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

Cleanout tools

Oil & gas; Drilling

The tools or instruments, such as bailers and swabs, used to clean out an oilwell.

Gas well

Oil & gas; Drilling

A well that primarily produces gas. Legal definitions vary among the states.

A measure of the density of a drilling fluid expressed as pounds per gallon, pounds per cubic foot, or kilogrammes per cubic metre. Mud weight is directly related to the amount of pressure the column ...

Gas lift

Oil & gas; Drilling

The process of raising or lifting fluid from a well by injecting gas down the well through tubing or through the tubing-casing annulus. Injected gas aerates the fluid to make it exert less pressure ...

Mud return line

Oil & gas; Drilling

A trough or pipe that is placed between the surface connexions at the wellbore and the shale shaker.

Tripping

Oil & gas; Drilling

The operation of hoisting the drill stem out of and returning it into the wellbore.

Gas-cut mud

Oil & gas; Drilling

A drilling mud that contains entrained formation gas, giving the mud a characteristically fluffy texture. Gas cut mud may cause a lowering of mud weight.