Whiting Petroleum Corp. announced the retirement of J. Douglas Lang, Whiting's Vice President of Reservoir Engineering/Acquisitions, effective June 30, 2013. Mr. Lang joined Whiting in December 1999 and was appointed VP-Reservoir Engineering/Acquisitions in October 2004.

Steven A. Kranker has been appointed Vice President- Reservoir Engineering/Acquisitions, effective July 1, 2013. Steve joined Whiting in March 2013 as First Director -- Acquisitions/Reservoir Engineering. Prior to joining Whiting, Mr. Kranker was Manager, Reserves for Bill Barrett Corp.

Mr. Kranker's previous experience includes reservoir engineering positions with Forest Oil Corporation, Brunei Shell Petroleum, Arco Alaska Inc., Conoco Inc., and Shell Western E&P Inc. He received his B.S. in Petroleum Engineering from the Colorado School of Mines. Mr. Kranker is a member of the Society of Petroleum Engineers.