Patent ID: 8061418
Filing Date: 2011-11-22
Classification: E21B,Y10T

Abstract:
1. A system to run a pipe string into a borehole, comprising: an elevator assembly having a plurality of elevator slips movably received along an interior wall of an elevator bowl; wherein the plurality of elevator slips are configured to move to a first engaged position with respect to the elevator bowl such that the plurality of elevator slips grip the pipe string at a first outer diameter thereof; wherein the plurality of elevator slips are configured to move to a second engaged position with respect to the elevator bowl such that the plurality of elevator slips grip the pipe string at a second outer diameter thereof, substantially different from the first diameter; and a spider assembly disposed beneath the elevator assembly, the spider assembly having a plurality of spider slips movably received along an interior wall of an spider bowl; wherein the plurality of spider slips are configured to move to a first engaged position with respect to the spider bowl such that the plurality of spider slips grip the pipe string at the first outer diameter thereof; and wherein the plurality of spider slips are configured to move to a second engaged position with respect to the spider bowl such that the plurality of spider slips grip the pipe string at the second outer diameter thereof.