18 July 2017
A fishing tool used to retrieve pipe lost in a well. The spear is lowered down the hole and into the lost pipe. When weight, torque, […]
25 July 2017
The ratio of the weight of a given volume of a substance at a given temperature to the weight of an equal volume of a standard […]
18 July 2017
An operation designed to indicate the point at which fluids are escaping from the wellbore into a cavernous or porous formation. Also used to determine point […]
18 July 2017
A spool attachment on the makeup cathead to permit use of a spinning chain to spin up or make up drill pipe. See spinning chain.