Subsurface radiating dipole

Details Subsurface radiating dipole Subsurface radiating dipole

1984-04-24

1986-04-22

Lieberman, Eli

Wells

With heating, refrigerating or heat insulating means

Electrical heater in well

166248, 219278, 343719, E21B 3604, E21B 4324

Patent

active

045835896

ABSTRACT:
A system for in situ heating of oil shale by radiating electromagnetic wave energy from a dipole radiator positioned beneath an overburden in a body of oil shale. Radio frequency power is supplied from the surface through a transmission line to the radiator dipoles whose diameters are substantially greater than the spacing between the transmission line conductors. The dipole radiator is center fed by the transmission line through a reentrant choke structure substantially filled with a solid dielectric medium and concentric with one of said dipole elements.

REFERENCES:
patent: 2757738 (1956-08-01), Ritchey
patent: 3114875 (1963-12-01), Haagensen
patent: 3133592 (1964-05-01), Tomberlin
patent: 3170519 (1965-02-01), Haagensen
patent: 3588903 (1971-06-01), Hampton
patent: 3680133 (1972-07-01), Tsao et al.
patent: 3713166 (1973-01-01), Munson et al.
patent: 4140179 (1979-02-01), Kasevich et al.
patent: 4373581 (1983-02-01), Toellner

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