Towards wave-equation imaging and velocity estimation

Sirgue, L. , and Pratt, R. G. , 2004, Efficient waveform inversion and imaging: A strategy for selecting temporal frequencies: Geophysics, 69, 231-248. Symes, W. W. , and Carrazone, J. J., 1991, Velocity inversion by differential semblance optimization: Geophysics, 56, 654-663. Tarantola, A. , 1986, A strategy for nonlinear elastic inversion of seismic reflection data: Geophysics, 51, 1893-1903. Trad, D. , Deere, J. and Cheadle, S. , 2005, Understanding Land Data Interpolation, 75th Ann. Internat. Mtg: Soc. of Expl. Geophys. , Expanded Abstracts (SPNA 1.6). Samuel Gray received a B.Sc. (1970) fro m G e o rgetown University and a Ph.D (1978) in mathematics from the University of Denver. Between 1978 and 1982 he worked at the US Naval R e s e a rch Lab in Washington, DC, and was a faculty member at General Motors Institute (now Kettering University) in Flint, MI. From 1982 to 1999 he worked for Amoco and BP, first in Amoco’s Tulsa Research Center and later at Amoco Canada. While at Amoco and BP, he was a member of several teams building and using depth migration and velocity estimation tools. Since 1999, he has been at Veritas DGC, where he continues to work on depth imaging, velocity estimation, and seismic modeling techniques. He has served as Associate Editor of Geophysics, and he has co-authored papers which have won the Best Paper in Geophysics award (1999) and Honorable Mention for Best Paper in Geophysics (1998 and 2001). He has also won Best Paper awards at the 2004 CSEG and SEG conventions. Larry Lines received a B.Sc. (1971) and an M.Sc. (1973) in geophysics from the University of Alberta. He then received a PhD (1976) in geophysics from the University of British Columbia. In 1976, he joined Amoco, and from 1993-1997, he was the NSERC/Petro C a n a d a Chair in Applied Seismology at the Department of Earth Sciences, Memorial University of Newfoundland. He then joined the University of Calgary, Department of Geology and Geophysics in 1997 where he acted as Chair in Exploration Geophysics. Larry served as the Chair until 2002, when he then became the Department Head. He shared the award for GEOPHYSICS Best Paper in 1988 and 1995, and was an SEG Distinguished Lecturer in 1991. He served as Editor, Vice President and President for the Geophysical Society of Tulsa, and was granted an honorary membership in that Society. He has served as Editor, Associate Editor and Assistant Editor for the publication of GEOPHYSICS, and Editor for The Leading Edge, Editor for the CSEG, special Editor for IEEE, and has co-written or co-edited books on geophysical inversion and imaging. He was awarded honorary lifetime membership in CSEG in 1998 and honorary membership in SEG in 2000. Larry is also a member of SEG, EAGE, CSEG, AAPG and APEGGA. Biondo Biondi is Associate Professor (Research) of Geophysics at Stanford University Biondo graduated from Politecnico di Milano in 1984 and received an M.Sc. (1988) and a Ph.D. (1990) in geophysics from Stanford. He is co-director of the Stanford Exploration Project (SEP) and leads its efforts in 3-D seismic imaging. SEP is an academic consortium whose mission is to develop innovative seismic imaging methodologies and to educate the next generation of leaders in exploration seismology. SEP’s activities are supported by about 25 companies involved in Oil & Gas exploration and production. Biondo has made contributions on several aspects of seismic imaging, ranging from velocity estimation to parallel algorithms for seismic migration. Since the early nineties he has been at the forefront of the development of wave-equation 3-D prestack migration methods. In 2004 the Society of Exploration Geophysicists (SEG) has honored Biondo with the Reginald Fessenden Award for his “development of azimuthal moveout (AMO), . AMO has contributed to many other developments in the areas of migration, multiple attenuation and regularization of seismic data” (full citation). Biondo has recently written a book, 3-D Seismic Imaging, that will be the first text book to introduce the theory of seismic imaging from the 3-D perspective. The book will be published by SEG in the Investigations in Geophysics series by the end of 2005. Biondo is in close contact with the practical applications of seismic imaging by his involvement with 3DGeo Development that he founded