Seal and seal assembly for well tools

Details Seal and seal assembly for well tools Seal and seal assembly for well tools

1986-10-30

1988-06-28

Ward, Robert S.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277 31, 277DIG6, 166120, 166179, 166196, 524496, 524520, 525153, F16J 1546, F16J 1556, C08G 802, E21B 33128

Patent

active

047534443

ABSTRACT:
A seal and seal assembly for use with well tools, such particularly as well packers, for sealing the annulus between the well packer mandrel and the wall of a well tubing such as casing. The seal is fabricated of an elastomeric-like material comprising fluorocarbon resins, poly arylene ketone, and carbon fibers mounted between end retainer assemblies each comprising a mesh anti-extrusion ring, a tapered mesh backup ring, and a metal backup shoe. The seal has internal longitudinally spaced V-shaped recesses to cause the seal to buckle radially outwardly as it is compressed longitudinally to increase the stress along the middle portion of the seal where the seal meets the well casing inner wall. The seal is useful at high temperatures and pressures such as 550 degrees F. and greater than 15,000 psi.

REFERENCES:
patent: 4296806 (1981-10-01), Taylor et al.
patent: 4592782 (1986-06-01), Davies
patent: 4611658 (1986-09-01), Salerni et al.
patent: 4638044 (1987-01-01), Kelsey
patent: 4654263 (1987-03-01), Cox
patent: 4665978 (1987-05-01), Luke
patent: 4709758 (1987-12-01), Preston

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