"Everything will depend on what oil companies decide to do, but if they don't exploit the fields which break even with the barrel above USD 80, USD 150 billion will go down the drain," chief analyst at Rystad Energy, Per Magnus Nysveen, told AFP.
Today, Brent crude fell close to USD 69 a barrel in London, a drop of 40 per cent from June.
Falling oil prices combined with high production costs in the sector force oil companies to postpone or even cancel developments of oil finds in order to maintain their cash flow.
"Anything with high costs will be vulnerable: the Arctic, oil sands and small deep-water projects," Nysveen said.
"All countries will suffer. Russia will suffer because of the Arctic. Canada and Alaska will suffer ... Whereas US shale oil has become less expensive to produce and should therefore not suffer that much."
Rystad Energy refuses to publish its estimates on the future evolution of barrel prices but, according to Nysveen, there are no signs of a pick-up in the near future.
