Kelleher, 54, holds the position of Senior Vice President - Southern Division.  Prior to joining Devon in 1999, Kelleher served as exploration manager for PennzEnergy Company.  He began his professional career in 1976 with Tenneco Oil Company and has more than 30 years of energy industry experience.  Kelleher received a Bachelor of Science degree in geological engineering from Colorado School of Mines and a Master of Science degree in Geology from West Virginia University.