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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

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.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
[ClickPress, Thu May 09 2019] Looking at the current market trends as well as the promising demand status of the " Blowout Preventer market ", it can be projected that the future years will bring out positive outcomes.
Patterson workers allegedly received reports that the actuator, the hydraulic equipment that automatically closes the valves on the blowout preventer, was not properly maintained, including a lab test witha skull and crossbones.
"The problems with this blowout preventer were worse than we understood," Daniel Horowitz, managing director of the board, told AP.
But ''The problems with this blowout preventer were worse than we understood,'' safety board managing director Daniel Horowitz said in an interview.
To prevent this situation, modern rigs are equipped with blowout preventers, or BOP stacks, huge structures that sit on the sea floor directly over the wellhead.
The suit also accuses BP of failing to replace the batteries in a blowout preventer, which did not automatically activate as intended.
At that point, the crew activated the blowout preventer. This was a tower of valves and rams that sat on top of the well.
Upon arrival, the crew lowered and secured its 53-foot high, 450-ton blowout preventer (BOP) onto the wellhead (see Figure 1).
By the second day of the spill, the government and BP acknowledged that hydrocarbons were escaping at the seafloor and that BP's blowout preventer, a last resort safety device, had failed.
It analyzes the performance of the technologies and practices used, including the blowout preventer and related technology features, and recommends a number of actions that industry and regulators should take to decrease the risk of danger in future drilling operations.