Patent ID: 8733455

Claim:
A roller standoff assembly for facilitating disposing an interior tubular member radially within an exterior tubular member, the roller standoff assembly comprising a roller standoff device comprising: a roller cage to surround the interior tubular and having two cage halves that are pivotable between an open configuration wherein the roller cage may be placed around the interior tubular member and a closed configuration wherein the roller cage forms a closed annular ring; a roller supported by the roller cage to contact and roll upon an exterior tubular member; and a latch assembly for securing the roller cage in the closed position, the latch assembly comprising: a latch retainer; a latching pin that is moveable between a latched position and an unlatched position to selectively latch within the latch retainer; and a compressible spring biasing the latching pin toward the latched Position; a clamshell adaptor to permit the roller standoff device to rotate about a portion of the interior tubular member, the interior tublar member having a plurality of wrench flats that are adjoined to each other at corners, the clamshell adaptor comprising: an annular adaptor body which presents an inner radial surface that is shaped to engage the wrench flats so that the adaptor body does not rotate about the interior tubular member; an outer radial surface which defines a track upon which the roller standoff device can rotate; the inner radial surface of the adaptor body includes a plurality of engagement flats to matingly engage the wrench flats; and an opening between adjacent engagement flats, each said opening receiving therein one of said corners.