Research Objectives:

Integration

Research Spotlight:

Software Modules

Research Group:

Faculty - Staff - Students

List of Journal Publications:

We have been actively engaged in disclosing our research work in technical journals and refereed conference abstracts. The list of publications below comprises technical material listed in chronological order and published since the summer of 1999.

Publications Under Review

NONE AT THIS TIME

Publications In Press

2011

Salazar, J. M., and Torres-Verdín, C., and G. L. Wang, 2011, Effects of surfactant-emulsified oil-based mud on borehole resistivity measurements: SPE Journal, v. 16, no. 3, pp. 608-624. PDF
Pardo, D., Matuszyk, P., Muga, I., Torres-Verdín, C., Mora, A., and Calo, V. M., 2011, Simulation of wireline sonic logging measurements acquired with Borehole-Eccentered tools using a high-order adaptive finite-element method: Journal of Computational Physics, v. 230, Issue 16, pp. 6320-6333. PDF
Mallan, R., Torres-Verdín, C., and Ma, J., 2011, Simulation of borehole sonic measurements in dipping, anisotropic, and invaded formations: Geophysics, v. 76, no. 4, pp. E127-E139. PDF
Heidari, Z., Torres-Verdín, C., Mendoza, A., and Wang, G. L., 2011, Assessment of residual hydrocarbon saturation with the combined quantitative interpretation of resistivity and nuclear logs: Petrophysics, v. 52, no. 3, pp. 217-237. PDF
Mimoun, J., Torres-Verdín, C.., and Preeg, W. E., 2011, Quantitative interpretation of pulsed neutron capture logs, Part I: fast numerical simulation: Geophysics, v. 76, no. 3, pp. E81-E93. PDF
Mimoun, J., Torres-Verdín, C., and Preeg, W. E., 2011, Quantitative interpretation of pulsed neutron capture logs, Part II: inversion of measurements in thinly-bedded formations: Geophysics, v. 76, no. 3, pp. E95-E103. PDF
Pardo, D., Nam, M. J., Torres-Verdín, C., Hoversten, M., and Garay, I., 2011, Simulation of marine controlled source electromagnetic measurements using a parallel Fourier hp-finite element method: Computational Geosciences, v. 15, no. 1, pp. 53-67. PDF
Alpak, F. O., Habashy, T. M., Abubakar, A., Torres-Verdín, C., and Sepehrnoori, K., 2011, A multiplicative regularized Gauss-Newton algorithm and its application to the joint inversion of induction logging and near-borehole pressure measurements: Progress in Electromagnetics Research B, v. 29, pp. 105-138. PDF
Angeles, R., Torres-Verdín, C., Sepehrnoori, K., and Elshahawi, H., 2011, History matching of multiphase-flow formation-tester measurements acquired with focused-sampling probes in deviated wells: Petrophysics, v. 52, no. 1, pp. 14-31. PDF

2010

Moinfar, A., Mallan, R. K., Torres-Verdín, C., and Angeles, R., 2010, Time-lapse variations of multi-component electrical resistivity measurements acquired in high-angle wells: Petrophysics, v. 51, no. 6, pp. 408-427. PDF
Angeles, R., Hadibeik, A., Torres-Verdín, C., and Sepehrnoori, K., 2010, Estimation of capillary pressure and relative permeability from formation-tester measurements using Design of Experiment and Data-Weighing Inversion: Synthetic and Field Examples: Journal of Petroleum Science and Engineering, v. 75, Issues 1-2, pp. 19-32. PDF
Nam, M. J., Pardo, D., and Torres-Verdín, C., 2010, Assessment of Delaware and Groningen effects on dual-laterolog measurements with a self-adaptive hp finite-element method: Geophysics, v. 75, no. 6, pp. F143-F149. PDF
Alpak, F. O. and, Torres-Verdín, C., 2010, Data-adaptive resolution method for the parametric three-dimensional inversion of triaxial borehole electromagnetic measurements: Progress in Electromagnetics Research B, v. 25, pp. 93-111. PDF
Sanchez-Ramirez, J., Torres-Verdín, C., Wolf, D., Wang, G. L., Mendoza, A., Liu, Z.., and Schell, G., 2010, Field examples of the combined petrophysical inversion of gamma-ray, density, and resistivity logs acquired in thinly-bedded clastic rock formations: Petrophysics, v. 51, no. 4, pp. 247-263. PDF
Malik, M., Dindoruk, B., Elshahawi, H., and Torres-Verdín, C., 2010, Numerical investigation of oil-base mud contamination in condensates: from cleanup to sample quality: Journal of Natural Gas and Engineering, v. 2, Issues 2-3, pp. 69-78. PDF
Nam, M. J., Pardo, D., and Torres-Verdín, C., 2010, Simulation of triaxial induction measurements in dipping, invaded, and anisotropic formations using a Fourier series expansion in a nonorthogonal system of coordinates and a self-adaptive hp finite-element method: Geophysics, v. 75, no. 3, pp. F83-F95. PDF
Merletti, G. and Torres-Verdín, C., 2010, Detection and spatial delineation of thin-sand sedimentary sequences with joint stochastic inversion of well logs and 3D prestack seismic amplitude data: SPE Reservoir Evaluation and Engineering, v. 13, no. 2, pp. 246-264. PDF
Mendoza, A., Torres-Verdín, C., and Preeg, W. E., 2010, Linear iterative refinement method for the rapid simulation of borehole nuclear measurements, Part II: high-angle and horizontal wells: Geophysics, v. 75, no. 2, pp. E79-E90. PDF
Nam, M. J., Pardo, D., Torres-Verdín, C., Hwang, S., Park, K. G., and Lee, C., 2010, Simulation of eccentricity effects on short- and long-normal logging measurements using a Fourier- h- finite-element method: Exploration Geophysics, v. 41, pp. 1-9, Butsuri-Tansa, v. 63, pp. 1-9, and Geegoo-Mulli-wa-Mulli-Tamsa, v. 13, pp. 1-9. PDF
Mendoza, A., Torres-Verdín, C., and Preeg, W. E., 2010, Linear iterative refinement method for the rapid simulation of borehole nuclear measurements, Part I: Vertical wells: Geophysics, v. 75, no. 1, pp. E9-E29. PDF
Paszynski, M., Pardo, D., Torres-Verdín, C., Demkowicz, L., and Calo, V., 2010, A parallel direct solver for the self-adaptive hp finite element method: Journal of Parallel and Distributed Computing, v. 70, issue 3, pp. 270-281. PDF
Odumosu, T., Torres-Verdín, C., Salazar, J. M., Ma, J., Boss, V., and Wang, G. L., 2009, Estimation of dry-rock elastic moduli based on the simulation of mud-filtrate invasion effects on borehole acoustic logs: SPE Reservoir Evaluation and Engineering, v. 12, no. 6, pp. 898-911. PDF
Wang, G. L., Torres-Verdín, C., and Gianzero, S., 2009, Fast simulation of triaxial borehole induction measurements acquired in axially symmetrical and transversely isotropic media: Geophysics, v. 74, no. 6, pp. E233-E249. PDF
Malik, M., Torres-Verdín, C., Sepehrnoori, K., Jackson, R., Weinheber, P., Mullins, O. C., Elshahawi, H., Dindoruk, B., and Hashem, M., 2009, Comparison of wireline formation-tester sampling with focused and conventional probes in the presence of oil-base mud-filtrate invasion: Petrophysics, v. 50., no. 5, pp. 376-395. PDF
Jin, G., Torres-Verdín, C., and Toumelin, E., 2009, Comparison of NMR simulations of porous media derived from analytical and voxelized representations: Journal of Magnetic Resonance, v. 200, no. 2 (October), pp. 313-320. PDF

2009

Yang, W., Torres-Verdín, C., Hou, J., and Zhang, Z., 2009, 1D subsurface EM fields excited by energized steel casing: in press, Geophysics. PDF
Uzoh, E., Mendoza, A., Torres-Verdín, C., Preeg, W. E., Stockhausen, E., and Rasmus, J. C., 2009, Influence of relative dip angle and bed-thickness effects on LWD density images acquired in high-angle and horizontal wells: Petrophysics, v. 50, no. 3, pp. 269-293. PDF
Michler, C., Demkowicz, L., and Torres-Verdín, C., 2009, Numerical simulation of borehole acoustic logging in the frequency and time domains with hp-adaptive finite elements: Computer Methods in Applied Mechanics and Engineering (CMAME), v. 198, issue 21-26, pp. 1821-1838. PDF
Malik, M., Torres-Verdín, C., and Sepehrnoori, K., 2009, A dual-grid automatic-history-matching technique with applications to 3D formation testing in the presence of oil-base muds: SPE Journal, v. 14, no. 1, pp. 164-181. PDF
Angeles, R., Torres-Verdín, C., Sepehrnoori, K., and Malik, M., 2009, Prediction of formation-tester fluid-sample quality in highly-deviated wells: Petrophysics, v. 50, no. 1, pp. 32-48. PDF
Nam, M. J., Pardo, D., and Torres-Verdín, C., 2009, Simulation of DC dual-laterolog measurements in complex formations: A Fourier-series approach with nonorthogonal coordinates and self-adaptive finite elements: Geophysics, v. 74, no. 1, pp. E31-E43 PDF
Salazar, J. M., and Torres-Verdín, C., 2009, Quantitative comparison of processes of oil- and water-base mud-filtrate invasion and corresponding effects on borehole resistivity measurements: Geophysics, v. 74, no. 1, pp. E57-E7. PDF
Wang, G. L., Torres-Verdín, C., Salazar, J. M., and Voss, B., 2009, Fast 2D inversion of large borehole EM induction data sets with an efficient Fréchet-derivative approximation: Geophysics, v. 74, no. 1, pp. E75-E91 PDF

2008

Alpak, F. O., Torres-Verdín, C., and Habashy, T. M., 2008, Estimation of in-situ petrophysical properties from wireline formation tester and induction logging measurements: A joint inversion approach: Journal of Petroleum Science and Engineering, v. 63, Issues 1-4, pp. 1-17. PDF
Pardo, D., Torres-Verdín, C., and Zhang, Z., 2008, Sensitivity study of borehole-to-surface and crosswell electromagnetic measurements acquired with energized steel casing to water displacement in hydrocarbon-bearing layers: Geophysics, v. 73, no. 6, pp. F261-F268. PDF
Pardo, Torres-Verdín, C., Nam, M. J., Paszynski, M., and D., Calo, V. M., 2008, Fourier series expansion in a non-orthogonal system of coordinates for the simulation of 3D alternating current resistivity measurements: Computer Methods in Applied Mechanics and Engineering (CMAME), v. 197, issue 45-48, pp. 3836-3849. PDF
Pardo, D., Demkowicz L., Torres-Verdín, C., and Michler, C., 2008, PML enhanced with a self-adaptive goal-Oriented hp finite-element method: simulation of through-casing borehole resistivity measurements: SIAM Journal on Scientific Computing, Special Issue on Computational Science and Engineering, v. 30, no. 6, pp. 2948-2964. PDF
Gambús-Ordaz, M. and Torres-Verdín, C., 2008, Assessing the value of 3D post-stack seismic amplitude data in forecasting fluid production from a Gulf-of-Mexico reservoir: Journal of Petroleum Science and Engineering, v. 62, issues 1-2, pp. 1-15. PDF
Toumelin, E., Torres-Verdín, C., and Bona, N., 2008, Improving the petrophysical interpretation of saturated rocks with wide-band electromagnetic measurements: SPE Journal, v. 13, no. 2, pp. 205-215. PDF
Pardo, D., Nam, M.J., Torres-Verdín, C., and Paszynski, M., 2008, A parallel, Fourier finite-element formulation with an iterative solver for the simulation of 3D LWD measurements acquired in deviated wells: Progress in Electromagnetic Research Symposium (PIERS) Online, v. 4., no. 5, pp. 551-555. PDF
Salazar, J. M., Wang, G. L., Torres-Verdín, C., and Lee, H. J., 2008, Combined simulation and inversion of SP and resistivity logs for the estimation of connate water resistivity and Archie’s cementation exponent: Geophysics, v. 73, no. 3, pp. E107-E114. PDF
Pardo, D., Torres-Verdin, C., Paszynski, M., 2008, Simulations of 3D DC Borehole Resistivity Measurements with a Goal-Oriented hp-Finite-Element Method. Part II: Through Casing Resistivity Instruments. Computational Geosciences, v. 12, issue 1, pp. 83-89. PDF
Pardo, D., Calo, V. M., Torres-Verdin, C., Nam, M. J., and Paszynski, M., 2008, Fourier series expansion in a non-orthogonal system of coordinates for the simulation of 3D DC Borehole Resistivity Measurements. Computer Methods in Applied Mechanics and Engineering (CMAME), v. 197, issue 21-24, pp. 1906-1925. PDF
Toumelin, E., and Torres-Verdin, C., 2008, Object-oriented approach for the pore-scale simulation of DC electrical conductivity of two-phase saturated porous media. Geophysics, v. 73, no. 2, pp. E67-E79. PDF
Malik, M., Salazar, J. M., Torres-Verdin, C., Wang, G. L., Lee, H. J., and Sepehrnoori, K., 2008, Effects of petrophysical properties on array-induction measurements acquired in the presence of oil-base mud-filtrate invasion. Petrophysics, v. 49, no. 1, pp. 74-92. PDF

2007

Malik, M., Torres-Verdin, C., Sepehrnoori, K., Dindoruk, B., Elshahawi, H., and Hashem, M., 2007, History matching and sensitivity analysis of probe-type formation-tester measurements acquired in the presence of oil-base mud-filtrate invasion. Petrophysics, v. 48, no. 6, pp. 454-472. PDF
Malik, M., Torres-Verdin, C., and Sepehrnoori, K., 2007, Axially-symmetric compositional simulation of formation tester measurements. Journal of Petroleum Science and Engineering, v. 59, issues 3-4, pp. 333-349 PDF
Pardo, D., García-Castillo, L. E., Demkowicz L. F., and Torres-Verdin, C., 2007, A two-dimensional self-adaptive hp finite-element method for the characterization of waveguide discontinuities, Part II - goal-oriented hp-adaptivity. Computer Methods in Applied Mechanics and Engineering (CMAME), v. 196, issue 49-52, pp. 4811-4822. PDF
Angeles, R., Torres-Verdin, C., Yuan, C., and Lee, H. J., 2007, Spatial sensitivity functions of two-phase formation-tester measurements acquired in vertical wells. Petrophysics, v. 48, no. 5, pp. 362-379. PDF
Angeles, R., Torres-Verdin, C., Lee, H. J., Alpak, F. O., and Sheng, J., 2007, Estimation of permeability and permeability anisotropy from straddle-packer formation-tester measurements based on the physics of two-phase immiscible flow and invasion. SPE Journal, v. 12, no. 3, pp 339-354. PDF
Toumelin, E., and Torres-Verdin, C., Sun, B, and Dunn, K-J., 2006, A random-walk technique for simulating NMR measurements and 2D NMR maps of porous media with relaxing and permeable boundaries. Journal of Magnetic Resonance. PDF
Mallan, R. K., and Torres-Verdin, C., 2006, Effects of petrophysical, environmental, and geometrical parameters on multi-component induction measurements acquired in high-angle wells., Petrophysics. PDF
Pardo, D., Demkowicz L., Torres-Verdin, C., and Paszynski, M. 2005, A goal-oriented hp-adaptive finite element method with electromagnetic applications, Part II, Electrodynamics. Computer Methods in Applied Mechanics and Engineering (CMAME). PDF
Toumelin, E., and Torres-Verdin, C., 2007, 2D pore-scale simulation of wide-band dielectric dispersion of saturated rocks. Geophysics, v. 72, no. 3, pp. F97-F110. PDF
Pardo, D., Torres-Verdin, C., and Demkowicz L., 2007, Feasibility study for 2D frequency-dependent electromagnetic sensing through casing. Geophysics, v. 72, no. 3, pp. F111-F118. PDF
Jin, G., Torres-Verdin, C., Devarayan, S., Toumelin, E., and Thomas, E. C., 2007, Pore-scale analysis of the Waxman-Smits shaly-sand conductivity model. Petrophysics, v. 48, no. 2, pp. 104-120. PDF
Mendoza, A., Preeg, W., Torres-Verdin, C., and Alpak, F. O., 2007, Monte Carlo modeling of nuclear measurements in vertical and horizontal wells in the presence of mud-filtrate invasion and salt mixing. Petrophysics, v. 48, no. 1, pp. 28-44. PDF
Contreras, A., Torres-Verdin, C., and Fasnacht, T., 2007, Sensitivity analysis of data-related factors controlling AVA simultaneous inversion of partially stacked seismic amplitude data: Application to deepwater hydrocarbon reservoirs in the central Gulf of Mexico. Geophysics, v. 72, no. 1, pp. C19-C29. PDF

2006

Salazar, J. M., Torres-Verdín, C., Alpak, F. O., Habashy, T. M., and Klein, J. D., 2006, Estimation of permeability from array induction measurements: applications to the petrophysical assessment of tight-gas sands. Petrophysics, v. 47, no. 6, Dec 2006; p.p. 527-544; PDF
Pardo, D., Demkowicz L., Torres-Verdín, C., and Paszynski, M. 2006, Two-dimensional high-accuracy simulation of logging-while-drilling (LWD) measurements using a self-adaptive goal-oriented hp finite element method. SIAM Journal on Applied Mathematics, v. 66, no. 6, pp. 2085-2106. PDF
Chi, S., Torres-Verdín, C., Wu, J., and Alpak, F. O., 2006, Assessment of mud-filtrate invasion effects on borehole acoustic logs and radial profiling of formation elastic properties. SPE Reservoir Evaluation and Engineering, v. 9, no. 5, pp. 553-564. PDF
Toumelin, E., Torres-Verdín, C., Sun, B., and Dunn, K.-J., 2006, Limits of 2D NMR interpretation techniques to quantify pore size, wettability, and fluid type: a numerical sensitivity study. SPE Journal, v. 11, no. 3, pp. 354-363. PDF
Hou, J., Mallan, R. K., and Torres-Verdín, C., 2006, Finite-difference simulation of borehole EM measurements in 3D anisotropic media using coupled scalar-vector potentials. Geophysics, v. 71, no. 5, pp. G225-G233. PDF
Torres-Verdín, C., Alpak, F. O., and Habashy, T. M., 2006, Petrophysical inversion of borehole array-induction log: Part II - Field data examples. Geophysics, v. 71, no. 5, pp. G261-G268. PDF
Gao, G., and Torres-Verdín, C., 2006, Efficient numerical simulation of axisymmetric electromagnetic induction measurements using a high-order generalized extended Born approximation. IEEE Transactions on Geoscience and Remote Sensing, v. 44, no. 9, pp. 2445-2453. PDF
Contreras, A., Torres-Verdín, C., and Fasnacht, T., 2006, AVA simultaneous inversion of partially stacked seismic amplitude data for the spatial delineation of lithology and fluids units of deepwater hydrocarbon reservoirs in the central Gulf of Mexico. Geophysics, v. 71, no. 4, pp. E41-E48. PDF
Alpak, F. O., Torres-Verdín, C., and Habashy, T. M., 2006, Petrophysical inversion of borehole array-induction logs: Part I - Numerical examples. Geophysics, v. 71, no. 4, pp. F101-F119. PDF
Pardo, D., Torres-Verdín, C., and Demkowicz L., 2006, Simulation of multifrequency borehole resistivity measurements through metal casing using a goal-oriented hp finite-element method: IEEE Transactions on Geoscience and Remote Sensing, v. 44, no. 8, pp. 2125-2134. PDF
Contreras, A., Torres-Verdín, C., Kvien, K., Chesters, W., and Fasnacht, T., 2006, Extrapolation of flow units away from wells with 3D pre-stack seismic amplitude data: field example, Petrophysics, v. 47, no. 3, pp. 223-238. PDF
Varela, O. J., Torres-Verdín, C., Sen, M. K., and Roy, I. G., 2006, Using time-lapse 3D seismic data to detect dynamic reservoir behavior due to water-oil displacement: a numerical study based on one-dimensional prestack inversion, Journal of Geophysics and Engineering, v. 3, no. 2, 177-193. PDF
Varela, O. J., Torres-Verdín, C., and Sen, M. K., 2006, Enforcing smoothness and assessing uncertainty in nonlinear one-dimensional pre-stack seismic inversion: Geophysical Prospecting, v. 54, no. 4, 239 - 259. PDF
Gao, G., and Torres-Verdín, C., 2006, A high-order generalized extended Born approximation for electromagnetic scattering: IEEE Transactions on Antennas and Propagation, v. 54, no. 4, 1243 - 1256. PDF
Pardo, D., Demkowicz L., Torres-Verdín, C., and Tabarovsky, L., 2006, A goal-oriented hp-adaptive finite element method with electromagnetic application, Part I: electrostatics: International Journal for Numerical Methods in Engineering, v. 65, no. 8, 1269-1309. PDF
Varela, O. J., Torres-Verdín, C., and Lake, L. 2006, On the value of 3D seismic amplitude data to reduce uncertainty in the forecast of reservoir production: Journal of Petroleum Science and Engineering, v. 50, 269-284. PDF

2005

Salazar, J. M., Torres-Verdín, C., and Sigal, R., 2005, Assessment of permeability from well logs based on core calibration and simulation of mud-filtrate invasion: Petrophysics, v. 46, no. 6, 434-451. PDF
Roy, I. G., Sen, M. K., and Torres-Verdín, C., 2005, Full waveform seismic inversion using a distributed system of computers: Concurrency and Computation: Practice and Experience, v. 17, no. 11, 1365-1385. PDF
Kurc, T., Catalyurek, U., Zhang, X., Saltz, J., Martino, R., Wheeler, M., Peszynska, M., Sussman, Hansen, C. M., Sen, M., Seifoullaev, R., Stoffa, P., Torres-Verdín, C., and Parashar, M., 2005, A simulation and data analysis system for large-scale, data-driven oil reservoir simulation studies: Concurrency and Computation: Practice and Experience, v. 17, no. 11, 1441-1467. PDF
Wu, J., Torres-Verdín, C., Sepehrnoori, K., and Proett, M., 2005, The influence of water-base mud properties and petrophysical parameters on mudcake growth, filtrate invasion, and formation pressure: Petrophysics, v. 46, no. 1, 14-32. PDF
Gao, G., Torres-Verdín, C., and Habashy, T. M., 2005, Analytical techniques to evaluate the integrals of 3D and 2D spatial dyadic Green's functions: Progress in Electromagnetics Research (PIER), v. 52, no. 1, 47-80. PDF

2004

Roy, I. G., Sen, M. K., Torres-Verdín, C., and Varela, O. J., 2004, Pre-stack inversion of a Gulf-of-Thailand ocean-bottom cable (OBC) data set: Geophysics, v. 69, no. 6, 1470-1477. PDF
Alpak, O. F., Torres-Verdín, C., and Sepehrnoori, K., 2004, Estimation of axisymmetric spatial distributions of permeability and porosity from pressure-transient data acquired with in situ permanent sensors: v. 44, no. 3-4, 231-267, Journal of Petroleum Science and Engineering. PDF
Alpak, O. F., Torres-Verdín, C., and Habashy, T. M., 2004, Joint inversion of pressure and DC resistivity measurements acquired with in-situ permanent sensors: a numerical study: Geophysics, v. 69, no. 5, 1173-1191. PDF
Gao, G., Torres-Verdín, C., and Fang, S., 2004, Fast 3D modeling of borehole induction data in dipping and anisotropic formations using a novel approximation technique: Petrophysics, v. 45, no. 4. PDF
Alpak, O. F., Habashy, T. M., Torres-Verdín, C., and Dussan, E. V., 2004, Joint inversion of pressure and time-lapse electromagnetic logging measurements: Petrophysics, v. 45, no. 3, 251-267. PDF
Wu, J., Torres-Verdín, C., Sepehrnoori, K., and Delshad, M., 2004, Numerical simulation of mud-filtrate invasion in deviated wells: SPE Reservoir Evaluation and Engineering, v. 7, no. 2, 143-154. PDF
George, B. K., Torres-Verdín, C., Delshad, M., Sigal, R., Zouioueche, F., and Anderson, B., 2004, Assessment of in-situ hydrocarbon saturation in the presence of deep invasion and highly saline connate water: Petrophysics, v. 45, no. 2, 141-156. PDF

2003

Torres-Verdín, C., Chunduru, R. K., and Mezzatesta, A. G., 2003, Integrated interpretation of wireline and 3D seismic data to delineate thin oil-producing sands in San Jorge Basin, Argentina: SPE Reservoir Evaluation and Engineering, v. 6, no. 6, 369-375. PDF
Alpak, O. F., Dussan V., E. B., Habashy, T. M., and Torres-Verdín, C., 2003, Numerical simulation of mud filtrate invasion in horizontal wells and sensitivity analysis of array induction tools: Petrophysics, v. 44, no. 6, 396-411. PDF
Alpak, O. F., Torres-Verdín, C., Sepehrnoori, K., and Fang, S., 2003, An extended Krylov subspace method to simulate single-phase pressure behavior of axisymmetric and anisotropic porous media: Journal of Petroleum Science and Engineering, v. 40, no. 3-4, 121-144. PDF
Toumelin, E., Torres-Verdín, C., and Chen, S. 2003, Modeling of multiple echo-times NMR measurements for complex pore geometries and multiphase saturations: SPE Reservoir Evaluation and Engineering, v. 6, no. 4, 234-243. PDF
Toumelin, E., Torres-Verdín, C., and Chen, S., and Fischer, M. 2003, Reconciling NMR measurements and numerical simulations: assessment of temperature and diffusive coupling effects on two-phase carbonate samples: Petrophysics, v. 44, no. 2, 91-107. PDF
Alpak, F. O., Torres-Verdín, C., Sepehrnoori, K., and Fang, S., 2003, Numerical sensitivity studies for the joint inversion of pressure and DC resistivity measurements acquired with in-situ permanent sensors: Journal of Petroleum Technology, v. 55, no. 2, 70-72. PDF

2001

Torres-Verdín, C., and Habashy, T.M., 2001, Rapid numerical simulation of axisymmetric single-well induction data using the extended Born approximation: Radio Science, v. 35, no. 6, 1287-1306. PDF

2000 & 1999

Torres-Verdín, C., Druskin, V., Fang, S., Knizhnerman, L., and Malinverno, A., 2000, A dual-grid nonlinear inversion technique with applications to the interpretation of DC resistivity data: Geophysics, v. 65, no. 6, 1733-1745. PDF
Malinverno, A., and Torres-Verdín, C., 2000, Bayesian inversion of DC electrical measurements applied to reservoir monitoring: Inverse Problems, Invited, Special Section on Electromagnetic Imaging and Inversion of the Earth's Subsurface, v. 16, no. 5, 1343-1356. PDF
Torres-Verdín, C., Victoria, M., Merletti, G., and Pendrel, J., 1999, Trace-based and geostatistical inversion of 3-D seismic data for thin-sand delineation, an application to San Jorge Basin, Argentina: The Leading Edge, v. 18, September Issue, pp. 1070-1076. PDF

1996 & 1988

Morrison, H.F., Hoversten, G. M., Shoham, Y., and Torres-Verdin, C., 1996, Electromagnetic mapping of electrical conductivity beneath the Columbia Basalts: Geophysical Prospecting, v. 44, 963-986.
Kuchuk, F. J., Habashy, T.M., and Torres-Verdin, C., 1996, A nonlinear approximation for the pressure behavior of heterogeneous reservoirs: SPE Journal, v. 1, no. 3, 229-241. PDF
De Hoop, A., Oristaglio, M., Habashy, T.M., and Torres-Verdin, C., 1995, Asymptotic ray theory for transient diffusive electromagnetic fields: Radio Science, v. 31, no. 1, 41-49. PDF
Wilt, M., Lee, K. H., Morrison, H.F., Becker, A., Torres-Verdin, C., Alumbaugh, D., and Tseng, H., 1995, Crosshole electromagnetic tomography: A new technology for oil field characterization: The Leading Edge, March-April Issue, 173-177. PDF
Torres-Verdin, C., and Habashy, T.M., 1995, A two-step linear inversion of two-dimensional conductivity: IEEE Transactions on Antennas and Propagation, v. 43, no. 4, 405-415. PDF
Torres-Verdin, C., and Habashy, T.M., 1994, Rapid 2.5-dimensional forward modeling and inversion via a new nonlinear scattering approximation: Radio Science (Special Issue on Fast Forward and Inverse Scattering Methods), v. 29, no. 4., 1051-1079. PDF
Torres-Verdin, C., and Bostick, F.X., Jr., 1992, Principles of spatial surface electric field filtering in magnetotellurics: Electromagnetic Array Profiling (EMAP): Geophysics, v. 57, no. 4, 603-622. PDF
Torres-Verdin, C., and Bostick, F.X., Jr., 1992, Implications of the Born approximation for the magnetotelluric problem in three-dimensional environments: Geophysics, v. 57, no. 4, 587-602. PDF
Park, S., K., and Torres-Verdin, C., 1988, A systematic approach to the interpretation of magnetotelluric data in volcanic environments with applications to the quest of magma in Long Valley, California: Journal of Geophysical Research, v. 93, no. B11.2, 13265-13283.

Technical Reports:

2001 to 2009

Torres-Verdín, C., 2009, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 12-14.
Torres-Verdín, C., 2008, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 13-15.
Torres-Verdín, C., Hoversten, G. M., Lee, K. H., Newman, G., and Nihei, K., 2008, Combined Borehole Seismic and Electromagnetic Inversion for High-Resolution Petrophysical Assessment of Hydrocarbon Reservoirs, Final Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, January 1, submitted to the US Department of Energy under Contract No. DE-FC26-04NT15507.
Torres-Verdin, C., 2007,Paszynski, M., Pardo, D., Demkowicz, L., and Calo, V., Multi Level Direct Substructuring Multi Frontal Parallel Direct Solver for hp-FEM, ICES Report 07-33, The University of Texas at Austin, Austin, Texas.
Torres-Verdin, C., Pardo, D., Nam, M. J., Paszynski, M., and Calo, V., Fourier Series Expansion in a Non-Orthogonal System of Coordinates for the Simulation of 3D AC Borehole Resistivity Measurements, ICES Report 07-39, The University of Texas at Austin, Austin, Texas.
Torres-Verdín, C., Pardo, D., Calo, V., and Nam, M.J., Fourier Series Expansion in a Non-Orthogonal System of Coordinates for Simulation of 3D Borehole Resistivity Measurements, Part I: DC, ICES Report 07-20, The University of Texas at Austin, Austin, Texas.
Torres-Verdín, C., 2007, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 15-17.
Torres-Verdín, C., 2006, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 16-18.
Paszynski, M., Pardo, D., Demkowicz, L., and Torres-Verdín, C., 2006, Parallel hp-Finite Element Simulations of 3D Resistivity Logging Instruments, Institute for Computational Engineering and Sciences (ICES), The University of Texas at Austin, ICES Report 06-01, January.
Torres-Verdín, C., 2005, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 17, 2005.
Torres-Verdín, C., and Sen, M.K., 2004, Integrated Approach for the Petrophysical Interpretation of Post and Pre-Stack 3-D Seismic Data, Well-Log Data, Core Data, Geological Information and Reservoir Production Data via Bayesian Stochastic Inversion, Final Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, November 20, submitted to the US Department of Energy under Contract No. DE-FC26-00BC15305.
Torres-Verdín, C., 2004, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 19, 2004
Torres-Verdín, C., and Sen, M. K., 2003, Integrated Approach for the Petrophysical Interpretation of Post- and Pre-Stack 3-D Seismic Data, Well-Log Data, Core Data, Geological Information and Reservoir Production Data via Bayesian Stochastic Inversion, Third Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, November 2, submitted to the US Department of Energy under Contract No. DE-FC26-00BC15305.
Torres-Verdín, C., 2003, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 21, 2003
Torres-Verdín, C., and Sen, M. K., 2002, Integrated Approach for the Petrophysical Interpretation of Post- and Pre-Stack 3-D Seismic Data, Well-Log Data, Core Data, Geological Information and Reservoir Production Data via Bayesian Stochastic Inversion, Second Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, November 2, submitted to the US Department of Energy under Contract No. DE-FC26-00BC15305.
Torres-Verdín, C., 2002, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 22, 2002.
Torres-Verdín, C., and Sen, M. K., 2001, Integrated Approach for the Petrophysical Interpretation of Post- and Pre-Stack 3-D Seismic Data, Well-Log Data, Core Data, Geological Information and Reservoir Production Data via Bayesian Stochastic Inversion, First Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, November 2, submitted to the US Department of Energy under Contract No. DE-FC26-00BC15305.
Torres-Verdín, C., 2001, Formation Evaluation Annual Report, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin, Austin, Texas, August 23, 2001.
Alpak, F. O., Torres-Verdín, C., Sepehrnoori, K., Wu, J., and Fang, S., 2001, Simulating the pressure response of injection wells with and extended Krylov subspace method, Formation Evaluation Research Program, Center for Petroleum and Geosystems Engineering, The University of Texas at Austin.