E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
255/7
E21B 7/08 (2006.01) E21B 7/06 (2006.01) E21B 23/02 (2006.01) E21B 47/024 (2006.01)
Patent
CA 1182442
METHOD AND TITLE: APPARATUS FOR SETTING AND ORIENTING A WHIPSTOCK IN A WELL CONDUIT ABSTRACT OF THE INVENTION 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 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 n 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 utilizing a com- pass. 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.
382058
Baker John R.
Curington Alfred R.
Holland Arvin E.
Wright Douglas C.
Baker International Corporation
Borden Ladner Gervais Llp
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