Spherical-annular blowout preventer having a plurality of pistons
AssigneeZp Interests, LLC
InventorsHernani G. DeOcampo, Dean Madell
Life of this patent
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Abstract
A blowout preventer includes a housing including interconnected cylinders formed therein, a main seal positioned within the housing, cylindrical sleeves removably placed within the interconnected cylinders, annular pistons and glands placed within the sleeves; and an energizing ring configured to be operated on by the annular pistons in order to operate the main seal. A blowout preventer may also include an upper gland assembly for isolating a void space within the housing from the interconnected cylinders.
Claims20
A blowout preventer, comprising:
- an upper housing comprising an inner ceiling with a cavity configured to accommodate a main seal;
- a lower housing comprising a plurality of internal fluidly interconnected cylinders;
- a plurality of annular pistons and glands configured to be placed within the plurality of internal fluidly interconnected cylinders;
- an energizing ring configured to be operated on by the annular pistons in order to operate the main seal, and disposed circumferentially within a void area of the lower housing;
- and
- an upper gland assembly configured to isolate the plurality of internal fluidly interconnected cylinders from the void area of the lower housing.
A blowout preventer, comprising:
- a housing comprising a plurality of fluidly interconnected cylinders formed therein;
- a main seal positioned within the housing;
- a plurality of cylindrical sleeves removably placed within the plurality of fluidly interconnected cylinders;
- a plurality of annular pistons and glands configured to be placed within the plurality of cylindrical sleeves;
- and
- an energizing ring configured to be operated on by the annular pistons in order to operate the main seal.
A piston cartridge configured to be used in a blowout preventer, comprising:
- a cylindrical sleeve forming the outer wall of the piston cartridge;
- an annular piston placed within the cylindrical sleeve;
- and
- a gland retained on a distal portion of the piston cartridge,
- wherein the annular piston comprises a hole configured to receive a piston rod.
A method of using a blowout preventer, comprising:
- providing a piston cartridge, comprising a cylindrical sleeve, an annular piston, and a gland, into a cavity formed within the blowout preventer;
- connecting a piston rod of the blowout preventer to a hole formed within the annular piston of the piston cartridge;
- and
- covering the cavity of the blowout preventer using a bottom cover plate.
Dependencies are inferred from the claim text.