The Powder River Basin, well known for its abundant coal supply, is experiencing a turnaround in oil production. Production has rebounded from a low of 38,000 barrels per day (bbl/d) in 2009 to 78,000 bbl/d during first-quarter 2014. Although U.S. oil production growth is occurring primarily in the Bakken, Eagle Ford, and Permian Basins , the Powder River Basin is among other regions of the country that have also benefitted from the application of horizontal drilling and hydraulic fracturing . The increase in Powder River Basin oil production is largely attributable to production growth in the Turner, Parkman, and Niobrara-Codell formations, which collectively increased from 4,700 bbl/d in 2009 to 36,300 bbl/d in first-quarter 2014, increasing their share of total Powder River Basin oil production from 12% to 46%. Three other formations—the Shannon, Sussex, and Frontier—also rose from 2009 to 2014, […]