Drilling

Drilling

Of or relating to the penetration of the Earth's surface in order to extract petroleum oil.

Industry: Oil & gas

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Drilling

Mud centrifuge

Oil & gas; Drilling

A device that uses centrifugal force to separate small solid components from liquid drilling fluid.

Gone to water

Oil & gas; Drilling

Pertaining to a well in which production of oil has decreased and production of water has increased (for example, “the well has gone to water”).

Nipple up

Oil & gas; Drilling

In drilling, to assemble the blowout preventer stack on the wellhead at the surface.

Resistivity well logging

Oil & gas; Drilling

The recording of the resistance of formation water to natural or induced electrical current. The mineral content of subsurface water allows it to conduct electricity. Rock, oil, and gas are poor ...

Undergauge bit

Oil & gas; Drilling

A bit whose outside diameter is worn to the point at which it is smaller than it was when new. A hole drilled with an undergauge bit is said to be undergauge.

Geologist

Oil & gas; Drilling

A scientist who gathers and interprets data pertaining to the formations of the earth’s crust.

Collar locator

Oil & gas; Drilling

A logging device used to determine accurately the depth of a well; the log measures and records the depth of each casing collar, or coupling, in a well.