Patent ID: 7617880
Filing Date: 2009-11-17
Classification: E21B

Abstract:
1. An anchor assembly comprising: a mandrel having an upper end, a lower end, an outer wall surface, and a longitudinal bore disposed therethrough; an anchor setting sub-assembly disposed at the upper end of the mandrel and operatively associated with the mandrel along the outer wall surface of the mandrel, the anchor setting sub-assembly comprising a hydrostatic pressure actuatable anchor; an inflation sub-assembly disposed at the lower end of the mandrel and operatively associated with the mandrel along the outer wall surface of the mandrel, the inflation sub-assembly comprising a pump pressure actuatable valve having an opened position and a closed position, the opened position permitting fluid to flow through the bore of the mandrel; and an anchor release sub-assembly disposed between the anchor setting sub-assembly and the inflation sub-assembly and operatively associated with the anchor setting sub-assembly and the mandrel along the outer wall surface of the mandrel, the anchor release sub-assembly comprising a pump pressure actuatable mandrel release member,