E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 7/06 (2006.01) E21B 7/20 (2006.01) E21B 21/10 (2006.01) E21B 33/14 (2006.01) E21B 41/00 (2006.01)
Patent
CA 2725717
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.
Alkhatib Samir
Beasley William M.
Brunnert David J.
Galloway Gregory G.
Giroux Richard L.
Deeth Williams Wall Llp
Weatherford/lamb Inc.
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