Wells – Combined
Patent
1980-07-21
1981-08-25
Novosad, Stephen J.
Wells
Combined
1661176, E21B 708, E21B 2300, E21B 47024
Patent
active
042853990
ABSTRACT:
The invention provides an improved method and apparatus for effecting the setting of a whipstock in a desired angularly oriented position in a well conduit solely by the use of a wire line but can be set on tubing or drill pipe, if desired. A packer is provided which can be expanded into sealed engagement with the casing at a desired location. The packer is provided with a key element, either a key or a key slot, and orienting elements by which a conventional well bore survey can provide an accurate indication of the angular alignment of the anchor key element. A whipstock anchor is provided incorporating a socket portion in which the whipstock may be rigidly secured and a shaft portion which is insertable within the bore of the packer and has a key element cooperating with the keyway, or key, provided in the packer. After setting of the packer in the well conduit, a survey is made to provide an accurate indication of the angular position of the packer keyway or key. The whipstock is assembled in the whipstock anchor socket and the socket is rotated relative to the shaft portion so that the arcuate face of the whipstock is positioned at a desired angular displacement from the angular position of the key element in the whipstock shaft. The whipstock shaft is then rigidly secured to the whipstock socket and the complete assembly is lowered into the well on drill pipe, or the like, and secured in the packer.
REFERENCES:
patent: 2131849 (1938-10-01), Tolson
patent: 2653007 (1953-09-01), Aston
patent: 2737248 (1956-03-01), Baker
patent: 3908759 (1975-09-01), Cagle et al.
patent: 4153109 (1979-05-01), Szescila
Baker John R.
Curington Alfred R.
Holland Arvin E.
Wright Douglas C.
Baker International Corporation
Norvell, Jr. William C.
Novosad Stephen J.
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