Klaas Koster is an Oxy Fellow and their Worldwide Chief Geophysicist. He started his career at Amoco’s research center in Tulsa as acquisition and processing geophysicist after graduating with a PhD from Delft University. Klaas then worked for Shell as quantitative interpretation geophysicist and time-lapse seismic specialist in The Hague, Stavanger, Perth, and New Orleans. He then became the development manager for Apache in Aberdeen and later transferred to Apache’s head office in Houston. He next spent a few years building Murphy’s technical capabilities before he joined Oxy in 2016. Klaas served as President of the SEG, GSH and ASEG.