18 July 2017

Fracturing

Shortened form of formation fracturing. See formation fracturing.
10 November 2021

Full-Opening Safety Valve (FOSV)

Ball valves designed for high-pressure conditions, capable of holding pressure from both directions. The term “full opening” originates from when the ball valve is opened; the […]
18 July 2017

Gas hydrates

Gas hydrates are ice-like materials that are formed when gas and water are mixed together and are subjected to pressure and cold temperatures.
18 July 2017

Gas sand

A stratum of sand or porous sandstone from which natural gas is obtained.
18 July 2017

Gas show

The gas that appears in drilling fluid returns, indicating the presence of a gas zone.
18 July 2017

Gas-cut mud

A drilling mud that has entrained formation gas, giving the mud a characteristically fluffy texture. When entrained gas is not released before the fluid returns to […]
18 July 2017

Gas-oil ratio

A measure of gas produced with the oil. It is expressed in cubic ft per barrel.
25 July 2017

Geologist

A scientist who gathers and interprets data pertaining to the rocks of the earth’s crust.
25 July 2017

Geolograph

Patented device which records the rate of penetration during drilling operations. Sometimes referred to as a “tattletale.”
18 July 2017

Geology

The science of the physical history of the earth and its life, especially as recorded in the rocks of the crust.
10 November 2021

Global Positioning Satellite (GPS)

Satellites developed in order to allow accurate determination of geographical locations. GPS systems, usually consisting of 4 satellites, transmit information, which allows a civil and military […]