Blowout preventer operating and control system
The assembly of pumps, valves, lines, accumulators, and other items necessary to open and close the blowout preventer equipment. also called closing unit.
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The assembly of pumps, valves, lines, accumulators, and other items necessary to open and close the blowout preventer equipment. also called closing unit.
A blowout preventer placed on the seafloor for use by a floating offshore drilling rig.
A blowout preventer that uses rams to seal off pressure on a hole that is with or without pipe. also called a ram preventer.
1. one of several valves installed at the wellhead to prevent the escape of pressure either in the annular space between the casing and drill pipe or in open hole (i.e., hole with no drill pipe) during drilling completion operations. blowout preventers on land rigs are located beneath the rig at the land’s surface; on [...]
A dart-shaped drill pipe inside blowout preventer installed on top of the drill stem when the well is kicking through the drill stem. it is stabbed in open then closed against pressure.
A preventer having a unit of packing material whose closure depends on well pressure coming from below. it is used primarily to strip pipe through the hole or allow pipe to be moved with pressure on the annulus.
The speed at which drilling fluid or cement moves in the annulus. it is important to monitor annular velocity to ensure that the hole is being properly cleaned of cuttings, cavings and other debris while avoiding erosion of the borehole wall.
the annular velocity is commonly expressed in units of feet per minute or, less commonly, meters per [...]
The space surrounding one cylindrical object placed inside another, such as the space surrounding a tubular object placed in a wellbore. also known as annulus.
A manually operated ram preventer especially adapted for closure around a wireline.
A manually operated ram preventer especially adapted for closure around a wireline.
A blowout preventer that uses shear rams as closing elements.
A ram device used to close the annular space around the polished rod or sucker rod in a pumping well.
See ram blowout preventer.
A sealing component for a blowout preventer that closes the annular space between the pipe and the blowout preventer or wellhead.
A blowout preventer that uses pipe rams as the closing elements. see pipe ram.