Wells – Automatic
Patent
1981-01-19
1983-02-15
Novosad, Stephen J.
Wells
Automatic
166 60, 166 66, 166248, 166250, 333 17M, 333 32, E21B 4324, E21B 4700, E21B 4312
Patent
active
043735819
ABSTRACT:
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 may be 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.
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patent: 4193451 (1980-03-01), Dauphine
patent: 4301865 (1981-11-01), Kasevich et al.
Beard William J.
Halliburton Company
Novosad Stephen J.
Suchfield George A.
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