Sewell, 47, holds the position of Vice President – Tax. Prior to joining Devon in 1991, Sewell spent four years with Hadson Corporation, an independent oil and gas producer and natural gas transmission company, where she served as the tax manager from 1987 to 1991. Sewell began her professional career in 1983 with the public accounting firm of Ernst and Whinney (now Ernst & Young). She holds a Bachelor of Science degree from the University of Central Oklahoma, majoring in accounting. She is a Certified Public Accountant and a member of the American Petroleum Institute and the American Exploration and Production Council.