Patent ID: 7789137
Filing Date: 2010-09-07
Classification: E21B,Y10T

Abstract:
1. A downhole tool, comprising: a non-metallic mandrel; an element system disposed about the mandrel, wherein the element system comprises: a first non-metallic support ring comprising: an annular section; and a plurality of wedges detachable from the annular section under axial pressure on the first support ring; a first expansion ring, deformable to fill gaps formed between the wedges of the first support ring; a sealing member disposed with the first expansion ring a first non-metallic cone, disposed between the first expansion ring and one end of the sealing member wherein the first non metallic cone is formed of a polymeric composite reinforced by fibers in layers angled at about 30 to about 70 degrees relative to an axis of the cone, and wherein the polymeric composite comprises an epoxy.