Wall Street Journal: Big Oil Heads Back Home

Big Oil is redrawing the energy map.

For decades, its main stomping grounds were in the developing world—exotic locales like the Persian Gulf and the desert sands of North Africa, the Niger Delta and the Caspian Sea. But in recent years, that geographical focus has undergone a radical change. Western energy giants are increasingly hunting for supplies in rich, developed countries—a shift that could have profound implications for the industry, global politics and consumers.

Driving the change is the boom in unconventionals—the tough kinds of hydrocarbons like shale gas and oil sands that were once considered too difficult and expensive to extract and are now being exploited on an unprecedented scale from Australia to Canada.   HERE