Saturday, March 27

MS35
Subsurface Model Determination by Reflection Tomography

9:45 AM-11:45 AM
Room: Executive Salon 1

Correct subsurface imaging from seismic data requires a velocity model that allows one to correctly simulate the propagation of seismic waves in the earth. One method to determine such a velocity model is reflection tomography. Reflection tomography is an inverse problem based on ray tracing as the forward problem. The tomographic inverse problem itself can be formulated in a variety of ways. The parametrization of the subsurface, the forward modeling and the optimization method are some of the further ingredients for which different choices can be made. The speakers will address most of these aspects from a theoretical point of view and they will show applications on synthetic and real data.

Organizers: Andreas Ehinger
Institut Francais du Pétrole, Rueil-Malmaison, France
Jeffrey L. Hensley
University of Tulsa

9:45-10:10 Stereotomography: An Original Tomographic Approach In Seismic Reflection
Frédéric Billette, Pascal Podvin, Gilles Lambaré, and Emanuel Chalard, Ecole des Mines de Paris, Fontainebleau, France
10:15-10:40 Tomographic Inversion of Multi-Valued Traveltimes
Delphine Sinoquet and Bertrand Alazardb, Institut Francais du Petrole, Rueil-Malmaison, France; and Richard A. Clarke, Amoco Exploration and Production Technology Group
10:45-11:10 Optimization Strategy for Large Size Tomographic Inversion
Frédéric Carrere, Institut Francais du Pétrole, Rueil-Malmaison, France
11:15-11:40 3D Reflection Tomography with Converted Waves
Richard A. Clarke, Amoco Exploration and Production Technology Group

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tjf, 10/29/98, MMD, 11/20/98