Dr Vahid Tavakoli is an Associate Professor at the University of Tehran, where he received his Ph.D. in Petroleum Geology in 2011. He has been a member of the Faculty of Petroleum Geology since 2012 and has been working on reservoir characterization of the Iranian hydrocarbon formations since 2003. His research interests focus on reservoir characterization using cores and wireline log data. He also has published more than 50 research papers on reservoir characterization, sequence stratigraphy, and log analysis. He is the author of the book Geological core analysis: application to reservoir characterization, published by Springer in 2018, and a chapter of Chemostratigraphy: Concepts, Techniques and Applications, published by Elsevier. He is the project manager and geology team leader of several reservoir evaluation projects, from coring to development planning. The Swedish Research Council awarded him and his team ca. 100,000 euros for the study of Holocene coresin central and east Iran. Vahid was selected as the first-ranked young geology researcher in the country and received the Young Geologist Award from the Iranian Academy of Sciences in 2018. He has also supervised several industrial projects at private oil service companies. He is currently investigating the causes and consequences of carbonate reservoir heterogeneity.

• Reservoir Heterogeneity: an Introduction.- Microscopic Heterogeneity.- Mesoscopic Heterogeneity.- Macroscopic Heterogeneity.- Dolomitic Reservoirs.- Petrophysical Evaluations.