Harry Dembicki, Jr., PhD, is a retired petroleum geochemistry whose career in the corporate O&G industry spanned nearly 40 years. Dr. Dembicki’s areas of expertise in geochemistry include the application of biomarker technology, basin modeling, utilizing micro- and macro-seepage data both onshore and offshore, pyrolysis gas chromatography and thermal extraction-gas chromatography, mapping regional trends in source rock potential, and well site geochemical tools for both source rock and reservoir evaluation. Dr. Dembicki has published 23 papers on various aspects of organic and petroleum geochemistry, has made 27 oral and 13 poster presentations at conferences, and has two U.S. patents on instrument design. He serves as a reviewer for AAPG Bulletin, AAPG Special Publications, Organic Geochemistry, Geochimica et Cosmochimica Acta, Journal of Marine and Petroleum Geology, Chemical Geology, Applied Geochemistry, Computers & Geosciences, Journal of Asian Earth Sciences, and Journal of Hazardous Materials. He has also taught 46 internal courses on petroleum geochemistry and basin modeling.