04498535 is referenced by 241 patents and cites 8 patents.

A system and method provide for preferential in situ heating of earth formations. A plurality of elongated conductive electrodes are emplaced in earth formations in respective spaced rows bounding a particular volume of the earth formations and forming a transmission line, preferably a triplate line, extending in the direction of the electrodes with the particular volume of the earth formations providing a dielectric medium between respective rows of electrodes. Electromagnetic energy is supplied to the transmission line at a frequency at which the spacing between respective rows is less than about twice the skin depth at the frequency of the applied energy. Reactance means are disposed along respective electrodes to provide predetermined effective transmission line characteristics to develop a predetermined heating pattern in the earth formations. The reactance means may be reactances disposed discretely between sections of respective electrodes. The reactance means may also be disposed between respective electrodes and the earth formation, as by a dielectric coating. A heating pattern may be developed to heat hydrocarbon rich deposits preferentially.

Title
Apparatus and method for in situ controlled heat processing of hydrocarbonaceous formations with a controlled parameter line
Application Number
6/445672
Publication Number
4498535
Application Date
November 30, 1982
Publication Date
February 12, 1985
Inventor
Jack E Bridges
Park Ridge
IL, US
Agent
Fitch Even Tabin & Flannery
Assignee
IIT Research Institute
IL, US
IPC
E21B 36/04
E21B 43/24
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