Extrusion prevention ring for a liner hanger system

A method for coupling a liner to a casing string of a wellbore, comprising:

• coupling a liner hanger to a liner, the liner hanger including:
• an elongate body;
• a first groove in the elongate body;
• a seal member disposed about the elongate body;
• and
• a first extrusion prevention ring disposed about the elongate body and selectively deformable between a first configuration;
• wherein in the first configuration, the first extrusion prevention ring is movable along the length of the elongate body;
• wherein in the second configuration, the first extrusion prevention ring is received within the first groove and adjacent to the seal member to prevent movement of the seal member along the length of the elongate body;
• lowering the liner and the liner hanger into a wellbore through a casing string;
• and
• expanding the liner hanger such that the seal member is in contact with the casing string.

A system for performing subterranean operations, comprising:

• a liner hanger positioned within a casing string of a wellbore, the liner hanger including:
• an elongate body;
• a first groove in the elongate body;
• a seal member disposed about the elongate body;
• and
• a first extrusion prevention ring disposed about the elongate body and selectively deformable between a first configuration and a second configuration;
• wherein in the first configuration, the first extrusion prevention ring is movable along the length of the elongate body;
• wherein in the second configuration, the first extrusion prevention ring is received within the first groove and adjacent to the seal member to prevent movement of the seal member along the length of the elongate body;
• and
• a liner coupled to the liner hanger.