04457365 is referenced by 288 patents and cites 7 patents.

The process and apparatus for extracting the products of kerogen in situ from an oil shale body by supplying energy selectively to the kerogen by high frequency electric fields in the frequency range between 100 kilohertz and 1000 megahertz at an intensity which heats the kerogen to a temperature range between 250.degree. C. and 500.degree. C. to allow pyrolysis of the kerogen prior to substantial heat transfer to the surrounding mineral portions of the oil shale. A plurality of groups of spaced radiators produce the electric fields for heating the kerogen. A dipole radiator in the subsurface formation is supplied with electromagnetic energy through a transmission line from an energy generator on the surface.

Title
In situ radio frequency selective heating system
Application Number
756165
Publication Number
4457365
Application Date
August 10, 1981
Publication Date
July 3, 1984
Inventor
Arthur S Dwyer
Braintree
MA, US
Myer Kolker
Bedford
MA, US
Raymond S Kasevich
Weston
MA, US
Agent
Joseph D Pannone
Richard M Sharkansky
Walter F Dawson
Assignee
Raytheon Company
MA, US
IPC
E21B 43/24
E21B 36/04
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