SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* MERCURY EXPLORATION CO (Last) (First) (Middle) 777 WEST ROSEDALE SUITE 300 (Street) FORT WORTH TX 76104 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol QUICKSILVER RESOURCES INC [ KWK ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 10/06/2006
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $.01 par value	10/06/2006		J(1)		4,500(2)	D	$31.73	0	D(3)
Common Stock, $.01 par value	10/06/2006		J(1)		4,500(2)	A	$31.73	13,117,935	D(4)
Common Stock, $.01 par value	10/06/2006		J(1)		13,117,935(2)	D	$31.73	0	D(4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* MERCURY EXPLORATION CO (Last) (First) (Middle) 777 WEST ROSEDALE SUITE 300 (Street) FORT WORTH TX 76104 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Mercury Production CO (Last) (First) (Middle) 777 WEST ROSEDALE SUITE 300 (Street) FORT WORTH TX 76104 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. On October 6, 2006, Mercury Production Company transferred 4,500 shares of Quicksilver Resources common stock to its wholly owned subsidiary, Mercury Exploration Company, as a contributon to capital. Immediately thereafter Mercury Exploration Company transferred 13,117,935 shares of Quicksilver Resources common stock to Quicksilver Energy, L.P. in exchange for a limited partnership interest therein. The amount appearing in the price column of column 4 of Table I is the average of the high and low sales prices of a share of Quicksilver Resources common stock on the New York Stock Exchange on October 6, 2006.

2. On June 30, 2004, the common stock of Quicksilver Resources was split two-for-one, effected in the form of a stock dividend, resulting in Mercury Production Company's acquisition of 1,500 additional shares of common stock and Mercury Exploration Company's acquisition of 4,602,145 additional shares of common stock. On June 30, 2005, the common stock of Quicksilver Resources was split three-for-two, effected in the form of a stock dividend, resulting in Mercury Production Company's acquisition of 1,500 additional shares of common stock and Mercury Exploration Company's acquisition of 4,371,145 additional shares of common stock.

3. These shares are owned directly by Mercury Production Company.

4. These shares are owned directly by Mercury Exploration Company, a ten percent owner of issuer, and indirectly by Mercury Production Company, the parent corporation of Mercury Exploration Company.

Remarks:

Exhibit 99-Form 4 Joint Filer Information

	/s/ Mercury Exploration Company	10/10/2006
	Mercury Production Company	10/10/2006
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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