Lynn Helms, directors of the North Dakota Oil and Gas Division, speaks at the opening day of the Williston Basin Petroleum Conference in Bismarck, N.D. Tuesday, May 22, 2012. (AP Photo/The Bismarck ... more 
Lynn Helms, directors of the North Dakota Oil and Gas Division, speaks at the opening day of the Williston Basin Petroleum Conference in Bismarck, N.D. Tuesday, May 22, 2012. (AP Photo/The Bismarck Tribune, Mike McCleary) less 
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Associated Press | Photo By The Bismarck Tribune, Mike McCleary
Tue, May 22, 2012 9:59 PM EDT