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Oil & gas

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

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Oil & gas > Drilling

mafic

Oil & gas; Drilling

Pertaining to minerals or igneous rocks composed of minerals that are rich in iron and magnesium, dense, and typically dark in color. The term comes from the words magnesium and ...

felsic

Oil & gas; Drilling

Pertaining to minerals or igneous rocks composed of minerals such as quartz and feldspar that are relatively light in color and density. The word comes from the terms feldspar and ...

allochthonous

Oil & gas; Drilling

Pertaining to materials, particularly rock masses, that formed somewhere other than their present location, and were transported by fault movements, large-scale gravity sliding, ...

pozzolanic

Oil & gas; Drilling

Pertaining to material that possesses little or no cementitious value, but that is capable of reacting chemically with calcium hydroxide at ordinary temperatures to form compounds ...

electromagnetic propagation

Oil & gas; Drilling

Pertaining to logs that measure the properties of electromagnetic waves as they move through a formation. Measurements-while-drilling (MWD) propagation resistivity logs work ...

hydrothermal

Oil & gas; Drilling

Pertaining to hot fluids, particularly hot water, or the activity of hot water, or precipitates thereof. Hydrothermal alteration can change the mineralogy of rock, producing ...

downstream

Oil & gas; Drilling

Pertaining to equipment, facilities or systems that are located in the production train after the surface choke, typically attached or close to the Christmas tree.