Patent ID: 9689229
Date: 2017-06-27
CPC Classifications: E21B

Claim:
1. A system comprising: a casing hanger having external threads and external recesses positioned radially about an outer surface of the casing hanger; and a running tool having internal threads for engaging the external threads of the casing hanger, the running tool further including locking pins positioned within radial holes in the running tool and arranged to engage the external recesses and enable torque on the running tool to be applied to the casing hanger for synchronous rotation via engagement of the locking pins with the external recesses when the running tool is threaded onto the casing hanger, wherein the running tool and locking pins are further arranged to enable the locking pins to extend from the running tool into contact with the casing hanger as the running tool is threaded onto the casing hanger, and the system does not rely on a retention mechanism that prevents the locking pins from extending from the running tool into contact with the casing hanger as the running tool is threaded onto the casing hanger, such that, during threading of the running tool onto the casing hanger, the locking pins rotate about and in contact with the casing hanger as the running tool translates axially along the casing hanger and the locking pins automatically extend inwardly into the external recesses of the casing hanger when the axial translation of the running tool along the casing hanger brings the radial holes in which the locking pins are positioned into alignment with the external recesses.