Conduit tube of an electrode device for electrically heating...

Details Conduit tube of an electrode device for electrically heating... Conduit tube of an electrode device for electrically heating...

E - Fixed Constructions

21

B

309/6

E21B 36/04 (2006.01) E21B 43/25 (2006.01) H05B 3/42 (2006.01)

Patent

CA 1200827

ABSTRACT: A conduit tube of an electrode device for electrically heating underground hydrocarbon resources, which comprises: a metal conduit tube and an electrically insulative covering adhered on and around the outer peripheral surface of said metal conduit tube, said electrically insulative covering being formed by adhering polyether/ether/ketone resin in powder form having particle size of a range of from 10 to 100 µm on and around said metal conduit tube which has been preheated to a temperature range of from 350°C to 450°C by the electrostatic coating method, and fusion-bonding the electrically insulative covering material thereon at said temperature range of the preheating.

452868

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