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 engineer

Oil & gas; Drilling

An employee of a drilling fluid supply company whose duty it is to test and maintain the drilling mud properties that are specified by the operator.

Travelling block

Oil & gas; Drilling

An arrangement of pulleys, or sheaves, through which drilling cable is reeved, which moves up or down in the derrick or mast.

One of the two valves in a sucker rod pumping system. It moves with the movement of the sucker rod string. On the upstroke, the ball member of the valve is seated, supporting the fluid load. On the ...

Mud cake

Oil & gas; Drilling

The sheath of mud solids that forms on the wall of the hole when liquid from mud philtres into the formation. Also called philtre cake or wall cake.

Reeve (the line)

Oil & gas; Drilling

To string a wire rope drilling line through the sheaves of the travelling and crown blocks to the hoisting drum.

Choke line

Oil & gas; Drilling

A line, or pipe, that runs from the blowout preventer stack to the choke manifold through which fluid from the hole is flowed when the well is shut in with the blowout preventer.

Gamma ray log

Oil & gas; Drilling

A type of radioactivity well log that records natural radioactivity around the wellbore. Shales generally produce higher levels of gamma radiation and can be detected and studied with the gamma ray ...