DR. D. ANDY LINK is an active consultant and instructor in Houston, Texas. His domestic and international oil industry experience spans more than 28 years, covering areas in North, South, and Central America, Europe, Asia, and Australia. His field experience extends from Alaska to Antarctica and South Africa. His teaching experience includes 24 years with OGCI/PetroSkills as well as lecturer positions at Northern Illinois University, Northeastern Illinois University, and the University of Wisconsin-Parkside. He is co-author of Exploration Methods for Sandstone received a Ph.D. in Geology from Northwestern University.