8-K

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 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) May 21, 2002 (May 21, 2002)


                           MARKWEST HYDROCARBON, INC.
             (Exact name of registrant as specified in its charter)


         DELAWARE                    1-11566                  84-1352233
      (State or other       (Commission File Number)       (I.R.S. Employer
      jurisdiction of                                   Identification Number)
     incorporation or
       organization)

          155 INVERNESS DRIVE WEST, SUITE 200, ENGLEWOOD, CO 80112-5000
                    (Address of principal executive offices)

        Registrant's telephone number, including area code: 303-290-8700



ITEM 5.  OTHER EVENTS

        On May 21, 2002, MarkWest Hydrocarbon, Inc. issued a press release
announcing an initial public offering of two million one hundred thousand
(2,100,000) of its common units, representing limited partner interests, of
MarkWest Energy Partners, L.P. at a price of $20.50 per unit. A copy of such
press release is attached hereto as Exhibit 99.1.

ITEM 7. FINANCIAL STATEMENTS AND EXHIBITS

       (C)     EXHIBITS
               --------
               99.1   MarkWest Hydrocarbon, Inc. Press Release dated May 21,
2002.



                                    SIGNATURE


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


                                           MARKWEST HYDROCARBON, INC.
                                           (Registrant)

Date: May 21, 2002                     BY:     /s/ GERALD A. TYWONIUK
                                           -----------------------------------
                                           Gerald A. Tywoniuk
                                           Senior Vice President, Chief
                                           Financial Officer and Director
                                           (On Behalf of the Registrant and
                                           as Principal Financial and
                                           Accounting Officer)




                                  EXHIBIT INDEX




 EXHIBIT NUMBER                         DESCRIPTION
 --------------                         -----------
               
           99.1   - MarkWest Hydrocarbon, Inc. Press Release dated May 21, 2002.

EX-99.1

                                                                   EXHIBIT 99.1

  MARKWEST ENERGY PARTNERS, L.P., ANNOUNCES PRICING OF INITIAL PUBLIC OFFERING

      DENVER--May 21, 2002--MarkWest Energy Partners, L.P. (AMEX: MWE),
announced today that it has priced its initial public offering of 2,100,000
common units at $20.50 per unit, for total gross proceeds of $43,050,000. The
underwriters have a 30-day option to purchase up to 315,000 additional common
units at the same price. The common units will trade on the American Stock
Exchange under the symbol "MWE."

      Headquartered in Englewood, Colorado, MarkWest Energy Partners'
business includes the midstream assets in Kentucky, West Virginia and
Michigan formerly owned by MarkWest Hydrocarbon, Inc. These assets consist of
five gas processing plants, a natural gas liquids pipeline system, and a
fractionator in Appalachia, and a gas gathering pipeline and associated
facilities in Michigan. Following the offering, MarkWest Hydrocarbon will own
57.2 percent of the partnership through its ownership of 2,975,136
subordinated units, as well as a 91.4 percent ownership interest in the
general partner, which owns a 2 percent interest in the partnership. MarkWest
Hydrocarbon, Inc., trades on the American Stock Exchange (AMEX: MWP).

      The underwriters for the offering are A.G. Edwards & Sons, Inc.; RBC
Capital Markets; and McDonald Investments Inc.

      This release shall not constitute an offer to sell or the solicitation
of an offer to buy, nor shall there be any sale of these securities in any
jurisdiction in which such offer, solicitation or sale would be unlawful
prior to registration or qualification under the securities laws of such
jurisdiction.

      A copy of the final prospectus relating to the offering may be obtained
by contacting the investor relations department:

                        Investor Relations
                        155 Inverness Drive West Suite 200
                        Englewood, Colorado 80112
                        (303) 290-8700 ext. 180

                                      ###