Patent ID: 9163474
Filing Date: 2015-10-20
Classification: E21B

Abstract:
1. An isolation device for a borehole or subterranean tubular comprising: a mandrel; at least one packer cup having a run in position where its shape over an axial length comprises an annular cylinder about said mandrel, said packer cup thermally triggered to an operating position against the borehole or tubular when located at a predetermined location; opposed end rings, comprising a first and second end ring, wherein the said first end ring is fixedly mounted to said mandrel and further comprising an axially extending segment extending past a first end of said packer cup to retain said first end of said packer cup in said annular cylinder shape in said run in position, said first end of said packer cup moving axially away from said fixed axially extending segment in said operating position; and the said second end ring fixedly securing a second end of said at least one packer cup to said mandrel.