US 11,753,880 B2
Winch overload protection system
Michael Stephen Oser, Frisco, TX (US); Mickie James Theriot, Chauvin, LA (US); and Robert Alexander Lyons, Jr., Frisco, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Appl. No. 16/63,766
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
PCT Filed Mar. 3, 2017, PCT No. PCT/US2017/020616
§ 371(c)(1), (2) Date Jun. 19, 2018,
PCT Pub. No. WO2018/160190, PCT Pub. Date Sep. 7, 2018.
Prior Publication US 2021/0164302 A1, Jun. 3, 2021
Int. Cl. E21B 19/02 (2006.01); B66D 1/58 (2006.01); E21B 19/08 (2006.01)
CPC E21B 19/02 (2013.01) [B66D 1/58 (2013.01); E21B 19/08 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A winch overload protection system, comprising:
an overload detection unit operable to detect when a load on a winch of a workover system exceeds a safety load limit; and
an overload control unit configured to receive an overload signal from the overload detection unit, and in response thereto disengage a brake on the winch, wherein the overload detection unit includes a pivotable frame for supporting the winch, a pre-loaded anti pivot device coupled to the frame, the pre-loaded anti pivot device configured to hold the frame in a substantially fixed position until the winch exceeds the safety load limit, and a movement sensor for detecting movement of the frame when the winch exceeds the safety load limit.