Reminder - Webcast Alert: Ultra Petroleum Corp. Announces Second Quarter 2007 Earnings Webcast.

HOUSTON, Aug. 8 /PRNewswire-FirstCall/ -- Ultra Petroleum Corp. announces the following Webcast:

  What:      Ultra Petroleum Corp. Second Quarter 2007 Earnings Webcast  When:      August 8, 2007 @ 11:00 a.m. Eastern  Where:     http://www.videonewswire.com/event.asp?id=41260  How:       Live over the Internet -- Simply log on to the web at the             address above.  Contact:   Kelly Whitley, kwhitley@ultrapetroleum.com, 281-876-0120

If you are unable to participate during the live webcast, it will be archived at http://www.ultrapetroleum.com/ .

Ultra Petroleum is an independent, exploration and production company focused on its core properties in the Green River Basin of southwestern Wyoming: the Pinedale and Jonah Fields. The company produces oil in the shallow waters of Bohai Bay, China and is in the early exploration stages in the Appalachian Basin in Pennsylvania. Ultra Petroleum is listed on the American Stock Exchange under the symbol "UPL" with 152,167,702 shares outstanding as of June 30, 2007.

This release can be found at http://www.ultrapetroleum.com/

CONTACT: Kelly Whitley of Ultra Petroleum Corp., +1-281-876-0120, kwhitley@ultrapetroleum.com

Web site: http://www.ultrapetroleum.com/