18 July 2017

Sidewall coring

A coring technique in which core samples are obtained from the hole wall in a zone that has already been drilled. A hollow bullet is fired […]
18 July 2017

Single

A joint of drill pipe. Compare double, thribble, and fourble.
18 July 2017

Skidding the rig

Moving a rig from the location of a lost or completed hole preparatory to starting a new one. In skidding the rig, the move is accomplished […]
25 July 2017

Slips

Wedge-shaped pieces of metal with serrated inserts (dies) or other gripping elements, such as serrated buttons, that suspend the drill pipe or drill collars in the […]