Sealing device

Details Sealing device Sealing device

2011-03-22

2011-03-22

Thompson, Kenneth (Department: 3672)

Wells

Processes

Destroying or dissolving well part

C166S192000

Reexamination Certificate

active

07909104

ABSTRACT:
A decomposable sealing device is described for use in liquid-filled pipes or boreholes, which is characterised in that the sealing device comprises a sleeve-shaped element (19) which envelops a number of strata (5, 7, 9) completely or partly in the pipe's radial and a longitudinal direction, comprising layered division of a number of decomposable strata (5, 7, 9) and a number of closed liquid-filled chambers (16) arranged between the strata (5, 7, 9) and where the sleeve-shaped element (19) comprises a body (2) which can be rearranged to establish connection between the respective chambers (16) and one or more grooves (14) in the inner wall of a pipe. A method for decomposing the sealing device is also described.

REFERENCES:
patent: 5607017 (1997-03-01), Owens et al.
patent: 939194 (1999-09-01), None
patent: 1006258 (2000-06-01), None
patent: 2005049961 (2005-06-01), None

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