Patent ID: 9562406
Date: 2017-02-07
CPC Classifications: E21B

Claim:
1. A well service rig for tripping rods and tubulars, comprising: a service rig base unit; a mast coupled to the service rig base unit movable between a folded position and an upright position; a vertical guide mounted to the mast; and a traveling block coupled to the vertical guide at a first end and configured to travel up and down at least a portion of a length of the vertical guide, the traveling block coupleable to a rod, a tubular, or both at a second end, wherein a top end of the vertical guide is coupled with a top end of the mast forming an axis of rotation, and wherein the vertical guide comprises an extension bar rotatively coupling a bottom end of the vertical guide to the mast and provides a range of motion for the vertical guide with respect to the mast, the length of the extension bar defining a maximum offset between the vertical guide and the mast.