SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* MARKWEST ENERGY PARTNERS L P (Last) (First) (Middle) 1515 ARAPAHOE ST. TWR 2, STE 700 (Street) DENVER CO 80202 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 09/05/2007	3. Issuer Name and Ticker or Trading Symbol MARKWEST HYDROCARBON INC [ MWP ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) X Form filed by One Reporting Person Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	0(1)(2)	I	See footnote(1)(2)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. On September 5, 2007, MarkWest Energy Partners, L.P. (the "Partnership") entered into an Agreement and Plan of Redemption and Merger (the "Merger Agreement") by and among the Partnership, MarkWest Hydrocarbon, Inc. ("MarkWest Hydrocarbon") and MWEP, L.L.C., a wholly owned subsidiary of the Partnership, pursuant to which MarkWest Hydrocarbon will be merged into the Partnership. In connection with the Merger Agreement, the Partnership also entered into a Voting Agreement (the "Voting Agreement") with John M. Fox and MWHC Holding, Inc. Although the Partnership may, by virtue of the Voting Agreement, be deemed beneficial owner pursuant to Section 13(d) of the Securities Exchange Act of 1934 (the "Act") of the shares of MarkWest Hydrocarbon's common stock beneficially owned by John M. Fox and MWHC Holdings, Inc., the Partnership has no pecuniary interest in such shares.

2. Pursuant to Rule 16a-1(a)(4) under the Act, the Partnership hereby states that this Initial Statement of Beneficial Ownership of Securities on Form 3 shall not be deemed an admission that it is, for the purposes of Section 16 of the Act or otherwise, the beneficial owner of any equity securities of MarkWest Hydrocarbon and such beneficial ownership is expressly disclaimed. For additional information regarding the Merger Agreement and the Voting Agreement, please see the Schedule 13D filed by the Partnership with the Securities and Exchange Commission on September 13, 2007.

	/s/ Andrew L. Schroeder, Vice President and Treasurer	09/13/2007
	** 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 5 (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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