S-4

As filed with the Securities and Exchange Commission on December 23, 2004

Registration No. 333-                

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-4

REGISTRATION STATEMENT

Under

THE SECURITIES ACT OF 1933

WHITING PETROLEUM CORPORATION

(Exact name of registrant as specified in its charter)

Delaware	1311	20-0098515
(State or other jurisdiction of incorporation or organization)	(Primary Standard Industrial Classification Code Number)	(I.R.S. Employer Identification No.)

1700 Broadway, Suite 2300

Denver, Colorado 80290-2300

(303) 837-1661

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

James J. Volker

Chairman, President and Chief Executive Officer

Whiting Petroleum Corporation

1700 Broadway, Suite 2300

Denver, Colorado 80290-2300

(303) 837-1661

(Name, address, including zip code, and telephone number, including area code, of agent for service)

With a copy to:

Benjamin F. Garmer, III

Foley & Lardner LLP

777 East Wisconsin Avenue

Milwaukee, Wisconsin 53202-5367

(414) 271-2400

Approximate date of commencement of proposed sale to the public: From time to time after this Registration Statement becomes effective.

If the securities being registered on this Form are to be offered in connection with the formation of a holding company and there is compliance with General Instruction G, check the following box. ¨

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ¨

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities to Be Registered	Amount to Be Registered	Proposed Maximum Offering Price per Share (1)	Proposed Maximum Aggregate Offering Price (1)	Amount of Registration Fee
Common Stock, par value $.001	3,250,000 shares	$30.27	$98,377,500	$11,580

(1) Estimated solely for the purpose of calculating the registration fee pursuant to Rule 457(c) under the Securities Act of 1933 based upon the average of the high and low prices for Whiting Petroleum Corporation Common Stock as reported on The New York Stock Exchange on December 20, 2004.

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933 or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any state where this offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED DECEMBER 23, 2004

Prospectus

Whiting Petroleum Corporation

3,250,000 Shares of Common Stock

By this prospectus, we may offer up to 3,250,000 shares of our common stock from time to time in connection with acquisitions of businesses, assets or securities of other companies whether by purchase, merger or any other form of acquisition or business combination.

The amount and type of consideration we will offer and the other specific terms of each acquisition will be determined by negotiations with the owners or the persons who control the businesses, assets or securities we may acquire. We may structure business acquisitions in a variety of ways, including acquiring stock, other equity interests or assets of the acquired business, merging the acquired business with us or one of our subsidiaries or acquiring the acquired business through one of our subsidiaries. We expect that the price of the shares we issue will be related to their market price, either when we tentatively or finally agree to the particular terms of the acquisition, when we issue the shares, when the acquisition is completed or during some other negotiated period, and may be based on average market prices or otherwise. We may issue shares at fixed offering prices, which may be changed, or at other negotiated prices. We may be required to provide further information by means of a post-effective amendment to the registration statement or a supplement to this prospectus once we know the actual information concerning a specific acquisition.

We will pay all expenses of this offering. We do not expect to pay any underwriting discounts or commissions in connection with issuing these shares, although we may pay finder’s fees in connection with certain acquisitions. Any person receiving a finder’s fee may be deemed an underwriter within the meaning of the Securities Act of 1933.

We may also permit individuals or entities who have received or will receive shares of our common stock in connection with the acquisitions described above to use this prospectus to cover resales of those shares. See “Resales of Shares” for information relating to resales of our common stock pursuant to this prospectus.

Our common stock is listed on the New York Stock Exchange under the symbol “WLL.” We will apply to list the shares offered by this prospectus on the New York Stock Exchange. On December 22, 2004, the closing sale price of our common stock was $30.39 per share.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is                             , 200  .

TABLE OF CONTENTS

	Page
About This Prospectus	2
Special Note Regarding Forward-Looking Statements	3
Whiting Petroleum Corporation	4
Use of Proceeds	4
Description of Capital Stock	4
Plan of Distribution	6
Resales of Shares	6
Where You Can Find More Information	8
Legal Matters	9
Experts	9

ABOUT THIS PROSPECTUS

In this prospectus, unless the context otherwise requires, “Whiting,” “we,” “us,” “our” or “ours” refer to Whiting Petroleum Corporation, together with its operating subsidiaries.

This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission, or SEC, utilizing a “shelf” registration process. Under this shelf process, we may, from time to time, sell up to 3,250,000 shares of our common stock in connection with the acquisition of various businesses in one or more offerings. This prospectus provides you with a general description of our common stock that we may offer. When we offer common stock under this prospectus, we may provide a prospectus supplement that will contain specific information about the terms of that offering. The prospectus supplement may also add, update or change information contained in this prospectus. You should read this prospectus and any applicable prospectus supplement together with additional information described under the heading “Where You Can Find More Information.”

You should rely only on the information contained or incorporated by reference in this prospectus and in any prospectus supplement. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not making offers to sell or solicitations to buy common stock in any jurisdiction in which an offer or solicitation is not authorized or in which the person making that offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make an offer or solicitation. You should not assume that the information in this prospectus or any prospectus supplement, as well as the information we previously filed with the SEC that we incorporate by reference in this prospectus or any prospectus supplement, is accurate as of any date other than its respective date. Our business, financial condition, results of operations and prospects may have changed since those dates.

This prospectus incorporates important business and financial information about us that is not included in or delivered with this prospectus. We will provide you without charge upon your request, a copy of any documents that we incorporate by reference, other than exhibits to those documents that are not specifically incorporated by reference into those documents. You may request a copy of a document by writing to Whiting Petroleum Corporation, 1700 Broadway, Suite 2300, Denver, Colorado 80290, Attention: Corporate Secretary, or by calling the Corporate Secretary at (303) 837-1661. To ensure timely delivery, you must request the information no later than five business days before you make your investment decision.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus and the documents incorporated by reference contain statements that we believe to be “forward looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. All statements other than historical facts, including, without limitation, statements regarding our future financial position, business strategy, projected revenues, earnings, costs, capital expenditures and debt levels, and plans and objectives of management for future operations, are forward looking statements. When used in this prospectus, words such as we “expect,” “intend,” “plan,” “estimate,” “anticipate,” “believe” or “should” or the negative thereof or variations thereon or similar terminology are generally intended to identify forward looking statements. Such forward looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in, or implied by, such statements. Some, but not all, of the risks and uncertainties include:

• declines in oil or natural gas prices;

• our level of success in exploitation, exploration, development and production activities;

• our ability to obtain external capital to finance acquisitions;

• our ability to identify and complete acquisitions and to successfully integrate acquired businesses, including our ability to realize cost savings from completed acquisitions;

• unforeseen underperformance of or liabilities associated with acquired properties;

• inaccuracies of our reserve estimates or our assumptions underlying them;

• failure of our properties to yield oil or natural gas in commercially viable quantities;

• uninsured or underinsured losses resulting from our oil and natural gas operations;

• our inability to access oil and natural gas markets due to market conditions or operational impediments;

• the impact and costs of compliance with laws and regulations governing our oil and natural gas operations;

• risks related to our level of indebtedness;

• our ability to replace our oil and natural gas reserves;

• any loss of our senior management or technical personnel;

• competition in the oil and natural gas industry;

• risks arising out of our hedging transactions; and

• other risks described in documents we incorporate by reference.

We assume no obligation, and disclaim any duty, to update the forward looking statements in this prospectus or in the documents we incorporate by reference.

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WHITING PETROLEUM CORPORATION

We are engaged in oil and natural gas exploitation, acquisition, exploration and production activities primarily in the Permian Basin, Rocky Mountains, Gulf Coast, Michigan, Mid-Continent and California regions of the United States. Our focus is on pursuing growth projects that we believe will generate attractive rates of return and maintaining a balanced portfolio of lower risk, long-lived oil and natural gas properties that provide stable cash flows. Since our inception in 1980, we have built a strong asset base and achieved steady growth through both property acquisitions and exploitation activities.

Our principal executive offices are located at 1700 Broadway, Suite 2300, Denver, Colorado 80290-2300, and our telephone number is (303) 837-1661.

USE OF PROCEEDS

This prospectus relates to common stock that we may offer from time to time in connection with the acquisition of various assets, businesses or securities. We will not receive any proceeds from these offerings other than the assets, businesses or securities acquired. When a selling shareholder uses this prospectus in a public reoffering or resale of shares of common stock acquired pursuant to this prospectus, we will not receive any proceeds from any such sale by a selling shareholder.

DESCRIPTION OF CAPITAL STOCK

General

The authorized capital stock of Whiting Petroleum Corporation consists of 75,000,000 shares of common stock, $0.001 par value per share and 5,000,000 shares of preferred stock, $0.001 par value per share.

The following description of our capital stock summarizes general terms and provisions that apply to our capital stock. Since this is only a summary it does not contain all of the information that may be important to you. The summary is subject to and qualified in its entirety by reference to our certificate of incorporation and our by-laws, which are filed as exhibits to the registration statement of which this prospectus is a part and incorporated by reference into this prospectus. See “Where You Can Find More Information.”

Common Stock

Holders of our common stock are entitled to one vote for each share held on all matters submitted to a vote of stockholders and do not have cumulative voting rights. Accordingly, holders of a majority of the shares of our common stock entitled to vote in any election of directors may elect all of the directors standing for election. Holders of our common stock are entitled to receive proportionately any dividends if and when such dividends are declared by our board of directors, subject to any preferential dividend rights of outstanding preferred stock. Upon the liquidation, dissolution or winding up of our company, the holders of our common stock are entitled to receive ratably our net assets available after the payment of all debts and other liabilities and subject to the prior rights of any outstanding preferred stock. Holders of our common stock have no preemptive, subscription, redemption or conversion rights. The rights, preferences and privileges of holders of our common stock are subject to, and may be adversely affected by, the rights of the holders of shares of any series of preferred stock that we may designate and issue in the future.

Preferred Stock

Under the terms of our certificate of incorporation, our board of directors is authorized to designate and issue shares of preferred stock in one or more series without stockholder approval. Our board of directors has discretion to determine the rights, preferences, privileges and restrictions, including voting rights, dividend rights, conversion rights, redemption privileges and liquidation preferences, of each series of preferred stock. It is not possible to state the actual effect of the issuance of any shares of preferred stock upon the rights of holders of our common stock until the board of directors determines the specific rights of the holders of the preferred stock. However, these effects might include:

• restricting dividends on the common stock;

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• diluting the voting power of the common stock;

• impairing the liquidation rights of the common stock; and

• delaying or preventing a change in control of our company.

We have no present plans to issue any shares of preferred stock.

Delaware Anti-Takeover Law and Charter and By-law Provisions

We are subject to the provisions of Section 203 of the Delaware General Corporation Law. In general, the statute prohibits a publicly held Delaware corporation from engaging in a “business combination” with an “interested stockholder” for a period of three years after the date of the transaction in which the person became an interested stockholder, unless the business combination or the transaction by which the person became an interested stockholder is approved by the corporation’s board of directors and/or stockholders in a prescribed manner or the person owns at least 85% of the corporation’s outstanding voting stock after giving effect to the transaction in which the person became an interested stockholder. The term “business combination” includes mergers, asset sales and other transactions resulting in a financial benefit to the interested stockholder. Subject to certain exceptions, an “interested stockholder” is a person who, together with affiliates and associates, owns, or within three years did own, 15% or more of the corporation’s voting stock. A Delaware corporation may “opt out” from the application of Section 203 through a provision in its certificate of incorporation or by-laws. We have not “opted out” from the application of Section 203.

Under our certificate of incorporation and by-laws, our board of directors is divided into three classes, with staggered terms of three years each. Each year the term of one class expires. Any vacancies on the board of directors may be filled only by a majority vote of the remaining directors. Our certificate of incorporation and by-laws also provide that any director may be removed from office, but only for cause and only by the affirmative vote of the holders of at least 70% of the voting power of our then outstanding capital stock entitled to vote generally in the election of directors.

Our certificate of incorporation prohibits stockholders from taking action by written consent without a meeting and provides that meetings of stockholders may be called only by our chairman of the board, our president or a majority of our board of directors. Our by-laws further provide that nominations for the election of directors and advance notice of other action to be taken at meetings of stockholders must be given in the manner provided in our by-laws, which contain detailed notice requirements relating to nominations and other action.

The foregoing provisions of our certificate of incorporation and by-laws and the provisions of Section 203 of the Delaware General Corporation Law could have the effect of delaying, deferring or preventing a change of control of our company.

Liability and Indemnification of Officers and Directors

Our certificate of incorporation provides that our directors will not be personally liable to us or our stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (1) for any breach of a director’s duty of loyalty to us or our stockholders, (2) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (3) under Section 174 of the Delaware General Corporation Law, or (4) for any transaction from which the director derives an improper personal benefit. Moreover, the provisions do not apply to claims against a director for violations of certain laws, including federal securities laws. If the Delaware General Corporation Law is amended to authorize the further elimination or limitation of directors’ liability, then the liability of our directors will automatically be limited to the fullest extent provided by law. Our certificate of incorporation and by-laws also contain provisions to indemnify our directors and officers to the fullest extent permitted by the Delaware General Corporation Law. In addition, we may enter into indemnification agreements with our directors and officers. These provisions and agreements may have the practical effect in certain cases of eliminating the ability of stockholders to collect monetary damages from our directors and officers. We believe that these contractual agreements and the provisions in our certificate of incorporation and by-laws are necessary to attract and retain qualified persons as directors and officers.

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Transfer Agent and Registrar

The transfer agent and registrar for our common stock is Computershare Trust Company, Inc.

PLAN OF DISTRIBUTION

This prospectus covers shares of common stock that we may issue from time to time in connection with acquisitions of businesses, assets or securities of other companies. In addition to the shares of common stock offered by this prospectus, we may offer other consideration, including stock options, cash, notes or other evidences of debt, assumption of liabilities or a combination of these types of consideration. In addition, we may lease property from, and enter into management agreements and consulting and noncompetition agreements with, the former owners and key executive personnel of the businesses to be acquired.

We expect the terms of acquisitions involving the issuance of the shares of common stock covered by this prospectus to be determined by direct negotiations between our representatives and the owners or controlling persons of the businesses, assets or securities to be acquired. Factors taken into account in acquisitions may include, among other factors, the quality and reputation of the business to be acquired and its management, the strategic market position of the business to be acquired, its proprietary assets, earning power, cash flow and growth potential, and the market value of its common stock when pertinent. The value of our shares of common stock issued in any such acquisition will be offered at prices based upon or reasonably related to the current market value of the common stock. The value will be determined either when the terms of the acquisition are tentatively or finally agreed to, when the acquisition is completed, when we issue the shares or during some other negotiated period. We do not expect to pay underwriting discounts or commissions, although we may pay finders’ fees from time to time in connection with certain acquisitions. Any person receiving finders’ fees may be deemed to be an “underwriter” within the meaning of the Securities Act of 1933, and any profit on the resale of securities purchased by them may be considered underwriting commissions or discounts under the Securities Act.

In an effort to maintain an orderly market in our securities or for other reasons, we may negotiate agreements with persons receiving common stock covered by this prospectus that will limit the number of shares that they may sell at specified intervals. These agreements may be more or less restrictive than restrictions on sales made under the exemption from registration requirements of the Securities Act, including the requirements under Rule 144 or Rule 145(d), and the persons party to these agreements may not otherwise be subject to the Securities Act requirements. We anticipate that, in general, negotiated agreements will be of limited duration and will permit the recipients of securities issued in connection with acquisitions to sell up to a specified number of shares per week or business day or days. We may also determine to waive any such agreements without public notice.

RESALES OF SHARES

In general, the persons to whom we issue common stock under this prospectus will be able to resell our common stock in the public market without further registration and without being required to deliver a prospectus. However, certain persons who receive our common stock may want to resell those shares in distributions that would require the delivery of a prospectus. With our consent, this prospectus may be used by selling shareholders who may wish to sell shares of common stock. As used in this prospectus, “selling shareholders” may include donees and pledgees selling securities received from a named selling shareholder. We may limit our consent to a specified time period and subject our consent to certain limitations and conditions, which may vary by agreement.

We will receive none of the proceeds from any sales by selling shareholders. Any commissions paid or concessions allowed to any broker-dealer, and, if any broker-dealer purchases such shares as principal, any profits received on the resale of such shares, may be deemed to be underwriting discounts and commissions under the Securities Act. We will pay printing, certain legal, filing and other similar expenses of this offering. Selling shareholders will bear all other expenses of this offering, including any brokerage fees, underwriting discounts or commissions and their own legal expenses.

Selling shareholders may sell the shares of common stock offered by this prospectus:

• through the New York Stock Exchange or any other securities exchange or quotation service that lists or quotes our common stock for trading;

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• in the over-the-counter market;

• in special offerings;

• in privately negotiated transactions;

• by or through brokers or dealers, in ordinary brokerage transactions or transactions in which the broker solicits purchases;

• in transactions in which a broker or dealer will attempt to sell shares as an agent but may position and resell a portion of the shares as principal;

• in transactions in which a broker or dealer purchases as principal for resale for its own account;

• through underwriters or agents; or

• in any combination of these methods.

Selling shareholders may sell their shares at market prices prevailing at the time of sale, at prices related to such prevailing market prices, at negotiated prices or at fixed prices. The transactions above may include block transactions.

Resales by selling shareholders may be made directly to investors or through securities firms acting as underwriters, brokers or dealers. When resales are to be made through a securities firm, the securities firm may be engaged to act as the selling shareholders’ agent in the resale of the shares by the selling shareholders, or the securities firm may purchase securities from the selling shareholders as principal and thereafter resell the securities from time to time. The fees earned by or paid to the securities firm may be the normal stock exchange commission or negotiated commissions or underwriting discounts to the extent permissible. The securities firm may resell the securities through other securities dealers, and commissions or concessions to those other dealers may be allowed. We and the selling shareholders may indemnify any securities firm participating in such transactions against certain liabilities, including liabilities under the Securities Act, and to reimburse them for any expenses in connection with an offering or sale of securities. We may also agree to indemnify the selling shareholders against any such liabilities or reimburse them for expenses. Profits, commissions and discounts on sales by persons who may be deemed to be underwriters within the meaning of the Securities Act may be deemed underwriting compensation under the Securities Act.

Selling shareholders may also offer shares of common stock covered by this prospectus by means of prospectuses under other registration statements or pursuant to exemptions from the registration requirements of the Securities Act, including sales that meet the requirements of Rule 144 or Rule 145(d) under the Securities Act. Selling shareholders should seek the advice of their own counsel about the legal requirements for such sales.

This prospectus will be amended or supplemented, if required by the Securities Act and the rules of the SEC, to disclose the name of the selling shareholder, the participating securities firm, if any, the number of shares of common stock involved and other information concerning the resale, including the terms of any distribution, including the names of any underwriters, brokers, dealers or agents and any discounts, commissions, concessions or other items constituting compensation. We may agree to keep the registration statement relating to the offering and sale by the selling shareholders of our securities continuously effective until a fixed date or the date on which the shares may be resold without registration under the Securities Act.

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WHERE YOU CAN FIND MORE INFORMATION

We file annual, quarterly and current reports, proxy statements and other information with the SEC. We also filed a registration statement on Form S-4, including exhibits, under the Securities Act of 1933 with respect to the common stock offered by this prospectus. This prospectus is a part of the registration statement, but does not contain all of the information included in the registration statement or the exhibits. You may read and copy the registration statement and any other document that we file at the SEC’s public reference room at 450 Fifth Street, N.W., Washington D.C. Please call the SEC at 1-800-SEC-0330 for further information on the operation of the public reference room. You can also find our public filings with the SEC on the internet at a web site maintained by the SEC located at http://www.sec.gov.

We are “incorporating by reference” specified documents that we file with the SEC, which means:

• incorporated documents are considered part of this prospectus;

• we are disclosing important information to you by referring you to those documents; and

• information we file with the SEC will automatically update and supersede information contained in this prospectus.

We incorporate by reference the documents listed below and any future filings we make with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934 after the date of this prospectus and before the end of the offering of the securities pursuant to this prospectus:

• our Annual Report on Form 10-K for the year ended December 31, 2003;

• our Quarterly Reports on Form 10-Q for the quarters ended March 31, 2004, June 30, 2004 and September 30, 2004;

• our Current Reports on Form 8-K, dated February 2, 2004, April 22, 2004, April 26, 2004, May 6, 2004, June 3, 2004, July 20, 2004, September 1, 2004, September 23, 2004 (as amended by Amendment No. 1 thereto on Form 8-K/A filed on October 18, 2004), October 26, 2004 and November 16, 2004; and

• the description of our common stock contained in our Registration Statement on Form 8-A, dated November 14, 2003, and any amendment or report updating that description.

You may request a copy of any of these filings, at no cost, by request directed to us at the following address or telephone number:

Whiting Petroleum Corporation

1700 Broadway, Suite 2300

Denver, Colorado 80290

(303) 837-1661

Attention: Corporate Secretary

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LEGAL MATTERS

The validity of the shares of common stock offered by this prospectus will be passed upon for us by Foley & Lardner LLP.

EXPERTS

The consolidated financial statements of Whiting Petroleum Corporation as of December 31, 2003 and 2002 and for each of the three years in the period ended December 31, 2003, incorporated in this prospectus by reference from our Annual Report on Form 10-K for the year ended December 31, 2003 have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report which is incorporated by reference herein (which report expresses an unqualified opinion and includes an explanatory paragraph referring to a change in Whiting Petroleum Corporation’s method of accounting for asset retirement obligations effective January 1, 2003), and have been so incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

The statements of revenues and direct operating expenses of the Permian Basin Acquisition Properties for each of the three years in the period ended December 31, 2003, incorporated in this prospectus by reference from Amendment No. 1 to our Current Report on Form 8-K dated September 23, 2004 have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their report, which is incorporated by reference herein, and have been so incorporated in reliance upon the report of such firm given upon their authority as experts in accounting and auditing.

Certain information with respect to our oil and natural gas reserves derived from the reports of Cawley Gillespie & Associates, Inc., R.A. Lenser & Associates, Inc. and Ryder Scott Company, L.P., each independent petroleum engineering consultants, has been incorporated in this registration statement by reference on the authority of said firms as experts in petroleum engineering.

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PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20. Indemnification of Directors and Officers.

Under the provisions of Section 145 of the Delaware General Corporation Law, the Registrant is required to indemnify any present or former officer or director against expenses arising out of legal proceedings in which the director or officer becomes involved by reason of being a director or officer if the director or officer is successful in the defense of such proceedings. Section 145 also provides that the Registrant may indemnify a director or officer in connection with a proceeding in which he is not successful in defending if it is determined that he acted in good faith and in a manner reasonably believed to be in or not opposed to the best interests of the Registrant or, in the case of a criminal action, if it is determined that he had no reasonable cause to believe his conduct was unlawful. Liabilities for which a director or officer may be indemnified include amounts paid in satisfaction of settlements, judgments, fines and other expenses (including attorneys’ fees incurred in connection with such proceedings). In a stockholder derivative action, no indemnification may be paid in respect of any claim, issue or matter as to which the director or officer has been adjudged to be liable to the Registrant (except for expenses allowed by a court).

The Registrant’s Amended and Restated Certificate of Incorporation provides for indemnification of directors and officers of the Registrant to the full extent permitted by applicable law. Under the provisions of the Registrant’s Amended and Restated By-laws, the Registrant is required to indemnify officers or directors to a greater extent than under the current provisions of Section 145 of the Delaware General Corporation Law. Except with respect to stockholder derivative actions, the By-law provisions generally state that the director or officer will be indemnified against expenses, amounts paid in settlement and judgments, fines, penalties and/or other amounts incurred with respect to any threatened, pending or completed proceeding, provided that (i) such person acted in good faith and in a manner such person reasonably believed to be in or not opposed to the best interests of the Registrant, and (ii) with respect to any criminal action or proceeding, such person had no reasonable cause to believe his or her conduct was unlawful.

The foregoing standards also apply with respect to the indemnification of expenses incurred in a stockholder derivative suit. However, a director or officer may only be indemnified for settlement amounts or judgments incurred in a derivative suit to the extent that the Court of Chancery or the court in which such action or suit was brought shall determine upon application that, despite the adjudication of liability but in view of all the circumstances of the case, such person is fairly and reasonably entitled to indemnity for such expenses which the Court of Chancery or such other court shall deem proper.

In accordance with the Delaware General Corporation Law, the Registrant’s Amended and Restated Certificate of Incorporation contains a provision to limit the personal liability of the directors of the Registrant for violations of their fiduciary duty. This provision eliminates each director’s liability to the Registrant or its stockholders, for monetary damages except (i) for breach of the director’s duty of loyalty to the Registrant or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law providing for liability of directors for unlawful payment of dividends or unlawful stock purchases or redemptions or (iv) for any transaction from which a director derived an improper personal benefit. The effect of this provision is to eliminate the personal liability of directors for monetary damages for actions involving a breach of their fiduciary duty of care, including any such actions involving gross negligence.

The Registrant maintains insurance policies that provide coverage to its directors and officers against certain liabilities.

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Item 21. Exhibits and Financial Statement Schedules.

(a) Exhibits. The exhibits listed in the accompanying exhibit index are filed (except where otherwise indicated) as part of this registration statement.

(b) Financial Statement Schedules. All schedules are omitted because they are not applicable or not required, or because the required information is shown in the consolidated financial statements or in the notes thereto.

(c) Reports, Opinions or Appraisals. Not applicable.

Item 22. Undertakings.

(a) The Registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this Registration Statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933;

(ii) To reflect in the prospectus any facts or events arising after the effective date of the Registration Statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the Registration Statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20% change in the maximum aggregate offering price set forth in the “Calculation of Registration Fee” table in the effective Registration Statement;

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the Registration Statement or any material change to such information in the Registration Statement;

provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) above do not apply if the information required to be included in a post-effective amendment by those paragraphs is contained in periodic reports filed by the Registrant pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 1934 that are incorporated by reference in the Registration Statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new Registration Statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(b) The Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each filing of the Registrant’s annual report pursuant to Section 13(a) or Section 15(d) of the Securities Exchange Act of 1934 that is incorporated by reference in the Registration Statement shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(c) The Registrant hereby undertakes as follows: that prior to any public reoffering of the securities registered hereunder through use of a prospectus which is a part of this Registration Statement, by any

II-2

person or party who is deemed to be an underwriter within the meaning of Rule 145(c), the issuer undertakes that such reoffering prospectus will contain the information called for by the applicable registration form with respect to reofferings by persons who may be deemed underwriters, in addition to the information called for by the other Items of Form S-4.

(d) The Registrant undertakes that every prospectus (i) that is filed pursuant to paragraph (c) immediately preceding, or (ii) that purports to meet the requirements of Section 10(a)(3) of the Securities Act and is used in connection with an offering of securities subject to Rule 415, will be filed as part of an amendment to the Registration Statement and will not be used until such amendment is effective, and that, for purposes of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(e) Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Registrant pursuant to the provisions set forth or described in Item 20 of this Registration Statement, or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Securities Act of 1933 and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Securities Act of 1933 and will be governed by the final adjudication of such issue.

(f) The Registrant hereby undertakes to respond to requests for information that is incorporated by reference into the prospectus pursuant to Items 4, 10(b), 11 or 13 of Form S-4, within one business day of receipt of such request, and to send the incorporated documents by first class mail or other equally prompt means. This includes information contained in documents filed subsequent to the effective date of the Registration Statement through the date of responding to the request.

(g) The Registrant hereby undertakes to supply by means of a post-effective amendment all information concerning a transaction, and the company being acquired involved therein, that was not the subject of and included in the Registration Statement when it became effective.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, the Registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Denver, State of Colorado, on December 23, 2004.

WHITING PETROLEUM CORPORATION
By:	/s/    JAMES J. VOLKER
	James J. Volker
	Chairman, President and Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/    JAMES J. VOLKER         James J. Volker	Chairman, President and Chief Executive Officer and Director (Principal Executive Officer)	December 23, 2004
/s/    JAMES R. CASPERSON         James R. Casperson	Chief Financial Officer (Principal Financial Officer)	December 23, 2004
/s/    MICHAEL J. STEVENS         Michael J. Stevens	Controller and Treasurer (Principal Accounting Officer)	December 23, 2004
* Thomas L. Aller	Director	December 23, 2004
* Graydon D. Hubbard	Director	December 23, 2004
* J.B. Ladd	Director	December 23, 2004
* Palmer L. Moe	Director	December 23, 2004
Kenneth R. Whiting	Director	December 23, 2004

By:	/s/    JAMES J. VOLKER
	James J. Volker
	Attorney-in-fact

S-1

EXHIBIT INDEX

Exhibit Number	Document Description
(3.1)	Amended and Restated Certificate of Incorporation of Whiting Petroleum Corporation [Incorporated by reference to Exhibit 3.1 to the Whiting Petroleum Corporation Registration Statement on Form S-1 (Reg. No. 333-107341)].
(3.2)	Amended and Restated By-laws of Whiting Petroleum Corporation [Incorporated by reference to Exhibit 3.2 to Whiting Petroleum Corporation’s Annual Report on Form 10-K for the fiscal year ended December 31, 2003 (File No. 001-31899)].
(4.1)	Second Amended and Restated Credit Agreement, dated as of September 23, 2004, among Whiting Oil and Gas Corporation, Whiting Petroleum Corporation, the financial institutions listed therein, and Bank One, NA, as Administrative Agent [Incorporated by reference to Exhibit 4 to Whiting Petroleum Corporation’s Current Report on Form 8-K dated September 23, 2004 (File No. 001-31899)].
(4.2)	Indenture, dated as of May 11, 2004, by and among Whiting Petroleum Corporation, Whiting Oil and Gas Corporation, Whiting Programs, Inc. and J.P. Morgan Trust Company, National Association [Incorporated by Reference to Exhibit 4.1 to Whiting Petroleum Corporation’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2004 (File No. 001-31899)].
(5)	Opinion of Foley & Lardner LLP (including consent of counsel).
(23.1)	Consent of Deloitte & Touche LLP.
(23.2)	Consent of Foley & Lardner LLP (filed as part of Exhibit (5)).
(23.3)	Consent of Cawley, Gillespie & Associates, Inc.
(23.4)	Consent of R.A. Lenser & Associates, Inc.
(23.5)	Consent of Ryder Scott Company, L.P.
(24)	Powers of attorney.

E-1

EX-5

Exhibit 5

FOLEY & LARDNER LLP ATTORNEYS AT LAW 777 EAST WISCONSIN AVENUE MILWAUKEE, WI 53202-5398 414.297.5700 TEL 414.297.4900 FAX www.foley.com CLIENT/MATTER NUMBER 038584-0112

December 23, 2004

Whiting Petroleum Corporation

1700 Broadway, Suite 2300

Denver, CO 80290

Ladies and Gentlemen:

We have acted as counsel for Whiting Petroleum Corporation, a Delaware corporation (the “Company”), in conjunction with the preparation of a Registration Statement on Form S-4 (the “Registration Statement”), including the prospectus constituting a part thereof (the “Prospectus”), to be filed by the Company with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Securities Act”), relating to the proposed issuance from time to time of up to 3,250,000 shares of the Company’s common stock, par value $.001 (the “Common Stock”), in the manner set forth in the Registration Statement.

In connection with our representation, we have examined: (i) the Registration Statement, including the Prospectus, and the exhibits (including those incorporated by reference) constituting a part of the Registration Statement; (ii) the Company’s Amended and Restated Certificate of Incorporation and Amended and Restated By-laws, each as amended to date; (iii) resolutions of the Company’s Board of Directors relating to the authorization of the issuance of the securities subject to the Registration Statement; and (iv) such other proceedings, documents and records as we have deemed necessary to enable us to render this opinion.

Based upon the foregoing, we are of the opinion that:

1. The Company is a corporation validly existing under the laws of the State of Delaware.

2. The shares of Common Stock covered by the Registration Statement when issued as described in the Registration Statement and Prospectus and pursuant to the definitive acquisition agreement applicable to such issuance, if any, will be validly issued, fully paid and nonassessable; provided that prior to issuance of such shares of Common Stock there shall be taken various actions or proceedings in the manner contemplated by us as counsel, which shall include the following:

a. the completion of the requisite procedures under the applicable provisions of the Securities Act and applicable state securities laws and regulations; and

BRUSSELS CHICAGO DETROIT JACKSONVILLE LOS ANGELES MADISON MILWAUKEE NEW YORK ORLANDO SACRAMENTO SAN DIEGO SAN DIEGO/DEL MAR SAN FRANCISCO SILICON VALLEY TALLAHASSEE TAMPA TOKYO WASHINGTON, D.C. WEST PALM BEACH

December 23, 2004

Page 2

b. to the extent we determine necessary under applicable agreements and/or the Company’s governing documents, the adoption of resolutions by the Company’s Board of Directors authorizing the issuance of any such shares.

We hereby consent to the reference to our firm under the caption “Legal Matters” in the Prospectus which is filed as part of the Registration Statement, and to the filing of this opinion as an exhibit to the Registration Statement. In giving our consent, we do not admit that we are “experts” within the meaning of Section 11 of the Securities Act or within the category of persons whose consent is required by Section 7 of the Securities Act.

Very truly yours,

/s/    Foley & Lardner LLP

EX-23.1

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement of Whiting Petroleum Corporation on Form S-4 of our report dated February 25, 2004 relating to the consolidated financial statements of Whiting Petroleum Corporation (which report expresses an unqualified opinion and includes an explanatory paragraph referring to a change in Whiting Petroleum Corporation’s method of accounting for asset retirement obligations), appearing in the Annual Report on Form 10-K of Whiting Petroleum Corporation for the year ended December 31, 2003.

We also consent to the incorporation by reference in this Registration Statement of Whiting Petroleum Corporation on Form S-4 of our report dated October 15, 2004 relating to the statements of revenues and direct operating expenses of the Permian Basin Acquisition Properties for the three years in the period ended December 31, 2003 appearing in the Current Report on Form 8-K/A of Whiting Petroleum Corporation dated September 23, 2004.

We also consent to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.

/s/    Deloitte & Touche LLP

Denver, Colorado

December 21, 2004

EX-23.3

Exhibit 23.3

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS

The undersigned hereby consents to the references to our firm in the form and context in which they appear in this Registration Statement on Form S-4 of Whiting Petroleum Corporation and the related prospectus that is a part thereof. We hereby further consent to the incorporation by reference in such Registration Statement and prospectus of (1) information contained in our report setting forth the estimates of revenues from Whiting Petroleum Corporation’s oil and gas reserves as of January 1, 2004 and (2) information contained in our report setting forth the estimates of revenues from oil and gas reserves as of July 1, 2004 for certain properties located in the Permian Basin acquired by Whiting Petroleum Corporation from CQ Acquisition Partners I, L.P., SPA-CQAP II, Enerquest Oil & Gas, Ltd. and Baytech, L.L.P.

Sincerely,

/s/    Cawley, Gillespie & Associates, Inc.

Cawley, Gillespie & Associates, Inc.

December 22, 2004

EX-23.4

Exhibit 23.4

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS

The undersigned hereby consents to the references to our firm in the form and context in which they appear in this Registration Statement on Form S-4 of Whiting Petroleum Corporation and the related prospectus that is a part thereof. We hereby further consent to the incorporation by reference in such Registration Statement and prospectus of information contained in our report setting forth the estimates of revenues from Whiting Petroleum Corporation’s oil and gas reserves as of January 1, 2004.

Very truly yours,

/s/    RONALD A. LENSER        

R.A. Lenser & Associates, Inc.

December 22, 2004

EX-23.5

Exhibit 23.5

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS

The undersigned hereby consents to the references to our firm in the form and context in which they appear in this Registration Statement on Form S-4 of Whiting Petroleum Corporation and the related prospectus that is a part thereof. We hereby further consent to the incorporation by reference in such Registration Statement and prospectus of (1) information contained in our report setting forth the estimates of revenues from Whiting Petroleum Corporation’s oil and gas reserves as of January 1, 2004 and (2) information contained in our report setting forth the estimates of revenues from Equity Oil Company’s oil and gas reserves as of December 31, 2003.

Very truly yours,

/s/    Ryder Scott Company, L.P.

Ryder Scott Company, L.P.

December 22, 2004

EX-24

Exhibit 24

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Thomas L. Aller

hereby constitute and appoint James J. Volker and James R. Casperson, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Whiting Petroleum Corporation (the “Company”) to the Registration Statement on Form S-4, any amendments (including post-effective amendments) or supplements thereto and any additional registration statement pursuant to Rule 462(b) of the Securities Act of 1933, as amended, relating to the issuance of common stock by the Company from time to time in connection with future acquisitions of other businesses, assets or securities of other companies, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 21st day of December, 2004.

/s/    THOMAS L. ALLER        

Thomas L. Aller

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Graydon D. Hubbard

hereby constitute and appoint James J. Volker and James R. Casperson, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Whiting Petroleum Corporation (the “Company”) to the Registration Statement on Form S-4, any amendments (including post-effective amendments) or supplements thereto and any additional registration statement pursuant to Rule 462(b) of the Securities Act of 1933, as amended, relating to the issuance of common stock by the Company from time to time in connection with future acquisitions of other businesses, assets or securities of other companies, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 21st day of December, 2004.

/s/    GRAYDON D. HUBBARD        

Graydon D. Hubbard

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

J. B. Ladd

hereby constitute and appoint James J. Volker and James R. Casperson, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Whiting Petroleum Corporation (the “Company”) to the Registration Statement on Form S-4, any amendments (including post-effective amendments) or supplements thereto and any additional registration statement pursuant to Rule 462(b) of the Securities Act of 1933, as amended, relating to the issuance of common stock by the Company from time to time in connection with future acquisitions of other businesses, assets or securities of other companies, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 21st day of December, 2004.

/s/    J. B. LADD        

J. B. Ladd

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, That I

Palmer L. Moe

hereby constitute and appoint James J. Volker and James R. Casperson, and each of them individually, my true and lawful attorney-in-fact and agent, with full power of substitution and resubstitution, for me and in my name, place and stead, in any and all capacities, to sign my name as a director of Whiting Petroleum Corporation (the “Company”) to the Registration Statement on Form S-4, any amendments (including post-effective amendments) or supplements thereto and any additional registration statement pursuant to Rule 462(b) of the Securities Act of 1933, as amended, relating to the issuance of common stock by the Company from time to time in connection with future acquisitions of other businesses, assets or securities of other companies, and to file the same, with all exhibits thereto, and other documents in connection therewith, with the Securities and Exchange Commission in connection with the registration of the above-referenced Securities under the Securities Act of 1933, as amended.

I hereby ratify and confirm all that said attorneys-in-fact and agents, or each of them, have done or shall lawfully do by virtue of this Power of Attorney.

WITNESS my hand this 21st day of December, 2004.

/s/    PALMER L. MOE        

Palmer L. Moe