Oil well heater cable

Wells – Processes – Heating – cooling or insulating

Patent

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Details

166 60, 219541, E21B 3604, H05B 356

Patent

active

057823014

ABSTRACT:
A heater cable is strapped alongside tubing in a well to heat the production fluids flowing through the tubing. The heater cable has three copper conductors surrounded by a thin electrical insulation layer. An extrusion of lead forms a protective layer over the insulation layers. The lead sheaths have flat sides which abut each other to increase heat transfer. A metal armor is wrapped around the lead sheaths of the three conductors in metal-to-metal contact. Three phase power is supplied to the conductors, causing heat to be generated which transmits through the lead sheaths and armor to the tubing.

REFERENCES:
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patent: 4152577 (1979-05-01), Leavines
patent: 4454378 (1984-06-01), Neuroth
patent: 4490577 (1984-12-01), Neuroth
patent: 4570715 (1986-02-01), Van Meurs et al.
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patent: 4626665 (1986-12-01), Fort, III
patent: 4704514 (1987-11-01), Van Egmond et al.
patent: 4707568 (1987-11-01), Hoffman et al.
patent: 5060287 (1991-10-01), Van Egmond
patent: 5414217 (1995-05-01), Neuroth et al.
Cable Armor Configurations, by Centrilift, (Consisting of 7 brochure sheets).
Petrotrace, (brochure consisting of 12 sheets).

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