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.