18 July 2017

Relative permeability

The ratio of effective permeability to absolute permeability. The relative permeability of rock to a single fluid is 1.0 when only that fluid is present, and […]
18 July 2017

Reserve pit

1) [obsolete] a mud pit in which a supply of drilling fluid is stored. 2) a waste pit, usually an excavated earthen-walled pit. It may be […]
18 July 2017

Reservoir

A subsurface, porous, permeable rock body in which oil and/or gas has accumulated. Most reservoir rocks are limestones, dolomites, sandstones, or a combination. The three basic […]
18 July 2017

Reservoir pressure

The average pressure within the reservoir at any given time. Determination of this value is best made by bottomhole pressure measurements with adequate shut-in time. If […]