Don W. Green is Emeritus Distinguished Professor of Chemical and Petroleum Engineering at the University of Kansas. His career began in 1962 in the Production Research Division of Continental Oil Company before he joined the University of Kansas in 1964. At the University of Kansas, Green was chair of his department from 1970 to 1974 and from 1996 to 2000. He was codirector of the Tertiary Oil Recovery Project with G. Paul Willhite from 1974 to 2007. Green has authored or coauthored 70 refereed publications, more than 100 technical meeting presentations, is editor of the 6th, 7th and 8th editions of Perry’s Chemical Engineers’ Handbook, and is currently editing the 9th edition. He holds a BS degree in petroleum engineering from the University of Tulsa, and MS and PhD degrees in chemical engineering from the University of Oklahoma. Green has won numerous teaching awards at the University of Kansas, including the Honors for Outstanding Progressive Educator (HOPE) Award and the Chancellor’s Club Career Teaching Award. He has also been featured as an outstanding educator in the American Society for Engineering Education journal Chemical Engineering Education. Green was an SPE Distinguished Lecturer, recipient of the SPE Distinguished Achievement Award for Petroleum Engineering Faculty, the Improved Oil Recovery (IOR) Pioneer Award and was named an Honorary Member of SPE in 2007. He is also a Fellow of the American Institute of Chemical Engineers. Green received the University of Kansas School of Engineering Distinguished Engineering Service Award (DESA) in 2015, and was named to the University of Tulsa College of Engineering and Natural Sciences Hall of Fame in 2017.

G. Paul Willhite is the Ross H. Forney Distinguished Professor of Chemical and Petroleum Engineering at the University of Kansas, located in Lawrence, Kansas. He has been a member of the faculty since 1969, and has served as chair of the department from 1988 to 1996 and as interim chair from 2003 to 2004. In 1974, Willhite cofounded the Tertiary Oil Recovery Project and served as codirector from 1974 to 2009. From 1962 to 1969, he worked in the Production Research Division of Continental Oil Company, Ponca City, Oklahoma. Willhite is the author of the SPE textbook Waterflooding, published in 1986, and the coauthor of the SPE textbook Enhanced Oil Recovery, originally published in 1998. He holds a BS degree from Iowa State University (1959) and a PhD degree from Northwestern University (1962), both in chemical engineering. Willhite is a Distinguished Member of SPE. He is a recipient of the 1981 SPE Distinguished Achievement Award for Petroleum Engineering Faculty, the 1986 Lester C. Uren Award, and the 2001 SPE John Franklin Carll Award. In 1995, Willhite received the Professional Achievement Citation in Engineering from the College of Engineering, Iowa State University. In 2004, he received the IOR Pioneer Award at the SPE/DOE Improved Oil Recovery Symposium. Willhite was elected to the National Academy of Engineering in 2006, and received the Anson Marston Medal from the College of Engineering at Iowa State University in 2009. He was elected as an Honorary Member of SPE-AIME in 2012, and was inducted into the Alumni Hall of Fame in the Department of Chemical and Biological Engineering at Iowa State University in 2013.