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：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.

公开(公告)号：CA2777334C

公开(公告)日：2016-05-03

申请号：CA2777334

申请日：2012-05-23

Applicant: WEATHERFORD/LAMB INC

Inventor： SMITH RODDIE R ,  MACLURG MICHAEL JOHN ,  BIRNER WOLFGANG HORACE

IPC: E21B43/12 ,  E21B17/18

Abstract: 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.

公开(公告)号：CA2829591C

公开(公告)日：2018-02-20

申请号：CA2829591

申请日：2013-10-09

Applicant: WEATHERFORD/LAMB INC

Inventor： SMITH RODDIE R

IPC: E21B33/10 ,  F16J15/16

Abstract: 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.