Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate
2007-10-31
2010-11-02
Neuder, William P (Department: 3672)
Boring or penetrating the earth
Processes
Boring curved or redirected bores
C175S073000
Reexamination Certificate
active
07823660
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.
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Alkhatib Samir
Beasley William M.
Brunnert David J.
Galloway Gregory G.
Giroux Richard L.
Neuder William P
Patterson & Sheridan L.L.P.
Weatherford / Lamb, Inc.
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