18 July 2017

Doghouse

1) a small enclosure on the rig floor used as an office for the driller and as a storehouse for small objects. 2) any small building […]
18 July 2017

Dogleg

A term applied to a sharp change in direction of the wellbore, usually resulting in abnormal fatigue to the drill stem and frequently resulting in key […]
18 July 2017

Dope

A generic term applied to all types of thread lubricants.
18 July 2017

Double

A length of drill pipe, casing, or tubing consisting of two joints screwed together. Compare fourble, thribble. See joint.