Sealing system for the interspace in the transition region...

Details Sealing system for the interspace in the transition region... Sealing system for the interspace in the transition region...

2006-02-28

2006-02-28

Bay, Jennifer H (Department: 3672)

Wells

Conduit wall or specific conduit end structure

Downhole coupling or connector

C166S240000, C166S237000

Reexamination Certificate

active

07004250

ABSTRACT:
A sealing system for the interspace in the transition region between two well pipes of different diameters, and a mounting tool for producing the sealing connection. The mounting tool is lowered via a drilling string through a larger diameter pipe and, with a sealing system, is placed on a holding docket on the upper end of a lower, smaller diameter, pipe. A rotation exerted on the mounting tool via the drilling string; causes the sealing system to be fixed to the lower pipe. Via the drilling string, the mounting tool is pressed vertically downwards against a sealing ring of the sealing system which, as a result, bears in a sealing manner against the inner wall of the upper pipe of larger diameter. This sealing position is fixed by rotating the mounting tool in one direction and by rotating the mounting tool in the other direction.

REFERENCES:
patent: 1772682 (1930-08-01), Phipps
patent: 2447629 (1948-08-01), Beissinger et al.
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patent: 3669190 (1972-06-01), Sizer et al.
patent: 4611662 (1986-09-01), Harrington
patent: 5261492 (1993-11-01), Duell et al.
patent: 6857473 (2005-02-01), Cook et al.
patent: 79 09 727 (1979-04-01), None
patent: 79 09 727 (1979-04-01), None
patent: 3034992 (1982-04-01), None
patent: 43 38 518 (1995-05-01), None

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