دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device, installed near the bottom of the hole, that blocks passage through the annular space between two strings of pipe. See packer.

n: A tool installed in the downhole, used to packoff the annular between two columns.

n: a bridge plug or cement plug placed near the bottom of the bole to shut off a depleted, water-producing, or unproductive zone.

n: Refers to the cement plug or bridge plug located in the downhole, used to packoff depleted formation and water yield formation.

n: 1. the pressure at the bottom of a borehole. It is caused by the hydrostatic pressure of the wellbore fluid and, sometimes, by any back-pressure held at the surface, as when the well is shut in with blowout preventers. When mud is being circulated, bottomhole pressure is the hydrostatic pressure plus the remaining circulating pressure required to move the mud up the annulus. 2. the pressure in a well at a point opposite the producing formation, as recorded by a bottomhole pressure bomb.

n: The pressure at the bottom of the borehole, or at a point opposite the production formation.

n: a pressuretight container (bomb) used to record the pressure in a well at a point opposite the producing formation.

n: an instrument to measure bottomhole pressure. Also called bottomhole pressure bomb.

n: a test that measures the reservoir pressure of the well, obtained at a specific depth or at the midpoint of the producing zone. A flowing bottomhole pressure test measures pressure while the well continues to flow;a shut-in bottomhole pressure test measures pressure after the well has been shut in for a specified period of time. See bottomhole pressure. bottomhole pressure gauge.

n: any of the rod pumps, high-pressure liquid pumps, or centrifugal pumps located at or near the bottom of the well and used to lift the well fluids. See centrifugal pump. hydraulic pumping. submersible pump. sucker rod pumping.

n: a device used to separate oil and gas at the bottom of wells to increase the volumetric efficiency of the pumping equipment.

n: temperature measured in a well at a depth at the midpoint of the thickness of the producing zone.

n pi: 1. the liquids and the residue that collect in the bottom of a vessel (such as tank bottoms) or that remain in the bottom of a storage tank after a period of service.2. the residual fractions remaining at the bottom of a fractionating tower after lighter components have been distilled off as vapours.