007                              118.7                    0.27                   450.0                  26%
2008                              108.0                    0.25                   475.0                  23%
2009                               80.3                    0.28                   500.0                  16%
                            -----------------       ----------------       ------------------         ------
Totals                            774.6             $      0.25                 2,549.8                  30%
                            =================       ================       ==================         ======


* 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 Priee     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 Heding arrangements include swaps with knockout prices randing from
     $21.00 TO $26.00  covering  2,240 mno in 2004 and knockout  proces  ranging
     from $26.00 TO $34.00 covering 1,996 mbo in 2005.

                                       8


                                  SCHEDULE "B"

              CHESAPEAKE'S PREVIOUS OUTLOOK AS OF NOVEMBER 1, 2004
                          (PROVIDED FOR REFERENCE ONLY)

                NOW SUPERSEDED BY OUTLOOK AS OF NOVEMBER 30, 2004


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 November 1,
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.

The primary changes from our July 26, 2004 Outlook are in italicized bold in the
table and are explained as follows:

1)       We have  deleted our 2004 third  quarter  forecast and have updated our
         forecasts for the 2004 fourth quarter, the full-year 2004 and full-year
         2005 forecasts and have provided our initial 2006 forecast.

2)       We have updated our previous production forecast for the full-year 2004
         to reflect  actual third quarter 2004  production,  which  exceeded the
         mid-point of our guidance by 24 mmcfe per day, or 2.4%. In addition, we
         have revised upward our fourth quarter 2004  production  forecast by 20
         mmcfe per day, or 2.0%,  from the  mid-point of our previous  guidance,
         ii) our full-year 2004 production forecast by 8 mmcfe per day, or 0.8%,
         from the mid-point of our previous  guidance,  iii) our full-year  2005
         forecast  by 33 mmcfe  per  day,  or 3.0%,  from the  mid-point  of our
         previous  guidance,  all to  account  for  better  than  expected  2004
         drilling results. The mid-point of our initial 2006 production forecast
         is 438 bcfe, or 1,200 mmcfe per day, a projected  increase of 7.6% over
         the midpoint of our revised 2005 forecast and 23.1% above the mid-point
         of our revised 2004 production forecast.

3)       We have  updated the  projected  effects  from  changes in our hedging
         positions  since our July 26, 2004 Outlook.

4)       We have included our expectations for future NYMEX oil and gas prices
         to  illustrate  hedging  effects only.

5)       For ease of  reconciliation,  please note that our first  quarter  2004
         production was 78.9 bcfe,  our second quarter 2004  production was 86.5
         bcfe,  our third  quarter  production  was 94.2 bcfe and our first nine
         months  2004  production  was 259.7  bcfe.  Our July 26,  2004  Outlook
         forecasted a third quarter 2004  production  range of 91.5 to 92.5 bcfe
         and a  full-year  2004  production  range  of  353  to  355  bcfe.  The
         differences  are  attributable  to better than  expected  2004 drilling
         results.

                                       9





                                                             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         364 - 372         393 - 403
  Gas Equivalent - Bcfe                                          98 - 99         356 - 358         403 - 411         433 - 443
                                                                  1,069             975              1,115             1,200
  DAILY GAS EQUIVALENT MIDPOINT - IN  MMCFE

NYMEX PRICES (FOR CALCULATION OF REALIZED
 HEDGING EFFECTS ONLY):
  Oil - $/Bo                                                         $46.67            $41.00            $40.00            $36.00
  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):
                                                                    -$15.85          -$10.19             $0.06             $0.00
  OIL - $/BO
                                                                     -$0.53           -$0.23             $0.00            -$0.04
  GAS - $/MCF

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      $1.65 - 1.75     $1.75 - 1.85
  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

                                                                   36%              36%               36%               36%
Book Tax Rate

Equivalent Shares Outstanding:
  Basic                                                          279 mm            254 mm            288 mm           290 mm
  Diluted                                                        347 mm            317 mm            349 mm           352 mm


Capital Expenditures:
  Drilling, leasehold and seismic                             $300 - $325         $1,100 -          $1,200 -          $1,300 -
                                                                   mm           $1,150 mm         $1,300 mm          $1,400 mm


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


                                         10


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.


                                       11



     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              56.1     $6.82      -$0.17        $6.65           92.0          61%
2nd Qtr              30.4     $5.86      -$0.35        $5.51           92.0          33%
3rd Qtr              26.2     $5.77      -$0.41        $5.36           92.0          28%
4th Qtr              17.0     $5.85      -$0.63        $5.22           92.0          18%
====================================================================================================================
Total 2005(1)       129.7     $6.26      -$0.30        $5.96          368.0          35%
====================================================================================================================

====================================================================================================================
Total 2006(1)(2)     13.8     $6.64      -$1.77        $4.87          398.0           3%
====================================================================================================================

====================================================================================================================
Total 2007(2)           -         -           -            -          430.0            -
- --------------------------------------------------------------------------------------------------------------------

====================================================================================================================
TOTALS
- --------------------------------------------------------------------------------------------------------------------
2005-2007                143.5          $6.30                -$0.44         $5.86           1,196.0               12%
====================================================================================================================



(1)  Certain hedging  arrangmentsS  include swaps with knockout  prcesS ranging
     from $3.50 to $5.25 covering 25.4 bcf in 2004, $3.75 TO $5.00 covering 52.9
     bcf in 2005 and $3.75 TO $5.25 covering 21.1 bcf in 2006.

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


(3)  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.


                                       12


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




                                                                             Assuming Gas
                                                                          Production in Bcf's
                             Volume in Bcf'S           NYMEX less:                OF                 % Hedged
                             ---------------        ----------------      -------------------       ------------
                                                                                            

2004                              157.4                    0.17                   318.8                  49%
2005                              175.2                    0.25                   368.0                  48%
2006                              113.1                    0.30                   398.0                  28%
2007                              107.7                    0.26                   430.0                  25%
2008                              108.0                    0.25                   460.0                  23%
2009                               80.3                    0.28                   490.0                  16%
                            -----------------       ----------------       ------------------         ------
Totals                            741.7             $      0.26                 2,464.8                  30%
                            =================       ================       ==================         ======


* 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 Priee     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%
                 ------------------------------------------------------------------------------------------------


                     5,847           $29.80                 6,560                              89%
Total 2004(1)
                 ================================================================================================


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 mco in 2005.

                                       13