System and method for anchoring an expandable tubular to a borehole wall

A system for anchoring an expandable tubular to a borehole wall, comprising:

• a support member having a first support end fixed relative to the outside of the tubular;
• and
• an anchor member having a first anchor end fixed relative to the outside of the 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 anchor member including at least one hinge between said first anchor end and said second anchor end, wherein the bending moment required to bend said anchor member at the hinge is less than the bending moment required to bend another portion of said anchor member;
• 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 L1 therebetween;
• wherein L1 is selected such that expansion of the portion of the expandable tubular between the first support member end and the first anchor member end causes the axial device length to shorten to L2, wherein the difference between L1 and L2 is sufficient to cause the second anchor member end to move radially outward and engage the borehole wall as a result of engagement with said ramp surface.