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


            CHESAPEAKE ENERGY CORPORATION ANNOUNCES FINAL RESULTS OF
           6.0% CUMULATIVE CONVERTIBLE PREFERRED STOCK EXCHANGE OFFER

OKLAHOMA  CITY,  OKLAHOMA,  DECEMBER  29, 2004 - Chesapeake  Energy  Corporation
(NYSE:CHK)  today announced the final results of its previously  announced offer
to exchange 5.3260 shares of its common stock for each outstanding  share of its
6.0%  Cumulative   Convertible  Preferred  Stock  (CUSIP  Nos.  165167-70-1  and
165167-60-2),  commenced  on November 30, 2004.  The exchange  offer  expired at
12:00 midnight EST on Tuesday, December 28, 2004.

Chesapeake  issued  20,754,817  shares  of its  common  stock  in  exchange  for
3,896,890  shares,  or  97%,  of its  outstanding  6.0%  Cumulative  Convertible
Preferred Stock tendered in the exchange offer.  103,110 shares of the Preferred
Stock  remained  outstanding  at the  expiration  of  the  exchange  offer.  The
Preferred  Stock is  listed on the New York  Stock  Exchange  under  the  symbol
"CHKPrA", and Chesapeake's common stock is listed on the New York Stock Exchange
under the symbol "CHK".

The  exchange  offer was made  pursuant to an exchange  offer  prospectus  dated
November 30, 2004 (as amended on December 16, 2004)  contained in a registration
statement  filed by  Chesapeake  with the  Securities  and Exchange  Commission.
Copies of the prospectus contained in the registration statement may be obtained
from the Information Agent for the exchange offer, MacKenzie Partners, Inc., who
may be reached at 800-322-2885  (US toll-free) and 212-929-5500  (collect).  The
exchange offer prospectus and other related  documents filed with the Securities
and  Exchange  Commission  may also be  obtained at the  Commission's  web site,
http://www.sec.gov.

The Company  engaged UBS  Securities  LLC to act as dealer manager in connection
with the Offer.  Questions regarding the Offer may be directed to UBS Securities
LLC, 677  Washington  Blvd.,  Stamford,  CT 06901 at (888)  722-9555,  x4210 (US
toll-free) and (203) 719-4210 (collect).

This document contains forward-looking  statements within the meaning of Section
27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act
of 1934.  Forward-looking  statements  include  estimates  and give our  current
expectations   or   forecasts  of  future   events.   Although  we  believe  our
forward-looking  statements are  reasonable,  they can be affected by inaccurate
assumptions or by known or unknown risks and uncertainties.


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.