Wireline fishing safety sleeve

Details Wireline fishing safety sleeve Wireline fishing safety sleeve

2005-08-09

2005-08-09

Dang, Hoang (Department: 3672)

Wells

Processes

Freeing stuck object, grappling or fishing in well

C166S075110, C166S085100, C166S242200, C166S379000, C166S385000

Reexamination Certificate

active

06926082

ABSTRACT:
A safety sleeve used with a wireline connection where the safety sleeve comprises an elongated body with an axial aperture formed along its axis. The wireline connection connects a severed wireline and can be comprised of a fishing spear and a fishing overshot. The safety sleeve axially encompasses the wireline connection assembly with its elongated body. The bending moment required to yield said safety sleeve is greater than the maximum bending moment experienced by the combination of the safety sleeve and the wireline connection during operation. The safety sleeve can also include a collar threadedly connectable to one side of the elongated body, a window formed along the elongated body, and a raised portion formed on the inner radius of the elongated body. The invention further includes a method of using the safety sleeve in conjunction with a wireline connection assembly.

REFERENCES:
patent: 2187007 (1940-01-01), Barnes
patent: 4635718 (1987-01-01), Thomas
patent: 4832128 (1989-05-01), Light et al.
patent: 4877089 (1989-10-01), Burns
patent: 5392851 (1995-02-01), Arend
patent: 5477921 (1995-12-01), Tollefsen
patent: 6412552 (2002-07-01), Rooks

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