Method and apparatus for combating encroachment by in situ treat

Details Method and apparatus for combating encroachment by in situ treat Method and apparatus for combating encroachment by in situ treat

1984-09-13

1986-03-18

Suchfield, George A.

Wells

Processes

Electric current or electrical wave energy through earth for...

166 60, 166104, 166173, 166311, 166 651, E21B 3702, E21B 3604, E21B 4324

Patent

active

045762317

ABSTRACT:
A method and apparatus is applicable to in situ heating of oil shale or tar sand. The heating is by radio frequency that is applied down hole by a central conductor that extends beyond a coaxial shielding conductor to form the antenna or applicator. Encroachment by the heated formation is overcome by applying motion to the central conductor to remove encroaching formations.

REFERENCES:
patent: 2757738 (1956-08-01), Ritchey
patent: 3152642 (1964-10-01), Bodine, Jr.
patent: 3199599 (1965-08-01), Kammerer, Jr.
patent: 4140179 (1979-02-01), Kasevich et al.
patent: 4396062 (1983-08-01), Iskander
patent: 4398597 (1983-08-01), Haberman
patent: 4476926 (1984-10-01), Bridges et al.
patent: 4508168 (1985-04-01), Heeren

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