Patent ID: 9175533
Filing Date: 2015-11-03
Classification: E21B

Abstract:
1. A slip ring for anchoring a downhole tool in a wellbore casing having an inner wall, said slip ring comprising: two or more slip segments integrally formed into said slip ring, wherein each slip segment has an outer surface; two or more grooves are on the slip ring and one groove is longitudinally positioned between said slip segments, wherein a first portion of said grooves define fracture channels such that said slip segments are frangiblely connected together and said slip segments will separate along said first portion of said grooves upon application of a predetermined primary radial force; and a plurality of generally circumferentially extending wickers upon each said outer surface wherein each wicker has a cutting edge; and wherein each slip segment has a longitudinally extending centerline; and wherein each slip segment and each wicker is configured such that, upon expansion of said slip ring in said casing, a contact point on said cutting edge and at or near said centerline will meet said casing before any portion of said cutting edge at or near said groove.