A method for anchoring a casing string within a wellbore is disclosed. The method includes providing a casing string, where the casing string being generally tubular, and coupling a swellable elastomeric material on at least a portion of the exterior of the casing string. In addition, the method includes positioning the casing string within a wellbore, exposing the swellable elastomeric material to a swelling fluid, and sealing the swellable elastomeric material to the wellbore.