دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

adj: pertaining to the annulus. The annulus is sometimes referred to as the annular space.

n: a large valve, usually installed above the ram preventers, that forms a seal in the annular space between the pipe and the wellbore or, if no pipe is present, in the wellbore itself. Compare ram blowout preventet:

n: See annular blowout preventer.

a device installed above or below the BOP that is capable of sealing around any device, and even on itself if the wellbore is empty.

n: The percentage of cutting in the annular space carried by drilling fluid.

n: The cross-section area of annular space between drill column and borehole wall.

n: The pressure that drilling fluid overcomes friction when it flow in the annular space.

n: fluid pressure in an annular space, as around tubing within casing.

pressure in an annular area. May be a vented or trapped annuli.

n: A large BOP (q.v.) valve that forms a seal in the annular space between the wellbore and the drill pipe. It is usually installed above the ram type preventers in the BOP stack.

a elastomer bag or donut type seal, pushed into contact with the pipe or tools in the blow out preventer (BOP). It is designed to seal around pipe or any other irregular surface tool (packers, guns, pumps, etc.) that may be in the BOP. May also be called

n: the space between two concentric circles. In the petroleum industry, it is usually the space surrounding a pipe in the wellbore, or the space between tubing and casing, or the space between tubing and the well bore;sometimes termed the annulus.

n: The space between a pipe and a hole. The space between drillstring and hole or casing is an Annulus.

n: the rate at which mud is travelling in the annular space of a drilling well.

n: The linear velocity of a fluid passing through an annular space. The term critical annular velocity is often used to describe the flow rate or velocity at which entrained solids will be efficiently transported by the annular fluid. If the fluid velocity f

the velocity of fluids flowing in the annulus. Important in clean-up and displacement processes.

n: see annular space.

n: The space between a pipe and a hole. The space between drillstring and hole or casing is an Annulus.

The area between the O.D. of an inside string and the ID of an outside string.