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Chesapeake Energy Corporation 2006 Annual Report
11
To help investors more easily analyze Chesapeake’s extensive drilling inventory, we divide it into four play types: conventional gas
resource, unconventional gas resource, emerging gas resource and Appalachian Basin gas resource. The company’s current leasehold
and proved reserve, risked, unproved reserve and unrisked, unproved reserve totals by play type are set forth below:
•3.2 million net acres in our traditional conventional
plays (i.e., much of the Mid-Continent, Permian, Gulf
Coast, South Texas and other areas) on which we have
identified approximately 3,500 drillsites, 3.9 tcfe of proved
reserves, approximately 3.1 tcfe of risked, unproved reserves
and approximately 20 tcfe of unrisked, unproved reserves;
•1.3 million net acres in our unconventional gas resource
plays (i.e., Fort Worth Barnett Shale, Sahara, Granite/
Atoka/Colony Washes, and Ark-La-Tex tight sands) on
which we have identified approximately 9,800 drillsites,
3.4 tcfe of proved reserves, approximately 6.6 tcfe of risked,
unproved reserves and approximately 11 tcfe of unrisked,
unproved reserves;
•2.7 million net acres in our emerging gas resource plays
(i.e., Fayetteville Shale, Delaware Barnett and Woodford
Shales, Deep Haley, Deep Bossier and others) on which
we have identified approximately 3,300 drillsites, 0.2 tcfe
of proved reserves, approximately 5.6 tcfe of risked,
unproved reserves and approximately 36 tcfe of unrisked,
unproved reserves; and
•3.5 million net acres in the Appalachian Basin, where
our play types range from conventional to unconventional
to emerging gas resource. On the significant Appalachian
Basin acreage base primarily acquired in our November
2005 acquisition of Columbia Natural Resources, we
have identified approximately 9,000 drillsites, 1.5 tcfe of
proved reserves, approximately 2.4 tcfe of risked, unproved
reserves and approximately 4 tcfe of unrisked, unproved
reserves.
The company continues to actively acquire more acreage throughout our operating areas. In 2006, we acquired 1.9 million net
acres through an aggressive land acquisition program currently utilizing almost 2,000 contract landmen in the field. This is an
unsurpassed commitment to ensure Chesapeake will always have a substantial backlog of value-creating projects for its investors.