Patent ID: 8240372
Filing Date: 2012-08-14
Classification: E21B

Abstract:
1. A Casing Running Tool (CRT) apparatus usable with a top drive, having a swivel assembly to conduct fluid power from a stationary control to rotating parts of the CRT. The apparatus comprising: a) a casing running tool comprising swing arms, a single stand elevator, a pipe gripping assembly, and a fluid power conducting swivel situated on said CRT and arranged to said conduct fluid power between stationary and rotating fluid channels; b) a seal carrier situated in said swivel arranged to move channel seals out of contact with their seal related rubbing surfaces when no fluid is being conducted by said swivel when said pipe gripping assembly is prepared for rotation; and c) said channel seals mounted on a piston that is movable between first and second positions to move said seals into and out of contact with said seal related rubbing surfaces.