18 July 2017

Substructure

The foundation on which the derrick or mast and usually the drawworks sit. It contains space for storage and well control equipment.
18 July 2017

Suction pit

Also called a suction tank, sump pit, or mud suction pit. See suction tank.
18 July 2017

Suction tank

The mud tank from which mud is picked up by the suction of the mud pumps. Also called a suction pit.
18 July 2017

Surface casing

The first string of casing (after the conductor pipe) that is set in a well. It varies in length from a few hundred to several thousand […]