Halliburton Energy Services, Inc.

Frank David Kalb

Andrew John Webber

Luke William Holderman

Jean-Marc Lopez

Brad Richard Pickle

James Dan Vick, Jr

Jimmie R Williamson, Jr

Adam Evan Beck

Liam Andrew Aitken

Joseph Steven Grieco

James Crabb

Jeffrey Wythe Huggins

William James Goodall

A composite wellbore ball valve has a spherical, fiber reinforced composite ball valve closure. The closure has an interior, central through-bore and an annular metallic sealing surface. A ball carrying assembly has an annular, metallic sealing seat surface adapted to contact and form a metal-to-metal seal with the metallic sealing surface of the ball valve closure when the ball valve closure is closed.

Composite wellbore ball valve

A wellbore ball valve includes a ball-type valve closure having an interior, central bore. A lower ball carrying assembly defines a first annular, sealing seat surface in contact with and adapted to seal with the exterior of the valve closure. The first seat surface defines a first through hole. An upper assembly defines a second annular seat surface in contact with the exterior of the valve closure. The second seat surface defines a second through hole. The second through hole is shaped differently from the first through hole in that it at least partially overlaps with the central bore while the first through hole is sealed from the central bore.

Debris anti-compaction system for ball valves

Disclosed are systems and methods for mechanically reclosing a hydraulically actuated sliding side door of a sleeve assembly. One sleeve assembly includes a housing defining one or more flow ports, a sliding sleeve arranged within the housing and movable between a closed position and an open position and back to the closed position, wherein, when in the closed position, the outer sleeve occludes the one or more flow ports, and, when in the open position, the one or more flow ports are exposed. A piston is movably arranged within a piston bore defined in the housing, and a locking mechanism is arranged within the piston bore and configured to engage the piston with the sliding sleeve, thereby allowing the piston to move the sliding sleeve to the open position.

Systems and methods for reclosing a sliding side door

A flow control assembly can be mechanically adjusted, rotationally or translationally, inside a tubing downhole between multiple positions by an intervening tool from the surface to change resistivity to flow through the flow control assembly. The positions among which the flow control assembly can be adjusted can include a closed position, a fully open position, and positions at which fluid experiences various resistances prior to flowing to an inner area of the tubing.

Mechanically adjustable flow control assembly

A downhole valve for use in a well has a closure device that is biased closed to seal against flow through the central bore of the valve. A plurality of pistons are each coupled to a respective hydraulic control line into the valve. Each piston is adapted to reside in an actuated position, supporting the closure open, when at least a specified hydraulic pressure is supplied through its control line, and to reside in an unactuated position, not supporting the closure open, when at least the specified hydraulic pressure is not present in its control line. The valve has a chamber containing a hydraulic fluid hydraulically coupling the pistons to support any piston not receiving the specified hydraulic pressure in an unactuated position. In certain aspects, when the piston is in the unactuated position, it seals against communication of fluid with its respective control line using a static-type seal.

Independent dual actuated subsurface safety valve

A well tool with a housing has an actuator sleeve in the housing. The actuator sleeve has an internal shifting tool engaging profile. An actuator is in the housing. The actuator is responsive to a remote signal to move the actuator sleeve from a first position to a second position. A dog is in the housing, supported to couple the actuator sleeve to the actuator when the actuator sleeve is in the first position and unsupported to allow the actuator sleeve to uncouple from the actuator when the actuator sleeve is in the second position.

Decoupling a remote actuator of a well tool

A ball valve comprises a housing, a first seat surface, a second seat surface, and a ball rotatably movable within the housing. The ball contacts at least one of the first seat surface and the second seat surface to form a seal within the ball valve. The first seat surface and the second seat surface are fixed relative to each other, and pressure acting in a first direction and in a second direction opposite the first direction increases the contact pressure of the first seat surface and the second seat surface with the ball.

Load balancing spherical diameter single seat ball system

A safety valve with a flapper/flow tube friction reducer. A safety valve for use in a subterranean well includes a closure assembly, an operating member which engages the closure assembly, and at least one of the closure assembly and the operating member including a friction reducing device which provides rolling contact between the closure assembly and the operating member. Another safety valve includes a flapper which rotates about a pivot relative to a seat, a flow tube which engages the flapper to rotate the flapper, and a friction reducing device which with rolling contact biases the flow tube toward the pivot when the flow tube engages the flapper. Yet another safety valve is described in which at least one of the flapper, the seat and the flow tube has a friction reducing device attached thereto which provides rolling contact between the flapper and the flow tube, or between the flow tube and the seat.

Growing community of inventors

Lantana, TX, United States of America

Frank David Kalb