Why Billions in Proven Shale Oil Reserves Suddenly Became UnprovenBy
U.S. companies erased more than 20 percent of inventories
Regulator examined estimates as wells lingered on books
Ultra Petroleum Corp. was a shale success story. A former penny stock that made the big leagues, it was worth almost $15 billion at its 2012 peak.
To continue reading this article you must be a Bloomberg Professional Service Subscriber.
If you believe that you may have received this message in error please let us know.