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SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549



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Form 10-Q/A

Amendment No. 1



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(Mark One)

|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------



FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2005



OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | -----------------------------------------------------------------------------------------



FOR THE TRANSITION PERIOD FROM  TO



Commission file number: 001-14837



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Quicksilver Resources Inc.

(Exact name of registrant as specified in its charter)



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|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Delaware                                                       |  | 75-2756163                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)



777 West Rosedale,
Suite 300, Fort Worth, Texas 76104

(Address of principal executive offices) (Zip Code)



(817) 665-5000

(Registrants telephone number, including area code)



None

(Former name, former address
and former fiscal year, if changed since last report)



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Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities
Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90
days.    Yes  x    No ̈



Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule
12b-2 of the Exchange Act).    Yes  x    No ̈



As of April 29, 2005, the registrant had 50,537,907 outstanding shares
of its common stock, $0.01 par value.



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EXPLANATORY NOTE



This Amendment No. 1 on Form 10-Q/A amends our Quarterly Report on Form 10-Q filed on May 10, 2005 for the quarter ended
March 31, 2005. We are filing this Amendment to correct the classification of certain amounts presented in the Condensed Consolidated Statements of Cash Flows in the original Form 10-Q. A description of these reclassifications is provided in Note 1
to the Condensed Consolidated Financial Statements. These reclassifications affect only respective amounts in the Condensed Consolidated Statements of Cash Flows of accounts payable, accrued liabilities and other, purchase of property, plant and
equipment and related totals of operating activities and investing activities and do not affect the Condensed Consolidated Balance Sheets or Statements of Income and Comprehensive Income.



This Amendment includes corresponding changes in Items 1 and 2 of Part I to our original Form 10-Q. All other portions of
the original Form 10-Q remain unchanged.



PART I. FINANCIAL
INFORMATION



Item 1. Financial Statements (Unaudited)



REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM



To the Board of Directors and Stockholders of

Quicksilver Resources Inc.

Fort Worth, Texas



We have reviewed the accompanying condensed consolidated balance sheet of Quicksilver
Resources Inc. and subsidiaries (the Company) as of March 31, 2005, and the related condensed consolidated statements of income and comprehensive income and of cash flows for the three month periods ended March 31, 2005 and 2004. These interim
financial statements are the responsibility of the Companys management.



We conducted our reviews in accordance with standards of the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical procedures and making inquiries of
persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with standards of the Public Company Accounting Oversight Board (United States), the objective of which is the
expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.



Based on our reviews, we are not aware of any material modifications that should be made to such condensed consolidated interim financial statements for them to be in
conformity with accounting principles generally accepted in the United States of America.



We have previously audited, in accordance with standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheet of Quicksilver Resources Inc. and subsidiaries as of December
31, 2004, and the related consolidated statements of income and comprehensive income, stockholders equity and cash flows for the year then ended (not presented herein); and in our report dated March 16, 2005 (August 8, 2005 as to the effects
of certain reclassifications), we expressed an unqualified opinion on those consolidated financial statements. Our report on those statements referred to a change in accounting for asset retirement obligations in 2003. In our opinion, the
information set forth in the accompanying condensed consolidated balance sheet as of December 31, 2004, is fairly stated, in all material respects, in relation to the consolidated balance sheet from which it has been derived.



/s/ DELOITTE & TOUCHE LLP



Fort Worth, Texas

May 10, 2005 (August
8, 2005 as to the effects of the reclassifications described in the fourth paragraph of Note 1)





2



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QUICKSILVER RESOURCES INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

In thousands, except for share data
 Unaudited



|                                                                                                                   |  |                |         |   |                   |   |         |  
|------------------------------------------------------------------------------------------------------------------ |  | -------------- | ------- | - | ----------------- | - | ------- | -
|                                                                                                                   |  | March 31, 2005 |         |   | December 31, 2004 |  
|ASSETS                                                                                                             |  |                |         |   |                   |   |         |  
|Current assets                                                                                                     |  |                |         |   |                   |   |         |  
|Cash and cash equivalents                                                                                          |  | $              | 7,359   |   |                   | $ | 15,947  |  
|Accounts receivable                                                                                                |  |                | 41,481  |   |                   |   | 38,037  |  
|Current deferred income taxes                                                                                      |  |                | 5,253   |   |                   |   | 3,523   |  
|Inventories and other current assets                                                                               |  |                | 7,785   |   |                   |   | 8,689   |  
|                                                                                                                   |  |                |         |   |                   |   |         |  
|Total current assets                                                                                               |  |                | 61,878  |   |                   |   | 66,196  |  
|                                                                                                                   |  |               
|Investments in and advances to equity affiliates                                                                   |  |                | 8,290   |   |                   |   | 8,254   |  
|                                                                                                                   |  |               
|Property, plant and equipment  net (full cost)                                                                  |  |                | 844,527 |   |                   |   | 802,610 |  
|                                                                                                                   |  |               
|Other assets                                                                                                       |  |                | 9,323   |   |                   |   | 11,274  |  
|                                                                                                                   |  |                |         |   |                   |   |         |  
|                                                                                                                   |  | $              | 924,018 |   |                   | $ | 888,334 |  
|                                                                                                                   |  |                |         |   |                   |   |         |  
|LIABILITIES AND STOCKHOLDERS EQUITY                                                                               |  |                |         |   |                   |   |         |  
|Current liabilities                                                                                                |  |                |         |   |                   |   |         |  
|Current portion of long-term debt                                                                                  |  | $              | 356     |   |                   | $ | 356     |  
|Accounts payable                                                                                                   |  |                | 25,901  |   |                   |   | 28,407  |  
|Accrued derivative obligations                                                                                     |  |                | 14,491  |   |                   |   | 12,784  |  
|Accrued liabilities                                                                                                |  |                | 40,498  |   |                   |   | 41,904  |  
|                                                                                                                   |  |                |         |   |                   |   |         |  
|Total current liabilities                                                                                          |  |                | 81,246  |   |                   |   | 83,451  |  
|                                                                                                                   |  |               
|Long-term debt                                                                                                     |  |                | 425,052 |   |                   |   | 399,134 |  
|                                                                                                                   |  |               
|Derivative obligations                                                                                             |  |                | 737     |   |                   |   |        |  
|                                                                                                                   |  |               
|Asset retirement obligations                                                                                       |  |                | 18,391  |   |                   |   | 17,967  |  
|                                                                                                                   |  |               
|Deferred income taxes                                                                                              |  |                | 82,229  |   |                   |   | 83,506  |  
|Stockholders equity                                                                                               |  |                |         |   |                   |   |         |  
|Preferred stock, $0.01 par value, 10,000,000 shares authorized, 1 share issued and outstanding                     |  |                |        |   |                   |   |        |  
|Common stock, $0.01 par value, 100,000,000 shares authorized 53,091,604 and 52,690,971 shares issued, respectively |  |                | 531     |   |                   |   | 527     |  
|Paid in capital in excess of par value                                                                             |  |                | 208,675 |   |                   |   | 200,941 |  
|Deferred compensation                                                                                              |  |                | (1,666  | ) |                   |   |        |  
|Treasury stock of 2,568,611 shares                                                                                 |  |                | (10,258 | ) |                   |   | (10,258 | )
|Accumulated other comprehensive income                                                                             |  |                | 2,023   |   |                   |   | 6,762   |  
|Retained earnings                                                                                                  |  |                | 117,058 |   |                   |   | 106,304 |  
|                                                                                                                   |  |                |         |   |                   |   |         |  
|Total stockholders equity                                                                                         |  |                | 316,363 |   |                   |   | 304,276 |  
|                                                                                                                   |  |                |         |   |                   |   |         |  
|                                                                                                                   |  | $              | 924,018 |   |                   | $ | 888,334 |  
|                                                                                                                   |  |                |         |   |                   |   |         |  



The accompanying notes
are an integral part of these condensed consolidated interim financial statements.



3



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QUICKSILVER RESOURCES INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME

In
thousands, except for per share data  Unaudited



|                                                  |  |                                      |         |   |         |   |        |  
|------------------------------------------------- |  | ------------------------------------ | ------- | - | ------- | - | ------ | -
|                                                  |  | For the Three Months Ended March 31, |        
|                                                  |  | 2005                                 |         |   | 2004(1) |  
|Revenues                                          |  |                                      |         |   |         |   |        |  
|Oil, gas and related product sales                |  | $                                    | 54,840  |   |         | $ | 39,124 |  
|Other revenue                                     |  |                                      | 409     |   |         |   | 653    |  
|                                                  |  |                                      |         |   |         |   |        |  
|Total revenues                                    |  |                                      | 55,249  |   |         |   | 39,777 |  
|Expenses                                          |  |                                      |         |   |         |   |        |  
|Oil and gas production costs                      |  |                                      | 19,654  |   |         |   | 16,005 |  
|Other operating costs                             |  |                                      | 391     |   |         |   | 290    |  
|Depletion, depreciation and accretion             |  |                                      | 12,372  |   |         |   | 9,105  |  
|General and administrative                        |  |                                      | 3,113   |   |         |   | 2,656  |  
|                                                  |  |                                      |         |   |         |   |        |  
|Total expenses                                    |  |                                      | 35,530  |   |         |   | 28,056 |  
|                                                  |  |                                      |         |   |         |   |        |  
|Income from equity affiliates                     |  |                                      | 224     |   |         |   | 291    |  
|                                                  |  |                                      |         |   |         |   |        |  
|Operating income                                  |  |                                      | 19,943  |   |         |   | 12,012 |  
|                                                  |  |                                     
|Other income  net                                |  |                                      | (86     | ) |         |   | (70    | )
|Interest expense                                  |  |                                      | 4,657   |   |         |   | 3,412  |  
|                                                  |  |                                      |         |   |         |   |        |  
|Income before income taxes                        |  |                                      | 15,372  |   |         |   | 8,670  |  
|Income tax expense                                |  |                                      | 4,618   |   |         |   | 2,733  |  
|                                                  |  |                                      |         |   |         |   |        |  
|Net income                                        |  | $                                    | 10,754  |   |         | $ | 5,937  |  
|                                                  |  |                                      |         |   |         |   |        |  
|Other comprehensive income  net of taxes         |  |                                      |         |   |         |   |        |  
|Reclassification adjustments  hedge settlements  |  |                                      | 6,233   |   |         |   | 6,612  |  
|Change in derivative fair value                   |  |                                      | (10,292 | ) |         |   | (7,480 | )
|Change in foreign currency translation adjustment |  |                                      | (680    | ) |         |   | (1,037 | )
|                                                  |  |                                      |         |   |         |   |        |  
|Comprehensive income                              |  | $                                    | 6,015   |   |         | $ | 4,032  |  
|                                                  |  |                                      |         |   |         |   |        |  
|Basic net income per common share                 |  | $                                    | 0.21    |   |         | $ | 0.12   |  
|Diluted net income per common share               |  | $                                    | 0.20    |   |         | $ | 0.12   |  
|                                                  |  |                                     
|Basic weighted average shares outstanding         |  |                                      | 50,346  |   |         |   | 49,601 |  
|Diluted weighted average shares outstanding       |  |                                      | 54,694  |   |         |   | 50,508 |  

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|(1) | Share and per share amounts have been adjusted to reflect a two-for-one stock split effected in the form of a stock dividend in June 2004. The split did not affect treasury shares.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



The accompanying notes are an integral part of these condensed
consolidated interim financial statements.



4



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QUICKSILVER RESOURCES INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

In thousands  Unaudited



|                                                                                   |  |                                      |         |   |      |   |         |  
|---------------------------------------------------------------------------------- |  | ------------------------------------ | ------- | - | ---- | - | ------- | -
|                                                                                   |  | For the Three Months Ended March 31, |        
|                                                                                   |  | 2005                                 |         |   | 2004 |  
|Operating activities:                                                              |  |                                      |         |   |      |   |         |  
|Net income                                                                         |  | $                                    | 10,754  |   |      | $ | 5,937   |  
|Charges and credits to net income not affecting cash                               |  |                                      |         |   |      |   |         |  
|Depletion, depreciation and accretion                                              |  |                                      | 12,372  |   |      |   | 9,105   |  
|Deferred income taxes                                                              |  |                                      | 4,482   |   |      |   | 2,686   |  
|Income from equity affiliates                                                      |  |                                      | (224    | ) |      |   | (291    | )
|Non-cash gain from hedging activities                                              |  |                                      | (212    | ) |      |   | (155    | )
|Non-cash compensation                                                              |  |                                      | 80      |   |      |   |        |  
|Amortization of deferred loan costs                                                |  |                                      | 344     |   |      |   | 308     |  
|Other                                                                              |  |                                      | (13     | ) |      |   |        |  
|Changes in assets and liabilities, net of acquisition                              |  |                                      |         |   |      |   |         |  
|Accounts receivable                                                                |  |                                      | (3,444  | ) |      |   | 7,658   |  
|Inventory, prepaid expenses and other                                              |  |                                      | (1,434  | ) |      |   | 716     |  
|Accounts payable                                                                   |  |                                      | 391     |   |      |   | 1,338   |  
|Accrued liabilities and other                                                      |  |                                      | (1,102  | ) |      |   | (6,352  | )
|                                                                                   |  |                                      |         |   |      |   |         |  
|Net cash from operating activities                                                 |  |                                      | 21,994  |   |      |   | 20,950  |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Investing activities:                                                              |  |                                      |         |   |      |   |         |  
|Purchase of property, plant and equipment                                          |  |                                      | (60,322 | ) |      |   | (45,734 | )
|Distributions and advances from equity affiliates  net                            |  |                                      | 188     |   |      |   | 205     |  
|Proceeds from sales of properties                                                  |  |                                      | 1,107   |   |      |   |        |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Net cash used for investing activities                                             |  |                                      | (59,027 | ) |      |   | (45,529 | )
|                                                                                   |  |                                      |         |   |      |   |         |  
|Financing activities:                                                              |  |                                      |         |   |      |   |         |  
|Issuance of debt                                                                   |  |                                      | 27,761  |   |      |   | 25,000  |  
|Repayments of debt                                                                 |  |                                      | (78     | ) |      |   | (75     | )
|Deferred financing costs                                                           |  |                                      | (18     | ) |      |   |        |  
|Proceeds from exercise of stock options                                            |  |                                      | 1,132   |   |      |   | 471     |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Net cash from financing activities                                                 |  |                                      | 28,797  |   |      |   | 25,396  |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Effect of exchange rates on cash                                                   |  |                                      | (352    | ) |      |   | 42      |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Net increase (decrease) in cash and cash equivalents                               |  |                                      | (8,588  | ) |      |   | 859     |  
|Cash and cash equivalents at beginning of period                                   |  |                                      | 15,947  |   |      |   | 4,116   |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Cash and cash equivalents at end of period                                         |  | $                                    | 7,359   |   |      | $ | 4,975   |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:                                 |  |                                      |         |   |      |   |         |  
|Interest paid                                                                      |  | $                                    | 4,234   |   |      | $ | 3,240   |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|Income taxes paid                                                                  |  | $                                    | 815     |   |      | $ |        |  
|                                                                                   |  |                                      |         |   |      |   |         |  
|NONCASH INVESTING ACTIVITIES:                                                      |  |                                      |         |   |      |   |         |  
|Changes in working capital related to acquisition of property, plant and equipment |  | $                                    | 3,214   |   |      | $ | 5,817   |  
|                                                                                   |  |                                      |         |   |      |   |         |  



The accompanying notes are an integral
part of these condensed consolidated interim financial statements.



5



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QUICKSILVER RESOURCES INC.

NOTES TO CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS



1. ACCOUNTING POLICIES AND DISCLOSURES



The accompanying condensed consolidated interim financial statements of Quicksilver Resources Inc. (Quicksilver or the Company) have not been
audited by independent public accountants. In the opinion of Company management, the accompanying condensed consolidated interim financial statements contain all adjustments necessary to present fairly the financial position of the Company as of
March 31, 2005 and its income, comprehensive income and cash flows for the three month periods ended March 31, 2005 and 2004. All such adjustments are of a normal recurring nature. Certain amounts presented in prior period financial statements have
been reclassified for consistency with current period presentation. The results for interim periods are not necessarily indicative of annual results.



The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates
and assumptions that affect the reported amounts of certain assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during each reporting
period. Management believes its estimates and assumptions are reasonable; however, such estimates and assumptions are subject to a number of risks and uncertainties, which may cause actual results to differ materially from the Companys
estimates.



Certain disclosures normally included in financial statements
prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted. Accordingly, these financial statements should be read in conjunction with the consolidated financial statements and
notes thereto included in the Companys Form 10-K/A for the year ended December 31, 2004.



Reclassification



Subsequent to the
issuance of the March 31, 2005 Form 10-Q, the Company determined that certain of its liabilities associated with the acquisition of property, plant, and equipment were incorrectly reflected as cash inflows for operating activities and cash outflows
for investing activities. Management has concluded that the misclassification was not material to the condensed consolidated financial statements, and accordingly the cash flow statements for the three months ended March 31, 2005 and 2004 have been
corrected by increasing net cash from operating activities and net cash used for investing activities by $3.2 million and $5.8 million, respectively, and disclosing noncash investing activities of the same amounts.



Stock Split



On June 1, 2004, Quicksilver announced that its Board of Directors declared a two-for-one stock split of Quicksilvers outstanding
common stock effected in the form of a stock dividend. The stock dividend was payable on June 30, 2004, to holders of record at the close of business on June 15, 2004. The split did not affect treasury shares.



The share and earnings per share data included in these notes and the accompanying condensed
consolidated financial statements for all periods presented have been adjusted to retroactively reflect the stock split.



Net Income per Common Share



Basic net income or loss per common share is computed by dividing the net income or loss attributable to common stockholders by the weighted average number of shares of
common stock outstanding during the period. Diluted net income or loss per common share is computed using the treasury stock method, which considers the impact to net income and common shares from the potential issuance of common shares underlying
stock options, stock warrants and outstanding convertible securities. The following is a reconciliation of the weighted average common shares used in the basic and diluted net income per common share calculations for the three-month periods ended
March 31, 2005 and 2004. Outstanding options to purchase 1,637 shares were excluded from the diluted net income per share calculation for the period ended March 31, 2005 as those options were out of the money and, therefore, considered to be
antidilutive.



6



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|                                                                                                            |  |                              |        |      |   |       
|----------------------------------------------------------------------------------------------------------- |  | ---------------------------- | ------ | ---- | - | ------
|                                                                                                            |  | Three Months Ended March 31,
|                                                                                                            |  | 2005                         |        | 2004
|                                                                                                            |  | (in thousands)              
|Net income                                                                                                  |  | $                            | 10,754 |      | $ | 5,937 
|Impact of assumed conversions  interest on 1.875% contingently convertible debentures, net of income taxes |  |                              | 475    |      |   |      
|                                                                                                            |  |                              |        |      |   |       
|Income available to stockholders assuming conversion of contingently convertible debentures                 |  | $                            | 11,229 |      | $ | 5,937 
|                                                                                                            |  |                              |        |      |   |       
|Weighted average common shares-basic                                                                        |  |                              | 50,346 |      |   | 49,601
|                                                                                                            |  |                             
|Effect of dilutive securities:                                                                              |  |                              |        |      |   |       
|Stock options outstanding                                                                                   |  |                              | 1,076  |      |   | 907   
|Contingently convertible debentures                                                                         |  |                              | 3,272  |      |   |      
|                                                                                                            |  |                              |        |      |   |       
|Weighted average common shares-diluted                                                                      |  |                              | 54,694 |      |   | 50,508
|                                                                                                            |  |                              |        |      |   |       
|Basic income per common share                                                                               |  | $                            | 0.21   |      | $ | 0.12  
|                                                                                                            |  |                             
|Diluted income per common share                                                                             |  | $                            | 0.20   |      | $ | 0.12  



Recently Issued Accounting
Standards



In December 2004, the Financial Accounting Standards Boards
(FASB) issued Statement of Financial Accounting Standards (SFAS) No. 123(R), Share-Based Payment, which establishes accounting standards for all transactions in which an entity exchanges its equity instruments for
goods and services. SFAS No. 123(R) focuses primarily on accounting for transactions with employees, and carries forward without change prior guidance for shared-based payments for transactions with non-employees.



SFAS No. 123(R) eliminates the intrinsic value measurement objective in Accounting Principle
Board (APB) Opinion 25 and generally requires measurement of the cost of employee services received in exchange for an award of equity instruments be based on the fair value of the award on the date of the grant. The standard requires
grant date fair value to be estimated using either an option-pricing model that is consistent with the terms of the award or a market observed price, if such a price exists. Such cost must be recognized over the period during which an employee is
required to provide service in exchange for the award (which is usually the vesting period). The standard also requires estimation of the number of instruments that will ultimately be issued rather than accounting for forfeitures as they occur.



SFAS No. 123(R) was to apply to all awards granted, modified or settled in our
first reporting period under U.S. GAAP after June 15, 2005; however the SEC deferred required application of SFAS No. 123(R) until the first fiscal interim or annual reporting period of the first fiscal year beginning on or after June 15, 2005. The
standard requires use of either the modified prospective method or the modified retrospective method. Under the modified prospective method, compensation cost is recognized for all awards granted after adoption of the
standard and for the unvested portion of previous grant awards that are outstanding on that date. The modified retrospective method is used to recognize compensation cost for prior periods whereby previously issued financial statements must be
restated to recognize the amounts we previously calculated and reported on a pro forma basis. Under both methods, the standard permits the use of either a straight-line or an accelerated method to amortize the cost as an expense for awards that vest
over time. The standard permits and encourages early adoption.



Management has
commenced analysis of the impact of this statement, but has not yet decided: (1) whether to elect early adoption, (2) if early adoption is elected, at what date to adopt the standard, (3) whether to use the modified prospective method or elect to
use the modified retrospective method, and (4) whether to use straight-line amortization or an accelerated method. Additionally management cannot predict with reasonable certainty the number of options that will be unvested and outstanding on
December 31, 2005. Accordingly, the effect of this standard would have on the Companys financial position or results of operations in the future cannot be currently quantified with precision, except that a greater expense will probably be
recognized for any awards granted in the future.



7



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The FASB issued FASB Interpretation No. 47 (FIN 47), Accounting for Conditional Asset Retirement
Obligations, in March 2005. FIN 47 clarifies that the term conditional asset retirement obligation as used is SFAS No. 143, Accounting for Retirement Obligations, refers to a legal obligation to perform an asset retirement
activity in which the timing and (or) method of settlement are conditional on a future event that may or may not be within the control of the entity. Under FIN 47, the fair value of a liability for a conditional asset retirement obligation should be
recognized when incurred. SFAS No. 143 notes that in some cases, sufficient information may not be available to reasonably estimate the fair value of the asset retirement obligation. FIN 47 also clarifies when an entity would have sufficient
information to reasonably estimate the fair value of an asset retirement obligation. Management is analyzing FIN 47 and believes there will not be any significant impact on the financial position, results of operations or cash flows of the Company.



In September 2004, the SEC issued Staff Accounting Bulletin No. 106. This
pronouncement requires companies that use the full cost method of accounting for oil and gas producing activities to include an estimate of future asset retirement costs to be incurred as a result of future development activities on proved reserves
in their calculation of depreciation, depletion and amortization. It also requires full cost companies to exclude any cash outflows associated with settling asset retirement obligations from their full cost ceiling test calculation. In addition, it
requires specific disclosures regarding the impact of asset retirement obligations on oil and gas producing activities, ceiling test calculations and depreciation, depletion and amortization calculations. The Company adopted the provisions of this
pronouncement in the first quarter of 2005. There has been no effect on the Companys consolidated financial statements.



2. ASSET RETIREMENT OBLIGATIONS



The Company records the fair value of the liability for asset retirement obligations in the period in which it is incurred. Upon initial recognition of the asset
retirement liability, an asset retirement cost is capitalized by increasing the carrying amount of the long-lived asset by the same amount as the liability. In periods subsequent to initial measurement, the asset retirement cost is allocated to
expense using a systematic method over the assets useful life. Changes in the liability for the asset retirement obligation are recognized for (a) the passage of time and (b) revisions to either the timing or the amount of the original
estimate of undiscounted cash flows.



During the three-month periods ended
March 31, 2005 and 2004, accretion expense was recognized and included in depletion, depreciation and accretion expense reported in the statement of income for the period. There have not been any revisions to either the timing or the amount of the
original estimate of undiscounted cash flows during 2005. At March 31, 2005 and December 31, 2004, retirement obligations classified as current were $0.5 million.



The following table provides a reconciliation of the changes in the estimated asset retirement obligation for the three-month periods ended
March 31, 2005 and 2004.



|                                      |  |                              |        |   |      |   |        |  
|------------------------------------- |  | ---------------------------- | ------ | - | ---- | - | ------ | -
|                                      |  | Three Months Ended March 31, |       
|                                      |  | 2005                         |        |   | 2004 |  
|                                      |  | (in thousands)               |       
|Beginning asset retirement obligation |  | $                            | 18,471 |   |      | $ | 15,189 |  
|Additional liability incurred         |  |                              | 202    |   |      |   | 193    |  
|Accretion expense                     |  |                              | 271    |   |      |   | 225    |  
|Asset retirement costs incurred       |  |                              | (13    | ) |      |   | (57    | )
|Gain on settlement of liability       |  |                              | 7      |   |      |   |       |  
|Currency translation adjustment       |  |                              | (43    | ) |      |   | (14    | )
|                                      |  |                              |        |   |      |   |        |  
|Ending asset retirement obligation    |  | $                            | 18,895 |   |      | $ | 15,536 |  
|                                      |  |                              |        |   |      |   |        |  



8



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3. HEDGING



The estimated fair values of all hedge derivatives and the associated fixed price firm sale and purchase commitments as of March 31, 2005 and December 31, 2004 are
provided below. The associated carrying values of these financial instruments and firm commitments are equal to the estimated fair values for each period presented.



|                                           |  |                |        |                   |   |       
|------------------------------------------ |  | -------------- | ------ | ----------------- | - | ------
|                                           |  | March 31, 2005 |        | December 31, 2004
|                                           |  | (in thousands)
|Derivative assets:                         |  |                |        |                   |   |       
|Fixed price sale commitments               |  | $              |       |                   | $ | 314   
|Natural gas financial collars              |  |                |       |                   |   | 3,563 
|Crude oil financial collars                |  |                |       |                   |   | 106   
|                                           |  |                |        |                   |   |       
|                                           |  | $              |       |                   | $ | 3,983 
|                                           |  |                |        |                   |   |       
|Derivative liabilities:                    |  |                |        |                   |   |       
|Fixed price natural gas financial swaps    |  | $              | 5,391  |                   | $ | 12,066
|Floating price natural gas financial swaps |  |                |       |                   |   | 322   
|Natural gas financial collars              |  |                | 8,442  |                   |   | 158   
|Crude oil financial collars                |  |                | 1,395  |                   |   | 5     
|Floating to fixed interest rate swap       |  |                |       |                   |   | 233   
|                                           |  |                |        |                   |   |       
|                                           |  | $              | 15,228 |                   | $ | 12,784
|                                           |  |                |        |                   |   |       



The fair values of all natural gas and
crude oil financial instruments and firm sale and purchase commitments as of March 31, 2005 and December 31, 2004 were estimated based on market prices of natural gas and crude oil for the periods covered by the hedge derivatives. The net
differential between the contractual prices in each hedge derivative and commitment and market prices for future periods, as adjusted for estimated basis, has been applied to the volumes stipulated in each contract to arrive at an estimated future
value. This estimated future value was discounted on each contract at rates commensurate with federal treasury instruments with similar contractual lives. As a result, the fair value of the Companys hedge derivatives and commitments does not
necessarily represent the value a third party would pay to assume the Companys contract positions.



At March 31, 2005, derivative liabilities of $14.5 million have been classified as current based on the maturity of the derivative instruments. The Company estimates $9.2 million of after-tax losses will be
reclassified from other comprehensive income over the next twelve months.



4. LONG-TERM DEBT



Long-term debt consists of:



|                                                                 |  |                |         |   |                   |   |         |  
|---------------------------------------------------------------- |  | -------------- | ------- | - | ----------------- | - | ------- | -
|                                                                 |  | March 31, 2005 |         |   | December 31, 2004 |  
|                                                                 |  | (in thousands) |        
|Senior secured credit facility                                   |  | $              | 206,417 |   |                   | $ | 180,422 |  
|Contingently convertible debentures, net of unamortized discount |  |                | 147,797 |   |                   |   | 147,769 |  
|Second mortgage notes payable                                    |  |                | 70,000  |   |                   |   | 70,000  |  
|Other loans                                                      |  |                | 996     |   |                   |   | 1,073   |  
|Deferred gain  fair value interest hedge                        |  |                | 198     |   |                   |   | 226     |  
|                                                                 |  |                |         |   |                   |   |         |  
|                                                                 |  |                | 425,408 |   |                   |   | 399,490 |  
|Less current maturities                                          |  |                | (356    | ) |                   |   | (356    | )
|                                                                 |  |                |         |   |                   |   |         |  
|                                                                 |  | $              | 425,052 |   |                   | $ | 399,134 |  
|                                                                 |  |                |         |   |                   |   |         |  



As of March 31, 2005, the
Companys borrowing base under its senior secured credit facility was $300 million, of which approximately $92.6 million was available for borrowing. Effective May 10, 2005, the senior credit facility lenders approved a $100 million increase in
the borrowing base. The loan agreements for the senior credit facility prohibit the declaration or payment of dividends by the Company and contain certain financial covenants, which, among other things, require the maintenance of a minimum current
ratio and a minimum earnings (before interest, taxes, depreciation,



9



---

depletion, amortization, non-cash income and expense and exploration costs) to interest ratio. Additionally, the Second
Mortgage Notes contain restrictive covenants, which, among other things, require maintenance of a minimum current ratio of at least 1.0, a ratio of net present value of proved reserves to total debt of at least 1.8 to 1.0, and a ratio of earnings
before interest, taxes, depreciation, depletion and amortization, non-cash income and expense to interest expense (consolidated net interest expense and current maturities of debt) of at least 1.25 (calculated in accordance with provisions of the
Second Mortgage Notes). The Company currently is in compliance with all such restrictions.



On September 11, 2003, the Company entered into a fair value interest swap covering $40 million of the fixed rate Second Mortgage Notes. The swap converted the debts 7.5% fixed-rate to a floating six-month LIBOR
base rate plus 4.07% through the termination of the notes. In January 2004, the swap position was cancelled, and the Company received $0.3 million. The gain on the swap settlement will be recognized over the period remaining to the original maturity
date of the swap, December 31, 2006.



5. COMMITMENTS AND CONTINGENCIES



On October 6, 2004, Quicksilver entered into an Incentive Arrangements
Agreement (the Agreement) with three executives of MGV and one employee of Quicksilver. The Agreement provides for the amendment and restatement of employment agreements with two MGV executives and terminates incentive agreements with
the other two individuals. The Agreement provides for awards of cash bonuses based upon the achievement of specified proved reserve targets, as well as options granted under the Companys Amended and Restated 1999 Stock Option and Retention
Stock Plan covering 1,183,422 shares of common stock at an exercise price of $31.27. In addition, the agreement provides for payment of $4.0 million no later than January 1, 2006 as compensation for a two-year non-compete period to commence at the
date an individual executive or employee should end their employment with MGV or QRI. The cash bonuses, in the aggregate, will be determined as a base amount of $5.0 million for achieving proved reserves of 400 billion cubic feet equivalent (Bcfe)
at December 31, 2005. Proved reserves in excess of 400 Bcfe, but not exceeding 1,000 Bcfe, will increase the cash bonuses earned by $0.05 per Mcfe. Presently, the Company has not recognized an obligation for the cash bonuses; however, the Company
will continue to monitor its potential liability in respect of these matters, and will record accruals in respect of such liabilities when payment thereof becomes probable and estimable.



In August 2001, a group of royalty owners, Athel E. Williams et al., brought suit against the Company and three of its subsidiaries in the
Circuit Court of Otsego County, Michigan. The suit alleges that Terra Energy Ltd, one of Quicksilvers subsidiaries, underpaid royalties or overriding royalties to the 13 named plaintiffs and to a class of plaintiffs who have yet to be
determined. The pleadings of the plaintiffs seek damages in an unspecified amount and injunctive relief against future underpayments. The court heard arguments on class certification on November 8, 2002, and on December 6, 2002 the court issued a
memorandum opinion granting class certification in part and denying it in part. On December 20, 2002, the Company filed a motion for clarification and reconsideration of the courts order. That motion was denied on March 9, 2003. After an
extended delay resulting from the retention of new counsel by the plaintiffs and the initiation of settlement discussions, on January 21, 2005, the Circuit Court issued an order certifying certain claims to proceed on behalf of a class. The Circuit
Court also entered a scheduling order setting trial for January 2007, and declined Defendants request to stay proceedings in that court pending an appeal of the certification order.



Defendants have sought leave to appeal the certification order by filing an Application for Leave to Appeal on February 11, 2005 with the
Michigan Court of Appeals. Defendants have also requested that the Court of Appeals stay proceedings in the Circuit Court pending the consideration of its appeal, and have requested that the Court of Appeals consider all matters in an expedited
manner. The Company is currently awaiting a ruling from that court on the application and the requests for stay and immediate consideration.



Based on information currently available to the Company, the Companys management believes that the final resolution of this matter will not have a material effect
on its financial position, results of operations, or cash flows.



6.
STOCK BASED COMPENSATION



Quicksilver has two stock-based compensation
plans, the 1999 Stock Option and Stock Retention Plan and the 2004 Non-Employee Director Stock Option Plan. The Company accounts for the plans under the recognition and measurement principles of APB Opinion No. 25, Accounting for Stock Issued to
Employees, and related interpretations.



Stock Options



On January 3, 2005, the non-employee directors of the Company received options to
purchase a total of 9,096 shares of stock at a strike price of $35.13. Additional options to purchase shares at a stock price of $49.64 were granted to a newly appointed non-employee a director of the Company on March 8, 2005. No compensation
expense was recognized at the dates of grant, as the exercise price was equal to the market value of the common stock at the dates of grant.



10



---

The following table reflects pro forma income before the cumulative effect of an accounting change and the associated
earnings per share as if the Company had applied the fair value recognition provisions of SFAS No. 123, Accounting for Stock-based Compensation, to stock-based employee compensation.



|                                                                                                                                              |  |                              |        |   |      |   |       |  
|--------------------------------------------------------------------------------------------------------------------------------------------- |  | ---------------------------- | ------ | - | ---- | - | ----- | -
|                                                                                                                                              |  | Three Months Ended March 31, |       
|                                                                                                                                              |  | 2005                         |        |   | 2004 |  
|                                                                                                                                              |  | (in thousands)               |       
|Net income                                                                                                                                    |  | $                            | 10,754 |   |      | $ | 5,937 |  
|Deduct: Total stock  based employee compensation expense determined under fair value based method for all awards, net of related tax
effects |  |                              | (1,931 | ) |      |   | (298  | )
|                                                                                                                                              |  |                              |        |   |      |   |       |  
|Pro forma net income                                                                                                                          |  | $                            | 8,823  |   |      | $ | 5,639 |  
|                                                                                                                                              |  |                              |        |   |      |   |       |  
|Net income change per common share:                                                                                                           |  |                              |        |   |      |   |       |  
|As reported                                                                                                                                   |  |                              |        |   |      |   |       |  
|Basic net income                                                                                                                              |  | $                            | 0.21   |   |      | $ | 0.12  |  
|Diluted                                                                                                                                       |  |                              | 0.20   |   |      |   | 0.12  |  
|                                                                                                                                              |  |                             
|Pro forma                                                                                                                                     |  |                              |        |   |      |   |       |  
|Basic                                                                                                                                         |  | $                            | 0.18   |   |      | $ | 0.11  |  
|Diluted                                                                                                                                       |  |                              | 0.16   |   |      |   | 0.11  |  



Restricted Stock Grants



Executive officers received a grant of 33,647 restricted shares, valued
at $44.51 per share, on February 9, 2005. The Company also granted 4,992 restricted shares, valued at $49.78 per share, to executive officers of its Canadian subsidiary, MGV Energy Inc. on February 28, 2005. The restricted stock grants provide for
vesting at a rate of one-third per year over the proceeding three years. Compensation expense will be recognized from the date of grant.



7. RELATED PARTY TRANSACTIONS



As of March 31, 2005, members of the Darden family, Mercury Exploration Company and Quicksilver Energy L.P., entities that are owned by members of the Darden family,
beneficially own approximately 37% of Quicksilvers shares outstanding. Thomas Darden, Glenn Darden and Anne Darden Self are officers and directors of the Company.



Quicksilver and its associated entities paid $0.2 million for rent during each of the three-month periods ended March 31, 2005 and 2004 for
office space in buildings which are owned by Pennsylvania Avenue Limited Partnership, a partnership owned by members of the Darden family and Mercury. Rental rates were determined based on comparable rates charged by third parties.



11



---

8. GEOGRAPHIC INFORMATION



The Company operates in two geographic segments, the United States and Canada. Both areas are engaged in the exploration and production
segment of the oil and gas industry. The Company evaluates performance based on operating income and property and equipment costs incurred (purchases of property, plant and equipment plus noncash changes in working capital related to acquisition of
property and equipment).



|                                             |  |                |         |        |   |           |  |   |              |   |  |   |        
|-------------------------------------------- |  | -------------- | ------- | ------ | - | --------- |  | - | ------------ | - |  | - | -------
|                                             |  | United States  |         | Canada |   | Corporate |  |   | Consolidated
|                                             |  | (in thousands)
|March 31, 2005                               |  |                |         |        |   |           |  |   |              |   |  |   |        
|Revenues                                     |  | $              | 35,275  |        | $ | 19,974    |  | $ |             |   |  | $ | 55,249 
|Depletion, depreciation and accretion        |  |                | 7,918   |        |   | 4,305     |  |   | 149          |   |  |   | 12,372 
|Operating income                             |  |                | 10,833  |        |   | 12,372    |  |   | (3,262       | ) |  |   | 19,943 
|Property, plant and equipment costs incurred |  |                | 30,621  |        |   | 26,480    |  |   | 7            |   |  |   | 57,108 
|                                             |  |                |         |       
|March 31, 2004                               |  |                |         |        |   |           |  |   |              |   |  |   |        
|Revenues                                     |  | $              | 32,085  |        | $ | 7,692     |  | $ |             |   |  | $ | 39,777 
|Depletion, depreciation and accretion        |  |                | 7,332   |        |   | 1,655     |  |   | 118          |   |  |   | 9,105  
|Operating income                             |  |                | 10,825  |        |   | 3,961     |  |   | (2,774       | ) |  |   | 12,012 
|Property, plant and equipment costs incurred |  |                | 20,510  |        |   | 19,377    |  |   | 30           |   |  |   | 39,917 
|                                             |  |                |         |       
|Fixed Assets - net                           |  |                |         |        |   |           |  |   |              |   |  |   |        
|March 31, 2005                               |  | $              | 603,352 |        | $ | 239,585   |  | $ | 1,590        |   |  | $ | 844,527
|December 31, 2004                            |  | $              | 581,575 |        | $ | 219,369   |  | $ | 1,666        |   |  | $ | 802,610



12



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ITEM 2. Managements Discussion and Analysis of Financial Condition and Results of Operations



Forward-Looking Information



Certain statements contained in this report and other materials we file with the SEC, or in
other written or oral statements made or to be made by us, other than statements of historical fact, are forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements may relate
to a variety of matters not currently ascertainable, such as future capital expenditures, drilling activity, acquisitions and dispositions, development or exploratory activities, cost savings efforts, production activities and volumes, hydrocarbon
reserves, hydrocarbon prices, hedging activities and the results thereof, financing plans, liquidity, competition and our ability to realize efficiencies related to certain transactions or organizational changes. Forward-looking statements reflect
our views, assumptions and current expectations with respect to future events, outcomes, results or performance. Words such as may, will, could, should assume, anticipate,
believe, estimate, expect, intend, plan, project, forecast, budget, strategy, predict, potential,
continue, or future, and similar expressions are used to identify forward-looking statements. Forward-looking statements can be affected by assumptions upon which they are based and by known or unknown risks or uncertainties.
Consequently, no forward-looking statements can be guaranteed. Actual events, outcomes, results or performance may vary materially. You are cautioned not to place undue reliance on any forward-looking statements. You should also understand that it
is not possible to predict or identify all such factors and you should not consider the following list to be a complete statement of all potential risks and uncertainties. Factors that could cause actual events, outcomes, results or performance to
differ materially from the results contemplated by such forward-looking statements, or which could otherwise materially affect our financial condition, results of operations or cash flows, include:



| |  |  | changes in general economic conditions;
| | - |  | ---------------------------------------



| |  |  | fluctuations in natural gas and crude oil prices;
| | - |  | -------------------------------------------------



| |  |  | failure or delays in achieving expected production from natural gas and crude oil exploration and development projects;
| | - |  | -----------------------------------------------------------------------------------------------------------------------



| |  |  | uncertainties inherent in estimates of natural gas and crude oil reserves and predicting natural gas and crude oil reservoir performance;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | competitive conditions in our industry;
| | - |  | ---------------------------------------



| |  |  | actions taken by third-party operators, processors and transporters;
| | - |  | --------------------------------------------------------------------



| |  |  | changes in the availability and cost of capital;
| | - |  | ------------------------------------------------



| |  |  | operating hazards, natural disasters, weather-related delays, casualty losses and other matters beyond our control;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | the effects of existing and future laws and governmental regulations;
| | - |  | ---------------------------------------------------------------------



| |  |  | the effects of existing or future litigation; and
| | - |  | -------------------------------------------------



| |  |  | factors discussed in our Form 10-K for the year ended December 31, 2004.
| | - |  | ------------------------------------------------------------------------



All forward-looking statements are expressly qualified in their entirety by the foregoing cautionary statements.





13



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RESULTS OF OPERATIONS



Summary Financial Data

Three Months
Ended March 31, 2005 and 2004



|                         |  |                              |        |      |   |       
|------------------------ |  | ---------------------------- | ------ | ---- | - | ------
|                         |  | Three Months Ended March 31,
|                         |  | 2005                         |        | 2004
|                         |  | (in thousands)              
|Total operating revenues |  | $                            | 55,249 |      | $ | 39,777
|Total operating expenses |  |                              | 35,530 |      |   | 28,056
|Operating income         |  |                              | 19,943 |      |   | 12,012
|Net income               |  |                              | 10,754 |      |   | 5,937 



We recorded net income of $10.8
million ($0.20 per diluted share) for the three months ended March 31, 2005, compared to net income of $5.9 million ($0.12 per diluted share) for the first quarter of 2004.



Operating Revenues



Revenues for the first quarter of 2005 were $55.2 million; a $15.4 million increase from the $39.8 million reported for the three months ended March 31, 2004. Production
revenue increased $15.7 million as a result of a 14% increase in sales volumes and a 23% increase in realized sales prices.



Gas, Oil and Related Product Sales



Sales volumes, revenues and average prices for the three months ended March 31, 2005 and 2004 are as follows:



|                                              |  |                              |         |      |   |        
|--------------------------------------------- |  | ---------------------------- | ------- | ---- | - | -------
|                                              |  | Three Months Ended March 31,
|                                              |  | 2005                         |         | 2004
|Natural gas, oil and NGL sales (in thousands) |  |                              |         |      |   |        
|United States                                 |  | $                            | 35,158  |      | $ | 31,438 
|Canada                                        |  |                              | 19,682  |      |   | 7,686  
|                                              |  |                              |         |      |   |        
|Total                                         |  | $                            | 54,840  |      | $ | 39,124 
|                                              |  |                              |         |      |   |        
|Product sale revenues (in thousands)          |  |                              |         |      |   |        
|Natural gas sales                             |  | $                            | 47,868  |      | $ | 33,033 
|Crude oil sales                               |  |                              | 5,916   |      |   | 5,199  
|NGL sales                                     |  |                              | 1,056   |      |   | 892    
|                                              |  |                              |         |      |   |        
|Total                                         |  | $                            | 54,840  |      | $ | 39,124 
|                                              |  |                              |         |      |   |        
|Average daily sales volume                    |  |                              |         |      |   |        
|Natural gas  Mcfd                            |  |                              |         |      |   |        
|United States                                 |  |                              | 83,941  |      |   | 82,710 
|Canada                                        |  |                              | 39,368  |      |   | 18,642 
|                                              |  |                              |         |      |   |        
|Total                                         |  |                              | 123,309 |      |   | 101,352
|Crude oil  Bbld                              |  |                              |         |      |   |        
|United States                                 |  |                              | 1,426   |      |   | 2,045  
|Canada                                        |  |                              | 1       |      |   |       
|                                              |  |                              |         |      |   |        
|Total                                         |  |                              | 1,427   |      |   | 2,045  
|NGL  Bbld                                    |  |                              |         |      |   |        
|United States                                 |  |                              | 354     |      |   | 394    
|Canada                                        |  |                              | 2       |      |   | 3      
|                                              |  |                              |         |      |   |        
|Total                                         |  |                              | 356     |      |   | 397    
|Total sales  Mcfed                           |  |                              |         |      |   |        
|United States                                 |  |                              | 94,622  |      |   | 97,336 
|Canada                                        |  |                              | 39,388  |      |   | 18,664 
|                                              |  |                              |         |      |   |        
|Total                                         |  |                              | 134,010 |      |   | 116,000



14



---

|                                         |  |                              |       |      |   |      
|---------------------------------------- |  | ---------------------------- | ----- | ---- | - | -----
|                                         |  | Three Months Ended March 31,
|                                         |  | 2005                         |       | 2004
|Unit prices - including impact of hedges |  |                              |       |      |   |      
|Natural gas - per Mcf                    |  |                              |       |      |   |      
|United States                            |  | $                            | 3.73  |      | $ | 3.37 
|Canada                                   |  |                              | 5.55  |      |   | 4.52 
|Consolidated                             |  |                              | 4.31  |      |   | 3.58 
|                                         |  |                             
|Crude oil - per Bbl                      |  |                              |       |      |   |      
|United States                            |  | $                            | 46.06 |      | $ | 27.94
|Canada                                   |  |                              | 39.11 |      |   |     
|Consolidated                             |  |                              | 46.05 |      |   | 27.94
|                                         |  |                             
|NGL - per Bbl                            |  |                              |       |      |   |      
|United States                            |  | $                            | 32.92 |      | $ | 24.65
|Canada                                   |  |                              | 34.60 |      |   | 34.93
|Consolidated                             |  |                              | 32.93 |      |   | 24.73



Natural gas sales of $47.9 million for
the first quarter of 2005 were 45% higher than the $33.0 million for the 2004 first quarter. First quarter 2005 gas revenue increased $6.7 million as a result of a $0.73 per Mcf increase in the average sales price and $8.1 million from a 20%
increase in sales volumes as compared to the first quarter of 2004. Production from our coal bed methane (CBM) projects and conventional properties in Canada increased for the first quarter of 2005 by approximately 2,145,000 Mcf and
150,000 Mcf, respectively, from the 2004 first quarter as a result of new wells drilled since March 31, 2004. Natural production declines partially offset the Canadian production increases. New wells in the Texas Barnett Shale and New Albany Shale
increased sales volumes by approximately 330,000 Mcf and 260,000 Mcf, respectively, for the first quarter of 2005 compared to the first quarter of 2004. Michigan natural gas volumes included 210,000 Mcf from Antrim wells and 100,000 Mcf from Prairie
du Chien wells drilled after the first quarter of 2004. Antrim Shale interests purchased in the third quarter of 2005 added approximately 60,000 Mcf of natural gas volumes during the first quarter of 2005. These U.S. production increases were
partially offset by natural production declines.



Crude oil sales were $5.9
million for the three months ended March 31, 2005 compared to $5.2 million in the first quarter of 2004. Lower production reduced revenue $2.7 million compared to the prior year quarter. The absence of production from Wyoming and Michigan crude oil
properties sold in the third quarter of 2004 lowered volumes by approximately 51,000 barrels for the first quarter of 2005. The average crude oil sales price for the first quarter of 2005 was $46.05 per Bbl compared to $27.94 per Bbl in the first
quarter of 2004. Higher sales prices increased revenue $3.4 million.



Other
Revenue



Other revenue decreased $0.2 million from the prior year period.
The decrease resulted primarily from $0.3 million in hedging losses associated with our marketing activities in the first quarter of 2005.



Operating Expenses



First quarter operating expenses for 2005 were $35.5 million; an increase of $7.5 million over the $28.0 million of expenses incurred in the first quarter of 2004.



Oil and Gas Production Costs



|                               |  |                                         |        |      |   |       
|------------------------------ |  | --------------------------------------- | ------ | ---- | - | ------
|                               |  | Three Months Ended March 31,           
|                               |  | 2005                                    |        | 2004
|                               |  | (in thousands, except per unit amounts)
|Production expenses            |  |                                         |        |      |   |       
|United States                  |  | $                                       | 16,356 |      | $ | 13,929
|Canada                         |  |                                         | 3,298  |      |   | 2,076 
|                               |  |                                         |        |      |   |       
|Total                          |  | $                                       | 19,654 |      | $ | 16,005
|                               |  |                                         |        |      |   |       
|Production expenses  per Mcfe |  |                                         |        |      |   |       
|United States                  |  | $                                       | 1.92   |      | $ | 1.57  
|Canada                         |  |                                         | 0.93   |      |   | 1.22  
|Consolidated                   |  |                                         | 1.63   |      |   | 1.52  



15



---

Oil and gas production costs were $19.7 million for the 2005 first quarter. The $3.7 million increase over the prior year
quarter included a $1.2 million increase in Canadian production costs. Canadian production increased approximately 1,850,000 Mcfe, net, primarily as a result of CBM and conventional wells drilled since the first quarter of 2004. Canadian production
expenses decreased $0.29 per Mcfe to $0.93 per Mcfe as a result of the improving economies of scale.



U.S. production expenses increased $2.5 million for the first quarter of 2005 compared to the prior year period. Operating expenses for Barnett Shale wells increased production expenses approximately $1.0 million. At
the end of the first quarter, we had 12 operated wells producing in the Barnett Shale. Operating costs in the Barnett Shale will continue to increase as additional wells are added to production. Initial operating expenses for water disposal and
labor are typically greater when production begins as initial production contains a high water concentration. Operating costs for each well tend to decrease as natural gas production increases following the period of initial production. In Michigan,
compressor overhauls, workovers and repair and maintenance increased production expense $0.9 million for the first quarter of 2005. The number of compressors undergoing routine, periodic overhauls was greater in the current year quarter. In
addition, the producing well count for Michigan, Indiana and Kentucky was over 275 wells greater than during the 2004 first quarter. Finally, U.S. severance tax expense also increased approximately $0.2 million as a result of higher natural gas and
crude oil prices in 2005. Partially offsetting these increases was a $0.6 million decrease in Wyoming production expense as a result of the 2004 third quarter sale of Wyoming crude oil properties. These items increased U.S. production expenses by
approximately $0.27 per Mcfe for the first quarter of 2005.



Depletion,
Depreciation and Accretion



|                                            |  |                                         |        |      |   |      
|------------------------------------------- |  | --------------------------------------- | ------ | ---- | - | -----
|                                            |  | Three Months Ended March 31,           
|                                            |  | 2005                                    |        | 2004
|                                            |  | (In thousands, except per unit amounts)
|Depletion                                   |  | $                                       | 10,738 |      | $ | 7,696
|Depreciation of other fixed assets          |  |                                         | 1,363  |      |   | 1,184
|Accretion                                   |  |                                         | 271    |      |   | 225  
|                                            |  |                                         |        |      |   |      
|Total depletion, depreciation and accretion |  | $                                       | 12,372 |      | $ | 9,105
|                                            |  |                                         |        |      |   |      
|Average depletion cost per Mcfe             |  | $                                       | 0.89   |      | $ | 0.73 



First quarter 2005 depletion of $10.7
million was $3.0 million higher than depletion for the 2004 quarter primarily as a result of an increase in the depletion rate as well as additional sales volumes. Our depletion rate increased over the prior year period as a result of the
significant capital expenditures and proved reserves added for our Canadian CBM and Texas Barnett Shale properties.



General and Administrative Expense



General and administrative costs incurred during the three months ended March 31, 2005 were $3.1 million. The $0.5 million increase over first quarter of 2004 expense was
primarily the result of a $0.4 million increase in contract labor costs and legal and accounting fees due largely to compliance with Sarbanes-Oxley and corporate governance requirements.



Interest Expense



Interest expense for the first quarter of 2005 was $4.7 million, an increase of $1.2 million compared to the first quarter of 2004. Interest expense increased as a result
of higher debt levels in 2005; however, a decrease in our overall effective interest rate partially offset that increase. The decrease in our effective interest rate was the result, in part, of the 1.875% interest rate borne by our $150.0 million
contingently convertible debentures issued in November 2004.



Income Tax
Expense



Our provision for income taxes increased $1.9 million from the
prior year period as a result of higher pretax income for the first quarter of 2005. Our U.S. income tax provision of $1.6 million was established using the statutory U.S. federal rate of 35%. The Canadian tax provision of approximately $3.0 million
was accrued at a Canadian combined federal and provincial statutory rate of 33.6% and included a current tax provision of $0.1 million.



LIQUIDITY, CAPITAL RESOURCES AND FINANCIAL POSITION



Net cash from operations was $22.0 million for the three months ended March 31, 2005, an increase of $1.0 million compared to the same period in 2004. The 5% increase was
due primarily to additional net income for the first quarter of 2005. Operating income of $19.9 million was $7.9 million higher from the 2004 first quarter primarily as a result of a 14% increase in sales volumes and a 23% increase in realized
prices. Additionally, non-cash expenses for depletion,



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depreciation and amortization and deferred tax expense increased for the 2005 first quarter, but were partially offset by
the use of working capital associated with additional operations and capital expenditures. The 2005 first quarter also included an increase in interest expense of $1.2 million. The increased interest expense resulted from additional debt incurred to
fund our capital budget.



Our principal sources of cash include sales of
natural gas, crude oil and NGLs and revenues from natural gas transportation and processing. We sold approximately 25% of our natural gas production using price swaps with an average price of $2.79 per Mcf and an additional 24% of our natural gas
production was sold under long-term contracts with price floors. Additionally, price collars covered 16% and 70% of our natural gas and crude oil production, respectively. Our $2.79 per Mcf fixed-price natural gas swaps terminate in April 2005.
Those fixed-price swaps have been replaced with hedges covering shorter terms. The new hedges are fixed-price swaps covering 15,000 Mcfd of our U.S. natural gas sales at $7.35 per Mcf for the months of May through October 2005, and price collars
with average floor and cap prices of $5.75 per Mcf and $7.42 per Mcf, respectively, hedging an additional 20,000 Mcfd of our U.S. natural gas sales for the period May through October 2005. Additionally, we hedged 15,000 Mcfd of our Canadian natural
gas sales for the period April through October 2005 using price collars with average floor and cap prices of $5.50 per Mcf and $6.75 per Mcf, respectively. An additional 5,000 Mcfd of our Canadian natural gas sales are hedged for the period May
through October 2005 using a price collar with a floor price of $6.50 per Mcf and a cap price of $8.15 per Mcf.



In the first quarter of 2005, we purchased $60.3 million of property and equipment an increase of $14.6 million when compared to the first quarter of 2004. Costs incurred
for property and equipment (property and equipment purchases plus noncash changes in working capital related to acquisition of property and equipment) were $57.1 million. Capital costs incurred during the 2005 first quarter consisted of $53.6
million incurred for exploration and development activities and $3.5 million expended primarily for construction of the first phase of the Cowtown Pipeline. Of the $27.3 million incurred for U.S. exploration and development, $22.5 million was
incurred in Texas, including $6.4 million for leasehold acquisitions.



|                                                   |  |                                   |       
|-------------------------------------------------- |  | --------------------------------- | ------
|                                                   |  | Three Months Ended March 31, 2005
|                                                   |  | (in thousands)                   
|Exploration and development                        |  |                                   |       
|United States                                      |  | $                                 | 27,325
|Canada                                             |  |                                   | 26,242
|                                                   |  |                                   |       
|Total exploration and development                  |  |                                   | 53,567
|Gas processing/transportation and other            |  |                                   | 3,541 
|                                                   |  |                                   |       
|Total property, plant and equipment costs incurred |  | $                                 | 57,108
|                                                   |  |                                   |       



Net cash provided by financing
activities for the three months ended March 31, 2005 was $28.8 million. During the first quarter of 2005, we increased borrowings under our senior credit facility by $27.8 million. We also received $1.1 million in proceeds from the exercise of
employee stock options. As of March 31, 2005, we had approximately $92.6 million of borrowing capacity available under our $300 million senior credit facility, and we were in compliance with the restrictive covenants contained in our senior credit
facility and second mortgage notes payable. Effective May 10, 2005, the senior credit facility lenders approved a $100 million increase in the borrowing base.



As of March 31, 2005 and December 31, 2004, our total capitalization was as follows:



|                                    |  |                |         |                   |   |        
|----------------------------------- |  | -------------- | ------- | ----------------- | - | -------
|                                    |  | March 31, 2005 |         | December 31, 2004
|                                    |  | (in thousands)
|Senior secured credit facility      |  | $              | 206,417 |                   | $ | 180,422
|Convertible subordinated debentures |  |                | 147,797 |                   |   | 147,769
|Second mortgage notes payable       |  |                | 70,000  |                   |   | 70,000 
|Other loans                         |  |                | 996     |                   |   | 1,073  
|Deferred gain  fair interest hedge |  |                | 198     |                   |   | 226    
|                                    |  |                |         |                   |   |        
|Total debt                          |  |                | 425,408 |                   |   | 399,490
|Stockholders equity                |  |                | 316,363 |                   |   | 304,276
|                                    |  |                |         |                   |   |        
|                                    |  | $              | 741,771 |                   | $ | 703,766
|                                    |  |                |         |                   |   |        



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ITEM 6. Exhibits:



|            |  |                                                                                                                       
|----------- |  | ----------------------------------------------------------------------------------------------------------------------
|Exhibit No. |  | Description                                                                                                           
|*15.1       |  | Awareness Letter of Deloitte & Touche LLP                                                                             
|*31.1       |  | Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                               
|*31.2       |  | Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002                                               
|*32.1       |  | Certification Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002



* Filed herewith



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SIGNATURES



Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto
duly authorized.



Dated: August 8, 2005



Quicksilver Resources Inc.By:

/s/ Glenn DardenGlenn DardenPresident and Chief Executive Officer




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