Wells – Means for guiding insertable element laterally of well axis – Secured in operative position by movable means engaging well...
Reexamination Certificate
2005-01-18
2005-01-18
Bagnell, David (Department: 3672)
Wells
Means for guiding insertable element laterally of well axis
Secured in operative position by movable means engaging well...
C166S212000, C175S081000
Reexamination Certificate
active
06843314
ABSTRACT:
A one-trip through tubing window milling system is disclosed. The whipstock is delivered with the mill and downhole motor in a downhole assembly which further includes MWD equipment for proper whipstock orientation. The entire assembly is run through tubing and the MWD equipment orients the whipstock. A motor lock prevents the downhole motor from turning as fluid pressure is applied to properly anchor the whipstock below the production tubing. The motor lock is defeated and the milling commenced using the downhole motor. At the conclusion of the window milling, the bottom hole assembly, including the mill, is removed and a retrieving tool releases the whipstock for retrieval through the production tubing.
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Merriam-Webster's Collegiate Dictionary 10th Edition, 1999, p. 1056, col. 1.
Pitman Malcolm D.
Toulouse Jeffrey E.
Bagnell David
Baker Hughes Incorporated
Halford B. D.
Rosenblatt Steve
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