Blowout Preventer

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blowout preventer

[′blō‚au̇t pri‚ven·tər]
(petroleum engineering)
Any one of several types of valves used on the wellhead to prevent the loss of pressure either in the annular space between drill pipe and casing or in the open hole during drilling completion operations.

Blowout Preventer


a device for the hermetic sealing of a well during drilling. It is used to prevent the open gushing of oil or gas.

References in periodicals archive ?
The yard is divided into areas dedicated to drill pipes and collars, as well as general cargo, blow-out preventer (BOP) parts, open-top containers, and heavy machinery.
In down-hole oil drilling and oil wells, elastomer gaskets are used in applications such as packer elements, blow-out preventer elements, O-rings, and gaskets.
Through the deal, Proserv, which is based in the UK and engages in the provision of energy production technology services, cements its presence in the drilling and production controls market and is able to expand its suite into subsea blow-out preventer (BOP) controls and services, the buyer said.
The Chinese contributors propose a down-hole blow-out preventer, a material selection model based on total life cycle design, a reliable wireless network architecture using distributed control, and a method analyzing the relationship between geographical factors and protein content in winter wheat.
The maker of the Deepwater Horizon blow-out preventer that failed to stop last year's massive oil spill in the Gulf of Mexico, has agreed to pay 250 million dollars (pounds 160 million) to BP under a legal settlement, the oil giant said.
In early November, Sevan Marine announced that Sevan Driller was off-hire for up to 20 days from 2 November 2010, due to a jammed blow-out preventer (BOP).
A major spill was averted only when the blow-out preventer was activated, capping off the well on the sea floor.
The negative pressure test was accepted when it should not have been, there were failures in well control procedures and in the blow-out preventer; and the rig's fire and gas system did not prevent ignition.
The whole system design seems to have been based on the assumption that the blow-out preventer would fully shut the well.
The rig's blow-out preventer, a protective valve, should have sealed the well but failed to operate.
Today BP was expected to begin the process of removing the cap and failed blow-out preventer, another step toward completion of a relief well that would put a final seal on the well.