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US 2019/0162039 A1Published application
Blowout preventers with pressure-balanced operating shafts
AssigneeCameron International Corporation
InventorNicolas Arteaga
Life of this patent
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Abstract
Blowout preventers with pressure-balanced operating shafts are provided. In one embodiment, a blowout preventer includes a hollow body having a bore and a ram cavity. The blowout preventer also includes a pair of opposing rams disposed in the ram cavity and a shaft that extends through both rams of the pair of opposing rams. Additional systems, devices, and methods are also disclosed.
Claims20
An apparatus comprising:
- a blowout preventer including:
- a hollow body having a bore and a ram cavity;
- a pair of opposing rams disposed in the ram cavity;
- and
- a shaft that extends through both rams of the pair of opposing rams.
2 more elements
An apparatus comprising:
- a hollow body having a bore;
- and
- a ram assembly including:
- a ram disposed within a ram cavity of the hollow body such that the ram can be moved within the ram cavity along an axis from an open position to a closed position to selectively impede flow of a fluid through the bore of the hollow body;
- and
- an actuation shaft coupled to the ram;
- wherein the ram assembly is pressure-balanced in that, as the ram is moved toward the closed position during operation and is exposed to the fluid, the fluid surrounds a front end and a rear end of the ram and the pressure of the fluid does not apply a net force on the ram or the actuation shaft along the axis.
4 more elements
A method comprising:
- receiving a pressurized fluid in a bore of a blowout preventer;
- and
- closing a ram of the blowout preventer, wherein closing the ram of the blowout preventer includes moving the ram by moving an actuation shaft that extends through opposite ends of the ram.
Dependencies are inferred from the claim text.