Boring or penetrating the earth – Processes – Boring curved or redirected bores
Reexamination Certificate
2006-01-31
2006-01-31
Neuder, William (Department: 3672)
Boring or penetrating the earth
Processes
Boring curved or redirected bores
C175S080000, C166S050000, C166S117600, C166S313000
Reexamination Certificate
active
06991048
ABSTRACT:
In accordance with one embodiment of the present invention, a method for drilling wellbores includes drilling a main wellbore, disposing a casing string having a deflecting member at a lower end thereof in the main wellbore, disposing a drill string having a drill bit at a lower end thereof in the casing string, and drilling, with the drill bit, a first lateral wellbore at a first depth in the main wellbore. The method further includes transferring the casing string to a second depth in the main wellbore that is less than the first depth, disposing a first temporary plug in the main wellbore at the second depth to prevent gas from flowing up the main wellbore past the second depth, transferring the casing string to a third depth in the main wellbore that is less than the second depth, and drilling, with the drill bit, a second lateral wellbore at the third depth.
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CDX Gas, LLC
Neuder William
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