System and method for recovery of fuel products from...

Wells – Processes – Distinct – separate injection and producing wells

Reexamination Certificate

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C166S272700, C166S060000, C166S302000

Reexamination Certificate

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07735554

ABSTRACT:
A system for gasification of carbonaceous deposits below the ground surface comprising: an injection well assembly comprising one end positioned at the ground surface and the opposite end of the injection well assembly located within the carbonaceous deposit; a production well assembly comprising one end positioned at the ground surface and the opposite end of the production well assembly located within the carbonaceous deposit; a non-vertical reaction shaft assembly located within the carbonaceous deposit a distance below ground surface, the non-vertical reaction shaft having a length and comprising an injection end in communication with the end of the injection well assembly located within the carbonaceous deposit and a production end in communication with the end of the production well assembly located within the carbonaceous deposit; and a mobile electric device configured to move within the non-vertical reaction shaft assembly. A method for gasifying underground carbonaceous deposits using an electric device.

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International Search Report and Written Opinion for PCT/US2008/058599 dated Aug. 20, 2008 (9 pages).

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