18 July 2017

Deadline tie-down anchor

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

Deadman

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 […]
10 November 2021

Deepwater Well Control Guidelines (DWWCG)

A comprehensive document from IADC on well planning, well control procedures, equipment, emergency response and training issues specific to deepwater drilling
18 July 2017

Degasser

The device used to remove unwanted gas from a liquid, especially from drilling fluid.