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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

casing roller

Oil & gas; Oilfield

A heavy-duty downhole tool used to restore the internal diameter of collapsed or buckled casing. Casing rollers generally are configured with an incremental series of rollers that ...

layer-cake geometry

Oil & gas; Oilfield

A highly simplified description of a geological scenario. Although sometimes used for "quick and dirty" simulation models, this description is often not appropriate for detailed ...

box plots

Oil & gas; Oilfield

A grid pattern laid over a representation of fractures. The number of boxes that contain a fracture is counted and plotted against the box size on logarithmic scales. The slope of ...

cluster

Oil & gas; Oilfield

A group of data points having similar characteristics. These points are usually found by cluster analysis, and are sometimes used to determine electrofacies from wireline data.

micelle

Oil & gas; Oilfield

A group of round hydrocarbon chains formed when the surfactant concentration in an aqueous solution reaches a critical point. The micellar costs depend upon the cost of oil, since ...

tank battery

Oil & gas; Oilfield

A group of tanks that are connected to receive crude oil production from a well or a producing lease. A tank battery is also called a battery. In the tank battery, the oil ...

drop bar

Oil & gas; Oilfield

A heavy steel bar that is dropped through the tubing or running string to fire the percussion detonator on a tubing-conveyed perforating (TCP) gun assembly. The drop bar must be ...