Öz Yilmaz

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Öz Yilmaz
Oz Yilmaz headshot.jpg
BSc university University of Missouri-Rolla
MSc university Stanford University
PhD university Stanford University

Öz Yilmaz received the Virgil Kauffman Gold Medal in 1991 for his one-volume text Seismic Data Processing, associated video tapes and publications in prestack partial migration, multiple suppression, velocity analysis, statics and reservoir analysis. However, the current Honors and Awards Committee concluded that the expanded version of his labor-of-love, his two-volume treatment retitled Seismic Data Analysis, also deserves recognition. These two volumes are on bookshelves around the world in offices of practicing geophysicists and remain a significant contribution to our profession. We also note that Öz has continued to publish regularly in both Geophysics and The Leading Edge since the time of his previous recognition.

Öz was declared an Honorary Member of SEG in 2011.

Biography Citation for Honorary Membership

Originally contributed by Jon Claerbout

Öz Yilmaz received his BS in geology and geophysics from the University of Missouri-Rolla in 1970 and MS in geophysics in rock physics and earthquake seismology from Stanford University with Amos Nur in 1972. Amos writes, “Long before the emergence of shale gas, as a student at Stanford he derived the equations that modeled for the first time the nonlinear effects of effective pressure (confining minus pore) on hydraulic permeability. He showed in micro-cracked rocks that pore-pressure distribution deviates significantly from standard diffusion and becomes more like a pressure front.”

After five years at Turkish Petroleum Company, Öz earned his PhD geophysics with me at Stanford in 1979 with work on dip moveout in exploration seismology. I’ve never had a student finish so fast! Öz has been working in the seismic industry for 38 years including 12 years at Western Geophysical (Houston and London), 4 years at Schlumberger (London), 3 years at Paradigm Geophysical (London), and finally, he founded Anatolian Geophysical (Istanbul) in 2001, providing services in seismic data analysis and project management. He has participated with numerous organizations in Turkey. Öz became Chief Technology Officer to GeoTomo in Houston in 2002 to develop workflow products for processing, inversion, and interpretation of land seismic data. In the last decade, Öz has taken his oil-industry experience in seismic data analysis to the diverse fields of earthquake seismology and geotechnical site investigations. Öz launched a pioneering project in Turkey that included evaluating seismic results and borehole measurements at about 200 sites.

Fred Hilterman writes, “‘As an enthusiastic history buff, Öz has expanded his engineering activities to include GPR surveys for archeological investigation of ancient buildings. One can visualize Öz “pontificating” his GPR findings with tidbits of ancient history to dramatize the discovery.” Fred continues, “From his first edition of Seismic Data Processing in 1988, his work has withstood the scrutiny of our professionals and it continues to be SEG’s second biggest seller after Sheriff ’s dictionary. It is an outstanding example of SEG’s objective to promote the science of geophysics and as such, it is definitely a distinguished contribution that in itself warrants exceptional recognition. An informal publication that filled a big need for me and for academia generally, was Öz’s preparation (with D. Cumro) and distribution of raw data of a collection of 40 seismic shot profiles from around the world. Academics often reach out to the “real world” and Öz provided exactly what they needed. My what a diverse world we have! These 40 shot records are sprinkled throughout my books and the many papers and theses done at Stanford and elsewhere. Steve Doherty writes, “Öz has put on an uncountable number of schools and presentations in both public forums and in local society meetings and in government and private organizations all over the globe.” Ken Larner writes, “What an accomplishment it was for him to have created (his books) without skipping a beat in his many obligations while in the research group at Western Geophysical. He was successful (no small feat) in gaining approval from Western to include all those marvelous examples in his book. Öz is a teacher, entrepreneur, researcher. He never stops.”

John Etgen writes, “There’s a long list of things he’s been influential on from a technical perspective, his books, his wide-ranging knowledge of processing in general to his latest efforts around difficult land data and the near surface. I think what people know him best for are his presentations... always entertaining, always engaging. He was the first one to teach me the difference between ‘eating’ and ‘dining.’ He never ‘dines’ without visiting the kitchen!”

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