Oilfield

Oilfield

Oilfield refers to a region with an abundance of oil wells extracting petroleum from below the ground.

Industry: Oil & gas

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Oilfield

Stock tank barrel

Oil & gas; Oilfield

A measure of the volume of treated oil stored in stock tanks. A stock tank barrel is commonly abbreviated as STB.

Thermal maturity

Oil & gas; Oilfield

The degree of heating of a source rock in the process of transforming kerogen into hydrocarbon. Thermal maturity is commonly evaluated by measuring vitrinite reflectance or by pyrolysis.

The electrical device used on the axle of a spool or reel to provide electrical continuity between the rotating reel core and the stationary reel chassis. When using a coiled tubing string equipped ...

Equivalent water resistivity

Oil & gas; Oilfield

The effective resistivity of the formation water or the mud filtrate, as it affects the electrochemical potential. The electrochemical potential is the main source of the spontaneous potential log. ...

Membrane potential

Oil & gas; Oilfield

The electromagnetic force generated across an ion-selective membrane when solutions on either side of the membrane have different salinities. Shales and clays are cationic membranes, since they allow ...

Early-time transient data

Oil & gas; Oilfield

The data observed before the start of radial flow (middle-time transient data). When not dominated by wellbore storage, these data may reveal near-wellbore reservoir features including limited entry, ...

Skewness

Oil & gas; Oilfield

The degree to which a distribution has lost the bilateral symmetry of a normal distribution. Skewness is usually expressed qualitatively rather than quantitatively.