Oil & gas

Oil & gas

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

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Oil & gas > Drilling

making a connection

Oil & gas; Drilling

The act of screwing a length of drill pipe onto a drill string suspended in a well bore, i e lengthening the drill string by one section of pipe during a drilling operation.

bottom hole assembly (bha)

Oil & gas; Drilling

The lower end of the drill string comprising the drill bit, drill collars, heavyweight drill pipe and ancillary equipment.

appraisal well

Oil & gas; Drilling

A well drilled as part of an appraisal drilling program.

appraisal drilling

Oil & gas; Drilling

Drilling carried out to determine the physical extent, reserves and likely production rate of a field.

casing perforation

Oil & gas; Drilling

The holes that are made in the liner of a finished well in order to allow oil or gas to flow into the production tube, generally produced by a series of shaped charges fitted ...