Document:

exv10w8

	 	 	 	 	 

Exhibit 10.8

EXTENSION AGREEMENT

     This Extension Agreement is executed as of December 3, 2008 by and between Quicksilver
Resources Inc. (“QRI”) and Quicksilver Gas Services LP (“KGS”). Capitalized terms not otherwise
defined herein shall have the same meaning ascribed to such term in that certain Omnibus Agreement
dated August 10, 2007 executed between KGS and QRI.

     A. Pursuant to Section 2.3 of the Omnibus Agreement, QRI is required to provide KGS a notice
and offer for sale regarding its acquisition of midstream assets in the Quicksilver Counties within
120 days of the consummation of such acquisition (the “Offer”).

     B. Pursuant to that certain Purchase and Sale Agreement dated July 3, 2008 and closed on
August 8, 2008, QRI acquired certain oil and gas assets in the Alliance Airport area of Tarrant and
Denton Counties, Texas which includes midstream assets (the “Alliance Midstream Assets”).

     C. QRI and KGS desire to extent the time period and the date by which QRI must provide to KGS
the Offer regarding its acquisition of the Alliance Midstream Assets.

     NOW, THEREFORE, in consideration of the mutual premises and covenants contained herein and
other good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree to extend the deadline by which QRI shall provide the Offer
to KGS to be no later than March 31, 2009.

     EXECUTED as of the date first written above.

	 	 	 	 	 
	 	QUICKSILVER RESOURCES INC.

 	 
	 	By:  	/s/ Philip Cook
 	 
	 	 	Name:  	Philip Cook 	 
	 	 	Title:  	Sr. Vice President and CFO 	 
	 
	 	QUICKSILVER GAS SERVICES LP

 	 
	 	By:  	QUICKSILVER GAS SERVICES GP LLC,
its general partner
 	 
	 	 	 
	 	By:  	                                                   /s/ Thomas F. Darden
 	 
	 	 	Name:  	Thomas F. Darden 	 
	 	 	Title:  	President and CEOexv10w15

	 	 	 	 	 

Exhibit 10.15

ADDENDUM AND AMENDMENT TO

GAS GATHERING AND PROCESSING AGREEMENT

MASH UNIT LATERAL

     This Addendum and Amendment to Gas Gathering and Processing Agreement Mash Unit Lateral
(this “Addendum”) is executed effective as of January 1, 2009 (the “Effective Date”), between and
among Quicksilver Resources Inc. (“Producer”), and Cowtown Pipeline Partners L.P. (“Gatherer”) and
Cowtown Gas Processing Partners L.P. (“Processor”). Capitalized terms not otherwise defined herein
shall have the meaning given such terms in the Agreement (defined below).

RECITALS

     A. Producer, Gatherer and Processor have heretofore entered into that certain Sixth Amended
and Restated Gas Gathering and Processing Agreement dated effective September 1, 2008 (the
“Agreement”), covering the gathering and processing of natural gas produced from those counties in
Texas more particularly described as the Contract Area.

     B. Producer desires for certain of its gas (the “Lift Gas”) produced from those wells more
particularly described in Exhibit A attached hereto and made a part hereof (the “Mash Unit”), which
wells are connected to the Gathering System at the Gathering System Delivery Point more
particularly described in Exhibit B attached hereto and made a part hereof, to be redelivered to
Producer from the Facilities to the Mash Unit Redelivery Point (defined below).

     C. Gatherer owns a pipeline lateral which has the capacity to provide the service requested by
Producer and is willing to provide such service, but only on an interruptible basis, and Processor
is willing to consent to the redelivery of such Lift Gas from its Facilities on an interruptible
basis, for the fees and subject to the terms and conditions set forth herein and in the Agreement.

     NOW, THEREFORE, for good and valuable consideration and the mutual premises and covenants
contained herein, the adequacy, receipt and sufficiency of which are hereby acknowledged, the
Parties now desire to supplement and amend the terms of the Agreement, to be evidenced by this
Addendum, as follows:

     1. The following terms and definitions are hereby added to ARTICLE I of the Agreement:

     a) “Lift Gas” shall have the meaning ascribed in Recital B above.

     b) “Mash Unit” shall have the meaning ascribed in Recital B above.

     c) “Mash Unit Lateral” shall mean that portion of the Gathering System on which the
Lift Gas is delivered from Gatherer’s and/or Processor’s

 

 

Facilities to the Mash Unit Redelivery Point.

     d) “Mash Unit Redelivery Fee” shall mean the fee or, collectively, fees for redelivering the
Lift Gas via the Mash Unit Lateral to the Mash Unit Redelivery Point as more particularly described
below.

     e) “Mash Unit Redelivery Point” shall mean the point of interconnect between the Mash Unit
Lateral and Producer’s facilities for receipt of the Lift Gas located at the Mash Unit, whereby
Gatherer redelivers the Lift Gas to Producer, such point being also set forth on Exhibit B attached
hereto.

     2. The definition of “Gathering System” in the Agreement is hereby supplemented to the extent
necessary to include, and such term shall be deemed to encompass, the Mash Unit Lateral and such
pipelines, equipment, roads, utilities and other facilities related or connected thereto, including
all easements and surface sites on which the foregoing may be located, but excluding any meters,
equipment or other facilities owned or operated by Processor or otherwise deemed to be part of the
Plant.

     3. Gatherer shall, subject to reimbursement of all of the associated costs, take all steps
necessary to connect the Mash Unit Lateral to the Mash Unit at the Mash Unit Redelivery Point.
Upon completion of such connection, Gatherer shall submit to Producer an invoice for all costs
incurred in accomplishing the foregoing and Producer agrees to pay such invoice within 30 days
following receipt thereof.

     4. Gatherer, at Producer’s expense, shall install, construct and equip all meters and
facilities necessary to measure the Lift Gas at the Mash Unit Redelivery Point. Gatherer, at its
own expense, shall maintain and operate such meters for so long as such Lift Gas service is
provided by Gatherer to Producer. Section 9.10 of the Agreement shall also apply to such meters at
any Redelivery Point.

     5. Gatherer agrees that, subject to the terms hereof (inclusive of the Agreement), it will, on
an interruptible basis as determined in its or to the extent such service impacts the Plant, then
in Processor’s, sole discretion, redeliver the Lift Gas from its Facilities to the Redelivery
Point.

     6. In the event and for so long as Gatherer redelivers Lift Gas to Producer as provided
herein, Producer shall pay to Gatherer a redelivery fee or fees of $0.40 per MMBTU of Lift Gas (the
“Redelivery Fee”) redelivered to Producer. Notwithstanding the foregoing, Producer agrees that
the Redelivery Fee payable by producer shall never be less than the actual cost to perform such
Lift Gas redelivery service as provided herein. On each Escalation Date, the Redelivery Fee will
increase by a percentage equal to the CPI Adjustment.

     7. In addition to the Redelivery Fee, Producer will provide the fuel required for redelivering
the Lift Gas to the Redelivery Point.

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     8. The indemnity obligations set forth in ARTICLE XVII of the Agreement are amended and
supplemented to the extent necessary and sufficient to give effect to the following, which is
hereby added:

          To Section 17.1: “If Lift Gas is redelivered to Producer as provided herein, then, in
that event, Gatherer shall be solely liable for and in control and possession of such Lift Gas from
the time such Lift Gas exits Gatherer’s or Processor’s Facilities until redelivered to Producer at
the Redelivery Point, whereupon Producer shall again be in control and possession and bear the risk
of loss of such Lift Gas.”

          To Section 17.2: “If Lift Gas is redelivered to Producer as provided herein, then, in
that event and in accordance with the terms of Section 17.1 as amended hereby:

          a) PRODUCER AGREES THAT THE SCOPE OF PRODUCER’S INDEMNITY OBLIGATION IN FAVOR OF GATHERER AND
PROCESSOR AND THEIR RESPECTIVE EMPLOYEES, AGENTS AND CONTRACTORS SET FORTH IN THIS SECTION 17.2
SHALL APPLY, EXTEND TO AND ENCOMPASS PRODUCER’S OWNERSHIP, POSSESSION AND CONTROL OF THE LIFT GAS
AFTER THE LIFT GAS HAS PASSED THROUGH THE REDELIVERY POINT AND PRIOR TO THE TIME THAT GAS,
INCLUDING SUCH LIFT GAS, PASSES THROUGH THE GATHERING SYSTEM DELIVERY POINT; and

          b) GATHERER AGREES THAT THE SCOPE OF GATHERER’S INDEMNITY OBLIGATION IN FAVOR OF PRODUCER AND
ITS EMPLYEES, AGENTS AND CONTRACTORS SET FORTH IN THIS SECTION 17.2 SHALL APPLY, EXTEND TO AND
EXCOMPASS GATHERER’S POSSESSION AND CONTROL OF THE LIFT GAS FROM THE TIME SUCH LIFT GAS EXITS
GATHERER’S OR PROCESSOR’S FACILITIES UNTIL SUCH LIFT GAS PASSES THROUGH THE REDELIVERY POINT.”

     9. The interruptible service subject to this Addendum may be terminated by Gatherer for any
reason in its sole discretion upon 30 days notice to Producer.

     Except as supplemented and amended hereby, the terms and provisions of the Agreement shall
remain in full force and effect.

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     EXECUTED effective the day and year first written above.

	 	 	 	 	 	 	 	 	 	 	 	 	 
	PRODUCER:	 	GATHERER:	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	Quicksilver Resources Inc.	 	Cowtown Pipeline Partners L.P.	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	By:	 	Quicksilver Gas Services Operating GP	 	 
	 	 	 	 	 	 	 	 	LLC, its general partner	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	By:	 	/s/ Stan G. Page	 	By:	 	/s/ Clifford Rupnow	 	 
	 	 	 	 	 	 	 	 	 
	 

	 	Name:
	 	Stan G. Page
	 	 	 	Name:
	 	Clifford Rupnow	 	 
	 

	 	Title:
	 	V.P. U.S. Operations
	 	 	 	Title:
	 	VP Business Development and Administration	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	PROCESSOR:	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	Cowtown Gas Processing Partners L.P.	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	By:	 	Quicksilver Gas Services Operating GP	 	 
	 	 	 	 	 	 	 	 	LLC, its general partner	 	 
	 
	 	 	 	 	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	By:	 	/s/ Clifford Rupnow	 	 
	 	 	 	 	 	 	 	 	 	 	 
	 

	 	 	 	 	 	 	 	Name:
	 	Clifford Rupnow	 	 
	 

	 	 	 	 	 	 	 	Title:
	 	VP Business Development and Administration	 	 

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EXHIBIT A

to

ADDENDUM AND AMENDMENT

MASH UNIT LATERAL

This Exhibit A is attached to that certain Addendum and Amendment to Gas Gathering and Processing

Agreement Mash Unit Lateral by and among Quicksilver Resources Inc., as Producer and Cowtown

Pipeline Partners L.P., as Gatherer, and Cowtown Gas Processing Partners L.P., as Processor.

The following wells located in Hood County, Texas:

	 	 	 	 	 
	Well Name	 	Well ID
	 
	 
	 	 	 	 
	HAWKEYE 1H

	 	 	42.1021.001	 
	HAWKEYE 2H

	 	 	42.1021.011	 
	HAWKEYE 3H

	 	 	42.1021.024	 
	HOT LIPS 1H

	 	 	42.1021.002	 
	HOT LIPS 2H

	 	 	42.1021.028	 
	HOT LIPS 3H

	 	 	42.1021.029	 
	MAJOR BURNS 1H

	 	 	42.1021.006	 
	MAJOR BURNS 2H

	 	 	42.1021.025	 
	TRAPPER JOHN 1H

	 	 	42.1021.004	 
	TRAPPER JOHN 2H

	 	 	42.1021.005	 
	TRAPPER JOHN 4H

	 	 	42.1021.023	 
	COLONEL FLAGG 1H

	 	 	42.1021.007	 
	COLONEL FLAGG 2H

	 	 	42.1021.008	 
	COLONEL FLAGG 3H

	 	 	42.1021.017	 

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EXHIBIT B

to

ADDENDUM AND AMENDMENT

MASH UNIT LATERAL

This Exhibit B is attached to that certain Addendum and Amendment to Gas Gathering and Processing

Agreement Mash Unit Lateral by and among Quicksilver Resources Inc., as Producer and Cowtown

Pipeline Partners L.P., as Gatherer, and Cowtown Gas Processing Partners L.P., as Processor.

	 	 	 	 	 	 	 	 	 
	Redelivery Points
	Well Name	 	 	 	Well ID	 	Injection #
	HAWKEYE 1H

	 	INJ
	 	 	42.1021.001	 	 	TX 30993 INJ
	HAWKEYE 2H

	 	INJ
	 	 	42.1021.011	 	 	TX 31112 INJ
	HAWKEYE 3H

	 	INJ
	 	 	42.1021.024	 	 	TX 31462 INJ
	HOT LIPS 1H

	 	INJ
	 	 	42.1021.002	 	 	TX 30988 INJ
	HOT LIPS 2H

	 	INJ
	 	 	42.1021.028	 	 	TX 31588 INJ
	HOT LIPS 3H

	 	INJ
	 	 	42.1021.029	 	 	TX 31589 INJ
	MAJOR BURNS 1H

	 	INJ
	 	 	42.1021.006	 	 	TX 31007 INJ
	MAJOR BURNS 2H

	 	INJ
	 	 	42.1021.025	 	 	TX 31466 INJ
	TRAPPER JOHN 1H

	 	INJ
	 	 	42.1021.004	 	 	TX 30986 INJ
	TRAPPER JOHN 2H

	 	INJ
	 	 	42.1021.005	 	 	TX 30987 INJ
	TRAPPER JOHN 4H

	 	INJ
	 	 	42.1021.023	 	 	TX 31465 INJ
	COLONEL FLAGG 1H

	 	INJ
	 	 	42.1021.007	 	 	TX 31020 INJ
	COLONEL FLAGG 2H

	 	INJ
	 	 	42.1021.008	 	 	TX 31019 INJ
	COLONEL FLAGG 3H

	 	INJ
	 	 	42.1021.017	 	 	TX 31463 INJ

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