Patent ID: 8079416
Filing Date: 2011-12-20
Classification: E21B

Abstract:
1. A plug for insertion into a perforation in a liner or tubular, the plug comprising a base portion and one or more extendible portions, said base portion securable to and receivable within the perforation, said base portion and said one or more extendible portions sealing the perforation in said liner, said one or more extendible portions having a retracted position and an extended position such that when in said extended position said one or more extendible portions extend outwardly from said base portion and outwardly from the exterior surface of said liner; said plug including one or more shear pins retaining said extendible portions in said retracted position until sufficient force is applied to said extendible portions to shear said shear pins; said extendible portions entirely constructed from one or more materials to provide means for permitting the extendible portions to dissolve when exposed to an acid, or be pulverized or destroyed when subjected to a pre-determined level of sonic energy when subjected to the blast from the detonation of a charge, through drilling or through impact.