Patent ID: 8622126

Claim:
A reaming shoe for location in a bore, the shoe comprising a rotationally balanced nose; a rotary drive rotationally coupled to the reaming shoe to enable reaming of the bore, the rotary drive enabling rotation of the reaming shoe at speeds of at least 1,000 revolutions per minute, the reaming shoe coupled to a lowermost part of a bottom hole assembly; wherein the reaming shoe and rotary drive are configured to be coupled to a tubular component, and wherein the reaming shoe and rotary drive are mounted to the tubular component to enable rotation of the reaming shoe independently of the tubular component, such that the reaming shoe is rotatable at a different rotational speed than the tubular component; and wherein the reaming shoe is configured to be drilled through after being emplaced in the bore, the nose of the reaming shoe comprising an eccentric profile, the eccentric profile comprising at least one internal convex geometric feature to enable drilling the reaming shoe substantially without cutting through a side wall of the reaming shoe and without creating an unsupported end portion of the reaming shoe during drilling the reaming shoe.