公开(公告)号：CA2787570C

公开(公告)日：2017-02-28

申请号：CA2787570

申请日：2012-08-22

Applicant: WEATHERFORD/LAMB INC

Inventor： LE TUONG THANH ,  ROSSING MICHAEL DEAN

IPC: E21B28/00 ,  E21B19/08 ,  E21B23/14

Abstract: A pulsing tool for use with a tubular string having a motor unit and a pulsing unit coupled to the motor unit. In one embodiment, the pulsing unit includes a mandrel having an inlet opening and an outlet opening and a flow control bushing, wherein rotation of the mandrel relative to the flow control bushing creates a pressure oscillation which causes movement of the tubular string.

公开(公告)号：CA2808302C

公开(公告)日：2017-05-23

申请号：CA2808302

申请日：2004-02-02

Applicant: WEATHERFORD/LAMB INC

Inventor： GIROUX RICHARD L ,  GALLOWAY GREGORY G ,  LE TUONG THANH ,  JACKSON RAYMOND H ,  NAZZAL GREGORY R ,  SWARR JAMES C ,  BRUNNERT DAVID J ,  BEASLEY WILLIAM M ,  LIRETTE BRENT J ,  ODELL ALBERT C ,  TERRY JIM ,  MCKAY DAVID ,  ALKHATIB SAMIR ,  WARDLEY MIKE

IPC: E21B7/06 ,  E21B7/08 ,  E21B7/18 ,  E21B7/20 ,  E21B21/10 ,  E21B33/14 ,  E21B34/00 ,  E21B41/00 ,  E21B47/01

Abstract: Apparatus and methods for drilling with casing. In an embodiment, methods and apparatus for deflecting casing using a diverter apparatus are disclosed. In another embodiment, the apparatus comprises a motor operating system disposed in a motor system housing, a shaft operatively connected to the motor operating system, the shaft having a passageway, and a divert assembly disposed to direct fluid flow selectively to the motor operating system and the passageway in the shaft. In another aspect, methods and apparatus for directionally drilling a casing into the formation are disclosed. Methods and apparatus for measuring the trajectory of a wellbore while directionally drilling a casing into the formation are also described.

公开(公告)号：CA2768010C

公开(公告)日：2016-09-20

申请号：CA2768010

申请日：2006-12-12

Applicant: WEATHERFORD/LAMB INC

Inventor： ODELL ALBERT C II ,  GIROUX RICHARD LEE ,  LE TUONG THANH ,  THOMPSON GARY ,  HEIDECKE KARSTEN ,  LORENZ JOERG ,  BOUTWELL DOYLE FREDERIC JR ,  HAYES MICHAEL ,  PIETRAS BERND-GEORG

IPC: E21B19/06

Abstract: Methods and apparatus for running tubulars into and out of a wellbore. A gripping apparatus is activated with an actuator having a primary actuator and a redundant safety feature. The redundant safety feature may include one or more redundant fluid operated pistons. The gripping apparatus may include an integrated safety system adapted to prevent damage to the tubulars while making and breaking out connections between the tubulars and the tubular string.

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.