Downhole axial force generating tool

Details Downhole axial force generating tool Downhole axial force generating tool

2006-04-04

2006-04-04

Neuder, William (Department: 3672)

Wells

Processes

Freeing stuck object, grappling or fishing in well

C166S098000, C294S086180, C294S086230

Reexamination Certificate

active

07021382

ABSTRACT:
An axial force generating tool for applying a force on a structure positioned within a borehole is taught. The tool includes a housing (19) sized to fit within the borehole in which the tool is required to act; an outer seal (38) disposed about the housing and selected to create a seal between the housing and the borehole; an inner bore (32) through the housing including a seal to prevent flow from the inner bore out through the lower end; an opening (34) to the inner bore above the seal; a bracing means (36) for maintaining the housing against axial movement in the borehole once the housing is in a selected position within the borehole; a piston (27) mounted in sliding engagement wiht the housing for axial movement relative to the housing, the piston positioned to act between a pressure differential establishable between the inner bore and the borehole between the seal and the lower end to drive the piston axially relative to the housing; and a grapple connected to the piston for axial movement therewith.

REFERENCES:
patent: 2377249 (1945-05-01), Lawrence
patent: 2537413 (1951-01-01), Lawrence
patent: 2595014 (1952-04-01), Smith et al.
patent: 2806534 (1957-09-01), Potts
patent: 2915126 (1959-12-01), Potts
patent: 2984302 (1961-05-01), Church et al.
patent: 3016954 (1962-01-01), Crowell
patent: 3752230 (1973-08-01), Bernat et al.
patent: 4311195 (1982-01-01), Mullins, II
patent: 4407364 (1983-10-01), Johnston
patent: 5040598 (1991-08-01), Pleasants
patent: 5070941 (1991-12-01), Kilgore
patent: 5209304 (1993-05-01), Nice
patent: 5228507 (1993-07-01), Obrejanu et al.
patent: 5398753 (1995-03-01), Obrejanu et al.
patent: 5673754 (1997-10-01), Taylor, Jr.
patent: 5947202 (1999-09-01), Gazelwood
patent: 6012518 (2000-01-01), Pringle et al.
patent: 6095583 (2000-08-01), Beeman et al.
patent: 2 361 727 (2001-10-01), None
patent: WO 97/29270 (1997-08-01), None
patent: WO 01/84040 (2001-08-01), None

Affiliated with

Also associated with

Rating

Downhole axial force generating tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Downhole axial force generating tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Downhole axial force generating tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3584184