18 July 2017
A device to which the deadline is attached, securely fastened to the mast or derrick substructure. Also called a dead-line anchor.
18 July 2017
A mechanical slope indicator that consists of a ball rolling on a calibrated surface within a liquid filled enclosure that gives a visual indication of the […]
18 July 2017
The device used to remove unwanted gas from a liquid, especially from drilling fluid.
18 July 2017
The mass or weight of a substance per unit volume. Specific gravity, relative density, and API gravity are other units of density. See API gravity, specific […]