Wells – Means for guiding insertable element laterally of well axis – Secured in operative position by movable means engaging well...
Patent
1993-12-16
1995-06-27
Dang, Hoang C.
Wells
Means for guiding insertable element laterally of well axis
Secured in operative position by movable means engaging well...
175 81, 175 82, E21B 708
Patent
active
054271797
ABSTRACT:
A retrievable whipstock which can be hydraulically set within a wellbore and following the drilling procedure mechanically released and retrieved for future use. The whipstock includes a whip which directs a milling tool from the main well and a hydraulically actuated packer or anchor for setting the whipstock in the wellbore. The retrieval tool includes a nose piece to ensure proper orientation relative to the whipstock and a die collar to threadably engage the whip. An adapter on the retrieval tool wedges the whip away from the casing wall to ensure mating engagement between the retrieval tool and the whip. The whipstock is released through the application of tension through the retrieval tool allowing removal from the wellbore.
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Bailey Thomas F.
Campbell John E.
Moeller Larry F.
Dang Hoang C.
Smith International Inc.
Vargo Robert M.
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