Cladding method and expansion tool

Details Cladding method and expansion tool Cladding method and expansion tool

2011-06-07

2011-06-07

Brinson, Patrick F (Department: 3754)

Pipes and tubular conduits

Repairing

Patches

C138S097000, C166S207000, C156S294000, C156S287000, C264S269000, C264S036100, C264S516000

Reexamination Certificate

active

07954516

ABSTRACT:
A cladding method for sealing a leak in a casing, a pipeline, a borehole, or a well downhole using a liner having a tube with a first diameter, a plurality of circumferential grooves, and a plurality of seals in the grooves extending beyond the first diameter. The cladding method has at least the steps of fastening the liner in a fastening mechanism of an expansion tool, inserting the liner having a first part and a second part into the casing outside the leak, positioning an expansion mechanism of the expansion tool at the first part of the liner, expanding the first part of the liner until the seals in the grooves of the first part of the liner are pressed against the casing and fasten the first part to the casing, releasing the liner so that the liner is free of the tool and the liner is held in place by the seals in the first part of the liner, and expanding all the way through the liner by expanding also the second part of the liner to abut the casing for sealing the leak.

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International Preliminary Report on Patentability prepared by WIPO dated Oct. 27, 2009.

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