Self-locating seal assembly

Details Self-locating seal assembly Self-locating seal assembly

1987-04-22

1988-08-23

Leppink, James A.

Wells

Central chamber sealed with respect to prepositioned...

166137, 166215, 166237, E21B 2302

Patent

active

047654023

ABSTRACT:
A self-locating seal assembly is shown for sealing between a well string and the bore of a surrounding well conduit, the surrounding conduit being provided with an internal recess for engagement by the seal assembly. A mandrel has an internal bore, an exterior, and a lower end. A seal body is carried about the mandrel and has an external seal region for engaging the interior bore of the surrounding well conduit and an internal seal region for engaging the mandrel exterior. The seal body provided with a plurality of window openings, each opening having an upper and lower tapered ramp surface. An upper and a lower sleeve circumscribe the seal body about the window openings and are spaced to define a circumferential opening with respect to the exterior of the seal body. A plurality of latch elements are carried in the annular circumferential opening and have camming surfaces which cooperate with the ramp surfaces of the window openings. A spring is located in an annular recess above the latch elements to initially bias the latch elements radially outward in the direction of the surrounding well conduit.

REFERENCES:
patent: 2862560 (1958-12-01), Bostock et al.
patent: 3100532 (1963-08-01), Tamplen
patent: 3102592 (1963-09-01), Dollison
patent: 4248300 (1981-02-01), Braddick
patent: 4265306 (1981-05-01), Stout
patent: 4281711 (1981-08-01), Braddick et al.
patent: 4399873 (1983-08-01), Lindsey, Jr.
patent: 4406324 (1983-09-01), Baugh et al.
patent: 4411455 (1983-10-01), Schnatmeyer
patent: 4657077 (1987-04-01), Smith, Jr. et al.

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