A steam operated flow control device and method is disclosed. In one mode, the flow control device enables steam to be injected into a subterranean formation region containing hydrocarbons. In another mode, the flow control device enables the hydrocarbons to be produced from the subterranean formation to the surface. The flow control device includes a piston disposed between a housing and a mandrel having aligned ports, which slides between a first position where one set of ports align with the ports in the housing and the mandrel and a second position where another set of smaller ports align with the ports in the housing and mandrel. The piston is operated by a bellows having a chamber which contains a fluid. The fluid responds to temperature and/or pressure variations.

A flow control valve configured to be positioned in a tubing in a borehole formed in a subsurface formation, wherein the flow control is used to regulate a flow of an injection fluid into the subsurface formation based on a vapor-transition characteristic of a fluid contained within a chamber of the flow control valve.

A body defines a central flow passage. A check valve is located within the central flow passage. The check valve is supported by the body. The check valve is arranged such that a fluid flow travels in a downhole direction during operation of the float collar. An auxiliary flow passage is substantially parallel to the central flow passage and is defined by the body. The auxiliary flow passage includes an inlet upstream of the check valve and an outlet at a downhole end of the float collar. A rupture disk seals the inlet of the auxiliary flow passage. The rupture disk is configured to burst at a specified pressure differential.

Apparatuses and methods for pressure regulating check valve assemblies are described. In an example, the check valve assembly comprises a housing defining a fluid passage having a fluid inlet side and a fluid outlet side. A lift check valve positioned within the fluid passage oriented to restrict fluid flow from the fluid inlet side and a second check valve positioned within the fluid passage oriented to restrict fluid flow from the fluid outlet side. A flow dampener is positioned within the fluid passage and between the first and second check valves.

A body defines a central flow passage. A check valve is located within the central flow passage. The check valve is supported by the body. The check valve is arranged such that a fluid flow travels in a downhole direction during operation of the float collar. An auxiliary flow passage is substantially parallel to the central flow passage and is defined by the body. The auxiliary flow passage includes an inlet upstream of the check valve and an outlet at a downhole end of the float collar. A rupture disk seals the inlet of the auxiliary flow passage. The rupture disk is configured to burst at a specified pressure differential.

High pressure gas lift valve with dual edge welded bellow subassembly where two bellows are incorporated in sealed configuration filled with silicone oil. Bellows are of different sizes featuring equal volumetric oil displacement for the pre-set total compression/expansion which corresponds to equal stem travel. By design both bellows can be fully compressed solid preventing bellows overstressing allowing extremely high pressure to be applied to both bellows. Lower bellow effective area is larger for orifice area than upper bellow area. This eliminates differential pressure across the bellows during valve opening resulting in equalized internal/external bellow stresses. Both bellows work only in compression from free length to full compression. This results in bellow internal/external pressure and stress level equalization and long cycle life. Valve withstands high injection pressure for well integrity testing. Once lower bellow is fully compressed solid high pressure would not be transmitted to upper bellow and vice versa.

A technique facilitates control over at least one flow control assembly position to control fluid with respect to a tubing string. The flow control assembly is disposed along the tubing string and comprises a flow control valve and a motor to control the operational position of the flow control valve. The flow control valve may comprise a plunger and a seal system to provide a seal between the plunger and a surrounding structure. Additionally, the flow control valve comprises a pressure balanced system. The pressure balanced system serves to balance pressure acting on the plunger such that the motor is able to move the plunger by simply overcoming friction of the seal system without overcoming a pressure differential otherwise acting on the plunger.

A resilient seal includes an annular body portion and a seating surface defined by the annular body portion and configured to interface with a seat of a subsurface safety valve. The resilient seal further includes a plurality of sealing surfaces defined by the annular body portion. Each sealing surface of the plurality of sealing surfaces is positioned to interface with a flapper of the subsurface safety valve in a closed position of the flapper of the subsurface safety valve. Additionally, the resilient seal includes at least one annular channel defined by the annular body portion between adjacent sealing surfaces of the plurality of sealing surfaces.

A flapper and seat assembly, and systems and methods utilizing such assembly, are disclosed. The flapper and seat assembly includes a tubular metallic seat having a bore therethrough. The tubular metallic seat is one solid unit. The flapper and seat assembly further includes a hinge coupled to the tubular metallic seat and a flapper. The flapper is pivotally mounted to the hinge such that it is rotatable between an open position and a closed position. The flapper and seat assembly also includes a secondary sealing element located between the flapper and the tubular metallic seat. The secondary sealing element is one of an undulating or curved lip seal. The flapper and seat assembly further includes a seal that is formed between a sealing surface of the flapper and a sealing surface of the tubular metallic seat. The seal comprises an angle measured from a plane perpendicular to the centerline of the flapper and seat assembly.

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.