Full waveform inversion of seismic data
Data Processing SIG
Sponsored by CGG
Wed 24-May-06 5:30 PM - to - Wed 24-May-06 6:30 PM CDT
Speaker: Bee Bednar
CGG
16430 Park Ten Place
houston/tx 77084
Can We Make Inversion Work?
Full waveform inversion of seismic data has less that a sterling reputation as a practical approach to ascertaining anything close to a true Earth model. To date there has been few examples that corroborate the theoretical promise this approach entails. In earlier work we investigated both conventional (least-squares) and cepstrum (logarithmic) based approaches to full-waveform inversion of seismic data. In the course of these researches we empirically observed the well-known fact that the absence of low frequencies in recorded data is a serious detriment to successful inversion. Fortunately, we also observed that full wavefield inversion can play an important role in the estimation of desired subsurface parameters. Here we examine the relationship of inverse scattering based approaches to wavefield inversion and argue that similar issues may impact it in the same manner.
Speaker Information "Bee Bednar"
After receiving a Ph.D. in Mathematics from the University of Texas at Austin Bee did research in Anti-Submarine Warfare and taught Mathematics at Drexel University and the University of Tulsa. He was Manager of Seismic Research at Cities Service Company and later became Manager and then Director of Geophysical Sciences at Amerada Hess, where he was instrumental in development of distributed seismic processing software and lead Amerada to the forefront of prestack depth imaging and computer assisted interpretation. He has participated in over 100 prestack depth imaging and interpretation projects and has published over 75 papers in Mathematics, Electrical Engineering, Geophysics, and Computer Science. After retiring from Amerada Hess he became Vice President of Research and Development at Advanced Data Solutions where he was instrumental in introducing LINUX based cluster computers to the energy industry. He founded 3dBee Tech in 1997 to perform consulting and geophysical software development. He is currently one of the founders of Panorama Technologies Inc where he is Senior Executive Vice President. He still consults for companies engaged in the exploration for and production of hydrocarbons and manages the development of geophysical software on modern cluster computers.
