Dr. Oliver C. Mullins is a Science Advisor in Schlumberger. He is the primary originator of Downhole Fluid Analysis (DFA) in well logging. Dr. Mullins also leads an active research group in petroleum science leading to the Yen-Mullins model of asphaltenes and the FHZ EoS. His current interests include utilizing DFA technology and new asphaltene science to perform novel reservoir evaluation. This work has clarified the reservoir fluid geodynamic processes the give rise to various fluid gradients and tar deposition. He has won several awards including the SPWLA Gold Medal for Technical Achievement. He authored the award-winning book The Physics of Reservoir Fluids; Discovery through Downhole Fluid Analysis and has been Distinguished Lecturer 6 times for SPWLA and SPE. He has co-edited 3 books and coauthored 13 chapters on asphaltenes and related topics. He has coauthored 250 publications, ~1⁄2 on petroleum science, ~1⁄2 on applications, and has coinvented 109 allowed US patents. He has accumulated 11,900 citations on Google Scholar. He is Editor of Petrophysics, Fellow of two professional societies and is Adjunct Professor of Petroleum Engineering at Texas A&M University.