Chesapeake Energy 1999 Annual Report Download - page 22

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Glossary
The terms defined in this section are used throughout this Form 10-K.
Bcf Billion cubic feet.
Bcfe. Billion cubic feet of gas equivalent.
Bbl. One stock tanic barrel, or 42 U.S. gallons liquid volume, used herein in reference to crude oil or other liquid
hydrocarbons.
Btu. British thermal unit, which is the heat required to raise the temperature of a one-pound mass of water from
58.5 to 59.5 degrees Fahrenheit.
Commercial Well; Commercially Productive Well. An oil and gas well which produces oil and gas in sufficient
quantities such that proceeds from the sale of such production exceed production expenses and taxes.
DevelopedAcreage. The number of acres which are allocated or assignable to producing wells or wells capable
of production.
Development Well. A well drilled within the proved area of an oil or gas reservoir to the depth ofa stratigraphic
horizon known to be productive.
Dry Hole; Dry Well. A well found to be incapable of producing either oil or gas in sufficient quantities to justifj
completion as an oil or gas well.
Exploratory Well. A well drilled to find and produce oil or gas in an unproved area, to find a new reservoir in a
field previously found to be productive of oil or gas in another reservoir or to extend a known reservoir.
Farmout. An assignment of an interest in a drilling location and related acreage conditional upon the drilling of a
well on that location.
Formation. A succession of sedimentary beds that were deposited under the same general geologic conditions.
Full-Cost Pool. The full-cost pool consists of all costs associated with property acquisition, exploration, and
development activities for a company using the full-cost method of accounting. Additionally, any internal costs that
can be directly identified with acquisition, exploration and development activities are included. Any costs related to
production, general corporate overhead or similar activities are not included.
Gross Acres or Gross Wells. The total acres or wells, as the case may be, in which a working interest is owned.
Horizontal Wells. Wells which are drilled at angles greater than 70 from vertical.
MBb1. One thousand barrels of crude oil or other liquid hydrocarbons.
MBtu. One thousand Btus.
Mcf One thousand cubic feet.
Mcfe. One thousand cubic feet of gas equivalent.
MMBb1. One million barrels of crude oil or other liquid hydrocarbons.
MMBtu. One million Btus.
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