公开(公告)号：EP2278111A2

公开(公告)日：2011-01-26

申请号：EP10181151.1

申请日：2004-02-02

申请人： Weatherford/Lamb, Inc.

发明人： Giroux, Richard, L. ,  Galloway, Gregory, G. ,  Tuong, Thang, Le ,  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分类号： E21B7/20 ,  E21B7/18 ,  E21B7/08 ,  E21B33/14 ,  E21B21/10 ,  E21B41/00 ,  E21B47/01

CPC分类号： E21B7/18 ,  E21B7/06 ,  E21B7/065 ,  E21B7/208 ,  E21B10/61 ,  E21B10/62 ,  E21B21/103 ,  E21B33/14 ,  E21B41/0078 ,  E21B47/01 ,  E21B2034/002

摘要： 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.