If I don't screw up: 106 000 tons per year (2006) means 290 tons per day, one ton of crude is around 42 GJ so that's 12.2e12 J per day, 30 MW for a day is 2.6e12 J so a bit more than 1 unit of "electricity" energy to get 5 unit of "oil" energy (not counting refining, further transport, etc...).

Of course in the begining when they pumped out 750 000 tons per day the ratio was 7 times better.