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Oil & gas

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

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steady state

Oil & gas; Oilfield

A system that has reached equilibrium for the measurement or phenomenon concerned. In the case of permeability measurements on core samples, a steady state is reached when the ...

seal assembly

Oil & gas; Oilfield

A system of seals arranged on the component that engages in a sealbore to isolate the production-tubing conduit from the annulus. The seal assembly is typically longer than the ...

tubing grade

Oil & gas; Oilfield

A system of classifying the material specifications for steel alloys used in the manufacture of tubing.

telemetry

Oil & gas; Oilfield

A system for converting the measurements recorded by a wireline or measurements-while-drilling (MWD) tool into a suitable form for transmission to the surface. In the case of ...

Briggs color cube

Oil & gas; Oilfield

A system for color-coding three-dimensional information. This system is used in wireline log analysis to provide color shading in which the final color is determined by the values ...

vapor recovery unit

Oil & gas; Oilfield

A system composed of a scrubber, a compressor and a switch. Its main purpose is to recover vapors formed inside completely sealed crude oil or condensate tanks. The switch ...

crosswell seismic tomography

Oil & gas; Oilfield

A survey technique that measures the seismic signal transmitted from a source, located in one well, to a receiver array in a neighboring well. The resulting data are processed to ...