A. Glenn Patterson, 68, who was one of the founders of Patterson-UTI Energy Inc. (PTEN), has died. Patterson served as president and COO of the Houston company from 1978 until he retired in May 2006 and was considered instrumental in growing a one-rig drilling company into one of the largest oilfield services contractors in the world. After graduating in Texas from San Angelo State University with a bachelor of science degree, he taught high school and refereed basketball in San Antonio. In 1978 Patterson founded Patterson Drilling Co. with brother-in-law Cloyce Talbott, who served as CEO. The company went public in 1993 and merged with UTI Drilling in 2001. "Glenn was a charismatic leader, company-builder and friend to all who knew him," PTEN Chairman Mark S. Siegel said. "He was universally respected both within our company and in our industry." Patterson is survived by his wife Janeen Patterson, as well as two sons and their wives, and five grandchildren.