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                       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

                                 April 28, 2004

                              ULTRA PETROLEUM CORP.
             (Exact name of registrant as specified in its charter)

    Yukon Territory, Canada              0-29370                   N/A
(State or other jurisdiction of      (Commission File        (I.R.S. Employer
incorporation or organization)            Number)         Identification Number)

        (363 North Sam Houston Pkwy, E., Suite 1200., Houston, TX 77060)

                                 (281-876-0120)

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Item 12.  Announcement re earnings conf call



                                   SIGNATURES

      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.

[April 28, 2004]                                           By: /s/ David Russell
                                                               -----------------
                                                               David Russell



PRESS RELEASE:  Webcast Alert:  Ultra Petroleum Corp.  Announces Its 1st Quarter
Earnings Conference Call Webcast

[2004-04-28]

      Webcast Alert:  Ultra Petroleum Corp.  Announces Its 1st Quarter  Earnings
      Conference Call Webcast

            HOUSTON,  April 20  /PRNewswire-FirstCall/  -- In  conjunction  with
      Ultra  Petroleum  Corp.'s (Amex:  UPL) First Quarter  Earnings  Conference
      Call, you are invited to listen to its webcast that will be broadcast live
      over the Internet on Wednesday, April 28, 2004 at 10:30 AM Central.

            What: Ultra Petroleum Corp.'s First Quarter Earnings Conference Call
                  Webcast

            When: Wednesday, April 28, 2004 at 10:30 AM Central

            Where: http://www.firstcallevents.com/service/ajwz405110604gf12.html
                  or www.ultrapetroleum.com

            How:  Live over the  Internet  -- Simply log on to the web at either
                  of the addresses above

            Contact: David Russell at 281-876-0120 x 302

            If you are unable to participate  during the live webcast,  the call
      will be archived at  www.ultrapetroleum.com  . To access the replay, click
      on the home page.

            Ultra  Petroleum  is  an  independent,  exploration  and  production
      company  focused on  developing  its long life natural gas reserves in the
      Green  River  Basin of Wyoming,  and oil  reserves in Bohai Bay,  offshore
      China.  Ultra is listed on the American  Stock  Exchange  under the ticker
      "UPL" with 74,923,168 shares outstanding at the time of this release.

            (Minimum  Requirements  to listen to  broadcast:  The Windows  Media
      Player          software,          downloadable          free         from
      http://www.microsoft.com/windows/windowsmedia/EN/default.asp  and at least
      a  28.8Kbps  connection  to  the  Internet.  If  you  experience  problems
      listening to the broadcast, send an email to webcastsupport@tfprn.com .)

  SOURCE  Ultra Petroleum Corp.
      /CONTACT:  David Russell of Ultra Petroleum Corp., +1-281-876-0120 x 302/
      /Photo:  NewsCom: http://www.newscom.com/cgi-bin/prnh/20020226/DATU029LOGO
               AP Archive:  http://photoarchive.ap.org
               PRN Photo Desk, photodesk@prnewswire.com /
      /Web site:  http://www.ultrapetroleum.com /
      /Audio:  http://www.firstcallevents.com/service/ajwz405110604gf12.html /
      (UPL)

         Dow Jones Newswires
         04-28-04 0801ET
       Copyright (C) 2004 Dow Jones & Company, Inc. All Rights Reserved.

      Subject Codes: I/OIS, I/XDJGI, N/DJIN, N/DJN, N/DJWB, N/CAC, N/CNF, N/CNW,
      N/DJWI,  N/ERN,  N/PRL,  N/TPCT,  M/ENE,  M/NND, M/TPX, R/NME, R/TX, R/US,
      R/USS

      Company Codes: UPL

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