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   "This year's Annual Meeting will give attendees...a high- quality Technical Program with more posters." -Annual Meeting General Chairman, Ken Helm | | W-15 The Highs and Lows of Broadband Seismic: From Acquisition through Inversion Date: Friday, 23 September
Time: 8:30 a.m.-5 p.m.
Henry B. Gonzalez Convention Center, Room 217 B
Organizers: Adriana C. Ramírez, Jim Gaiser, Tom Dickens, Laurent Sirgue, and Mirko Van der Baan
Through the support of the SEG Research Committee Description: The bandwidth of seismic data continues to improve both at the low and high end of the spectrum. New acquisition technology and survey designs provide measured data with more usable frequency bandwidth. Part of the improved frequency bandwidth is directly related to acquisition (i.e., deeper towed streamers benefit the low end of the measured spectrum), and part is related to the processing of the acquired data. Seismic inversion highly depends on the quality of the input data –in particular, on its frequency content and resolution. The usable measured frequency bandwidth in data acquisition and the preservation and enhancement of that bandwidth through pre-processing workflows play a critical role on the inversion result. Thus, this workshop addresses issues of obtaining and preserving broadband seismic data in seismic exploration, from acquisition to inversion. The objective of this workshop is to motivate a forward-looking exchange of ideas and to assess how our industry is doing with regard to broadband data. Deeper towed streamers, multicomponent receivers, deghosting, wavelet deconvolution, all offer the possibility of an uplift in the usable frequency bandwidth of the data, but how much real uplift is obtained in practice still needs to be thoroughly assessed, in particular when it comes to its benefit to seismic inversion. Some of the questions we would like to answer at the end of this workshop are: - How much frequency improvement is obtained from the modern acquisition techniques?
- How much benefit does pre-processing provide in terms of frequency bandwidth?
- Do we need even higher resolution and more frequency content than we are obtaining today?
- Can the bandwidth of the broadband signal be preserved throughout the seismic processing workflow to ultimately benefit our inversion results?
Schedule: | 8:30 am: | Welcome—Adriana C. Ramírez*, PGS | Acquisition
Session Chairs: Adriana C. Ramírez and Laurent Sirgue | | 8:45 am: | Variable Depth Streamer – The New Broadband Acquisition System—Robert Soubaras and Peter Whiting*, CGGVeritas | | 9:00 am: | Addressing band‐limiting aspects of the very near surface—Mark Egan*, WesternGeco | | 9:15 am: | Ghost free marine seismic acquisition—Eivind Fromyr and Per Eivind Dhelie*, PGS | | 9:30 am: | Broadband land acquisition – survey design issues —Bill Pramik*, Geokinetics Inc | | 9:45 am: | Ultra-high channel single sensor land acquisition to enhance low frequencies for inversion—Peter I. Pecholcs* | | 10:00 am: | Panel Discussion | Processing
Session Chairs: Mirko van der Baan and James Gaiser | | 11:00 am: | Statistical wavelet estimation and bandwidth enhancement—Mirko van der Baan*, U of Alberta | | 11:15 am: | Q compensation and spectral extrapolation: getting high frequencies from low and vice versa— Kris A. Innanen*, U of Calgary, CREWES | | 11:30 am: | Extending the high end of C-wave bandwidth to match P-wavelengths—Jim Gaiser*, Richard Verm, and Alvaro Chaveste, Geokinetics Inc | | 11:45 am: | Lunch break | | 1:00 pm: | Robust source signature deconvolution and the estimation of primaries by sparse inversion—Tim Lin*and Felix J. Herrmann, U of British Columbia | | 1:15 pm: | Variable-depth streamer - optimal broadband imaging—Robert Soubaras*, CGGVeritas | | 1:30 pm: | Preservation and enhancement of low frequencies in preparing marine data for full-waveform inversion—Boris Tsimelzon, Stepan Marinets, Soren Naumann, Torben Hoy and Steve Kelly*, PGS | | 1:45 pm: | Panel Discussion | Inversion
Session Chairs: Laurent Sirgue and Tom A. Dickens | | 2:45 pm: | A land broadband seismic example: the importance of low frequencies for full waveform inversion—Guido Baeten, Jan Willem de Maag, René-Edouard Plessix and Fons ten Kroode*, Shell Global Solutions International | | 3:00 pm: | A multi-scale strategy for handling broadband seismic data—Virieux J.*, A. Asnaashari, R. Brossier, G. Hu, and A. Roques, ISTerre, U Joseph Fourier – CNRS; S. Operto, C. Castellanos, V. Etienne, Y. Gholami, D. Pageot, V. Prieux, and A. Ribodetti, G´eoazur - U Nice Sophia-Antipolis - CNRS | | 3:15 pm: | Variable Depth Streamer – benefits for rock property inversion—Y. Lafet*, CGGVeritas | | 3:30 pm: | Viscoelastic orthorhombic full wavefield inversion: development of multiparameter inversion methods—Gillian T. Royle*, ExxonMobil Upstream Research Company | | 3:45 pm: | Sparse deconvolution via Markov Chain Monte Carlo—James Selvage*, BG Group; Dinh Tuan Pham, Laboratory Jean Kuntzman; Mirko van der Baan, U of Alberta | | 4:00 pm: | Panel Discussion | | 5:00 pm: | Closing remarks |
*Primary author of abstract Back to Technical Programs Workshops menu |
