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.