Method and apparatus for repairing casings and the like

Details Method and apparatus for repairing casings and the like Method and apparatus for repairing casings and the like

1989-01-10

1990-04-03

Novosad, Stephen J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156294, 166187, 166277, 166387, E21B 33127, E21B 2910

Patent

active

049137581

ABSTRACT:
An improved device and process for creating a lining in a bore transfers strip wrapped in overlapping spiral fashion about a mandrel to the bore wall such that the edge-to-edge relation of the spirally-wrapped strip is maintained from the mandrel to the bore wall. Adhesive is applied to the strip surface during wrapping thereof on the mandrel. The invention provides a new bore with a thin, strong, corrosion resistant lining over a preselected portion of its length that is substantially pressure tight internally and externally and leak proof thus permitting substantial reuse of the lined bore.

REFERENCES:
patent: 3364993 (1968-01-01), Skipper
patent: 4246964 (1981-01-01), Brandell
patent: 4566535 (1986-01-01), Sanford
patent: 4589484 (1986-05-01), Doherty et al.
patent: 4791966 (1988-12-01), Eilentropp

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