Exhibit 99.2

KODIAK OIL & GAS CORP.

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET

AS OF SEPTEMBER 30, 2011

(amounts in thousands, except share data)

See accompanying notes to unaudited pro forma condensed consolidated financial statements

KODIAK OIL & GAS CORP.

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS

FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2011

(amounts in thousands, except share data)

See accompanying notes to unaudited pro forma condensed consolidated financial statements

KODIAK OIL & GAS CORP.

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1.           BASIS OF PRESENTATION

On September 27, 2011, Kodiak Oil & Gas Corp. and its subsidiary (the “Company” or the “Buyer”) entered into a definitive purchase and sale agreement (the “Agreement”), between BTA Oil Producers, LLC, a Texas limited liability company (the “Seller”) for its interests in approximately 13,400 net acres of Williston Basin leaseholds, and related producing properties located primarily in Williams County, North Dakota along with various other related rights, permits, contracts, equipment and other assets (the “Oil and Gas Properties Acquired”).  The aggregate purchase price for the Oil and Gas Properties was approximately $235.6 million, subject to purchase price adjustments calculated as of October 28, 2011 (“Closing Date”).  The effective date for the acquisition of the Oil and Gas Properties Acquired is August 1, 2011 (the “Effective Date”).

In conjunction with the closing of the acquisition, the Company amended and restated its Credit Agreement and its Second Lien Credit Agreement.  The borrowing base under the Amended and Restated Credit Agreement was increased from $110.0 million to $225.0 million and the initial commitment under the Amended and Restated Second Lien Credit Agreement was increased from $55.0 million to $100.0 million.  The Company used the initial cash deposit held in escrow of $17.7 million and the additional $45.0 million from the Amended and Restated Second Lien Credit Agreement and $185.5 million from its Amended and Restated Credit Agreement to close the acquisition of the Oil and Gas Properties Acquired.

The unaudited pro forma condensed balance sheet presents the acquisition of the Oil and Gas Properties Acquired as if the acquisition had occurred on September 30, 2011 and the pro forma unaudited statement of operations presents the acquisition as if it had occurred on January 1, 2010. The adjustments to the pro forma unaudited statement of operations also assumes the acquisition had occurred on January 1, 2010. These unaudited pro forma condensed consolidated financial statements are not necessarily indicative of the financial position or results of operations that would have occurred had the acquisition been effected on the assumed dates. Additionally, future results may vary significantly from the results reflected in the unaudited pro forma consolidated statement of operations due to normal production declines, changes in prices, future transactions, and other factors.

These unaudited pro forma condensed consolidated financial statements should be read in conjunction with our Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, our Annual Report on Form 10-K for the year ended December 31, 2010, and the Statement of Operating Revenues and Direct Operating Expenses of the Oil and Gas Properties Acquired by Kodiak Oil & Gas Corp. for the years ended December 31, 2010 and December 31, 2009 and the nine months ended September 30, 2011 (unaudited) and September 30, 2010 (unaudited).

The accompanying unaudited pro forma condensed consolidated financial statements give effect to the acquisition of the Oil and Gas Properties Acquired as if the acquisition and related financing had occurred as of September 30, 2011 for purposes of the pro forma balance sheet and as of January 1, 2010 for purposes of the pro forma statement of operations.  Additionally, the Company records acquisition costs to general and administrative expenses.  Acquisition costs of approximately $100,000 were incurred through September 30, 2011.

The following purchase price allocation is preliminary and includes significant use of estimates. This preliminary allocation is based on information that was available to management at the time these financial statements were prepared. Management has not yet had the opportunity to complete its assessment of the fair values of the assets acquired and liabilities assumed. Accordingly, the allocation will change as additional information becomes available and is assessed by the Company, and the impact of such changes may be material.

KODIAK OIL & GAS CORP.

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following table summarizes the preliminary purchase price and preliminary estimated values of assets acquired and liabilities assumed (in thousands):

2.           PRO FORMA ADJUSTMENTS TO THE CONDENSED CONSOLIDATED BALANCE SHEET

a. Record the pro forma allocation of the preliminary purchase price of the acquisition to the acquired assets and liabilities based on the initial fair values, pending completion of the Company’s valuation analysis;

b. Record cash utilized for origination fees and related loan closing costs with increasing and amending the existing credit facility and record the related asset of $4.1 million;

c. To record cash released from escrow that was credited to the purchase price at the closing of the acquisition of $17.7 million;

d. Record estimated acquisition costs (attorney, accountant and consulting fees) of $200,000.  Acquisition costs incurred through September 30, 2011 were approximately $100,000 and are recorded in the statement of operations within the general and administrative expenses line item of Kodiak Oil and Gas Historical;

e. Record long term finance utilization consisting of the credit facilities of $230.5 million;

f. Record asset retirement obligations assumed to preliminary estimate of fair value.

KODIAK OIL & GAS CORP.

NOTES TO UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

3.           PRO FORMA ADJUSTMENTS TO THE CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS

a. Operating revenues and direct operating expenses of the Oil and Gas Properties Acquired for the nine months ended September 30, 2011;

b. Record additional depletion, depreciation, amortization and accretion expense attributable to the preliminary purchase price allocation;

c. Record incremental interest expense on acquisition financing, using its amended and restated Credit Agreement and its Second Lien Credit Agreement.  Borrowings of $185.5 million were utilized on the amended and restated Credit Agreement and $45.0 million on the Second Lien Credit Agreement using their interest rates of 3.00% and 9.50%, respectively.   Additionally, to record amortization expense of the origination fees and related closing costs associated with obtaining financing for the acquisition.  Interest expense of $7.1 million was capitalized and amortization expense of $800,000 was recorded.