Maintenance work performed on an oil or gas well to improve or maintain the production.

Natural gas produced with crude oil from the same reservoir.

A unit of measure for oil and petroleum products that is equivalent to 42 U.S. gallons.

The uncontrolled flow of gas, oil or other fluids from a well.

The equipment installed at the wellhead to control pressures in the annular space between the casing and drill pipe or tubing during drilling, completion, and workover operations. See also Christmas t [..]

See produced water

A measure of the heating value of a fuel

Metal pipe inserted into a wellbore and cemented in place to protect both subsurface formations (such as groundwater) and the wellbore. A surface casing is set first to protect groundwater. The produc [..]

The assembly of valves, pipes, and fittings used to control the flow of oil and gas from a well.

Along, small diameter pipe flexible enough to be stored on and deployed from a large, truck-mounted roll. Used to replace jointed pipe in certain types of drilling, completion, and workover operations [..]