公开(公告)号：CA2873799C

公开(公告)日：2018-06-19

申请号：CA2873799

申请日：2009-11-17

Applicant: WEATHERFORD/LAMB INC

Inventor： TREVINO JOSE A ,  ODELL ALBERT C ,  TWARDOWSKI ERIC M ,  LE TUONG THANH ,  XU WEI JAKE ,  FEASEY GUY F

IPC: E21B19/06 ,  E21B7/20 ,  E21B17/07

Abstract: A method of forming a wellbore includes providing a drilling assembly comprising one or more lengths of casing and an axially retracting assembly having a first tubular; a second tubular at least partially disposed in the first tubular and axially fixed thereto; and a support member disposed in the second tubular and movable from a first axial position to a second axial position relative to the second tubular, wherein, in the first axial position, the support member maintains the second tubular axially fixed to the first tubular, and in the second axial position, allows the second tubular to move relative to the first tubular; and an earth removal member disposed below the axially retracting assembly. The method also includes rotating the earth removal member to form the wellbore; moving the support member to the second axial position; and reducing a length of the axially retracting assembly.

公开(公告)号：CA2837085C

公开(公告)日：2016-11-22

申请号：CA2837085

申请日：2012-05-25

Applicant: WEATHERFORD/LAMB INC

Inventor： TWARDOWSKI ERIC M

IPC: E21B31/20 ,  E21B17/02

Abstract: A coupling device includes an upper adapter and a lower adapter. The lower adapter may be pre-installed on a downhole tool and positioned in a wellbore. The upper adapter may be attached to a conveyance and lowered into the wellbore for connection with the lower adapter. The upper adapter may be coupled to the lower adapter by sliding over the lower adapter and applying weight to actuate a locking mechanism. After coupling, axial and torque load may be transmitted from the conveyance to the downhole tool.