H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/1
H05B 6/10 (2006.01) E21B 36/04 (2006.01) E21B 43/24 (2006.01) H05B 6/04 (2006.01)
Patent
CA 1172703
ABSTRACT OF THE DISCLOSURE The disclosure relates to a technique for radio frequency heating of hydrocarbonaceous earth formations in which a high power radio frequency transmitter is impedance matched to a transmission line including a plurality of conductors at least partially embedded in the formation to be heated. The impedance matching maybe effected by a "T" network having three variable reactances. In accordance with the teachings of the present invention, continuous variations of impedance, of the type encountered during the heating of the formation, may be matched in unambiguously defined Smith chart regions by varying two of the three reactances to minimize reflected power from the transmission line.
389312
Company Halliburton
Swabey Ogilvy Renault
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