Invited Papers & Lectures:
INVITED PAPERS:
Cost effective parallel seismic computing using a PC cluster, November 1998, Phillips Petroleum Company, Bartlesville, OK.
Migration and Inversion of Seismic Data, May 1994, NATO/ARW Advanced Research Workshop on Rifted Ocean - Continent Boundaries, Mallorca, Spain.
Tau-p: An Alternative Domain for Filtering, Velocity Analysis and Imaging, 1989, Recent Advances and the Road Ahead Symposium, Proceedings of the 59th Annual Meeting of the Society of Exploration Geophysicists, Dallas, TX.
Pre-stack Velocity Analysis in the Tau-p Domain, 1987, Research Workshop, 57th Annual Meeting of the Society of Exploration Geophysicists, New Orleans, LA.
Velocity Analysis in the Tau-p Domain, 1987, Proceedings of the 57th Annual Meeting of the Society of Exploration Geophysicists, New Orleans, LA.
INVITED LECTURES:
Inversion for reservoir parameters using both time-lapse seismic and well production data, March 2008, Dallas Geophysical Society, Dallas, TX
Inversion for reservoir parameters using both time-lapse seismic and well production data, August 2007, Universidade Federal da Bahia, Salvador, Brazil.
Resolution of seismic and reservoir models, September 2006, Exploration Geophysics Seminar, The University of Texas at Austin.
An analysis of flow-simulation scales and seismic response, February 2006, MTEM Limited, Edinburgh, Scotland.
Double plane wave Kirchhoff depth migration, February 2006, MTEM Limited, Edinburgh, Scotland.
Transient EM imaging using split step Fourier methods, February 2006, MTEM Limited, Edinburgh, Scotland.
Flow/Petrogeophysics/Geophysics Integration – Instrumented Oilfield, October 2005, Fifteenth Annual Industrial Affiliates Meeting, Center for Subsurface Modeling, The University of Texas at Austin.
Double plane wave Kirchhoff depth migration, September 2005, Universidade Federal da Bahia, Salvador, Brazil.
Research projects at The University of Texas Institute for Geophysics, April 2005, Department of Earth Science Seminar Series, Rice University, Houston, TX
Research projects at The University of Texas Institute for Geophysics, February 2005, Society of Petroleum Engineers, Austin
THRUST S1: Energy testbeds, Janaury 2005, Center for Geosystems Engineering Management (C-GEM) ERC Meeting, The University of Texas at Austin.
Flow/geophyiscs integration, 2004, Fourteenth Annual Industrial Affiliates Meeting, Center for Subsurface Modeling, The University of Texas at Austin.
Status of exploration seismology at other UT research units (UT Institute for Geophysics), EDGER Forum Symposium - Successful Applications of Multicomponent Seismic Data, February 2004, Jackson School of Geosciences, The University of Texas at Austin
Pre stack 3D seismic modeling, 2003, Thirteenth Annual Industrial Affiliates Meeting, Center for Subsurface Modeling, The University of Texas at Austin.
Stoffa, P.L., M. Sen, R. Seifoullaev, R. Pestana, and M. Tanis, 2003, Seismic imaging and velocity analysis: Current status and future directions, SIAM Conference on Mathematical and Computational Issues in the Geosciences, Austin, Texas, 6.
Research projects at The University of Texas Institute for Geophysics, October 2002, Bureau of Economic Geology's Fall 2002 Technical Seminar Series, The University of Texas at Austin.
Research in subsurface modeling and geophysics, September 2002, The Institute for Information Science and Technology (IIST) Review Panel Committee’s presentation to the O’Donnell Foundation’s site visit, The University of Texas at Austin.
Migration velocity analysis: a problem for non linear optimization, August 2002, Universidade Federal da Bahia, Salvador, Brazil.
Geophysical research projects at the University of Texas Institute for Geophysics, August 2002, Petrobras, Rio de Janeiro, Brazil.
Estimating pre-critical seismic data from post-critical seismic data, December 2001, University of Houston.
Earth Science Research at The University of Texas Institute for Geophysics, February 2001, Lakeway Mens Breakfast Club, Lakeway, TX.
Earth Science Research at The University of Texas Institute for Geophysics, Netherlands Research Centre for Integrated Solid Earth Science Annual Assembly, December 2000, Amsterdam, The Netherlands.
Research at The University of Texas Institute for Geophysics, October 2000, Bureau of Economic Geology, UT-Austin.
UTIG: Global-Scale Basic Earth Science Research Using Geophysical Methods, March 1999, Defense Advanced Research Projects Agency, Washington, DC.
Dip Selection 2-D Multiple Attenuation Operators in Plane Wave Domain, June 1998, Delft University of Technology, The Netherlands.
Migration Velocity Analysis, July 1996, Western Atlas, Houston, TX.
Migration Velocity Estimation, May 1996, Rice University, Houston, TX.
Linear Inversion Combined with Nonlinear Optimization to Speed Convergence for Geophysical Inverse Problems, March 1996, Instituto de Geociências, Universidade Federal da Bahia, Salvador, Brazil.
Prestack Migration Velocity Analysis using Nonlinear Optimization, March 1995, German Geophysical Society, Hamburg, Germany.
Pre-stack migration velocity analysis using VFSA: A comparison of migrated misfit and reflection tomography, August 1994, Instituto de Geociências, Universidade Federal da Bahia, Salvador, Brazil.
Nonlinear Optimization Methods in Geophysics, June 1994, GeoForschungs Zentrum Potsdam, University of Potsdam, Germany.
Nonlinear Optimization Methods in Geophysics, June 1994, Norsk Hydro, Statoil and the University of Bergen, Norway.
Nonlinear Optimization Methods in Geophysics, June 1994, University of Trondheim, Norway.
Nonlinear Optimization Methods in Geophysics, May 1994, Delft University of Technology, The Netherlands.
Geophysical applications of Global Optimization Methods, February 1994, Rice University, Houston, TX.
Seismic Waveform Inversion Using Global Optimization Methods: Examples Using Genetic Algorithms, November 1993, Compagnie Générale de Géophysique, Massy, France.
Seismic Waveform Inversion Using Global Optimization Methods: Examples Using Genetic Algorithms, Petroleum Science and Technology Symposium, October 1992, Cray Research, Inc., Houston, TX.
Seismic Waveform Inversion Using Global Optimization Methods, February 1992, University of New Orleans.
Seismic Waveform Inversion Using Global Optimization Methods, August 1991, Phillips Petroleum Company, Bartlesville, OK.
Experience With a Frequency Wavenumber Migration Algorithm on Parallel Computer Architectures, February 1991, MCC Workshop on Parallel Applications in the Oil Industry, Austin, TX.
Experiences with Supercomputers in Reflection Seismology, November 1989, IEEE-ACM Supercomputing Conference '89, Reno, NV.
3-D Laterally variable phase shift migration with examples from offshore Costa Rica, April 1989, Atlantic Richfield Company, Plano, TX.
Recent Seismic Programs at The University of Texas Institute for Geophysics: Costa Rica 3D, Nankai Trough high resolution 2 ship program, Carolina Trough, March 1989, Rice University, Houston, TX.
Seismic Reflection Programs at the University of Texas at Austin and 3D Survey off Costa Rica, March 1988, The University of Houston, Houston, TX.
Velocity Analysis for Dipping Structures, April 1987, Phillips Petroleum Company, Bartlesville, OK.
Acquisition and Analysis of Wide Angle Reflection and Refraction Seismic Data, February 1985, Geophysical Society of Tulsa, Tulsa, OK.
Acquisition and Analysis of Wide Angle Reflection and Refraction Seismic Data, November 1984, Shell Development Company, Houston, TX.
Acquisition and Analysis of Wide Angle Reflection and Refraction Seismic Data, November 1984, University of Houston, Houston, TX.
