Controlled weak point for wireline cable

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

1991-04-29

1992-05-05

Dang, Hoang C.

Wells

With electrical means

166377, 166385, 285 3, E21B 2300

Patent

active

051099217

ABSTRACT:
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.

REFERENCES:
patent: 4648444 (1987-03-01), Busch
patent: 4685516 (1987-08-01), Smith et al.
patent: 4697641 (1987-10-01), White
patent: 4706744 (1987-11-01), Smith et al.
patent: 4736797 (1988-04-01), Restarick, Jr. et al.
patent: 4753291 (1988-06-01), Smith et al.
patent: 4759406 (1988-07-01), Smith et al.
patent: 4776393 (1988-10-01), Forehand et al.

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