Abstract: A gas separation and injection system includes a lower separator that receives and separates a production stream into higher and lower density streams, a turbine-compressor including a turbine that receives the lower density stream to rotate a shaft that drives a compressor and subsequently recombines the lower and higher density streams into a recombined production stream. An upper separator receives the recombined production stream and includes a gas inlet tube that conveys a gas stream to the compressor to produce a compressed gas stream. A shuttle valve assembly axially interposes the upper separator and the turbine-compressor and includes a mandrel assembly received within a body and having the gas inlet tube extending within the mandrel assembly, a valve seat secured to the gas inlet tube, a piston movably arranged within the inner annulus between closed and open positions, and a shuttle valve operatively coupled to the piston.

Abstract: A sliding sleeve well device has a first sliding sleeve received in a second sliding sleeve. A polymer seal having a polymer sealing surface is between and in sealing contact with the sliding sleeves. A metal-to-metal seal is between the sliding sleeves and actuable into sealing contact with the first and second sliding sleeves.

Abstract: Embodiments of an equalizing device for use with a safety valve and a safety valve are provided herein. In one embodiment, the equalizing device includes at least a tubular having a central bore extending axially there through, the tubular having a ball seat. The equalizing device may further include a ball positioned proximate the ball seat, the ball configured to move from a first position engaged with the ball seat to a second position disengaged from the ball seat to equalize pressure across the safety valve, and an arced ring positioned radially outside the ball, the arced ring configured to keep the ball engaged with the ball seat when in the first position and maintain the ball radially outside the ball seat when in the second position.

Abstract: Embodiments of an equalizing device for use with a safety valve and a safety valve are provided herein. In one embodiment, the equalizing device includes at least a tubular having a central bore extending axially there through, the tubular having a ball seat. The equalizing device may further include a ball positioned proximate the ball seat, the ball configured to move from a first position engaged with the ball seat to a second position disengaged from the ball seat to equalize pressure across the safety valve, and an arced ring positioned radially outside the ball, the arced ring configured to keep the ball engaged with the ball seat when in the first position and maintain the ball radially outside the ball seat when in the second position.

Abstract: A selective service tool has a key prop mandrel that is slidably coupled to and extends over a cage mandrel. The lower end of the key prop mandrel has key props that extend from its lower end. A key has first and second opposing sections located about an outer perimeter and adjacent an upper end of the locator mandrel, wherein the key props are slidable with respect to the key and are positionable between the first section and the outer perimeter of the locator mandrel and the second section and the outer perimeter of the locator mandrel, respectively, when the key is in a deployed position.

Abstract: This disclosure presents a selective service tool that has key prop mandrel that is slidably coupled to and extends over a cage mandrel. The lower end of the key prop mandrel including key props. The key has first and second opposing sections located about an outer perimeter and adjacent an upper end of the locator mandrel, wherein the key props are positionable between the first section and the outer perimeter of the locator mandrel and the second section and the outer perimeter of the locator mandrel, respectively, when the key is in a deployed position.

Abstract: A gas separation and injection system includes a lower separator that receives and separates a production stream into higher and lower density streams, a turbine-compressor including a turbine that receives the lower density stream to rotate a shaft that drives a compressor and subsequently recombines the lower and higher density streams into a recombined production stream. An upper separator receives the recombined production stream and includes a gas inlet tube that conveys a gas stream to the compressor to produce a compressed gas stream.

Abstract: An injection valve assembly for use in a well, where pressurized gas or fluid from uphole in the well displaces a perforated valve head from a valve seat, allows for fluid flow of the pressurized gas or fluid into the valve head and further downhole in the well toward an electric submersible pump. A compression spring is coiled around a valve stem connected to the valve head, pushing the valve stem and valve head in an uphole direction opposite to the force from pressurized gas or fluid. The compression spring is in a chamber filled with hydraulic fluid, where the hydraulic fluid can pass through a dampening system assembly and a flow restrictor assembly, thereby regulating the speed at which the valve stem and valve head can move relative to the valve seat.

Abstract: Method and systems for opening and closing a subsurface valve are disclosed. A rod piston forms a first piston chamber, a second piston chamber and a third piston chamber within a housing. The first piston chamber is fluidically coupled to a high tubing pressure and the second piston chamber is fluidically coupled to a surface control line and a first compartment of a storage chamber. The third piston chamber is coupled to a second compartment of the storage chamber. A flow tube couples the rod piston to a flapper. The rod piston is moved between a first position and a second position in response to a change in a pressure in at least one of the first piston chamber, the second piston chamber and the third piston chamber. The movement of the rod piston between the first position and the second position at least one of opens and closes the flapper.

Abstract: A steam injection mandrel comprises a housing generally defining an axial flow bore and comprising one or more ports, an inner mandrel disposed within the housing, and a slot formed in the inner mandrel. The slot transitions at least three hundred sixty degrees about the longitudinal axis of the housing, and the steam injection mandrel is configured to provide fluid communication between the axial flow bore and the one or more ports through the slot.

Abstract: An injection valve assembly for use in a well, where pressurized gas or fluid from uphole in the well displaces a perforated valve head from a valve seat, allows for fluid flow of the pressurized gas or fluid into the valve head and further downhole in the well toward an electric submersible pump. A compression spring is coiled around a valve stem connected to the valve head, pushing the valve stem and valve head in an uphole direction opposite to the force from pressurized gas or fluid. The compression spring is in a chamber filled with hydraulic fluid, where the hydraulic fluid can pass through a dampening system assembly and a flow restrictor assembly, thereby regulating the speed at which the valve stem and valve head can move relative to the valve seat.

Abstract: An injection valve assembly for use in a well, where pressurized gas or fluid from uphole in the well displaces a perforated valve head from a valve seat, allows for fluid flow of the pressurized gas or fluid into the valve head and further downhole in the well toward an electric submersible pump. A compression spring is coiled around a valve stem connected to the valve head, pushing the valve stem and valve head in an uphole direction opposite to the force from pressurized gas or fluid. The compression spring is in a chamber filled with hydraulic fluid, where the hydraulic fluid can pass through a dampening system assembly and a flow restrictor assembly, thereby regulating the speed at which the valve stem and valve head can move relative to the valve seat.

Abstract: Certain aspects and embodiments of the present invention are directed to a dual closure system disposed within a wellbore and capable of preventing the production of fluids from a fluid-producing formation to the surface. The dual closure system can include a passive closure mechanism and a subsurface safety valve coupled to an electric submersible pump positioned within a passageway defined by the tubing string. The passive closure mechanism and the subsurface safety valve can prevent production of fluid in the absence of the subsurface safety valve. The subsurface safety valve can be positioned within a passageway defined by a tubing string such that the subsurface safety valve can apply force to the passive closure mechanism. The force applied to the passive closure mechanism can maintain the passive closure mechanism in an open position, allowing movement of fluid to the surface in the presence of the active closure mechanism.

Abstract: An injection valve assembly for use in a well, where pressurized gas or fluid from uphole in the well displaces a perforated valve head from a valve seat, allows for fluid flow of the pressurized gas or fluid into the valve head and further downhole in the well toward an electric submersible pump. A compression spring is coiled around a valve stem connected to the valve head, pushing the valve stem and valve head in an uphole direction opposite to the force from pressurized gas or fluid. The compression spring is in a chamber filled with hydraulic fluid, where the hydraulic fluid can pass through a dampening system assembly and a flow restrictor assembly, thereby regulating the speed at which the valve stem and valve head can move relative to the valve seat.

Abstract: Method and systems for opening and closing a subsurface valve are disclosed. A rod piston forms a first piston chamber, a second piston chamber and a third piston chamber within a housing. The first piston chamber is fluidically coupled to a high tubing pressure and the second piston chamber is fluidically coupled to a surface control line and a first compartment of a storage chamber. The third piston chamber is coupled to a second compartment of the storage chamber. A flow tube couples the rod piston to a flapper. The rod piston is moved between a first position and a second position in response to a change in a pressure in at least one of the first piston chamber, the second piston chamber and the third piston chamber. The movement of the rod piston between the first position and the second position at least one of opens and closes the flapper.

Abstract: A steam injection mandrel comprises a housing generally defining an axial flow bore and comprising one or more ports, an inner mandrel disposed within the housing, and a slot formed in the inner mandrel. The slot transitions at least three hundred sixty degrees about the longitudinal axis of the housing, and the steam injection mandrel is configured to provide fluid communication between the axial flow bore and the one or more ports through the slot.

Abstract: Certain aspects are directed to downhole power delivery tools using hydrostatic pressure within the wellbore. In one aspect, a downhole power delivery tool is provided that can be disposed in a wellbore through a fluid-producing formation. The downhole power delivery tool includes a body defining an inlet proximate to a chamber in the body, an actuation mechanism in the body and adjacent to the inlet, and a piston proximate to the chamber. The actuation mechanism can allow communication of hydrostatic pressure via the inlet to the chamber from an annulus external to the body in response to an actuation force being applied to the actuation mechanism. The hydrostatic pressure communicated to the chamber applies a first force to the piston. The piston applies a second force to a rod movable relative to the body in response to the first force being applied to the piston.

Abstract: A sliding sleeve well device has a first sliding sleeve received in a second sliding sleeve. A polymer seal having a polymer sealing surface is between and in sealing contact with the sliding sleeves. A metal-to-metal seal is between the sliding sleeves and actuable into sealing contact with the first and second sliding sleeves.

Abstract: Certain aspects and embodiments of the present invention are directed to a subsurface safety valve that can be disposed in a wellbore that is through a fluid-producing formation. The subsurface safety valve can include a closure mechanism, a sleeve, and a control line. The closure mechanism can be positioned in a passageway defined by a tubing string. The closure mechanism can be configured to prevent a flow of fluid to a portion of the passageway that is closer to a surface of the wellbore than the closure mechanism. The sleeve can be positioned in the passageway adjacent to the closure mechanism. The control line can communicate pressure to a piston from a pressure source within an inner diameter of the tubing string, causing the piston to apply a force to the sleeve. The sleeve can open the closure mechanism in response to the force being applied to the sleeve.

Abstract: Presented are apparatus and methods for pump-through fluid loss control. In one embodiment, the fluid loss control device is positioned in a wellbore having a first and a second one-way valve therein. The first one-way valve is openable in response to a first, selected differential pressure acting upward across the first one-way valve. For example, fluid pumped from an ESP from below the device acts to open the first one-way valve. Fluid is flowed upward through the device through the first one-way valve while the second one-way valve is closed. The first one-way valve is closed by reducing the first differential pressure across the first one-way valve, for example, by turning off the ESP. The second one-way valve is opened in response to a second, selected differential pressure acting downward across the valve. Fluid is flowed downward through the second one-way valve while the first one-way valve is closed.