Wells – Processes – Cementing – plugging or consolidating
Reexamination Certificate
2007-10-31
2011-11-29
Dang, Hoang (Department: 3672)
Wells
Processes
Cementing, plugging or consolidating
C166S177400, C175S057000, C175S324000
Reexamination Certificate
active
08066069
ABSTRACT:
The present invention relates methods and apparatus for lining a wellbore. In one aspect, a drilling assembly having an earth removal member and a wellbore lining conduit is manipulated to advance into the earth. The drilling assembly includes a first fluid flow path and a second fluid flow path. Fluid is flowed through the first fluid flow path, and at least a portion of which may return through the second fluid flow path. In one embodiment, the drilling assembly is provided with a third fluid flow path. After drilling has been completed, wellbore lining conduit may be cemented in the wellbore.
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Brunnert David J.
Galloway Gregory G.
Giroux Richard L.
Haugen David M.
Le Tuong Thanh
Dang Hoang
Patterson & Sheridan LLP
Weatherford / Lamb, Inc.
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