Earnings Release Date and Conference Call

DENVER, April 17 /PRNewswire-FirstCall/ -- Whiting Petroleum Corporation (NYSE: WLL) will release its first quarter 2007 financial and operating results on Thursday, April 26, 2007 after the market closes. A conference call with investors, analysts and other interested parties is scheduled for 11:00 a.m. EDT (10:00 a.m. CDT, 9:00 a.m. MDT) on Friday, April 27, 2007 to discuss Whiting's first quarter financial and operating results. Please call (866) 356-3093 (U.S./Canada) or (617) 597-5381 (International) to be connected to the call and enter the pass code 83287998. Access to a live Internet broadcast will be available at www.whiting.com by clicking on the link titled "Webcasts."

A telephonic replay will be available beginning approximately two hours after the call on Friday, April 27, 2007 and continuing through Friday, May 4, 2007. You may access this replay at (888) 286-8010 (U.S./Canada) or (617) 801-6888 (International) and entering the pass code 13634988. You may also access a web archive at www.whiting.com beginning approximately one hour after the conference call.

About Whiting Petroleum Corporation

Whiting Petroleum Corporation is a holding company engaged in oil and natural gas acquisition, exploitation, exploration and production activities primarily in the Permian Basin, Rocky Mountains, Mid-Continent, Gulf Coast and Michigan regions of the United States. The Company trades publicly under the symbol WLL on the New York Stock Exchange. For further information, please visit www.whiting.com.

SOURCE Whiting Petroleum Corporation

CONTACT: John B. Kelso, Director of Investor Relations of Whiting Petroleum Corporation, +1-303-837-1661, john.kelso@whiting.com -0- Apr/17/2007 21:57 GMT

Last Updated: April 17, 2007 17:57 EDT