Thanks for that troubleshooter, I had heard of the "hot deep" theory before.
I have downloaded
Gold's 1992 paper and will study it at dept when I have time.
One thing strikes me is if oil is a renewable resource why did
oil production in the US peak in 1970 and why has it not recovered yet?
perhaps it is possible that oil is a biotic product but the process of it's biotic creation is slow and reservoirs can be emptied and only refill in timescales that are of no use to Mankind