U.S. tight oil production increased in 2017, accounting for 54 % of total U.S. crude oil production, in part because of the increasing productivity of new wells. (news.peak-oil.org)
«We have an explosion of tight oil production in Canada and the United States, and most of it is moving by train,» said Anthony Swift, a lawyer with the Natural Resources Defense Council in Washington. (nytimes.com)
Shale deposits in North Dakota, New York, Texas, and elsewhere have helped increase U.S. tight oil production from 23 percent of domestic oil production in 2011 to 45 percent in 2013. (ucsusa.org)