A mechanically actuated tubing drain for service with oil wells, water wells, gas wells and/or thermal wells has a configuration in which the drain opens by operation of a bumper member which may be pulled upwardly to move a sleeve member which is initially positioned adjacent to a drain port, thereby sealing the drain port. Once the bumper member pushes the sleeve member upwardly, any fluid in the tubing above the drain port will drain from the tubing. The bumper member may be pulled upwardly either by upward movement of a rod string or by operation of a wireline or slickline tool. The mechanically actuated drain does not require a tubing anchor to operate.

A mechanically actuated tubing drain for service with oil wells, water wells, gas wells and/or thermal wells has a configuration in which the drain opens by operation of a bumper member which may be pulled upwardly to move a sleeve member which is initially positioned adjacent to a drain port, thereby sealing the drain port. Once the bumper member pushes the sleeve member upwardly, any fluid in the tubing above the drain port will drain from the tubing. The bumper member may be pulled upwardly either by upward movement of a rod string or by operation of a wireline or slickline tool. The mechanically actuated drain does not require a tubing anchor to operate.

Zonal isolation devices, systems, and methods for use are provided. In some embodiments, the zonal isolation device comprises a tubular body having a fluid communication pathway formed along a longitudinal axis comprising: a sealing element comprising a deformable material and an inner bore forming at least a portion of the fluid communication pathway; a support ring disposed within the bore of the sealing element; a rotatable sealing component coupled to the support ring; a wedge engaged with a downhole end of the sealing element; and an anchoring assembly engaged with the wedge. In certain embodiments, the tubular body further comprises an end element adjacent the anchoring assembly.

Zonal isolation devices, systems, and methods for use are provided. In some embodiments, the zonal isolation device comprises a tubular body having a fluid communication pathway formed along a longitudinal axis comprising: a sealing element comprising a deformable material and an inner bore forming at least a portion of the fluid communication pathway; a support ring disposed within the bore of the sealing element; a rotatable sealing component coupled to the support ring; a wedge engaged with a downhole end of the sealing element; and an anchoring assembly engaged with the wedge. In certain embodiments, the tubular body further comprises an end element adjacent the anchoring assembly.

A valve housing has a first flapper moveable from an open position in the housing in which two-way flow is allowed to a closed position in which only one-way flow is permitted. A first collet sleeve is moveable from a first position to a second position in the valve housing. The first collet sleeve in the first position retains the flapper valve in the open position. The collet sleeve is moveable from a first position to a second position which allows the flapper to move to a closed position.

A valve housing has a first flapper moveable from an open position in the housing in which two-way flow is allowed to a closed position in which only one-way flow is permitted. A first collet sleeve is moveable from a first position to a second position in the valve housing. The first collet sleeve in the first position retains the flapper valve in the open position. The collet sleeve is moveable from a first position to a second position which allows the flapper to move to a closed position.

Methods and kits for assembling a flow cage assembly are provided. The flow cage assembly may be used in a traveling valve or a standing valve of a downhole pump. In some embodiments, the kit comprises a tubular body having an axial bore, a tubular insert, and a retaining element. The kit may be assembled such that the retaining element forms an interference fit with the tubular body and thereby retains the tubular insert within the axial bore. In some embodiments, the interference fit between the retaining element and the tubular body may reduce or eliminate a possible failure point within the flow cage assembly.

An isolation valve system, method, and apparatus are provided that can isolate a wellbore and prevent fluids from exiting the well and prevent seawater from entering the well. The system can be a two-part design in some embodiments where a shear sub is selectively interconnected to a body via shearing screws. A sufficient force on the shear sub destroys the shearing screws and the shear sub is removed from the body. This movement rotates an actuator on the body, which in turn rotates a valve in the body to provide the isolating function during routine operation of a wellbore or during an emergency.

An isolation valve system, method, and apparatus are provided that can isolate a wellbore and prevent fluids from exiting the well and prevent seawater from entering the well. The system can be a two-part design in some embodiments where a shear sub is selectively interconnected to a body via shearing screws. A sufficient force on the shear sub destroys the shearing screws and the shear sub is removed from the body. This movement rotates an actuator on the body, which in turn rotates a valve in the body to provide the isolating function during routine operation of a wellbore or during an emergency.

A flow control device including a housing having a flow port therein, the flow port including a first end and a second end, a first gate having a specific gravity greater than water disposed in the housing adjacent a first end of the port and movable between a position of nonobstruction of the first end of the port and a position of obstruction of the first end of the port; and a second gate disposed in the housing, the second gate having a specific gravity about the same as a specific gravity of formation water in a formation in which the device is intended to be employed, the second gate disposed to control flow at the second end of the port.