Patent ID: 8522866

Claim:
A system for anchoring an expandable tubular to a borehole wall, comprising: a support member having a first end fixed relative to the outside of the expandable tubular; and an anchor member having a first anchor end fixed relative to the outside of the expandable tubular and a second anchor end extending toward the support member, said second anchor end being movable relative to the outside of the expandable tubular; said support member including a ramp surface that tapers in the direction of said anchor member; said first anchor end and said first support end defining an initial axial device length (L 1 ) therebetween; wherein the initial axial device length (L 1 ) is selected such that expansion of the portion of the expandable tubular between the first support end and the first anchor end causes the axial device length to shorten to a final axial device length (L 2 ), wherein the difference between the initial axial device length (L 1 ) and the final axial device length (L 2 ) is sufficient to cause the second anchor end to move radially outward and engage the borehole wall as a result of engagement with said ramp surface while the first anchor end remains fixed relative to the outside of the expandable tubular.