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US 12,000,230 B2Granted
Annular blowout preventer
AssigneeSchlumberger Technology Corporation
InventorNicolas Arteaga
Life of this patent
Estimating the term…
Abstract
A packer assembly for an annular blowout preventer (BOP) includes an elastomeric sealing packer and multiple inserts that support the elastomeric sealing packer. Each insert of the multiple inserts includes an upper member and an intermediate member that are rotatably coupled to one another. For example, the upper member and the intermediate member are rotatably coupled to one another via a pin.
Claims17
A packer assembly for an annular blowout preventer (BOP), the packer assembly comprising:
- an elastomeric sealing packer including an inner surface defining a bore through the elastomeric sealing packer, wherein the bore extends along an axial axis;
- and
- a plurality of inserts that support the elastomeric sealing packer and are moveable to compress the elastomeric sealing packer to seal the bore, wherein each insert of the plurality of inserts comprises:
- an intermediate member that comprises a first end and a second end;
- an upper member rotatably coupled to the first end, wherein the upper member is rotatable relative to the intermediate member about a first axis that is parallel to the axial axis from a first radially retracted position to a first radially extended position;
- and
- a lower member rotatably coupled to the second end, wherein the lower member is rotatable relative to the intermediate member about a second axis that is parallel to the axial axis from a second radially retracted position to a second radially extended position, and wherein the first axis is parallel to the second axis.
4 more elements
An annular blowout preventer (BOP), comprising:
- a housing;
- a piston positioned within the housing moveable from a first position to a second position along an axial axis;
- and
- a packer assembly positioned within the housing, wherein the packer assembly comprises:
- a packer;
- and
- a plurality of inserts that support the packer and compress the packer as the piston moves from the first position to the second position, each insert of the plurality of inserts comprising:
- an intermediate member that comprises a first end and a second end;
- a first member rotatably coupled to the first end, wherein the first member is rotatable relative to the intermediate member about a first axis that is parallel to the axial axis from a first radially retracted position to a first radially extended position;
- and
- a second member rotatably coupled to the second end, wherein the second member is rotatable relative to the intermediate member about a second axis that is parallel to the axial axis from a second radially retracted position to a second radially extended position, and wherein the second axis is parallel to the first axis.
8 more elements
A method of operating an annular blowout preventer (BOP), the method comprising:
- adjusting a position of a piston of the annular BOP along an axial axis to exert a force on a packer assembly of the annular BOP, the packer assembly comprising an insert that comprises a packer, an intermediate member, an upper member coupled to the intermediate member by a first pin, and a lower member coupled to the intermediate member by a second pin;
- and
- rotating the upper member relative to the intermediate member about a first central axis of the first pin in response to the force on the packer assembly to thereby compress the packer, wherein the first central axis is parallel to the axial axis;
- and
- rotating the lower member of the insert relative to the intermediate member about a second central axis of the second pin in response to the force on the packer assembly to thereby compress the packer, wherein the second central axis is parallel to the first central axis.
2 more elements
Dependencies are inferred from the claim text.