Steel pipe placed in an oil or gas well as drilling progresses to prevent the wall of the hole from caving in during drilling, to prevent […]

A device secured around the casing at regular intervals to center it in the hole. Casing that is centralized allows a more uniform cement sheath to […]

A tubular section of pipe that is threaded inside and used to connect two joints of casing.

See Elevators.

See Guide shoe.

A derrick- or mast-fixed arm that is deployed solely for running casing. It provides stability and control in the running of casing singles.

The entire length of all the joints of casing run in a well. Casing is manufactured in lengths of about 30 ft (9 m), and each […]

A heavy, flanged steel fitting connected to the first string of casing. It provides a housing for slips and packing assemblies, allows suspension of intermediate and […]

A spool-shaped attachment on the end of the catshaft around which rope for hoisting and pulling is wound. Also called Automatic cathead. See Breakout cathead, Makeup […]

A hoisting or pulling line powered by the cathead and used to lift heavy equipment on the rig. See Cathead.

Elongated platform adjacent to the rig floor where pipe is laid out and lifted into the derrick. The catwalk is connected to the rig floor by […]

See Horizontal tubular transfer.