18 July 2017

Water string

A string of casing used to shut off all water above an oil sand. It is often necessary to run more than one string before a […]
18 July 2017

Water table

The underground level at which water is found. This term is often used in connection with underground water supplies used for irrigation and industrial plants. Term […]
18 July 2017

Weevil

Shortened form of boll weevil. See boll weevil.
25 July 2017

Weight Indicator

An instrument near the driller’s position on a drilling rig that shows both the weight of the drill stem that is hanging from the hook (hook […]