Definition(s)
Drilling Fluid
Water or oil-based fluid that is circulated down the drill pipe into the well and back up the annulus to the rig for purposes including containment of formation pressure, the removal of cuttings, bit lubrication and cooling, treating the wall of the well, and acting as a media for the pulsed transmission of well and drilling data to surface.
Source: API Specification 16Q, Design, Selection, Operation, and Maintenance of Marine Drilling Riser Systems, Second Edition, April 2017. Global Standards
Drilling Fluid
Any liquid or slurry pumped down the drill string and up the annulus of a hole during the drilling operation.
Source: API RP 13C, Recommended Practice on Drilling Fluids Processing Systems Evaluation, Upstream Segment, Fourth Edition, December 2010. Global Standards
Drilling Fluid
A water or oil-based fluid circulated down the drillpipe into the well and back up to the rig for purposes including containment of formation pressure, the removal of cuttings, bit lubrication and cooling, treating the wall of the well and providing a source for well data.
Source: API RP 16Q, Recommended Practice for Design, Selection, Operation and Maintenance of Marine Drilling Riser Systems, First Edition, November 1993 (Reaffirmed August 2001). Global Standards
Source: ISO 13624-1:2009, Petroleum and natural gas industries – Drilling and production equipment – Part 1:Design and operation of marine drilling riser equipment. Global Standards
Drilling Fluid
“Drilling fluid” means any fluid used for the purpose of drilling a well.
Source: Alaska Oil and Gas Conservation Commission, Definitions, Alaska Admin. Code tit. 20, § 25.990, December 7, 2012. Regulations
Drilling Fluid
Drilling fluid: fluid for the construction of the borehole, to which materials or preparation of whatever content have been added.
Source: Mining Regulation of the Netherlands, WJZ 02063603, Netherlands,16 December 2002. Regulations