Blowout preventer with dual function rams
AssigneeSchlumberger Technology Corporation
InventorsPatrice Couren, Florent Vargas
Life of this patent
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Abstract
A dual function ram system for a blowout preventer (BOP) includes a first dual function ram that is configured to move within a cavity of the BOP between a withdrawn position to cause the BOP to be in an open configuration and an extended position to cause the BOP to be in a closed configuration. The first dual function ram includes a shearing surface that is configured to shear a tubular within a central bore during a shearing operation and a pipe-sealing surface that is configured to seal against the tubular within the central bore during a pipe-sealing operation.
Claims18
A dual function ram system for a blowout preventer (BOP), the dual function ram system comprising:
- a first dual function ram configured to move within a cavity of the BOP between a withdrawn position to cause the BOP to be in an open configuration and an extended position to cause the BOP to be in a closed configuration, wherein the first dual function ram comprises a shearing surface that is configured to shear a tubular within a central bore during a shearing operation and a pipe-sealing surface that is configured to seal against the tubular within the central bore during a pipe-sealing operation.
A blowout preventer (BOP), comprising:
- a housing defining a central bore;
- a cavity intersecting the central bore;
- and
- a first dual function ram supported within the cavity, wherein the first dual function ram is configured to move within the cavity along an axial axis between a withdrawn position to cause the BOP to be in an open configuration and an extended position to cause the BOP to be in a closed configuration, wherein the first dual function ram is configured to rotate within the cavity along a circumferential axis between a first position that enables a first surface of the first dual function ram to enter the central bore to carry out a first operation and a second position that enables a second surface of the first dual function ram to enter the central bore to carry out a second operation.
Dependencies are inferred from the claim text.