8-K

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): November 15, 2013

QUICKSILVER RESOURCES INC.(Exact name of registrant as specified in its charter)

Delaware (State or other jurisdiction
of incorporation) 001-14837 (Commission
File Number) 75-2756163 (IRS Employer
Identification No.)

801 Cherry Street

Suite 3700, Unit 19

Fort Worth, Texas 76102

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (817) 665-5000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

¨   Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

¨   Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

¨   Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

¨   Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 1.01. Entry into a Material Definitive Agreement.

On November 15, 2013, Quicksilver Resources Inc. (the “Company”), Quicksilver Canada Inc., the U.S. lenders party thereto, the Canadian lenders party thereto, JPMorgan Chase Bank, N.A., as global administrative agent and JPMorgan Chase Bank, N.A., Toronto Branch, as Canadian administrative agent entered into an Omnibus Amendment (the “Amendment”) to the (i) amended and restated U.S. senior secured revolving credit facility dated as of December 22, 2011 (the “U.S. First Lien Credit Agreement”) and (ii) amended and restated Canadian senior secured revolving credit facility dated as of December 22, 2011 (the “Canadian First Lien Credit Agreement” and, together with the U.S. First Lien Credit Agreement, the “Combined Credit Agreements”). The Amendment amended the terms of the Combined Credit Agreements to:

• Maintain the global borrowing base at $350,000,000; and

• Amend the minimum required interest coverage ratio in the fourth quarter of 2013 through the second quarter of 2014 to 1.10, such that the interest coverage requirements are now as follows:

Period	Interest Coverage Ratio	Period	Interest Coverage Ratio
Q4 2013	1.10	Q2 2015	1.15
Q1 2014	1.10	Q3 2015	1.15
Q2 2014	1.10	Q4 2015	1.20
Q3 2014	1.10	Q1 2016	1.50
Q4 2014	1.10	Q2 2016	2.00
Q1 2015	1.10

The above description is qualified in its entirety by the Amendment, a copy of which is filed as Exhibit 10.1 hereto and incorporated by reference herein.

Certain of the parties to the Amendment and their respective affiliates have, from time to time, performed, and may in the future perform, various financial, advisory, commercial banking and investment banking services for the Company and the Company’s affiliates in the ordinary course of business for fees and expenses.

On November 18, 2013, the Company issued a press release announcing the Amendment, a copy of which is filed as Exhibit 99.1 hereto and incorporated by reference herein.

Item 9.01. Financial Statements and Exhibits.

(d) Exhibits.

Exhibit Number	Description
10.1	Omnibus Amendment No. 6 to Combined Credit Agreements, dated as of November 15, 2013, among Quicksilver Resources Inc., Quicksilver Resources Canada Inc. and the agents and lenders identified therein
99.1	Press release dated November 18, 2013

SIGNATURE

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 hereunto duly authorized.

QUICKSILVER RESOURCES INC.
By:	/s/ John C. Regan
	John C. Regan
	Senior Vice President – Chief Financial Officer and Chief Accounting Officer

Date: November 18, 2013

INDEX TO EXHIBITS

Exhibit Number	Description
10.1	Omnibus Amendment No. 6 to Combined Credit Agreements, dated as of November 15, 2013, among Quicksilver Resources Inc., Quicksilver Resources Canada Inc. and the agents and lenders identified therein
99.1	Press release dated November 18, 2013

EX-10.1

Exhibit 10.1

OMNIBUS AMENDMENT NO. 6
TO COMBINED CREDIT AGREEMENTS

THIS OMNIBUS AMENDMENT NO. 6 TO COMBINED CREDIT AGREEMENTS (this “Amendment”), dated as of November 15, 2013,is among QUICKSILVER RESOURCES INC., (the “U.S. Borrower”), QUICKSILVER RESOURCES CANADA INC., (the “Canadian Borrower”) (collectively, the “Combined Borrowers”), JPMORGAN CHASE BANK, N.A., as global administrative agent (in such capacity, the “Global Administrative Agent”), JPMORGAN CHASE BANK, N.A., TORONTO BRANCH, as Canadian administrative agent (in such capacity, the “Canadian Administrative Agent” and, together with the Global Administrative Agent, the “Administrative Agents”), and each of the U.S. Lenders and Canadian Lenders party hereto.

R E C I T A L S

A.    The U.S. Borrower, the Global Administrative Agent and the various financial institutions party thereto as Agents or Lenders (the “U.S. Lenders”) entered into that certain Amended and Restated Credit Agreement dated as of December 22, 2011 (as amended by Omnibus Amendment No. 1 dated as of May 23, 2012, Omnibus Amendment No. 2 dated as of August 6, 2012, Omnibus Amendment No. 3 dated as of October 5, 2012, Omnibus Amendment No. 4 dated as of April 30, 2013 and Omnibus Amendment No. 5 dated as of June 21, 2013, and as further amended, supplemented or modified, the “U.S. Credit Agreement”).

B.    The U.S. Borrower, as parent, the Canadian Borrower, the Canadian Administrative Agent, the Global Administrative Agent, and the various financial institutions party thereto as agents or lenders (the “CanadianLenders”) entered into that certain Amended and Restated Credit Agreement dated as of December 22, 2011 (as amended by Omnibus Amendment No. 1 dated as of May 23, 2012, Omnibus Amendment No. 2 dated as of August 6, 2012, Omnibus Amendment No. 3 dated as of October 5, 2012, Omnibus Amendment No. 4 dated as of April 30, 2013 and Omnibus Amendment No. 5 dated as of June 21, 2013, and as further amended, supplemented or modified, the “Canadian Credit Agreement”) (the U.S. Credit Agreement and the Canadian Credit Agreement being collectively referred to as the “Combined Credit Agreements”).

C.    The Combined Borrowers have requested that the Required Lenders and the Required U.S. Lenders agree, and the Required Lenders and the Required U.S. Lenders have agreed, to amend certain provisions of the Combined Credit Agreements.

NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows:

Section 1.Defined Terms. Each capitalized term used herein but not otherwise defined herein has the meaning given to such term in the U.S. Credit Agreement, as amended by this Amendment. Unless otherwise indicated, all section references in this Amendment refer to applicable section of the Combined Credit Agreements.

Section 2.Amendments to Combined Credit Agreements.

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2.1Amendments to Section 9.01(a)—Interest Coverage Ratio.

(a)Section 9.01(a) of the U.S. Credit Agreement is hereby amended to read:

“(a)    Interest Coverage Ratio. The Borrower will not, as of the last day of any fiscal quarter set forth below, permit its ratio of (i) EBITDAX for the period of four fiscal quarters then ending to (ii) Cash Interest Expense for such period to be less than the ratio set forth opposite such date:

Fiscal Quarter Ending	Minimum Interest Coverage Ratio
December 31, 2013	1.10 to 1.0
March 31, 2014	1.10 to 1.0
June 30, 2014	1.10 to 1.0
September 30, 2014	1.10 to 1.0
December 31, 2014	1.10 to 1.0
March 31, 2015	1.10 to 1.0
June 30, 2015	1.15 to 1.0
September 30, 2015	1.15 to 1.0
December 31, 2015	1.20 to 1.0
March 31, 2016	1.50 to 1.0
June 30, 2016	2.00 to 1.0

”.

(b)Section 9.01(a) of the Canadian Credit Agreement is hereby amended to read:

“(a)    Interest Coverage Ratio. The Parent will not, as of the last day of any fiscal quarter set forth below, permit its ratio of (i) EBITDAX for the period of four fiscal quarters then ending to (ii) Cash Interest Expense for such period to be less than the ratio set forth opposite such date:

Fiscal Quarter Ending	Minimum Interest Coverage Ratio
December 31, 2013	1.10 to 1.0
March 31, 2014	1.10 to 1.0
June 30, 2014	1.10 to 1.0
September 30, 2014	1.10 to 1.0
December 31, 2014	1.10 to 1.0
March 31, 2015	1.10 to 1.0
June 30, 2015	1.15 to 1.0
September 30, 2015	1.15 to 1.0
December 31, 2015	1.20 to 1.0
March 31, 2016	1.50 to 1.0
June 30, 2016	2.00 to 1.0

”.

Section 3.Global Borrowing Base Redetermination; Allocation of U.S. Borrowing Base and Canadian Borrowing Base.    The Required Lenders and the Combined Borrowers agree that

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from and after the Sixth Amendment Effective Date (as defined below), the amount of the Global Borrowing Base shall be $350,000,000 and the amount of the U.S. Borrowing Base shall be $275,000,000, with an Allocated U.S. Borrowing Base of $205,000,000 and an Allocated Canadian Borrowing Base of $145,000,000. This provision does not limit redeterminations of the Global Borrowing Base or U.S. Borrowing Base, including in accordance with Section 2.07(c) or further adjustments thereto pursuant to Section 8.12(c), Section 9.02(n), Section 9.10(d) or Section 9.10(i) of the Combined Credit Agreements. This Section 3 constitutes a New Borrowing Base Notice in accordance with Section 2.07(d) of the Combined Credit Agreements and a Borrowing Base Allocation Notice in accordance with Section 2.07(e) of the Combined Credit Agreements, in each case, delivered in connection with this second Scheduled Redetermination of the Global Borrowing Base and U.S. Borrowing Base for the 2013 calendar year.

Section 4.Conditions Precedent.

4.1This Amendment shall not become effective until the date on which each of the following conditions is satisfied (the “Sixth Amendment Effective Date”):

(a)The Global Administrative Agent shall have received from each of the Combined Borrowers, the Required Lenders, the Global Administrative Agent and the Canadian Administrative Agent counterparts of this Amendment signed on behalf of each such Person.

(b)The Combined Borrowers shall have paid all amounts due and payable in connection with this Amendment on or prior to the Sixth Amendment Effective Date, including (i) to the extent invoiced at least one (1) Business Day prior to such date, all documented out-of-pocket expenses required to be reimbursed or paid by the Combined Borrowers under the Combined Credit Agreements and (ii) all consent fees owing under the Consent Fee Letter dated the date hereof between the U.S. Borrower and the Global Administrative Agent.

Section 5.Miscellaneous.

5.1Confirmation. All of the terms and provisions of the Combined Credit Agreements, as amended by this Amendment, are, and shall remain, in full force and effect following the effectiveness of this Amendment.

5.2Ratification and Affirmation; Representations and Warranties. Each Combined Borrower hereby (a) acknowledges the terms of this Amendment; (b) ratifies and affirms its obligations under, and acknowledges, renews and extends its continued liability under, each Loan Document (as defined in the applicable Combined Credit Agreement as used in this Section) to which it is a party and agrees that each Loan Document to which it is a party remains in full force and effect, except as expressly amended hereby, notwithstanding the amendments contained herein; and (c) represents and warrants to the Lenders (as defined in the applicable Combined Credit Agreement) that as of the date hereof, after giving effect to the terms of this Amendment: (i) all of the representations and warranties contained in each Loan Document to which it is a party are true and correct in all material respects on and as of the Sixth Amendment Effective Date, except that to the extent any such representations and warranties are (x) expressly

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limited to an earlier date, in which case, on the Sixth Amendment Effective Date such representations and warranties shall continue to be true and correct as of such specified earlier date and (y) qualified by materiality, such representations and warranties (as so qualified) shall continue to be true and correct in all respects and (ii) no Default (as defined in the applicable Combined Credit Agreement) has occurred and is continuing as of the Sixth Amendment Effective Date. This Amendment is a Loan Document.

5.3Counterparts. This Amendment may be executed by one or more of the parties hereto in any number of separate counterparts, and all of such counterparts taken together shall be deemed to constitute one and the same instrument. Delivery of an executed counterpart by facsimile or electronic mail shall be effective as delivery of a manually executed counterpart hereof.

5.4Governing Law, Jurisdiction, etc. Sections 12.09 and 12.18 of the Canadian Credit Agreement shall be incorporated herein mutatis mutandis as this Amendment relates to the Canadian Credit Agreement and Sections 12.09 and 12.18 of the U.S. Credit Agreement shall be incorporated herein mutatis mutandis as this Amendment relates to the U.S. Credit Agreement.

[SIGNATURES BEGIN NEXT PAGE]

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IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be duly executed as of the date first written above.

QUICKSILVER RESOURCES INC., a Delaware corporation

By: /s/ Vanessa Gomez LaGatta    
Name: Vanessa Gomez LaGatta
Title: Vice President - Treasurer

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

QUICKSILVER RESOURCES CANADA INC., an Alberta, Canada corporation

By: /s/ Vanessa Gomez LaGatta    
Name: Vanessa Gomez LaGatta
Title: Vice President - Treasurer

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

JPMORGAN CHASE BANK, N.A., as a Lender under the U.S. Credit Agreement and as Global Administrative Agent

By: /s/ David Morris    
Name: David Morris
Title: Authorized Officer

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

JPMORGAN CHASE BANK, N.A., TORONTO BRANCH, as a Lender under the Canadian Credit Agreement and as Canadian Administrative Agent

By: /s/ Michael N. Tam    
Name: Michael N. Tam
Title: Senior Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

BANK OF AMERICA, N.A., as a Lender under the U.S. Credit Agreement

By: /s/ John W. Woodiel III    
Name: John W. Woodiel III
Title: Managing Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

BANK OF AMERICA, N.A., (by its Canada Branch) as a Lender under the Canadian Credit Agreement

By: /s/ Medina Sales de Andrade    
Name: Medina Sales de Andrade
Title: Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

BRANCH BANKING & TRUST COMPANY, as a Lender under the U.S. Credit Agreement and the Canadian Credit Agreement

By: /s/ James Giordano    
Name: James Giordano    
Title: Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CANADIAN IMPERIAL BANK OF COMMERCE, as a Lender under the Canadian Credit Agreement

By: /s/ Randy Geislinger        
Name: Randy Geislinger
Title: Executive Director

By: /s/ Chris Perks        
Name: Chris Perks
Title: Managing Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CANADIAN IMPERIAL BANK OF COMMERCE, NEW YORK BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ Trudy Nelson    
Name: Trudy Nelson
Title: Managing Director

By: /s/ Richard Antl    
Name: Richard Antl
Title: Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CITIBANK, N.A., as a Lender under the U.S. Credit Agreement

By: /s/ Eamon Baqui        
Name: Eamon Baqui
Title: Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CITIBANK, N.A., CANADIAN BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ Gordon Dekuyper    
Name: Gordon Dekuyper
Title: Managing Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

COMERICA BANK, as a Lender under the U.S. Credit Agreement

By: /s/ Katya Evseev        
Name: Katya Evseev
Title: Assistant Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

COMERICA BANK, CANADA BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ Omer Ahmed        
Name: Omer Ahmed
Title: Portfolio Manager

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

COMPASS BANK, as a Lender under the U.S. Credit Agreement

By: /s/ Umar Hassan        
Name: Umar Hassan    
Title: Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CREDIT AGRICOLE CORPORATE AND INVESTMENT BANK, as a Lender under the U.S. Credit Agreement and the Canadian Credit Agreement

By: /s/ Michael D. Willis        
Name: Michael D. Willis
Title: Managing Director

By: /s/ Sharada Manne        
Name: Sharada Manne
Title: Managing Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH, as a Lender under the U.S. Credit Agreement

By: /s/ Kevin Buddhdew        
Name: Kevin Buddhew
Title: Authorized Signatory

By: /s/ Michael Spaight        
Name: Michael Spaight
Title: Authorized Signatory

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

CREDIT SUISSE AG, TORONTO BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ Alain Daoust        
Name: Alain Daoust
Title: Director

By: /s/ Chris Gage    
Name: Chris Gage
Title: Chief Financial Officer

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

DEUTSCHE BANK TRUST COMPANY AMERICAS, as a Lender under the U.S. Credit Agreement

By: /s/ Michael Getz        
Name: Michael Getz    
Title: Vice President    

By: /s/ Lisa Wong        
Name: Lisa Wong    
Title: Vice President    

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

DEUTSCHE BANK AG CANADA BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ Paul Uffelmann        
Name: Paul Uffelman
Title: Vice President

By: /s/ Leigh Knowles    
Name: Leigh Knowles
Title: Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

EXPORT DEVELOPMENT CANADA, as a Lender under the U.S. Credit Agreement

By: /s/ Trevor Mulligan        
Name: Trevor Mulligan
Title: Asset Manager

By: /s/ Talal M. Kairouz        
Name: Talal M. Kairouz
Title: Senior Asset Manager

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

KEYBANK, N.A., as a Lender under the U.S. Credit Agreement

By: /s/ Stephen J. Jones        
Name: Stephen J. Jones
Title: Senior Vice President

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

SUMITOMO MITSUI BANKING CORPORATION, as a Lender under the U.S. Credit Agreement

By: /s/ Masaki Sone        
Name: Masaki Sone    
Title: Managing Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

THE ROYAL BANK OF SCOTLAND plc, as a Lender under the U.S. Credit Agreement

By: /s/ David W. Stack        
Name: David W. Stack
Title: Senior Vice President    

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

THE ROYAL BANK OF SCOTLAND N.V., (CANADA) BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ David W. Stack        
Name: David W. Stack    
Title: Authorized Signatory    

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

TORONTO DOMINION (NEW YORK) LLC, as a Lender under the U.S. Credit Agreement

By: /s/ Marie Fernandes        
Name: Marie Fernandes
Title: Authorized Signatory

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

THE TORONTO-DOMINION BANK, as a Lender under the Canadian Credit Agreement

By: /s/ Marie Fernandes    
Name: Marie Fernandes
Title: Authorized Signatory

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

U.S. BANK NATIONAL ASSOCIATION, as a Lender under the U.S. Credit Agreement

By: /s/ John C. Springer        
Name: John C. Springer    
Title: Vice President    

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

UBS LOAN FINANCE LLC, as a Lender under the U.S. Credit Agreement

By: /s/ Lana Gifas        
Name: Lana Gifas
Title: Director

By: /s/ Jennifer Anderson        
Name: Jennifer Anderson
Title: Associate Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

UBS AG CANADA BRANCH, as a Lender under the Canadian Credit Agreement

By: /s/ Lana Gifas        
Name: Lana Gifas
Title: Director

By: /s/ Jennifer Anderson        
Name: Jennifer Anderson
Title: Associate Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

WELLS FARGO BANK, N.A., as a Lender under the U.S. Credit Agreement

By: /s/ Greg Smothers        
Name: Greg Smothers
Title: Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

WELLS FARGO FINANCIAL CORPORATION CANADA, as a Lender under the Canadian Credit Agreement

By: /s/ Greg Smothers    
Name: Greg Smothers
Title: Director

SIGNATURE PAGE TO OMNIBUS AMENDMENT NO. 6 TO

COMBINED CREDIT AGREEMENTS

EX-99.1

Exhibit 99.1

QUICKSILVER RESOURCES BORROWING BASE REAFFIRMED AT $350 MILLION

FORT WORTH, TEXAS (November 18, 2013) - Quicksilver Resources Inc. (NYSE: KWK)today announced that its bank group comprised of 20 lenders has reaffirmed the $350 million global borrowing base on the company’s Combined Credit Agreements.

The company also closed an amendment to its Combined Credit Agreements on November 15, 2013, which amended the minimum interest coverage ratio in the fourth quarter of 2013 through the second quarter of 2014 to 1.10x.

As of October 31, 2013, the company had combined liquidity of $341 million comprised of availability under the Combined Credit Agreements and cash and short-term investments.

About Quicksilver Resources

Fort Worth, Texas-based Quicksilver Resources is a publicly traded independent oil and gas company engaged in the exploration, development and acquisition of oil and gas, primarily from unconventional reservoirs including shales and coal beds in North America. Quicksilver’s Canadian subsidiary, Quicksilver Resources Canada Inc., is headquartered in Calgary, Alberta. Quicksilver’s common stock is traded on the New York Stock Exchange under the symbol “KWK.” For more information about Quicksilver Resources, visit www.qrinc.com.

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Investor & Media Contact:

David Erdman

(817) 665-4023

KWK 13-29

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