Allis-Chalmers Energy to Participate in the Johnson Rice Energy Conference

Allis-Chalmers Energy Inc. (NYSE: ALY) today announced that it will be participating in the Johnson Rice Energy Conference to be held October 6-8, 2009.

Micki Hidayatallah, Chairman and Chief Executive Officer and Victor M. Perez, Chief Financial Officer of Allis-Chalmers Energy, are scheduled to make a presentation on Wednesday, October 7, 2009, at approximately 1:30 pm Central time. To listen to the live audio webcast and view Allis-Chalmers’ slideshow, visit the Company’s website at http://www.alchenergy.com. A replay of the webcast will be available shortly after the presentation is concluded and will be archived for replay on the Company’s website until October 9, 2009.

About Allis-Chalmers

Allis-Chalmers Energy Inc. is a Houston-based multi-faceted oilfield services company. Allis-Chalmers provides services and equipment to oil and natural gas exploration and production companies, domestically primarily in Texas, Louisiana, New Mexico, Oklahoma, Arkansas, offshore in the Gulf of Mexico, and internationally, primarily in Argentina, Brazil and Mexico. Allis-Chalmers provides directional drilling services, casing and tubing services, underbalanced drilling, production and workover services with coiled tubing units, rental of drill pipe and blow-out prevention equipment, and international drilling and workover services. For more information, visit Allis-Chalmers’ website at http://www.alchenergy.com or request future press releases via email at http://www.b2i.us/irpass.asp?BzID=1233&to=ea&s=0.