I read the original article and was impressed by the huge estimated size of the offshore Norwegian coal deposits.  But what I have no knowledge of is the concensus regarding the feasibility of doing in situ deep-water coal gasification.

Has this ever been tried on a pilot scale?  How deep are these coal deposits?  How do you go about doing gasification from an off-shore rig?

I'm sure that some of the anti-peak oil people will cite this finding as proof that we have nothing to worry about, so what I'd like to know is what is the state of the are regarding  offshore coal gasification?

Anybody out there who can make me smart on this subject?

To my knowledge, off-shore in-situ gasification has never been tried.  To tell the truth, on-shore in-situ gasification has never been done on a large scale.