The present invention relates to a system and method to be applied to multiple inflow and outflow control zones in an open-hole uncoupled completion. The invention can handle, for example, the complexities and limitations of hydraulic control found in carbonate reservoirs in the Brazilian Pre-Salt, which are characterized by high pressures and flows, large vertical extensions of the reservoir, high scaling potential, and high potential for losses during drilling and completion operations.

The present invention relates to a system and method to be applied to multiple inflow and outflow control zones in an open-hole uncoupled completion. The invention can handle, for example, the complexities and limitations of hydraulic control found in carbonate reservoirs in the Brazilian Pre-Salt, which are characterized by high pressures and flows, large vertical extensions of the reservoir, high scaling potential, and high potential for losses during drilling and completion operations.

Provided is an electrically surface-controlled subsurface safety valve (ESCSSV). The ESCSSV, in one example, includes an outer housing comprising a central bore extending axially through the housing that is configured to convey production fluids there through. The ESCSSV, in this embodiment, further includes a valve closure mechanism disposed proximate a downhole end of the central bore, and a bore flow management actuator disposed in the central bore and configured to move between a closed state and a flow state to engage or disengage the valve closure mechanism to determine a flow condition of the production fluids through the central bore. The ESCSSV, in this embodiment, additionally includes an electric valve assembly fluidically coupled to the bore flow management actuator and configured to select between a section pressure or the annulus pressure to control the bore flow management actuator and determine the flow condition of production fluids through the central bore.

Provided is an electrically surface-controlled subsurface safety valve (ESCSSV). The ESCSSV, in one example, includes an outer housing comprising a central bore extending axially through the housing that is configured to convey production fluids there through. The ESCSSV, in this embodiment, further includes a valve closure mechanism disposed proximate a downhole end of the central bore, and a bore flow management actuator disposed in the central bore and configured to move between a closed state and a flow state to engage or disengage the valve closure mechanism to determine a flow condition of the production fluids through the central bore. The ESCSSV, in this embodiment, additionally includes an electric valve assembly fluidically coupled to the bore flow management actuator and configured to select between a section pressure or the annulus pressure to control the bore flow management actuator and determine the flow condition of production fluids through the central bore.

Systems and processes for subsea marine managed pressure operations. One system includes a modified riser joint configured to fluidly connect inline with one or more riser joints. The modified riser joint and the one or more riser joints are connected to form a riser connecting a floating vessel with a wellhead. The system further includes a subsea pressure management sub-system configured to be operatively and fluidly connected to the modified riser joint at a subsea location.

A sub-plate mounted valve for installation in a sub-plate or manifold for controlling hydraulic systems, such as subsea blowout preventers. A spool (123) disposed within the valve is movable between an open position in which fluid flow is permitted from a supply port (108) of the manifold to a function port (106) of the manifold, and a closed position in which fluid flow is permitted between a return port (110) of the manifold and the function port (106). The spool (123) is moved between the open and the closed position by supplying pressurized fluid to a piston (126) disposed on the outside surface of the spool. One or more springs (130) may also act on the piston to bias the spool into the open or the closed position. To facilitate proper alignment of the valve within the manifold, the valve may be rotated within the manifold to align indicators (450, 452) corresponding to particular features of the manifold and the valve.

A sub-plate mounted valve for installation in a sub-plate or manifold for controlling hydraulic systems, such as subsea blowout preventers. A spool (123) disposed within the valve is movable between an open position in which fluid flow is permitted from a supply port (108) of the manifold to a function port (106) of the manifold, and a closed position in which fluid flow is permitted between a return port (110) of the manifold and the function port (106). The spool (123) is moved between the open and the closed position by supplying pressurized fluid to a piston (126) disposed on the outside surface of the spool. One or more springs (130) may also act on the piston to bias the spool into the open or the closed position. To facilitate proper alignment of the valve within the manifold, the valve may be rotated within the manifold to align indicators (450, 452) corresponding to particular features of the manifold and the valve.

A ball valve is provided. The ball valve includes a housing, a ball seat arranged in the housing, a ball member mounted within the housing and being rotatable relative to the ball seat between open and closed positions, the ball seat and ball member defining respective through bores, the ball member including a sealing surface, a bore surface and a leading edge surface extending between the sealing surface and the bore surface, the leading edge surface being configured to cut a body extending at least partially through the valve upon closure of the ball member, wherein said leading edge surface is truncated. The ball member may include a relief region proximate the leading edge surface.

A technique facilitates failsafe closure of a valve used in, for example, a subsea test tree. The technique utilizes a valve combined with a cutter oriented to sever well equipment passing through an interior passage of the valve. The valve is operatively coupled with an actuation system having an actuator piston which controls cutting and valve closure. The failsafe valve and the cutter are shifted to an open position by applying pressure in a control fluid chamber to shift the actuator piston. However, the actuator piston, and thus the valve and cutter, are biased toward a closed position via pressure applied in a pressure chamber and a gas precharge chamber. The combined pressure ensures adequate force for shearing of the well equipment and closure of the valve when hydraulic control pressure is lost. In some applications, additional closing force may be selectively provided to the actuator piston.

A valve includes a valve body defining a top end, a bottom end distal from the top end, and a shaft bore defined in the top end and the bottom end; a valve shaft positioned at least partially within the shaft bore of the valve body and defining an end bore; and a shaft blowout prevention fastener secured within the end bore of the valve shaft.