Chevron is paying $33 billion to acquire Anadarko Petroleum in a massive deal that will bolster its natural gas and shale operations.
ExxonMobil is turning to Microsoft's cloud technology to help it safely capitalize on America's fast-moving shale oil boom.
BP is bulking up its operations in the United States.
Head-spinning price swings have returned with a vengeance to the oil market.
ExxonMobil missed the invitation to America's big oil party.
The U.S. shale oil boom is recovering from the crash faster than almost anyone imagined, OPEC included.