लेखक: Richard L. Christiansen

John R. Fanchi holds the Ross B. Matthews Chair of Petroleum Engineering at Texas Christian University in Fort Worth, Texas. He has taught at the Colorado School of Mines, and has industrial experience with major oil and gas companies including Chevron and Marathon. He is a Distinguished Member of the Society of Petroleum Engineers. Richard L. Christiansen has taught Petroleum Engineering at the University of Utah and Colorado School of Mines. He has broad industrial experience as a petroleum engineer in independent and major oil and gas companies. He has a Ph.D. in chemical engineering from the University of Wisconsin.