Patent ID: 9157289
Filing Date: 2015-10-13
Classification: E21B

Abstract:
1. In a hydrocarbon producing well having a length of well casing, a device restrains axial motion of a string of tubing within the length of well casing, the device comprising: a mandrel having an upper end, a lower end, and a plurality of axially oriented slip recesses spaced circumferentially about the mandrel, the slip recesses comprising a fixed slip recess and a live slip recess; a fixed slip attached within the fixed slip recess, and a live slip disposed within the live slip recess; the live slip recess comprising, with respect to the upper end and lower end of the mandrel, an upper end and a lower end, a first groove in the upper end and a second groove in the lower end, the first groove having a first width and the second groove having a second width, the live slip recess further comprising a cylindrical piston housing; the live slip comprising a top end and a bottom end, the top end comprising a first axially extending tab and the bottom end comprising a second axially extending tab, wherein the first axially extending tab is disposed within the first groove and the second axially extending tab is disposed within the second groove; and the first axially extending tab having a first thickness and the second axially extending tab having a second thickness wherein a range of travel of the live slip normal to a long axis of the mandrel is defined by the difference between the first width and the first thickness and the difference between the second width and the second thickness.