Joseph Eustace, Pioneer Drilling, Elected as Chairman – IADC Well Servicing Committee

Houston, 7 August 2008 – The International Association of Drilling Contractors (IADC) has announced that Joseph Eustace, Executive Vice President and President of Production Services Division of Pioneer Drilling Company, was elected Chairman of the IADC Well Servicing Committee.

Joseph Eustace was appointed to his present position at Pioneer on March 1, 2008. Before
joining Pioneer Drilling Company, Mr. Eustace served as President of WEDGE Oil and Gas
Services since 2004. Prior to 2004, he served as Group Vice President for Key Energy Services
from 1998 to 2004, and as Vice President of Operations for Dawson Production Services from
1982 until Key Energy Services acquired Dawson Production Services in 1998. Mr. Eustace
holds a degree in Agribusiness from Texas Tech University.

Dr. Lee Hunt, IADC President, stated “IADC is privileged to have Joe chair the Well Servicing
Committee. As the Committee pushes forward, his expertise and leadership will help shape how
our industry works with other organizations to improve well servicing for the drilling industry.”
The Well Servicing Committee was developed to advance the interests of the IADC well-servicing
members in health, safety and environment (HSE), well control, training, regulation/legislation and
other areas where IADC’s expertise proves critical to the drilling industry. The Committee’s
charter is to establish processes and programs that work independently and in collaboration with
other key industry organizations.

About IADC

IADC is dedicated to enhancing the interests of oil-and-gas and geothermal drilling contractors worldwide. IADC’s contract-drilling members own most of the world’s land and offshore drilling units and drill the vast majority of the wells that produce the planet’s oil and gas. IADC’s membership also includes oil-and-gas producers, and manufacturers and suppliers of oilfield equipment and services. Founded in 1940, IADC’s mission is to improve industry health, safety and environmental practices; advance drilling and completion technology; and champion responsible standards, practices, legislation and regulations that provide for safe, efficient and environmentally sound drilling operations worldwide. IADC holds Accredited Observer status at the International Maritime Organization and the International Seabed Authority, specialized agencies of the United Nations. The Association is a leader in developing standards for industry training, notably its Well Control Accreditation Program (WellCAP)® and rig-floor orientation program, RIG PASS®. IADC is headquartered in Houston and has offices in Washington D.C., the Netherlands, Thailand, and the United Arab Emirates, as well as chapters in the UK, Venezuela, Brazil, Australasia, South Central Asia, Southeast Asia, the Middle East and across the United States. For more information, visit the IADC website at www.iadc.org.