Electric/hydraulic safety valve
AssigneeHalliburton Energy Services, Inc.
InventorsJames Dan Vick, Jr., Bruce Edward Scott
Life of this patent
Estimating the term…
Abstract
Provided is an electro/hydraulic valve for use in a hydrocarbon production well, an electrically surface-controlled subsurface safety valve, and a method of operating an electrically surface-controlled subsurface safety valve. The electro/hydraulic valve for use in a hydrocarbon production well, in one aspect, includes a fluid chamber and an electro/mechanical pump having a fluid inlet and a fluid outlet, and further wherein an inlet check valve is positioned in fluid communication between the fluid chamber and the fluid inlet and an outlet check valve is positioned in fluid communication between the fluid outlet and a hydraulically controlled actuation member.
Claims21
An electro/hydraulic valve for use in a hydrocarbon production well, comprising:
- a fluid chamber, the fluid chamber configured to collect fluid leakage from a hydraulically controlled actuation member of a subsurface safety valve;
- and
- an electro/mechanical pump having a fluid inlet and a fluid outlet, and further wherein an inlet check valve is positioned in fluid communication between the fluid chamber and the fluid inlet and an outlet check valve is positioned in fluid communication between the fluid outlet and the hydraulically controlled actuation member.
An electrically surface-controlled subsurface safety valve, comprising:
- an outer housing comprising a central bore extending axially through the outer housing, the central bore operable to convey subsurface production fluids there through;
- a valve closure mechanism disposed proximate a downhole end of the central bore;
- a bore flow management actuator disposed in the central bore;
- a piston coupled to the bore flow management actuator, the piston operable to move the bore flow management actuator between a closed state and a flow state to engage or disengage the valve closure mechanism to determine a flow condition of the subsurface production fluids through the central bore;
- and
- an electro/hydraulic valve fluidly coupled to the piston for movement thereof, the electro/hydraulic valve including;
- a fluid chamber, the fluid chamber configured to collect fluid leakage from the piston;
- and
- an electro/mechanical pump having a fluid inlet and a fluid outlet, and further wherein an inlet check valve is positioned in fluid communication between the fluid chamber and the fluid inlet and an outlet check valve is positioned in fluid communication between the fluid outlet and the piston.
A method of operating an electrically surface-controlled subsurface safety valve, comprising:
- providing an electrically surface-controlled subsurface safety valve downhole within a wellbore, the electrically surface-controlled subsurface safety valve including;
- an outer housing comprising a central bore extending axially through the outer housing, the central bore operable to convey subsurface production fluids there through;
- a valve closure mechanism disposed proximate a downhole end of the central bore;
- a bore flow management actuator disposed in the central bore;
- a piston coupled to the bore flow management actuator, the piston operable to move the bore flow management actuator between a closed state and a flow state to engage or disengage the valve closure mechanism to determine a flow condition of the subsurface production fluids through the central bore;
- and
- an electro/hydraulic valve fluidly coupled to the piston for movement thereof, the electro/hydraulic valve including;
- a fluid chamber, the fluid chamber configured to collect fluid leakage from the piston;
- and
- an electro/mechanical pump having a fluid inlet and a fluid outlet, and further wherein an inlet check valve is positioned in fluid communication between the fluid chamber and the fluid inlet and an outlet check valve is positioned in fluid communication between the fluid outlet and the piston;
- and
- sending power to the electro/mechanical pump to axially urge the piston downhole to move the bore flow management actuator toward the flow state.
Dependencies are inferred from the claim text.