Abstract: A shear valve utilizing an elastically responsive unibody seal member in operation. The unibody seal member is of unitary constriction and in terms of adjacent ends thereof and an energizing member disposed therebetween. Thus, governing of fluid flow through the metal valve may be achieved without undue concern over high pressure differentials, for example in a downhole environment. Further, the unitary construction of the seal member alleviates concern over mismatching tolerances and/or dimensions for separately assembled miniaturized components of the valve.

Abstract: A technique facilitates controlling fluid flows, such as fluid flows in a downhole well zone or zones. A flow control valve is employed to control a fluid flow and is operationally linked with an injection valve. Actuation of the flow control valve is used to automatically actuate the injection valve between corresponding positions allowing or blocking fluid injection. Closing or opening of the flow control valve thus results in a desired corresponding action of the injection valve, such as blocking flow or allowing flow through the injection valve.

Abstract: A self-seeking plug for deployment in a hydraulic line with a leak therein. The plug is configured for circulation through the line and to a resting location adjacently below or past the location of the leak in the line. As a result, the location of the leak may be identified, for example with reference to a tether running between the resting location and the site of deployment. Thus, line repair may more readily ensue. Additionally, and/or alternatively, sealing repair may ensue by way of sealing element(s) outfitted on the plug. Such may or may not be accompanied by an exposable bypass channel through the plug for sake of full hydraulic restoration of the line.

Abstract: A shear valve utilizing an elastically responsive unibody seal member in operation. The unibody seal member is of unitary constriction and in terms of adjacent ends thereof and an energizing member disposed therebetween. Thus, governing of fluid flow through the metal valve may be achieved without undue concern over high pressure differentials, for example in a downhole environment. Further, the unitary construction of the seal member alleviates concern over mismatching tolerances and/or dimensions for separately assembled miniaturized components of the valve.

Abstract: A technique facilitates controlling fluid flows, such as fluid flows in a downhole well zone or zones. A flow control valve is employed to control a fluid flow and is operationally linked with an injection valve. Actuation of the flow control valve is used to automatically actuate the injection valve between corresponding positions allowing or blocking fluid injection. Closing or opening of the flow control valve thus results in a desired corresponding action of the injection valve, such as blocking flow or allowing flow through the injection valve.

Abstract: An apparatus that is usable with a well includes an operator and a generator. The operator is disposed in the well and configured to respond to a differential pressure between hydraulically isolated zones of the well to produce mechanical motion. The generator is disposed in the well to convert the mechanical motion into electricity. A method that is usable with a well is provided including maintaining hydraulic isolation between a first and second zone of a well. While maintaining the hydraulic isolation, the method further includes producing a mechanical motion in response to a differential pressure between the first and second zones and generating electricity in response to the mechanical motion.

Abstract: An apparatus that is usable with a well includes an operator and a generator. The operator is disposed in the well and configured to respond to a differential pressure between hydraulically isolated zones of the well to produce mechanical motion. The generator is disposed in the well to convert the mechanical motion into electricity. A method that is usable with a well is provided including maintaining hydraulic isolation between a first and second zone of a well. While maintaining the hydraulic isolation, the method further includes producing a mechanical motion in response to a differential pressure between the first and second zones and generating electricity in response to the mechanical motion.

Abstract: A hydraulic actuator is connected between a downhole tool and a hydraulic control line for operating the downhole tool through an actuation sequence. The hydraulic actuator comprises a valve shuttle section having an inlet port in connection with the hydraulic control line, a first function port and a second function port. The hydraulic actuator also has a shuttle movable between positions providing fluid communication between the inlet port and the first function port and the inlet port and the second function port. Additionally, the hydraulic actuator has a pilot assembly in fluid connection with the hydraulic control line and in operational connection with the shuttle. The pilot assembly is movable in response to an actuation cycle comprising applying pressure from the hydraulic control line and bleeding the pressure off.

Abstract: A choke that is usable with a well includes an inlet port and an outlet port. The choke also includes pressure drop stages between the inlet port and the outlet port. Each of the pressure drop stages is adapted to create part of an overall pressure differential between the inlet and outlet ports.

Abstract: A rechargeable hydraulic accumulator is provided in a wellbore, and a component is actuated by discharging the hydraulic accumulator. The hydraulic accumulator is recharged by increasing pressure in a fluid conduit.

Abstract: Disclosed herein are apparatuses and methods for packing off or choking a radial flow port through a tubular. In some embodiments, the apparatuses and methods comprise a support element and a polymeric element surrounding the support element. The polymeric element closes or chokes the radial flow port when contacted with the tubular.

Abstract: A hydraulic actuator connected between a downhole tool and a hydraulic control line for operating the downhole tool through an actuation sequence includes a valve shuttle section having an inlet port in connection with the hydraulic control line, a first function port and a second function port, and a shuttle moveable between positions providing fluid communication between the inlet port and the first function port and the inlet port and the second function port; and a pilot assembly in fluid connection with the hydraulic control line and in operational connection with the shuttle, the pilot assembly movable in response to an actuation cycle comprising applying pressure from the hydraulic control line and bleeding the pressure off.

Abstract: A rechargeable hydraulic accumulator is provided in a wellbore, and a component is actuated by discharging the hydraulic accumulator. The hydraulic accumulator is recharged by increasing pressure in a fluid conduit.

Abstract: A choke that is usable with a well includes an inlet port and an outlet port. The choke also includes pressure drop stages between the inlet port and the outlet port. Each of the pressure drop stages is adapted to create part of an overall pressure differential between the inlet and outlet ports.

Abstract: An apparatus for use in a well includes a mandrel, a flow control device provided on the mandrel, and an isolation element provided on the mandrel to provide isolation between zones of the well.