A system includes an actuator housing having a plurality of adapter lugs extending radially inward toward an axis, each adapter lug of the plurality of adapter lugs secured to the housing via a respective connector. The system also includes a bonnet having a plurality of bonnet lugs extending radially outward away from the axis, each bonnet lug of the plurality of bonnet lugs being separated by a respective space, the space being sized to permit axial movement of an adapter lug of the plurality of adapter lugs toward a lower flange arranged axially lower than the plurality of bonnet lugs.

An annular elastomeric packer for a blowout preventer includes a first insert including an upper flange extending between a radially inner end and a radially outer end, a lower flange extending between a radially inner end and a radially outer end, and a rib extending between the upper flange and the lower flange, wherein the rib includes a length extending between an upper end and a lower end of the rib, a second insert including an upper flange extending between a radially inner end and a radially outer end, a lower flange extending between a radially inner end and a radially outer end, and a rib extending between the upper flange and lower flange, wherein the rib includes a length extending between an upper end and a lower end of the rib, an elastomeric body coupled to the first insert and the second insert, and including an inner sealing surface.

A BOP booster assembly is provided for use with BOPs that utilize hydraulic actuators mounted in BOP end caps to open the BOP for replacement of the shearing members. The booster assembly has three main components comprising a booster housing, piston, and end plate. An extension in the booster housing is sufficiently long to position the booster hydraulic cylinder axially outside of the ends of the bonnet end caps of the BOP with respect to the wellbore. The booster piston is equal in diameter or larger than the operating piston of the BOP. The operating pistons and booster pistons move simultaneously, in sync, and the same distance for closing and cutting. In one embodiment, an internal hydraulic line is provided in the booster cylinder wall.

A BOP booster assembly is provided for use with BOPs that utilize hydraulic actuators mounted in BOP end caps to open the BOP for replacement of the shearing members. The booster assembly has three main components comprising a booster housing, piston, and end plate. An extension in the booster housing is sufficiently long to position the booster hydraulic cylinder axially outside of the ends of the bonnet end caps of the BOP with respect to the wellbore. The booster piston is equal in diameter or larger than the operating piston of the BOP. The operating pistons and booster pistons move simultaneously, in sync, and the same distance for closing and cutting. In one embodiment, an internal hydraulic line is provided in the booster cylinder wall.

A choke valve comprising: a body having an axial through hole and a radial entry port; a valve seat coaxially housed in the body axial through hole on a first side of the radial entry port; a pressure balanced valving member axially reciprocable within the body axial through hole between a first sealing position bearing against the valve seat and a second position spaced away from the seat; an actuator housing operably connected to the valving member; and a detachably connected reinforcement member detachably connected to the actuator housing and increasing the axial load that the actuator housing can take before failure of the actuator housing.

An annular blowout preventer includes a housing, an annular piston positioned within the housing, and an annular packer positioned within the housing. The annular blowout preventer also includes at least one radially-extending conduit disposed in the annular piston, the annular packer, or a plate positioned axially between the annular piston and the annular packer. The radially-extending conduit is configured to enable a fluid to flow from a central bore to an annular space between the annular packer and the housing when the annular blowout preventer is in a closed position.

An annular elastomeric packer for a blowout preventer includes a first insert including an upper flange extending between a radially inner end and a radially outer end, a lower flange extending between a radially inner end and a radially outer end, and a rib extending between the upper flange and the lower flange, wherein the rib includes a length extending between an upper end and a lower end of the rib, a second insert including an upper flange extending between a radially inner end and a radially outer end, a lower flange extending between a radially inner end and a radially outer end, and a rib extending between the upper flange and lower flange, wherein the rib includes a length extending between an upper end and a lower end of the rib, an elastomeric body coupled to the first insert and the second insert, and including an inner sealing surface.

A choke valve comprising: a body having an axial through hole and a radial entry port; a valve seat coaxially housed in the body axial through hole on a first side of the radial entry port; a pressure balanced valving member axially reciprocable within the body axial through hole between a first sealing position bearing against the valve seat and a second position spaced away from the seat; an actuator housing operably connected to the valving member; and a detachably connected reinforcement member detachably connected to the actuator housing and increasing the axial load that the actuator housing can take before failure of the actuator housing.

An annular blowout preventer includes a housing, an annular piston positioned within the housing, and an annular packer positioned within the housing. The annular blowout preventer also includes at least one radially-extending conduit disposed in the annular piston, the annular packer, or a plate positioned axially between the annular piston and the annular packer. The radially-extending conduit is configured to enable a fluid to flow from a central bore to an annular space between the annular packer and the housing when the annular blowout preventer is in a closed position.

A choke valve comprising: a body having an axial through hole and a radial entry port; a valve seat coaxially housed in the body axial through hole on a first side of the radial entry port; a pressure balanced valving member axially reciprocable within the body axial through hole between a first sealing position bearing against the valve seat and a second position spaced away from the seat; an actuator housing operably connected to the valving member; and a detachably connected reinforcement member detachably connected to the actuator housing and increasing the axial load that the actuator housing can take before failure of the actuator housing.