دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

a flow control valve that provides some control when running or pulling a string.

n: 1. a valve used to regulate back-pressure on equipment or systems through which a fluid flows. 2. a valve used to regulate automatically a uniform pressure on the inlet side of the valve.

back pressure valve.

a quick opening, low pressure valve, common on large openings through which solids will move, that allows high flow rate when open.

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: a valve used to regulate automatically a uniform difference in pressure between two locations in a pipeline.

n: a annex with two inverted valves and connected with the bottom of the tail pipe

n: the jet dribe shoe with a back pressure valve

n: the valve located above the dual closed-in-pressure valve ,and when this valve is opened the fluid in the pipe inverse circulation out of the pipe