公开(公告)号：CA2811118C

公开(公告)日：2017-01-24

申请号：CA2811118

申请日：2011-09-20

Applicant: WEATHERFORD/LAMB INC

Inventor： NOSKE JOE ,  SMITH RODDIE R ,  SMITH PAUL L ,  BAILEY THOMAS F ,  MCDOWELL CHRISTOPHER L ,  TILTON FREDERICK T

IPC: E21B34/06 ,  E21B34/00

Abstract: 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.

公开(公告)号：CA2904445C

公开(公告)日：2017-09-12

申请号：CA2904445

申请日：2014-03-07

Applicant: WEATHERFORD/LAMB INC

Inventor： ZIMMERMAN PATRICK J ,  PARKER CHARLES D ,  DERBY MICHAEL C ,  GOODMAN BRANDON C ,  SMITH PAUL L ,  HARRALL SIMON J

IPC: E21B33/12

Abstract: A device and method to control the rate of radial expansion of a compressible sealing element on a packer over the longitudinal length of the sealing element. By varying the rate of compression of the element, the rate of radial expansion of the corresponding portions of the element may also be controlled. Additionally, the rate of radial expansion may also be controlled by controlling the direction and amount of radial expansion along the length of the sealing by reinforcing certain portions of the sealing element while decreasing the rigidity of the reinforcement for other portions.

公开(公告)号：CA2811117C

公开(公告)日：2017-03-07

申请号：CA2811117

申请日：2011-09-20

Applicant: WEATHERFORD/LAMB INC

Inventor： NOSKE JOE ,  SMITH RODDIE R ,  SMITH PAUL L ,  BAILEY THOMAS F ,  MCDOWELL CHRISTOPHER L

IPC: E21B34/06 ,  E21B33/16 ,  E21B34/00

Abstract: 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.