CNBC | Lessons from shale industry will reshape global oil market Financial Times Although US shale oil accounts for less than 5 per cent of the global oil market, it has already had a profound impact. The rapid growth in US shale oil last year was the main factor causing the collapse in oil prices: US oil production increased by ... Oil: No gain without pain for Saudi Arabia Consumers start looking for more gas supplies than oil Saudi Arabia's output policy on crude working, says oil guru |