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Oil & gas

Terms concerning oil and gas as a fossil fuel and natural resource.

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Oil & gas > Oilfield

oil in place

Oil & gas; Oilfield

An estimated measure of the total amount of oil contained in a reservoir, and, as such, a higher figure than the estimated recoverable reserves of oil.

cap rock

Oil & gas; Oilfield

An impervious layer of rocks (e g shale or evaponte) which overlies a reservoir, rock, thus preventing hydrocarbons from escaping to the surface.

creep

Oil & gas; Oilfield

The process whereby a pipeline expands and becomes longer due to high pressure or temperature variation of its contents.and thus tends to shift its position on the sea bed.

polyethylene (polythene)

Oil & gas; Oilfield

A polymer formed by joining ethylene molecules together, one of the most important plastics.

crude assay

Oil & gas; Oilfield

A procedure for determining the general distillation and quality characteristics of crude oil.

commercial field

Oil & gas; Oilfield

An oil and/or gas field judged to be capable of producing enough net income to make it worth developing.

producing horizon

Oil & gas; Oilfield

Rock from which oil or gas is produced.