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Gas occurring in combination with crude oil, as distinct from gas occurring separately or manufactured from crude oil.

American Society for Testing Material which establishes many of the technical standards used in the oil industry

A measurement used in the oil industry for a unit of volume of oil or oil products equivalent to 158.978 litres or 42 US gallons. Abbreviated to "bbl".

A unit of measurement used in the industry for the production rates of oil fields, pipelines, and transportation. Abbreviated to "bpd", "b/d" or "bbl/d".

Industry measurement of actual refinery throughput as opposed to designed capacity. Derived by dividing the number of refined barrels of oil by the actual number of days the refinery was in operation. Abbreviated to "b/cd".

Crude oil or heavy fuel oil from the bottom of the refining process as opposed to "white" oil.

Refinery process using a catalyst whereby heavy heavy gas oil is converted to about 50% gasoline and 50% gases and gas oil for recycling.

A term used to describe light liquid hydrocarbons separated from crude oil after production and sold separately.