دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

canisters of hydraulic fluid, pressurized with a nitrogen gas cap of sufficient pressure and volume to operate all the rams on a BOP in case of power failure to the BOP.

n: see float collar.

n: The collar with back pressure control valve, installed at the bottom of casing string. Prevents drill fluid entering into casing and decreases the weight of casing by buoyance. Also prevent cement recirculating when cementing.

n: see float shoe.

n: The Steel and round nipple with back pressure control valve, installed at the bottom of casing string. Leading casing entering into the wellbore and preventing drill fluid entering into the casing to decrease the weight of casing.

n: a pipe attached to the blowout preventer stack out of which kick fluids and mud can be pumped to the choke manifold when a blowout preventer is closed in on a kick.

n: A high-pressure pipe leading from an outlet on the BOP stack to the backpressure choke and associated manifold. During well-control operations, the fluid under pressure in the wellbore flows out of the well through the choke line to the choke, reducing th

a drilling and workover pressure control device. A line that attached to the BOP stack and through which kick fluids can be circulated when the BOP is closed.

n: an arrangement of piping and special valves, called chokes. In drilling, mud is circulated through a choke manifold when the blowout preventers are closed. In well testing, a choke manifold attached to the wellhead allows flow and pressure control for test components down- stream.

n: A set of high-pressure valves and associated piping that usually includes at least two adjustable chokes, arranged such that one adjustable choke may be isolated and taken out of service for repair and refurbishment while well flow is directed through the

a set of valves and/or chokes used to control drilling fluid returns on a drilling well or, in a few cases, used to control flow from a high rate well where the chokes may be in parallel or series.

n: The package of equipment required to run a coiled tubing operation. Four basic components are required: the coiled tubing reel to store and transport the coiled tubing string, the injector head to provide the tractive effort to run and retrieve the coiled

the CT, reel, injector head, power pack, control unit and pressure control equipment used in a coiled tubing job.

n: a method for killing well pressure in which circulation is commenced immediately and mud weight is brought up in steps, or increments, usually a point at a time. Also called circulate- andweight method.

n: See circulate-and-weight method.

a well pressure control operation in which circulation is started immediately and mud density is brought up in steps until the well has been completely circulated to the kill weight fluid.

n: a surface device used in pressure control for slickline. See also lubricator.

a pressure control method for forming a pressure seal around braded line and electric line. Grease is injected between special tubes in a high pressure housing. The tubes are slightly larger than the line and grease seals the remaining area.

n: that branch of engineering which treats of liquids in motion, or its action. It is the know-how about the effects of fluid velocities and pressures and the power involved. The pressure of either a standing or amoving column of fluid is directly related to

a general term referring to how fluids move and unloads cuttings, etc. in a well. Most common in drilling to insure claring and effective pressure control.

n: a kinds of well control training that the worker does not need realease production and trains in filed.