Associated gas

Natural gas produced with crude oil from the same reservoir.

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 tree.

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 production casing is the last one set. The production tubing (through which hydrocarbons flow to the surface) will be…

Gas produced with oil in oil wells. The gas is taken from the well through the casinghead at the top of the well. (Louisiana Mid-Continent Oil and Gas Association, n.d.)

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

A long, 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.

An engine used to increase the pressure of natural gas so that it will flow more easily through a pipeline.