Weatherford Technology Holdings, LLC

Weatherford/lamb, Inc.

Roddie R Smith

Christopher L Mcdowell

Thomas Floyd Bailey

Joe Noske

Paul L Smith

Christopher L McDowell

Frederick Thomas Tilton

Ronald R Williams

Michael John Maclurg

Wolfgang Birner

Robert Wojciechowski

Wolfgang Horace Birner

Ronald D Williams

A seal assembly for use in a tubular includes a mandrel, a compressible seal member disposed around the mandrel, a first piston assembly in contact with a first end of the seal member, and a second piston assembly in contact with a second end of the seal member. The first piston assembly includes a piston head, and a piston extension sealing member integrally formed with the piston head, and extending at least partially between the mandrel and the compressible seal member. The compressible seal member forms a seal with the tubular when at least one of the piston assemblies is urged toward the compressible seal member.

Seal assembly

A velocity string installation method comprises the steps of: removing an existing safety valve from a production tubing safety valve nipple; running a velocity string into the production tubing to engage the safety valve nipple; and then running a velocity string safety valve into the velocity string and coupling the safety valve with a port at the safety valve nipple.

Velocity strings

A method of operating an isolation valve in a wellbore includes: deploying a work string into the wellbore through a tubular string disposed in the wellbore. The work string comprises a deployment string, a shifting tool, and a bottomhole assembly (BHA). The tubular string comprises the isolation valve and an actuator. The method further includes rotating the actuator using the shifting tool, thereby opening or closing the isolation valve. The isolation valve isolates a formation from an upper portion of the wellbore in the closed position.

Remotely operated isolation valve

A method of drilling a wellbore includes drilling the wellbore through a formation by injecting drilling fluid through a drill string and rotating a drill bit. The drill string includes a shifting tool, a receiver in communication with the shifting tool, and the drill bit. The method further includes retrieving the drill string from the wellbore through a casing string until the shifting tool reaches an actuator. The casing string includes an isolation valve in an open position and the actuator. The method further includes sending a wireless instruction signal to the receiver. The shifting tool engages the actuator in response to the receiver receiving the instruction signal. The method further includes operating the actuator using the engaged shifting tool, thereby closing the isolation valve and isolating the formation from an upper portion of the wellbore.

Signal operated isolation valve

Concentric control lines have an outer line disposed about one or more inner lines. Encapsulated together, the lines only require one penetration through the wellhead to extend downhole. At the wellhead, the lines communicate with an operating system, which can provide hydraulics, electric power, signals, or the like for downhole components. Beyond the wellhead, the concentric lines extend along the tubing to a manifold. The outer line sealably terminates at the manifold's inlet, while the inner conduit passes out an outlet with a sealed fitting to connect to a downhole component. A downhole line couples to an outlet of the manifold and communicates internally with the outer conduit terminated at the manifold's inlet. This downhole line can then extend to the same downhole component or some different component.

Multiple control line assembly for downhole equipment

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Katy, United Kingdom

Roddie R Smith