FOSSIL FUEL: An energy source formed in the Earth’s crust from decayed organic material.
GAS: A non-solid, non-liquid combustible energy source that includes natural gas, coke-oven gas, blast-furnace gas, and refinery gas.
GAS WELL: A well completed for production of natural gas from one or more gas zones or reservoirs.
GEOTHERMAL ENGERGY: Hot water or steam extracted from geothermal reservoirs in the earth’s crust.
HYDROCARBON: Organic compound of hydrogen and carbon in the gaseous, liquid, or solid phase.
LIQUEFIED NATURAL GAS: (LNG) Natural gas (primarily methane) that has been liquefied by reducing its temperature to -260 degrees Fahrenheit at atmospheric pressure.
METHANE: A colorless, flammable, odorless hydrocarbon gas (CH4) which is a major component of natural gas.
NATURAL GAS: A gaseous mixture of hydrocarbon compounds, the primary one being methane.
OIL: A mixture of hydrocarbons usually existing in the liquid state in natural underground pools or reservoirs.
OIL SHALE: A sedimentary rock containing kerogen, a solid organic material.
PETROCHEMICALS: Organic and inorganic compounds and mixtures of petroleum-based chemicals.
PETROLEUM: A broadly defined class of liquid hydrocarbon mixtures. Included are crude oil, lease condensate, unfinished oils, refined products obtained from the processing of crude oil, and natural gas plant liquids.
PIPELINE: (Natural Gas) A continuous pipe conduit, complete with such equipment as valves, compressor stations, communications systems, and meters for transporting natural and/or supplemental gas from one point to another.
REFINERY: An installation that manufactures finished petroleum products from crude oil, unfinished oils, natural gas liquids, other hydrocarbons, and oxygenates.