The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2004
Filed:
Aug. 23, 2002
Shane Hart, Houston, TX (US);
Mark Schnitker, Friendswood, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
The apparatus is a whipstock assembly for use in a wellbore to form a lateral wellbore therefrom. In one aspect, a whipstock is attached to a cutting tool by a shearable connection whereby the whipstock and cutting tool assembly may be run into the wellbore simultaneously. The shearable connection is designed to fail in compression while being able to withstand forces in tension brought about by the whipstock, accessories and extensions required to properly place the whipstock above a preset packer in the wellbore. The shearable connection means consists of two sets of shearable members, one set provides equal shear resistance in tension and in compression, another set provides shear resistance in tension, but not in compression. The resulting connection is stronger in tension than in compression and failure of the connection due to the weight of the whipstock assembly is less likely.