Atwood Oceanics Elects New Director

Atwood Oceanics, Inc. reports that on June 1, 2006, its Board of Directors elected James R. Montague as a director of the Company, with such election to be effective June 2, 2006. Mr. Montague was elected to fill a vacancy on the Board of Directors, so that after the election of Mr. Montague, the Board of Directors has seven members.

Mr. Montague, 59, resides in Houston, Texas and is a director of Penn Virginia Resource GP, LLC, the general partner of Penn Virginia Resource Partners, LP, a publicly traded master limited partnership which manages coal properties and gathers and processes natural gas, and a director of Magellan GP, LLC, the general partner of Magellan Midstream Partners, LP, a publicly traded master limited partnership formed to own, operate and acquire a diversified portfolio of energy assets. Mr. Montague serves as a member of the Audit and Compensation Committees and Chairman of the Conflicts Committee of both Penn Virginia Resource GP, LLC and Magellan GP, LLC. Mr. Montague is also the Chairman of Memorial Hermann Healthcare System of Houston and is presently the non-executive Chairman of Davis Petroleum Corporation, a privately held oil and gas exploration and production company in Houston. Prior to 2002, Mr. Montague was the President of Encana Gulf of Mexico, LLC, a subsidiary of Encana Corporation. He was President of IP Petroleum Company, a subsidiary of International Paper Company, from 1989 to 2001.