Controlled weak point for wireline cable

Details Controlled weak point for wireline cable Controlled weak point for wireline cable

H - Electricity

01

B

H01B 7/24 (2006.01) E21B 17/02 (2006.01) E21B 17/06 (2006.01)

Patent

CA 2059066

Abstract of the Disclosure A controllable dual weak point device for insertion in a wireline between the cable and tool. The device consists of upper and lower sections that are slidably joined together in releasable interlocking manner with the upper section secured to the cable and the lower section secured to the tool. The upper and lower sections are joined together by a concentric arrangement of central tube, mandrel and limiting sleeve which are interconnected by first and second springs and first and second shear pin arrangements, i.e., the respective first and second weak points.

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