Robert A. Hefner III | Why the Shale Oil and Gas Boom Could Only Have Happened in the United States | Foreign Affairs

Since the shale boom began, over a decade ago, companies have drilled about 150,000 horizontal wells in the United States, a monumental undertaking that has cost approximately $1 trillion. The rest of the world, however, has drilled only hundreds of horizontal wells. And because each borehole runs horizontally for about one mile (and sometimes even two miles) and is subjected to ten or more fracking injections, companies in the United States have fracked about 150,000 miles of shale about two million times. That adds up to around a thousand times as much shale exposed inside the United States as outside it.

via Robert A. Hefner III | Why the Shale Oil and Gas Boom Could Only Have Happened in the United States | Foreign Affairs.