Steven W. Poston is a retired professor emeritus from Texas A&M University, with more than 12 years of teaching experience at the graduate and undergraduate levels in applied reservoir engineering and subsurface description of petroleum reservoirs. Poston’s industry experience includes more than 14 years in a variety of subsurface engineering, geological, and managerial roles for Gulf Oil Exploration and Production Company in Nigeria, Pennsylvania, Louisiana, and Texas. Poston has been the coauthor of numerous industry technical papers; he also has served on a number of SPE committees and was a coauthor of the SPE book Overpressured Gas Reservoirs.

Bobby D. Poe Jr. is currently the reservoir and production engineering advisor in the Schlumberger Data and Consulting Services interpretation development support group in Houston. He has more than 25 years of industrial experience in all levels of well performance and reservoir engineering analyses. Poe holds a PhD degree in petroleum engineering from Texas A&M University; he has served on a number of SPE Re print Series and editorial committees and as a coauthor of numerous technical articles related to production analyses. Poe holds numerous US and international patents related to production engineering analyses and interpretation techniques.