Wells – Means for guiding insertable element laterally of well axis
Patent
1998-06-15
1999-08-31
Neuder, William
Wells
Means for guiding insertable element laterally of well axis
166 557, E21B 2906
Patent
active
059441011
ABSTRACT:
An apparatus for milling a window in a well tubular, e.g. a well casing, which is comprised of a whipstock and a cooperating mill. The mill has a nose portion depending from the bottom thereof and has cutting surfaces on both the bottom and the sides. The whipstock is comprised of a body which, in turn, has a tapered surface along at least a portion of its length. A guide, e.g. cylindrical pipe, is mounted on and is spaced from the tapered surface and is adapted to receive the nose portion on the mill to provide a guide path for the mill as it cuts or mills a window in the well casing. The guide is positioned so as to direct the side cutting surface of the mill into contact with the casing without contacting the tapered surface of the whipstock.
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Atlantic Richfield Company
Faulconer Drude
Neuder William
Walker Zakiya
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