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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

allogenic

Oil & gas; Oilfield

Pertaining to minerals or rock fragments that formed in one location but were transported to another location and deposited. Clastic sediments in a rock such as sandstone are ...

authigenic

Oil & gas; Oilfield

Pertaining to minerals or materials that grow in place with a rock, rather than having been transported and deposited. These include quartz, chlorite and other pore-filling ...

mafic

Oil & gas; Oilfield

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; Oilfield

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; Oilfield

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

electromagnetic propagation

Oil & gas; Oilfield

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

downstream

Oil & gas; Oilfield

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.