Month: July 2009

Drilling fluid including most fluids used in hydrocarbon drilling operations. See also drilling fluid

The mass per unit volume of a drilling fluid. Weight is reported in lbm/gal (also known as ppg), kg/m3 or g/cm3 (also called specific gravity or SG)

Drilling fluid mounted system compartments that can be moved from location to location either as part of a rig or separately

A person responsible for testing the mud at a rig and for prescribing mud treatments to maintain mud weight, properties and chemistry within recommended limits

The measurement versus depth or time, or both, of one or more physical quantities in or around a well. The term comes from the word “log” used in the sense of a record or a note. Wireline logs are taken downhole, transmitted through a wireline to surface and recorded there. Mud logs that describe samples of drilled cuttings are taken and recorded on surface.