Conduct pipe covered with electrically insulating material

Details Conduct pipe covered with electrically insulating material Conduct pipe covered with electrically insulating material

1984-03-21

1988-11-22

Thronson, Mark J.

Pipes and tubular conduits

Combined

With end structure

166248, F16L 902

Patent

active

047858524

ABSTRACT:
A conduct pipe covered with an electrical insulating material, which is obtained by a process comprising winding a polyether ether ketone resin film around the outside of a metal conduct pipe, carrying out impregnation treatment in vacuum under pressure with using an impregnant resin comprising an ether bonding epoxy resin, and thereafter hardening by heating, is disclosed. The conduct pipe is particularly useful in an electrode apparatus for collecting underground hydrocarbon resources by an electrically heating method.

REFERENCES:
patent: 2646822 (1953-07-01), Ferguson
patent: 3446654 (1969-05-01), Barth
patent: 3956240 (1976-05-01), Dahl et al.
patent: 4157287 (1979-06-01), Christenson
patent: 4303128 (1981-12-01), Marr, Jr.

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