دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

usually reverse circulation

v: see reverse circulation.

n: the movement of drilling fluid out of the mud pits, down the drill stem, up the annulus, and back to the mud pits. See normal circulation, reverse circulation.

n: The movement of drilling fluid through the flow system on a drilling or workover rig. This circulation starts at the suction pit and goes through the mud pump, drill pipe, bit, annular space in the hole, flowline, fluid pits, and back again to the suction

n: all the other architectures are similar to reverse circulation junk basket except valve architecture.

n: the process of pumping mud downward to the bit and back up to the surface in a drilling or workover operation. See normal circulation, reverse circulation. mud cleaner n: a cone-shaped device, a hydro-cyclone, designed to remove very fine solid particles from the drilling mud.

n: the procedure that pump the mud through the bit and then reture to the ground when drilling or workover.

n: the smooth, uninterrupted circulation of drilling fluid down the drill stem, out the bit, up the annular space between the pipe and the hole, and back to the surface. Compare reverse circulation.

n: the circulation that the fluid from the the volume, bit and annular and reture to the ground evenly and perpetual.


circulation down the tubing and up the annulus.

n: the course of drilling fluid downward through the annulus and upward dlrough the drill stem, in contrast to normal circulation in which the course is downward through the drill stem and upward through the annulus. Seldom used in open hole, but frequently used in workover operations. Also refers to as circulating the short way," since returns from bottom can be obtained more quickly than in normal circulation. Compare normal circulation.

n: A kind of coring ways ,which can be favour of the core coming into the barrel and increase the chance of getting core.

n: A kind of preventing blowout ways .