Presentations

Professional Society Presentations

Medellin, D., Ravi, V. R., and Torres-Verdín, C., 2016, Memory efficient multidimensional NMR inversion without Kronecker products: 13th International Bologna Conference on Magnetic Resonance in Porous Media (MRPM13), Bologna, Italy, September 4-8.

Medellin, D., Ravi, V. R., and Torres-Verdín, C., 2016, Memory efficient multidimensional NMR inversion: examples and applications: Society of Petrophysicists and Well-Log Analysts (SPWLA) 2016 Spring Topical Conference on NMR, Houston, TX, April 27-29.

Medellin, D., Ravi, V. R., and Torres-Verdín, C., 2016, New mixing laws for the interpretation of NMR signals acquired in heterogeneous formations: Society of Petrophysicists and Well-Log Analysts (SPWLA) 2016 Spring Topical Conference on NMR, Houston, TX, April 27-29.

Kelly, S. A., Torres-Verdín, C., and Balhoff, M., 2014, Quantification of viscosity and capillary pressure anomalies for polar liquids in 2D hydrophilic nano-confinements: American Geophysical Union (AGU) Fall Meeting, Poster H11H-1006, Session MR11A (Shale Science: Coupled Processes in Hydraulic Fracturing and CO2 Sequestration I, Posters), San Francisco, CA, December 15-19.

Yang, K., Torres-Verdín, C., and Yilmaz, A., 2014, On the detectability and appraisal of hydraulic fractures in layered media using borehole resistivity measurements: 2014 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Memphis, TN, July 6-11.

Kelly, S., Torres-Verdín, C., and Balhoff, M., 2014, Experimental verification of conventional fluid flow equations in nano-scale confinements: 6th International InterPore Conference, Milwaukee, Wisconsin, May 27-30.

Woodruff, W. F., Revil, A., and Torres-Verdín, C., 2013, Conductivity of organic-rich shales: American Geophysical Union (AGU) Fall Meeting, Poster MR11A-2214, Session MR11A (Subsurface Science and Engineering of Shale I, Posters), San Francisco, CA, December 8-13.

Matuszyk, P. J. and Torres-Verdín, C., 2013, Current numerical modeling challenges in the interpretation of sonic logs, invited presentation: Society of Petrophysicists and Well Log Analysts (SPWLA) Fall Topical Conference on Seismic Petrophysics, Taos, NM, October 28-30.

Sayar, P. and Torres-Verdín, C., 2013, Quantification and interpretation of elastic anisotropy in hydrocarbon-bearing shale, invited presentation: Society of Petrophysicists and Well Log Analysts (SPWLA) Fall Topical Conference on Seismic Petrophysics, Taos, NM, October 28-30.

Shabro, V. and Torres-Verdín, C., 2013, Formation evaluation in source rocks, invited presentation: Congreso Mexicano del Petróleo, Riviera Maya, Quintana Roo, Mexico, June 6-9.

Torres-Verdín, C., 2013, Building technical capacity in formation evaluation, petrophysics, borehole geophysics, and reservoir geophysics, challenges and the road ahead: invited presentation: American Geophysical Union Meeting of the Americas, Cancún, Quintana Roo, México, May 14-17.

Torres-Verdín, C., 2013, The role of modeling and inversion in the placement and petrophysical evaluation and high-angle and horizontal wells: Society of Petrophysicists and Well-Log Analysts (SPWLA) 2013 Spring Topical Conference on High-Angle Well Placement and Evaluation, Santa Rosa, California, April 29 – May 1st.

Ijasan, O., Torres-Verdín, C., and Preeg, W. E., 2013, Inversion-based petrophysical interpretation of LWD nuclear and resistivity measurements in HA/HZ wells: Society of Petrophysicists and Well-Log Analysts (SPWLA) 2013 Spring Topical Conference on High-Angle Well Placement and Evaluation, Santa Rosa, California, April 29 – May 1st.

Ijasan, O., Torres-Verdín, C., and Preeg, W. E., 2013, Quantitative characterization of depth discrepancies and varying depths of investigation of nuclear measurements: Society of Petrophysicists and Well-Log Analysts (SPWLA) 2013 Spring Topical Conference on High-Angle Well Placement and Evaluation, Santa Rosa, California, April 29 – May 1st.

Ortega, E., Torres-Verdín, C., and Preeg, W. E., 2013, Fast forward and inverse modeling of multidetector LWD Sigma measurements: Society of Petrophysicists and Well-Log Analysts (SPWLA) 2013 Spring Topical Conference on High-Angle Well Placement and Evaluation, Santa Rosa, California, April 29 – May 1st.

M., Chen, D., Eyuboglu, S., Torres-Verdín, C., and Pour, R., 2012, Newly adaptive pulse testing technique for unconventional shale reservoirs: Society of Petrophysicists and Well Logs Analysts (SPWLA) Fall Topical Conference on Reservoir Evaluation by Downhole Fluid Analysis and Formation Testing, Savannah, GA, October 29-31.

Hadibeik, H., Torres-Verdín, C., and Sepehrnoori, K., 2012, Estimation of permeability from formation-tester measurements using streamlines: Society of Petrophysicists and Well Logs Analysts (SPWLA) Fall Topical Conference on Reservoir Evaluation by Downhole Fluid Analysis and Formation Testing, Savannah, GA, October 29-31.

Pour, R., Torres-Verdín, C., and Sepehrnoori, K., 2012, Effects of bed laminations and wellbore deviation on formation-tester measurements: Society of Petrophysicists and Well Logs Analysts (SPWLA) Fall Topical Conference on Reservoir Evaluation by Downhole Fluid Analysis and Formation Testing, Savannah, GA, October 29-31.

Diniz-Ferreira, E. L. and Torres-Verdín, C., 2012, Improved estimation of pore connectivity and permeability in deepwater carbonates with construction of multi-layer static and dynamic petrophysical models (INVITED): Congreso Mexicano del Petróleo, Mexico City, Mexico, September 12.

Hadibeik, H., Torres-Verdín, C., and Sepehrnoori, K., 2012, Some important effects of OBM-filtrate invasion in gas reservoirs and their consequences on fluid sampling: SPE Workshop Drilling Meets Formation Evaluation, Montgomery, Texas, June 12–14.

Xu, C., Torres-Verdín, C., and Steel. R.J., 2012, Facies Interpretation based on quantitative analysis of grain size and bed thickness from well logs in deepwater turbidite reservoirs, AAPG 2012 Annual Convention and Exhibition, Long Beach, California, USA, April 22-25.

Heidari, Z., Torres-Verdín, C., Adiguna, H., and Preeg, W. E., 2011, New deterministic strategies for petrophysical and compositional evaluation of invaded multi-layer formations with thin beds and complex lithology: Society of Petrophysicists and Well Logs Analysts (SPWLA) Fall Topical Conference on Computational Petrophysics, Asheville, NC, October 9-12.

Shabro, V., Torres-Verdín, C., Javadpour, F., and Sepehrnoori, K., 2011, Pore-scale analysis of petrophysical properties of hydrocarbon-bearing shale as controlled by kerogen maturation effects:Society of Petrophysicists and Well Logs Analysts (SPWLA) Fall Topical Conference on Computational Petrophysics, Asheville, NC, October 9-12.

Xu, C., Yang, Q., and Torres-Verdín, C., 2011, Well-log based Bayesian rock typing and uncertainty quantification in a common stratigraphic framework: Society of Petrophysicists and Well Logs Analysts (SPWLA) Fall Topical Conference on Computational Petrophysics, Asheville, NC, October 9-12.

Matuszyk, P. J., Demkowicz, L. F., and Torres-Verdín, C., 2011, Frequency domain automatic hp-adaptive fem for simulation of coupled acoustic/elastic/poroelastic wave propagation in boreholes: : 11th U.S. National Congress on Computational Mechanics,Minneapolis, MN, July 25-29.

Sanchez-Ramirez, J., Torres-Verdín, C., C., Wang, G. L., Mendoza, A., Wolf, D. Liu, Z., and Schell, G., 2010, Field cases of the combined deterministic petrophysical inversion of gamma-ray, density, and resistivity logs acquired in thinly bedded clastic rock formations: AAPG (American Association of Petroleum Geologists) Annual Convention and Exhibition, New Orleans, Louisiana, April 11-14.

Matuszyk, P. J., Demkowicz, L. F., and Torres-Verdín, C., 2010, 2D hp finite element simulation of sonic measurements in the borehole: Spring 2010 Finite Element Rodeo,Dallas, Texas, March 5-6.

Javadpour, F., Shabro, V., Jeje, A., and Torres-Verdín, C., 2009, Modeling of coupled surface and drag forces for the transport and capture:Multiphysics 2009, Lille, France, December 9-11.

Nam, M. J., Hwang, S., Pardo, D., and Torres-Verdín, C., 2009, An analysis of induction measurements using goal-oriented, self-adaptive, hp finite-element method simulation: Fall Symposium of the Korean Society of Geosystems Engineering (KSGE), Seoul, Korea, September 23.

Pardo, D., Matuszyk, P., Nam, M. J., and Torres-Verdín, C., 2009, A hp-finite element method applied to the simulation of electromagnetic and acoustic/elastic borehole logging measurements: Partial Differential Equations, Optimal Design, and Numerics,Benasque, Spain, September 1.

Pardo, D., Nam , M. J., Torres-Verdín, C., and Calo, V. M., 2009, A Fourier-finite-element method in a non-orthogonal system of coordinates for the simulation of 3D resistivity logging measurements acquired in deviated wells 10 th U.S. National Congress on Computational Mechanics, Columbus , OH , July 16-19.

Paszynski, M., Pardo, D., and Torres-Verdín C., 2009, Performance of a multi-frontal parallel Direct solver for hp finite element method , International Conference on Advances in Computer Science and Engineering, Phuket, Thailand, March 16-18.

Pardo, D., Torres-Verdín, C., Paszynski, M., and Nam, M.J., 2008, Design of frequency-domain EM finite elements for geophysical applications, Progress in Electromagnetic Research Symposium (PIERS) 2008, Boston, Massachusetts, July 3-7.

Pardo, D., Nam, M.J., Torres-Verdín, C. , and Paszynski, M., 2008, A Fourier-finite element formulation and an iterative solver for the simulation of 3D induction measurements acquired in deviated wells, Progress in Electromagnetic Research Symposium (PIERS) 2008, Boston, Massachusetts, July 3-7.

Angeles, R., Torres-Verdín, C. , and Malik, M. 2008, Formation testing in high-angle wells 2008 Spring Topical Conference of the Society of Petrophysicists and Well Log Analysts (SPWLA), Taos, NM, March 30 – April 2.

Torres-Verdín, C. , 2008, Resistivity modeling in high-angle wells 2008 Spring Topical Conference of the Society of Petrophysicists and Well Log Analysts (SPWLA), Taos, NM, March 30 – April 2.

Uzoh, E., Mendoza, A., Torres-Verdín, C. , and Preeg, B., 2008, Quantitative studies of relative-dip-angle and bed-thickness effects on LWD density images acquired in high-angle and horizontal wells 2008 Spring Topical Conference of the Society of Petrophysicists and Well Log Analysts (SPWLA), Taos, NM, March 30 – April 2.

Michler, C., Demkowicz, L., Torres-Verdín, C., and Pardo, D., 2007, Simulation of borehole acoustic measurements with adaptive finite elements for the accurate and reliable assessment of rock formation properties9th US National Congress on Computational Mechanics, San Francisco, July 23-26.

Pardo, D., Paszynski, M., and, Torres-Verdín, C., 2007, Numerical simulation of 3D borehole resistivity measurements using an hp-adaptive goal-oriented FEM9th US National Congress on Computational Mechanics, San Francisco, July 23-26.

Paszynski, M., Pardo, D., and, Torres-Verdín, C., 2007, A nested dissection parallel direct solver for simulations of 3D DC/AC resistivity measurements9th US National Congress on Computational Mechanics, San Francisco, July 23-26.

Wang, G. L., Torres-Verdín, C., and Gianzero, S., 2007, Simulation of electromagnetic waves in cylindrical layered media with the axial hybrid method9th US National Congress on Computational Mechanics, San Francisco, July 23-26.

Contreras, A., Torres-Verdín, C., Fisher, W., and Galloway, W., 2007Geomorphologic delineation of deepwater hydrocarbon reservoirs with pre-stack seismic inversion:2007 AAPG (American Association of Petroleum Geologists) Annual Convention and Exhibition, Long Beach, California, April 1-4.

Michler, C., Demkowicz, L., Torres-Verdín, C., Pardo, D., and, Kurtz, J., 2007, Efficient simulation of borehole acoustic measurements using adaptive finite elementsFinite Element Rodeo, University of Houston, March 2-3.

Pardo, D., Demkowicz, L., Torres-Verdín, C., Paszynski, M., 2007, A three-dimensional self-adaptive, goal-oriented hp-finite element method with a multigrid solver, Applications to electromagneticsSIAM Conference on Computational Science and Engineering, Costa Mesa, California, February 19-23.

Pardo, D., Demkowicz, L., and Torres-Verdín, C., 2006, A two-grid goal-oriented iterative solver for hp-finite element discretizations with possibly elongated elements of elliptic problemsEight IMACS International Symposium on Iterative Methods in Scientific Computation, College Station, Texas, USA, November 14-17.

Ramirez, T. R., Torres-Verdín, C., Lee, H-J, and Wang, G. L., 2006, Interactive assessment of the sensitivity of well logs to static and dynamic petrophysical properties of rock formationsAAPG (American Association of Petroleum Geologists) International Conference and Exhibition, Perth, Australia, November 5-8.

Contreras, A., Torres-Verdín, C., Chesters, W., Kvien, K., and Fasnacht, T., 2006, High-resolution reservoir characterization through AVA joint inversion of partially-stacked seismic amplitude data and well logs: application to deepwater hydrocarbon reservoirs in the central Gulf of Mexico: (Expanded Abstract) SPG/SEG Kunming-2006 International Geophysical Conference, Kunming China, October 27-29.

Michler, C., Demkowicz L., and Torres-Verdín, C., 2006, Efficient computation of acoustic sensing with hp-adaptive finite element methodsEuropean Conference on Computational Fluid Dynamics (ECCOMAS CFD 2006), Egmond aan Zee, The Netherlands, September 5-8.

Michler, C., Demkowicz L., and Torres-Verdín, C., 2006, Efficient computation of acoustic sensing with hp-adaptive finite element methods7th World Congress on Computational Mechanics, Los Angeles, CA, July 16-22.

Pardo, D., Torres-Verdín, C., and Demkowicz L., 2006, A 2D and 3D hp-finite element method for simulation of through casing resistivity logging instruments2006 IEEE AP-S Internat. Symp. URSI Radio Science Meeting, Albuquerque, NM, July 9-15.

Pardo, D., Paszynski, M., Torres-Verdín, C., and Demkowicz, L., 2006, High-accuracy simulations of 2D and 3D resistivity logging instruments using a self-adaptive goal-oriented hp finite-element methodMAFELAP 2006: The Mathematics of Finite Elements and Applications 2006, Brunel University, Uxbridge, England, June 13-16.

Contreras, A., Torres-Verdín, C., Chesters, W., Kvien, K., and Fasnacht, T., 2006, High-resolution reservoir characterization through AVA joint inversion of partially-stacked seismic amplitude data and well logs: application to deepwater hydrocarbon reservoirs in the central Gulf of Mexico: (Expanded Abstract) Biennial Geophysical Seminar: Closing the Gap in Reserves Replacement, special conference organized by The Norwegian Petroleum Society, Kristiansand, Norway, March 20-22.

Gambús-Ordaz, M. and Torres-Verdín, C., 2006, Assessing the value of 3D post-stack seismic amplitude data in forecasting fluid production from a reservoirSPE Applied Technology Workshop on Key Technologies to Create More Value for Mature Fields, Margarita Island, Venezuela, February 21-24.

Contreras, A., Torres-Verdín, C., Masdag, P., Chesters, W., and Fasnacht, T., 2005, AVA Stochastic inversion of pre-stack seismic data and well logs for 3D reservoir modelling:(INVITED) Bright or Dim? Detection and quantification of fluids and reservoir properties from exploration through to exploitation; an integrated geoscience view, special conference organized by The Geological Society of London, Petroleum Group, London, England, September 14-16.

Contreras, A., Torres-Verdín, C., and Galloway, W., 2005, AVA simultaneous inversion of 3D partially stacked seismic data for reservoir delineation and lithology/fluid characterization in a deepwater Gulf-of-Mexico hydrocarbon reservoirAAPG (American Association of Petroleum Geologists) International Conference and Exhibition, Paris, France, September 14-16.

Torres-Verdín, C., Alpak, F. O., George, B., Sorenson, R., and Robertson, G., 2005,Assessment of in-situ gas saturation and permeability from logs in the Hugoton field based on the physics of mud-filtrate InvasionAAPG (American Association of Petroleum Geologists) Mid-Continent Section Meeting, Oklahoma City, OK, September 10-13.

Pardo, D., Demkowicz, L., and Torres-Verdín, C., 2005, High-accuracy simulations of resistivity logging instruments using a self-adaptive goal-oriented HP finite-element methodUS Association for Computational Mechanics (USNCC) 8th US National Congress on Computational Mechanics, Austin, Texas, July 25-27.

Torres-Verdín, C., Alpak, F. O., and Hou, J., 2005, Three-dimensional, data-adaptive inversion of multi-component borehole array induction measurements on a cluster of PCs : (INVITED) SIAM (Society of Industrial and Applied Mathematics) Conference on Mathematical and Computational Issues in the Geosciences, Avignon, France, June 7-10.

Torres-Verdín, C., and Gambus, M., 2004, A field study to assess the value of 3D seismic data in reducing uncertainty in the forecast of hydrocarbon productionAAPG (American Association of Petroleum Geologists) Annual Meeting, Dallas, Texas, April 18-21.

Boll-Argüello, L.P., Moreno-Vidal, M., and Torres-Verdín, C. 2003, Geometrical and petrophysical factors that condition hydrocarbon-producing reservoirs in the Santa Ana OBC seismic cube: a study based on post-stack and pre-stack seismic inversion, First International Congress on Geosciences in Petroleum Industry, Cancún, Q.R., México, November 9-12.

De la Huerta-Cobos, L., Contreras-Tébar, D.F., and Torres-Verdín, C. 2003, Spatial, geological, and geophysical characterization of reservoirs via seismic inversion: Encrucijada ProjectFirst International Congress on Geosciences in Petroleum Industry, Cancún, Q.R., México, November 9-12.

Pereznegrón-Zarco, I. and Torres-Verdín, C. 2003, Petrophysical evaluation and delineation of gas-producing reservoirs in the Lankahuasa field via post-stack and pre-stack seismic inversionFirst International Congress on Geosciences in Petroleum Industry, Cancún, Q.R., México, November 9-12.

Hou, J., and Torres-Verdín, C. 2003, Finite-difference modeling of 3-D EM fields in anisotropic media using vector-scalar potential formulations: a comparison with direct EM field formulations (INVITED, special session on 3D subsurface electromagnetic imaging and inversion organized by Dr. Michael Zhdanov)Progress in Electromagnetic Research Symposium 2003, Hawaii, October 13-16.

Torres-Verdín, C., Sen, M. K., Varela, O. J., Wu, Z., Roy, I. G., and Gambús-Ordaz, 2003, Quantitative Integration of 3D Seismic Data, Geological Information, Production Data, and Well Logs into Hydrocarbon Reservoir Models Amenable to Dynamic Prediction of Fluid Production, AAPG (American Association of Petroleum Geologists) Annual Meeting, Salt Lake City, UT, May 11-14.

Sen, M. K., Stoffa, P., Seifoullaev, R., Torres-Verdín, C., and Peszynska, M., 2003,Time-Lapse Seismic Simulations for Reservoir Studies (INVITED), Seventh SIAM (Society of Industrial and Applied Mathematics) Conference on Mathematical and Computational Issues in the Geosciences, Austin, TX, March 17-20.

Torres-Verdín, C., Wu, Z., Sen, M. K., Varela, O. J., and Roy, I. G., 2003, Quantitative Reservoir Modeling with Pre-stack Seismic Waveform Inversion and History Matching: A Subspace Approach (INVITED), Seventh SIAM (Society of Industrial and Applied Mathematics) Conference on Mathematical and Computational Issues in the Geosciences, Austin, TX, March 17-20.

Alpak, O.F., Habashy, T.M., Dussan, E., Torres-Verdín, C., and Sepehrnoori, K., 2003,Joint inversion of multiphase fluid flow and electromagnetic measurements acquired in a single borehole environment, Seventh SIAM (Society of Industrial and Applied Mathematics) Conference on Mathematical and Computational Issues in the Geosciences, Austin, TX, March 17-20.

Barrios-Rivera, J., Torres-Verdín, C., Salazar-Soto, V., Herrera-Mercado, M., and Méndez-Pineda, J., 2002, Lamé parameters, acoustic, and shear impedance volumes from simultaneous inversion of pre-stack 3D seismic dataAsociación Mexicana de Geofísicos de Exploración (AMGE) Ann. Mtg., Veracruz, México, September 4-6.

Torres-Verdín, C., Alpak. O.F., Sepehrnoori, K., Habashy, T.M., and Dussan, E., 2002,In-situ, real-time inversion of near-borehole petrophysical properties from pressure and DC resistivity measurements acquired with permanent sensors (INVITED)Society of Industrial and Applied Mathematics (SIAM) 2002 Annual Meeting, Philadelphia, PA, July 8-12.

Torres-Verdín, C., Gao, G., Habashy, T.M., and Fang, S., 2002, Approximations to electromagnetic scattering based on natural preconditioners of the method-of-moments' stiffness matrix: applications to the probing of subsurface rock formations(INVITED)2002 IEEE AP-S Internat. Symp. URSI Radio Science Meeting, San Antonio, TX, June 16-21.

Torres-Verdín, C., Gao, G., and Habashy, T.M., 2002, A new inversion algorithm based on fast and accurate approximations of electromagnetic scattering (INVITED)Progress in Electromagnetic Research Symposium 2002, Massachusetts Institute of Technology, Cambridge, Massachusetts, July 1-5.

Varela, O. J., Torres-Verdín, C., Sen, M. K., and Roy, I. G., 2001, Numerical studies for the efficient quantitative integration of time-lapse reservoir production data, geological information, well logs, and pre- and post-stack 3D seismic data: SEG Development and Production Forum, Taos, New Mexico, June 24-29.

Alpak, F. O., Torres-Verdín, and C., Sepehrnoori, K., 2001, A Gauss-Newton nonlinear inversion technique with applications to the interpretation of time-lapse pressure data acquired with permanent sensorsInverse Problems in Engineering Symposium(sponsored by the Department of Chemical Engineering and the Engineering Imaging Laboratory at Texas A&M University), College Station, Texas, June 14-16.

Torres-Verdín, C. and van der Made, Pieter, 1999, Geostatistical inversion (INVITED):SEG Summer Research Forum, Taos, New Mexico, August 1-6.

Torres-Verdín, C., Merletti, G., Victoria, M, Pendrel, J., and van Riel, Paul, 1999,Geostatistical inversion and lithology discrimination: honoring seismic and borehole data to delineate sands below tuning resolution: SEG Summer Research Forum, Taos, New Mexico, August 1-6.

Habashy, T. M., and Torres-Verdín, C., 1997, Electromagnetic cross-well tomography for subsurface imaging: 26 th General Assembly of the URSI Radio Science Meeting, Toronto, Canada, August 13– 21.

Torres-Verdín, C., Victoria, M., Merletti, G., and Pendrel, J., 1998, Trace-based and geostatistical inversion of 3-D seismic data for thin-sand delineation, an application to San Jorge BasinSEG/SPE Development and Production Forum, Big Sky, Montana, July 19-24.

Malinverno, A., and Torres-Verdín, C., 1997, An efficient Bayesian approach for the estimation and update of hydrocarbon reservoir properties: Fourth SIAM Conference on Mathematical and Computational Issues in the Geosciences, Albuquerque, New Mexico, June 16-19.

Torres-Verdín, C., Druskin, V., Fang, S., and Knizhnerman, L., 1997, A dual-grid nonlinear inversion technique with applications to the interpretation of DC resistivity data: Fourth SIAM Conference on Mathematical and Computational Issues in the Geosciences, Albuquerque, New Mexico, June 16-19.

Habashy, T. M., and Torres-Verdín, C., 1996, Inversion of low frequency electromagnetic data employing a fast and accurate three-dimensional multiple scattering approach: 25 th General Assembly of the URSI Radio Science Meeting, Lille, France, August 28–September 5.

Druskin, V., Torres-Verdín, C., and Schedrina, S., 1995, 2-D inverse cross- and single-well DC tomography problems: feasible formulations and efficient algorithmsSIAM Symposium on Inverse Problems, Geophysical Applications, Marriot Tenaya Lodge at Yosemite, Fish Camp, CA, December 16-19.

Slob, E.C., Habashy, T.M., and Torres-Verdín, C., 1995, Profiles of electromagnetic transients and performance tests of the extended Born approximation: Progress in Electromagnetic Research Symposium 1995, University of Washington, Seattle, Washington, July 24-28.

Torres-Verdín, C., and Habashy, T.M., 1995, An overview of the extended Born approximation as a nonlinear scattering approach, and its applications to cross-well resistivity imaging, Progress in Electromagnetic Research Symposium 1995, University of Washington, Seattle, Washington, July 24-28.

Slob, E.C., Habashy, T.M., and Torres-Verdín, C., 1995, Radar-type transient EM signals scattered by spherical anomalies in dispersive media and performance tests for the extended Born approximation: 1995 IEEE AP-S Internat. Symp. URSI Radio Science Meeting, Newport Beach, CA, June 18-23.

Torres-Verdín, C., and Habashy, T.M., 1995, An improved Kirchhoff approximation for the simulation of electromagnetic scattering from rough surfaces1995 IEEE AP-S Internat. Symp. URSI Radio Science Meeting, Newport Beach, CA, June 18-23.

Habashy, T. M., and Torres-Verdín, C., 1995, A fast and accurate three-dimensional multiple scattering approach involving large conductivity contrasts1995 IEEE AP-S Internat. Symp. URSI Radio Science Meeting, Newport Beach, CA, June 18-23.

Wilt, M., Torres-Verdín, C., Tseng, H., Schenkel, C., and Lee, K.H., 1994, Crosswell Electromagnetics for Reservoir Characterization: Field ExamplesSEG Development and Production Forum, Big Sky, Montana, July 17-22.

Habashy, T. M., and Torres-Verdín, C., 1994, A Multiple Scattering Approach for Forward and Inverse Problems Involving Large Conductivity ContrastsJoint IEEE-APS International Symposium/URSI Radio Science Meeting, University of Washington, Seattle, June 19-24.

Habashy, T. M., and Torres-Verdín, C., 1994, A Multiple Scattering Approach for Forward and Inverse Problems Involving Large Conductivity ContrastsJoint IEEE-APS International Symposium/URSI Radio Science Meeting, University of Washington, Seattle, June 19-24.

Kostek, S., Habashy, T.M., and Torres-Verdín, C., 1994, A new Nonlinear Approximation for Elastic Wave ScatteringAcoustical Society of America 127th Meeting, Cambridge, Massachusetts, June 6-10.

Habashy, T. M., Oristaglio, M. L., and Torres-Verdín, C., 1993, Inversion of Low Frequency Electromagnetic Data : invited for presentation in the special session onInverse Problems organized by W. Ross Stone and Dominique Lesselier at the 24th URSI General Assembly, Kyoto, Japan, August 25-September 2.

Torres-Verdín, C., and Habashy, T. M., 1993, Multi-Dimensional Inversion of EM Geophysical Data Via a New Nonlinear Scattering Approximation: presented in the special session on EM Inverse Scattering Methods for Geophysical Applications:Progress in Electromagnetic Research Symposium (PIERS), Jet Propulsion Laboratory, California Institute of Technology, July 12-16.

Habashy, T. M., Torres-Verdín, C., and Groom R. W., 1993, Modeling Three-Dimensional Scattering Using a New Nonlinear ApproximationJoint IEEE-APS International Symposium/URSI Radio Science Meeting, University of Michigan, Ann Arbor, Michigan, June 28-July 2.

Fernández, R., and Torres-Verdín, C., 1992, Continuous magnetotelluric profiling in two areas of hydrocarbon potential in Southern ChileIAGA 11th Internat. Workshop on EM Induction in the Earth, Victoria University of Wellington, Wellington, New Zealand.

Torres-Verdín, C., and Habashy, T. M., 1992, Rapid 2.5-D forward modeling and inversion of cross-well electromagnetic dataIAGA 11th Internat. Workshop on EM Induction in the Earth, Victoria University of Wellington, Wellington, New Zealand.

Torres-Verdín, C., Habashy, T. M., and Groom R. W., 1992, Inversion of three-dimensional conductivity variations via a nonlinear approximation to the scattered fieldsJoint IEEE-APS International Symposium/ URSI Radio Science Meeting, Chicago, IL.

Torres-Verdín, C., Morrison, H. F., and Bostick, F. X., Jr., 1990, Born inversion of magnetotelluric dataIAGA 10th Internat. Workshop on EM Induction in the Earth and Moon, Ensenada, México.

Torres-Verdín, C., and Bostick, F. X., Jr., 1988, Principles of spatial surface electric field filtering in magnetotellurics: Electromagnetic Array Profiling (EMAP)IAGA 9th Internat. Workshop on EM Induction in the Earth and Moon, Sochi, USSR.

Invited Lectures

Torres-Verdín, C., 2008, The Formation Evaluation Research Consortium at UT Austin(INVITED PRESENTATION), BHP Billiton, Houston, Texas, February 4.

Torres-Verdín, C., 2007, The Formation Evaluation Research Consortium at UT Austin(INVITED PRESENTATION), Marathon Oil Corporation, Houston, Texas, December 11.

Uzoh, E., Mendoza, A., Torres-Verdín, C., Preeg, W. E., and Stockhausen, E., 2007,Quantitative studies of relative dip angle and bed-thickness effects on LWD density images acquired in high-angle and horizontal wellsSchlumberger Internal Technical Meeting on High-Angle/Horizontal Wells, Sugar Land, Texas, September 19.

Pardo, D., Nam, M. J., Torres-Verdín, C., Paszynski, M., and Calo, V. M., 2007,Numerical Simulations of 3D DC and AC Resistivity Logging Measurements in Deviated Wells Using a Fourier Series Expansion in a Non-Orthogonal System of Coordinates:Schlumberger Internal Technical Meeting on High-Angle/Horizontal Wells, Sugar Land, Texas, September 19.

Michler, C., Demkowicz, L., and Torres-Verdín, C., 2007, Efficient numerical methods for fluid-structure interaction and coupled acoustic-elastic wave propagation: (INVITED SEMINAR) Chair for Computational Civil and Environmental Engineering, Technical University of Munich, Munich, Germany, June 19.

Torres-Verdín, C., 2007, The Formation Evaluation Research Consortium at UT Austin (INVITED PRESENTATION), Session on Advanced Concepts in Petrophysics): OXY Technology Conference, Houston, Texas, May 7-10.

Salazar, J. M., Torres-Verdín, C. , Alpak, F. O., Habashy, T. M., and Klein, J. D., 2007,Estimation of permeability from borehole array induction measurements: application to the petrophysical appraisal of tight-gas sands (INVITED LECTURE): Westside Houston Lunch Seminar, Society of Petrophysicists and Well Log Analysts (SPWLA) Houston, TX, March 14.

Jin, G., Torres-Verdín, C. , Devarayan, S., Toumelin, E., and Thomas, E. C., 2007, Pore-scale analysis of the Waxman-Smits shaly-sand conductivity model (INVITED LECTURE):Dallas Lunch Seminar, Society of Petrophysicists and Well Log Analysts (SPWLA) Dallas, TX, March 8.

Mallan, R., and Torres-Verdín, C. , 2007, Estimation of permeability from borehole array induction measurements: application to the petrophysical appraisal of tight-gas sands (INVITED LECTURE): Oklahoma City Lunch Seminar, Society of Petrophysicists and Well Log Analysts (SPWLA) Oklahoma City, OK, February 13.

Michler, C., Demkowicz, L., Torres-Verdín, C., Pardo, D., and, Kurtz, J., 2007, Efficient computation of acoustic sensing by means of adaptive finite elements: (INVITED SEMINAR) at McGill University, Applied Mathematics Seminar, Montreal, Canada, January 22.

Torres-Verdín, C. , 2007, The Formation Evaluation Research Consortium at UT Austin(INVITED SEMINAR): Schlumberger Sugar Land Technology Center , Sugar Land, Texas, February 2.

Michler, C., Demkowicz, L., Torres-Verdín, C., Pardo, D., and, Kurtz, J., 2006, Efficient computation of acoustic sensing with hp-adaptive finite elements: (INVITED SEMINAR) at Texas A&M University, Mathematics Department, College Station, TX, November 22.

Torres-Verdín, C. , 2006, The Formation Evaluation Consortium at UT Austin and its application to the characterization of complex reservoirs (INVITED SEMINAR): Petrobras, Rio de Janeiro, Brazil, August 7.

Torres-Verdín, C. , 2006, Formation evaluation is not a linear monochromatic field!(INVITED SEMINAR): Department of Geophysics, Colorado School of Mines , Golden, CO, May 5. Torres-Verdín, C. , 2006, 2D and 3D high-accuracy simulation of resistivity logging measurements using a self-adaptive goal-oriented hp finite-element method(INVITED SEMINAR): Department of Geophysics, Colorado School of Mines , Golden, CO, May 5.

Torres-Verdín, C. , 2006, Multi-physics integrated approach to formation evaluation using borehole geophysical measurements (INVITED SEMINAR): Institute for Computational Engineering and Sciences (ICES), The University of Texas at Austin , Austin, TX, April 28.

Lee, H. J., Torres-Verdín, C. , and Sepehrnoori, K., 2006, Near wellbore pressure transient simulation with geomechanical deformation for formation evaluation in unconsolidated reservoirs (INVITED LECTURE): Greenspoint Houston Lunch Seminar, Society of Petrophysicists and Well Log Analysts (SPWLA) Houston, TX, April 19.

Torres-Verdín, C. , 2006, Joint stochastic inversion of 3D pre-stack seismic data and well logs for high-resolution reservoir characterization and petrophysical modelling: application to deepwater hydrocarbon reservoirs in the Gulf of Mexico : (INVITED LECTURE) Distinguished lecture series organized by the University of Trinidad and Tobago and Society of Petroleum Engineers (SPE), Trinidad Section, Port of Spain, Trinidad and Tobago, February 9.

Torres-Verdín, C., 2005, The Formation Evaluation program at The University of Texas at Austin: (INVITED LECTURE): Greenspoint Houston Lunch Seminar, Society of Petrophysicists and Well Log Analysts (SPWLA) Houston, TX, September 21.

Torres-Verdín, C., 2005, Field studies for the automatic estimation of permeability from array induction logs based on the physics of mud-filtrate invasion: (INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, Mexico, August 26.

Torres-Verdín, C., 2005, Extrapolation of petrophysical properties away from wells using 3D pre-stack seismic amplitude data: (INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, Mexico, August 26.

Torres-Verdín, C., 2005, Methodologies for the static and dynamic characterization of hydrocarbon reservoirs: Society of Petroleum Engineers (SPE)Argentine Section, Buenos Aires, Argentina, August 3.

Torres-Verdín, C. , and Alpak, F. O., 2004, Multi-physics petrophysical inversion of well logs, proof-of-concept and field examples of application (INVITED SEMINAR): Shell E&P Weekly Petrophysics Seminar, Bellaire, Houston , TX , June 24.

Torres-Verdín, C., 2004, Formation evaluation at UT Austin (INVITED LECTURE): Norsk-Hydro, Sandvika, Norway, June 10.

Torres-Verdín, C., 2004, Formation evaluation at UT Austin (INVITED LECTURE): Statoil, Trondheim, Norway, June 11.

Torres-Verdín, C., 2004, Formation evaluation at UT Austin (INVITED LECTURE): TOTAL, Pau, France, June 14.

Torres-Verdín, C., 2004, Formation evaluation at UT Austin (INVITED LECTURE): ENI-Agip, Milan, Italy, June 16.

Gao, G. and Torres-Verdín, C. , 2004, Modeling borehole induction measurements with a high-order generalized extended Born approximation (Ho-GEBA) (INVITED LECTURE): Special Interest Group in Resistivity/MWD, Logging Characterization Consortium (LCC), Society of Petrophysicists and Well Log Analysts (SPWLA), Houston , Texas , April 28.

Torres-Verdín, C. , and Alpak, F. O., 2004, A multi-physics, integrated approach for the estimation of petrophysical properties of rock formations from well logs and 3D seismic data (INVITED PRESENTATION): Northside Houston Lunch Seminar, Society of Petrophysicists and Well Log Analysts (SPWLA) Houston , TX , April 21.

Torres-Verdín, C. , and Alpak, F. O., 2004, A multi-physics inversion approach for the estimation of petrophysical properties of rock formations from well logs (INVITED SEMINAR): Earth Sciences Division, Lawrence Berkeley National Laboratory , Berkeley , CA , April 9.

Torres-Verdín, C. , and Salazar, J. M., 2004, Assessment of permeability from well logs based on rock-core calibration and simulation of the process of mud-filtrate invasion(INVITED SEMINAR): Bureau of Economic Geology , The University of Texas at Austin , Austin , TX , February 27.

Gao, G., and Torres-Verdín C., 2004, Novel integral equation approximations of electromagnetic scattering (SPECIAL INVITED SEMINAR): Advanced Modeling Technologies for Electromagnetic Applications in Well Logging, organized by Baker Atlas, Houston, Texas, February 20.

Alpak, F. O. Torres-Verdín C., and Sepehrnoori, K., 2004, Inverse modeling on distributed computer platforms: Industrial Affiliates Meeting, Joint Industry Project on Reservoir Simulation, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Texas, February 13.

Torres-Verdín, C., 2003, A multi-physics, integrated approach to formation evaluation using borehole geophysical measurements and 3D seismic data (SPECIAL INVITED SEMINAR): University of Oklahoma, Norman, OK, December 8.

Hou, J. and Torres-Verdín, C., 2003, Finite-difference modeling of EM fields using coupled potentials in 3D anisotropic media: applications to borehole logging (INVITED SEMINAR): Schlumberger Sugar Land Product Center, Sugar Land, Texas, November 10.

Chi, Shihong, and Torres-Verdín, C. , 2003, Assessment of mud filtrate invasion effects on full waveform acoustic well logging and radial profiling of formation elastic properties (INVITED ACOUSTICS SEMINAR): The University of Texas at Austin Department of Mechanical Engineering, Austin Texas, October 31.

Alpak, F. O. and Torres-Verdín C., 2003, Estimation of permeability and porosity from induction-logging and transient formation-pressure measurements: numerical and field results (INVITED LECTURE): Baker-Atlas, Houston, Texas, October 31.

Gambus, M. and Torres-Verdín, C., 2003, Integrated description of a Gulf-of-Mexico gas reservoir using 3D seismic data, well logs, core data, and time records of fluid production : Industrial Affiliates Meeting, Center for Subsurface Modeling, The University of Texas at Austin, Texas, October 21.

Torres-Verdín, C., 2003, Joint inversion of pre-stack 3D seismic data and time records of fluid production measurements (INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, October 6.

Torres-Verdín, C., 2003, Joint inversion of pre-stack 3D seismic data and time records of fluid production measurements (INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, October 6.

Torres-Verdín, C., 2003, Direct estimation of permeability and porosity from induction logs and transient formation-pressure measurements, numerical and field results(INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, October 4.

Torres-Verdín, C., 2003, Facies and fluid-unit identification in a tight-gas hydrocarbon field (INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, October 4.

Torres-Verdín, C., 2003, Integrated description of a Gulf-of-Mexico gas reservoir using 3D seismic data, well logs, core data, and time records of fluid production measurements (INVITED LECTURE): Mexican Institute for Petroleum, Mexico City, October 3.

Torres-Verdín, C., 2003, Formation evaluation at UT Austin (INVITED LECTURE): Phillips-Conoco, Houston, Texas, July 22.

Torres-Verdín, C., 2003, Joint stochastic inversion of 3D seismic data and well logs: interpolation of inter-well petrophysical properties and uncertainty analysis (INVITED SEMINAR): 2003 Landmark Graphics, Austin, Texas, July 1.

Torres-Verdín, C., 2003, A multi-physics, integrated approach to formation evaluation using borehole geophysical measurements and 3D seismic data (INVITED KEYNOTE SPEAKER): 2003 Petrophysics Conference, Halliburton Energy Services (Internal Conference), Houston, Texas, June 20.

Torres-Verdín, C., 2003, Joint stochastic inversion of well logs and 3D seismic data,(SPECIAL INVITED SEMINAR): The University of Texas at Austin Department of Geological Sciences, Austin, Texas, May 1.

Torres-Verdín, C., George, B., Delshad, M., Sigal, R., Zouioueche, F., and Anderson, B., 2003, A field case study to describe the presence of low-resistivity annuli using the physics of mud-filtrate invasion: sensitivity analysis of petrophysical parameters and assessment of induction and laterolog responses (INVITED LECTURE): Special Interest Group in Resistivity/MWD, Logging Characterization Consortium (LCC), Society of Professional Well Log Analysts (SPWLA), Houston, Texas, April 30.

Alpak, O. F., Torres-Verdín, C., and Habashy, 2003, Inversion of petrophysical parameters from array induction measurements honoring the physics of mud filtrate invasion (INVITED LECTURE): Special Interest Group in Resistivity/MWD, Logging Characterization Consortium (LCC), Society of Professional Well Log Analysts (SPWLA), Houston, Texas, April 30.

Torres-Verdín, C., 2003, Formation evaluation at UT Austin (INVITED LECTURE): Kerr-McGee Corporation, Houston, Texas, February 18.

Torres-Verdín, C., 2002, Formation evaluation at UT Austin (INVITED LECTURE): Shell International Exploration and Production, Houston, Texas, December 10.

Varela, O. J., Torres-Verdín, Sen, M. K., and Roy, I. G., 2002, Numerical studies to assess reservoir behavior with time-lapse 3D seismic data (INVITED POSTER PRESENTATION): Shell's Integrated Subsurface Conference (ISC)., New Orleans, Louisiana, September 24.

Torres-Verdín, C., 2002, Formation evaluation at UT Austin (INVITED LECTURE): ExxonMobil Upstream Research Co., Houston, Texas, September 26.

Alpak, O. F., Habashy, T. M., Dussan, E. V., and Torres-Verdín, C., 2001, Numerical simulation of mud filtrate invasion in horizontal wells and sensitivity analysis of array induction tools (INVITED LECTURE): Special Interest Group in Resistivity/MWD, Logging Characterization Consortium (LCC), Society of Professional Well Log Analysts (SPWLA), Houston, Texas, October 24.

Torres-Verdín, C., Wu, J., Sepehrnoori, K., and Delshad, M. 2001, Numerical simulation of mud filtrate invasion in deviated wells (INVITED LECTURE): Special Interest Group in Resistivity/MWD, Logging Characterization Consortium (LCC), Society of Professional Well Log Analysts (SPWLA), Houston, Texas, June 21.

Torres-Verdín, C., 2000, Integrated interpretation of 3D seismic and wireline data to delineate thin oil-producing sands in San Jorge Basin, Argentina, (INVITED LECTURE): Special Interest Group in Resistivity/MWD, Logging Characterization Consortium (LCC), Society of Professional Well Log Analysts (SPWLA), Houston, Texas, October 25.

Torres-Verdín, C., 2000, On some inverse problems in hydrocarbon reservoir characterization, (SPECIAL INVITED LECTURE): The University of Texas at Austin Department of Chemical Engineering, Austin, Texas, September 21.

Torres-Verdín, C., 2000, Geostatistical inversion of 3D seismic data to extrapolate petrophysical variables laterally away from wells, (INVITED LECTURE): Halliburton Logging Services, Houston, Texas , August 24.

Torres-Verdín, C., 2000, Geostatistical inversion of 3D seismic data to extrapolate petrophysical variables laterally away from wells, (INVITED LECTURE): BP-Amoco, Houston, Texas, July 26.

Torres-Verdín, C., 2000, Forward and inverse algorithms for the joint interpretation of time-lapse permanent measurements of pressure and DC resistivity, (SPECIAL INVITED SEMINAR): The University of Texas at Austin Institute for Geophysics, Austin, Texas, April 14.

Torres-Verdín, C., 1999, Geostatistical inversion of post-stack 3D seismic data, (INVITED LECTURE): Exxon Production Research Company, Houston, Texas, October 26.

Torres-Verdín, C., 1999, Geostatistical inversion of post-stack 3D seismic data for thin-sand delineation, (SPECIAL INVITED LECTURE): Texas Institute for Computational and Applied Mathematics (TICAM), The University of Texas at Austin, Austin, Texas, October 20.

Torres-Verdín, C., 1999, Geostatistical inversion of post-stack 3D seismic data, (INVITED LECTURE): Halliburton Logging Services, Houston, Texas, October 7.

Torres-Verdín, C., 1999, Geostatistical inversion of post-stack 3D seismic data, (INVITED LECTURE): Baker Atlas Logging Services, Houston, Texas, September 21.

Torres-Verdín, C., 1995, Aventuras electromagnéticas en geofísica aplicada: National Polytechnic Institute of México, Faculty of Engineering, Mexico City, Mexico, November 30, 1995 .

Habashy, T.M., and Torres-Verdín, C., 1995, A Fast and accurate three-dimensional multiple scattering approach involving large conductivity contrasts, and its application to cross-well resistivity Imaging: Northeastern University, Center for Electromagnetic Research, Boston, Massachusetts, November 15, 1995.

Torres-Verdín, C., Habashy, T.M., and Druskin, V., 1995, Aplicación de los métodos electromagnéticos de pozo en la evaluación y explotación de yacimientos de hidrocarburos: Mexican Institute for Petroleum , Mexico City, Mexico , August 22, 1995 .

Torres-Verdín, C., and Habashy, T.M., 1995, A new nonlinear approximation for elastic wave scattering: University of California, Berkeley, Department of Materials Science and Mineral Engineering, Berkeley, California, April 27, 1995.

Torres-Verdín, C., and Habashy, T.M., 1995, A nonlinear approximation for the rapid numerical simulation of 2.5-D electromagnetic problems: University of California, Berkeley, Department of Materials Science and Mineral Engineering, Berkeley, California, April 26, 1995.

Habashy, T.M., and Torres-Verdín, C., 1994, A nonlinear scattering approximation for the rapid inversion of large-scale electromagnetic problems with applications to cross-well tomography: IEEE Meeting, The Connecticut IEEE Section, Signal Processing Chapter, Yale University, New Haven, Connecticut, October 5.

Habashy, T.M., and Torres-Verdín, C., 1994, A nonlinear scattering approximation for the rapid numerical simulation and inversion of large-scale electromagnetic problems:Special Seminar, Research Laboratory of Electronics, Center for Electromagnetic Theory and Applications, Massachusetts Institute of Technology, Cambridge, Massachusetts, March 17.

Habashy, T.M., and Torres-Verdín, C., 1993, A nonlinear scattering approximation for the rapid numerical simulation of large-scale electromagnetic problems:Electromagnetics Series Seminar, Faculty of Electrical Engineering, Delft University of Technology, Delft, The Netherlands, September 13.