The summation of all proved, probable and possible reserves in a resevoir.

Stock tank barrel, or 42 U.S. gallons liquid volume.

Billion cubic feet of natural gas.

Billion cubic feet equivalent, determined using the ratio of six Mcf of natural gas to one Bbl of crude oil, condensate or natural gas liquids.

The number of acres that are allocated or assignable to productive wells or wells capable of production.

The total acres or wells, as the case may be, in which a working interest is owned.

A drill rig operation of drilling vertically to a defined depth and then mechanically steering the drill bit to drill horizontally within a designated zone typically defined as the prospective pay zone to be completed for oil and or gas.

The injection of water, sand and additives under pressure, usually down casing that is cemented in the wellbore, into prospective rock formations at depth to stimulate natural gas and oil production.

Thousand barrels of crude oil or other liquid hydrocarbons.

Thousand cubic feet of natural gas.