Glojo - You say "if there is oil", and that it will be "in a very deep part of the ocean" and not easy to extract.
Rockhopper's SeaLion field (in about 450 metres of sea depth, about 150 miles North of the Falklands) has an estimated production life of 25 years, is considered to be economically viable in isolation (i.e. with no other fields being developed alongside it throughout its life), has recently had a billion dollars of investment into the company and is almost certainly going to go into production even in the unlikely event that no other viable fields are discovered. They are expecting to have first oil to market by 2017.
I think your "rumours" have already become "facts"..............