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GEOPHYSICAL
PRESS SEMINAR APPLIED SEISMIC ANISOTROPY AMSTERDAM, June 5 & 6, 2009 AMSTERDAM MARRIOTT HOTEL Presented by ILYA TSVANKIN Center for Wave Phenomena, Colorado School of Mines, Golden, CO, U.S.A. INTRODUCTION For a long time the seismic exploration method had been based on the simplistic assumption that the earth behaves as a purely isotropic medium. Several breakthroughs in the past decade have led to the development of practical methods for processing of seismic data from anisotropic media. For example, new inversion techniques make it possible to estimate the interval anisotropy parameters, which carry valuable information about lithology and fracture networks. The goal of this seminar is to introduce basic theory of anisotropic wave propagation and discuss processing and inversion of seismic data in the presence of anisotropy. The seminar is mainly focused on two most common anisotropic models - transverse isotropy (TI) with a vertical or tilted symmetry axis and orthorhombic (orthotropic) symmetry. Analysis of concise linearized solutions for TI media provides valuable insight into the influence of anisotropy on a wide range of seismic signatures. P-wave time and depth processing for vertical transverse isotropy (VTI) is discussed in detail using both synthetic examples and case studies. In particular, it is shown how anisotropic migration velocity analysis can be employed to build heterogeneous VTI velocity models for pre-stack depth imaging. Another class of anisotropic parameter-estimation algorithms presented in the seminar operates with multi-component reflection data, such as the combination of P-waves and converted PS-waves. The amplitude-variation-with-offset (AVO) response in anisotropic media is described using simple approximations for plane-wave reflection coefficients and for amplitude distortions (geometrical spreading) in the overburden. Also introduced are fracture-characterization methods based on wide-azimuth, multi-component reflection and VSP (vertical seismic profiling) data. Finally, the seminar explores the opportunities for building azimuthally anisotropic velocity models using wide-azimuth acquisition technology. Geologists and geophysicists involved in seismic exploration and monitoring are encouraged to attend. SEMINAR PROGRAM Friday, June 5, 2009
Saturday, June 6, 2009
Dr. Ilya Tsvankin is a professor of geophysics at the Colorado School of Mines (CSM) and director of the Center for Wave Phenomena, one of the leading academic research projects in applied seismology. Prior to joining CSM in 1992, he had worked at the Amoco Production Research Center in Tulsa, USA, and at the Institute of Physics of the Earth in Moscow, Russia. Dr. Tsvankin's research interests are focused on modeling, inversion and processing of seismic data for anisotropic media, characterization of fractured reservoirs and time-lapse seismology. The Society of Exploration Geophysicists (SEG) recognized Dr. Tsvankin's pioneering work in seismic anisotropy with its highest scientific award - the Virgil Kauffman Gold Medal (1996). His monograph "Seismic signatures and analysis of reflection data in anisotropic media" published in 2001 and reprinted in 2005 is regarded as a major text in the field. Dr. Tsvankin has taught professional courses worldwide and is an active member of SEG and EAGE. He chaired the Organizing Committee of the 13th International Workshop on Seismic Anisotropy, held in August 2008 in Winter Park, Colorado, U.S.A. LOCATION The seminar will be held at the luxurious Amsterdam Marriott Hotel, located in the city centre, across from Leidseplein's fine dining, fashion shopping and entertainment, and a 5-minute walk to many attractions including the casino, the Rijks Museum and the Van Gogh Museum. A special room price has been negociated for the seminar participants. REGISTRATION Registration fee is £1,100.00. This includes the 2-day course, lunches, coffee and tea breaks, instruction material, and a copy of Geophysical Press's 2-volume special issue on Seismic Anisotropy - State of the Art (2008), edited by Enru Liu. Hotel reservations can be made with your registration, by indicating arrival and departure date. The room price per night is £198.00, buffet breakfast and all taxes included. Registration is definite upon receipt of payment, which can be made by bank transfer to: Lloyds Bank Plc, Pall Mall St. James's, 8-10 Waterloo Place, London SW1Y 4BE, U.K., Acc. No. 2547343 in favour of Geophysical Press Ltd. Swift Code: LOYDGB2L, Sort Code: 300008, IBAN: GB23LOYD30000802547343, BIC: LOYDGB21012 Registration is on a first come - first served basis. To register, e-mail to info@geophysical-press.com, giving your name, company and address, plus the number of nights you need the hotel reservation. |
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