Summary of WHITING PETROLEUM CORP

Item 8.01. Other Events.
On June 15, 2009, Whiting Petroleum Corporation (the "Company") and its subsidiary Whiting Oil and Gas Corporation ("Whiting Oil and Gas") entered into a First Amendment ("Amendment") to Fourth Amended and Restated Credit Agreement ("Credit Agreement") with JPMorgan Chase Bank, N.A., as Administrative Agent, and the other agents and lenders party thereto. The Amendment amends the Credit Agreement to permit the Company to pay dividends on its convertible perpetual preferred stock that it may issue in the public offering described below provided that neither the Company nor Whiting Oil and Gas is in default under the Credit Agreement. The foregoing description of the Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the Amendment. The Company is filing a copy of the Amendment as Exhibit 4.1 hereto, which is incorporated by reference herein.
On June 16, 2009, the Company issued a press release announcing that it had commenced a public offering of 3,000,000 shares of its convertible perpetual preferred stock. The Company will also grant the underwriters for the offering an option to purchase up to an additional 450,000 shares to cover over-allotments, if any. The Company is filing a copy of such press release as Exhibit 99.1 hereto, which is incorporated by reference herein. Item 9.01. Financial Statements and Exhibits.
(a) Not applicable.

(b) Not applicable.

(d) Exhibits:

     (4.1)    First Amendment to Fourth Amended and Restated Credit Agreement,
              dated as of June 15, 2009, among Whiting Petroleum Corporation,
              Whiting Oil and Gas Corporation, JPMorgan Chase Bank, N.A., as
              Administrative Agent, and the other agents and lenders party thereto.

     (99.1)   Press Release of Whiting Petroleum Corporation dated June 16, 2009.

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