Carlos Torres-Verdín

Professor, UT Petroleum & Geosystems Engineering Dept.

Refereed Journal Publications

Publications In Press

•Ijasan, O., Torres-Verdín, C., Preeg, W. E., Rasmus, J., and Stockhausen, E., 2014, Field examples of the joint petrophysical inversion of logging-while-drilling resistivity and nuclear measurements acquired in high-angle and horizontal wells: in press, Geophysics.

•Torskaya, T., Shabro, V., Torres-Verdín, C., Salazar-Tío, R., and Revil, A., 2012, Grain shape effects on permeability, formation factor, and capillary pressure from pore-scale modeling: in press, Transport in Porous Media.

•Matuszyk, P. and Torres-Verdín, C.2013, Frequency domain simulation of LWD borehole sonic waveforms: in press, Geophysics.

Publications Under Review

• None at this time.

2013

•Xu, C., and Torres-Verdín, C., 2014, Petrophysical rock classification in the Cotton Valley tight-gas sandstone reservoir with a clustering pore-system orthogonality matrix: Interpretation, v. 2, no. 1, pp. T13-T23.

•Matuszyk, P. and Torres-Verdín, C. 2013, Back-propagating modes in elastic logging-while-drilling collars and their effect on PML stability: Computers and Mathematics with Applications, v. 66, no. 11, pp. 2335-2343.

•Ijasan, O., Torres-Verdín, C., and Preeg, W. E. 2013, Interpretation of porosity and fluid constituents from well logs using an interactive neutron-density matrix scale: Interpretation, v. 1, no. 2, pp. T143-T155.

•Xu, C., and Torres-Verdín, C., 2013, Interpretation of hydraulic rock types with resistivity logs in Tertiary deepwater turbidite reservoirs: Pore-scale modeling verified with field observations in the Gulf of Mexico, USA: Interpretation, v.1, no. 2, pp. T177-T185.

•Xu, C., and Torres-Verdín, C., 2013, Quantifying fluid distribution and phase connectivity with a simple 3D cubic pore network model constrained by NMR and MICP data: Computers and Geosciences, v. 61 (December), pp.94-103.

•Ijasan, O., Torres-Verdín, C., and Preeg, W. E. 2013, Inversion-based petrophysical interpretation of logging-while-drilling nuclear and resistivity measurements: Geophysics, v. 78, no. 6, pp. D473-D489.

•Revil, A., Woodruff, W. F., Torres-Verdín, C., and Prasad, M., 2013, Complex conductivity tensor of anisotropic hydrocarbon-bearing shales and mudrocks: Geophysics, v. 78, no. 6, pp. D403-D418.

•Heidari, Z., and Torres-Verdín, C., 2013, Inversion-based method for estimating total organic carbon and porosity, and for diagnosing mineral constituents from multiple well logs in shale-gas formations: Interpretation, v. 1, no. 1, pp. T113-T123.

•Xu, C., and Torres-Verdín, C., 2013, Pore system characterization and petrophysical rock classification using a bimodal Gaussian density function: Mathematical Geosciences, v. 45, pp. 753-771.

•Pardo, D., Matuszyk, P., Torres-Verdín, C., Mora, A., Muga, I., and Calo, V., 2013, Influence of borehole-eccentred tools on wireline and logging-while-drilling sonic logging measurements: Geophysical Prospecting, v. 61 (Supplement 1), pp. 268-283.

•Heidari, Z., Torres-Verdín, C., and Preeg, W. E., 2013, Improved estimation of mineral and fluid volumetric concentrations in thinly bedded carbonate formations: Geophysics, v. 78, no. 4, pp. D261-D269.

•Pardo, D. and Torres-Verdín, C., 2013, Sensitivity analysis for the appraisal of hydrofractures in horizontal wells with borehole resistivity measurements: Geophysics, v. 78, no. 4, pp. D209-D222.

•Matuszyk, P., Pardo, D., and Torres-Verdín, 2013, Frequency-domain finite-element simulations of 2D sonic wireline borehole measurements acquired in fractured and thinly bedded formations: Geophysics, v. 78, no. 4, pp. D193-D207.

•Ijasan, O., Torres-Verdín, C., and Preeg, W. E. 2013, Fast modeling of borehole neutron porosity measurements with a new spatial transport-diffusion approximation: Geophysics, v. 78, no. 3, pp. D151-D168.

•Gandhi, A., Torres-Verdín, C., Voss, B., Seminario Gros, F., and Gabulle, J., 2013, Correction of invasion effects on well logs in Camisea gas reservoirs, Peru, with the construction of static and dynamic multilayer petrophysical models: AAPG Bulletin, v. 97, no. 3, pp. 379-412.

•Nam, M. J., Pardo, D., and Torres-Verdín, C., 2013, Simulation of borehole-eccentered tri-axial induction measurements using a Fourier hp finite-element method: Geophysics, v. 78, no. 1, pp. D41-D52.

2012

•Heidari, Z., and Torres-Verdín, C., 2012, Estimation of dynamic petrophysical properties of water-bearing sands invaded with oil-base mud from the interpretation of multiple borehole geophysical measurements: Geophysics, v. 77, no. 6, pp. D209-D227.

•Shabro, V., Torres-Verdín, C., Javadpour, F., and Sepehrnoori, K., 2012, Finite-difference approximation for fluid-flow simulation and calculation of permeability in porous media: Transport in Porous Media, v. 93, no. 3, pp. 00000. PDF

•Shabro, V., Torres-Verdín, C., Javadpour, F., and Sepehrnoori, K., 2012, Finite-difference approximation for fluid-flow simulation and calculation of permeability in porous media: Transport in Porous Media, v. 93, no. 3, pp. 00000. PDF

•Mendoza, A., Ijasan, O., Torres-Verdín, C., Preeg, B., Rasmus, J., Radtke, R. J., and Stockhausen, E., 2012, Inversion-based method for interpretation of logging-while-drilling density measurements acquired in high-angle and horizontal wells: Geophysics, v. 77, no. 4, pp. D113-D127. PDF

•Heidari, Z.,Torres-Verdín, C., and Preeg, W. E., 2012, Improved estimation of fluid and mineral volumetric concentrations from well logs in thinly bedded and invaded formations: Geophysics, v. 77, no. 3, pp. WA79-WA98. PDF

•Matuszyk, P., Demkowicz, L., and Torres-Verdín, C., 2012, Solution of coupled acoustic-elastic wave propagation problems with anelastic attenuation using automatic hp-adaptivity: Computer Methods in Applied Mechanics and Engineering (CMAME), v. 200, issue 1-4, pp. 299-313. PDF

2011

•Salazar, J. M., and Torres-Verdín, C. and Wang, G.L., 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., Voss, B., 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: Geophysics, v. 74, no. 4, pp. E159-E180. 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-E73. 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

• Johns, A., Lake , L. W., Torres-Verdín , C., and Srinivasan, S., 2008, Seismic facies identification and classification using simple statistics : SPE Reservoir Evaluation and Engineering , v. 11, no. 6, pp. 984-990 .

• 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, A study to assess the value of 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-Verdín, C. , and Paszynski, M. , 2008, Simulation 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-Verdín, 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-Verdín, 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-Verdín, 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

• Pardo, D., Paszynski, M. , Torres-Verdín, C. , and Demkowicz L., 2008, Simulation of 3D DC borehole resistivity measurements with a goal-oriented hp finite-element method. Part I: Laterolog and LWD : Journal of the Serbian Society of Computational Mechanics, v. 1, no. 1 ., pp 62-63.

 

2007

• Malik, M., Torres-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, C. , Sun, B, and Dunn, K-J., 2007, A random-walk technique for simulating NMR measurements and 2D NMR maps of porous media with relaxing and permeable boundaries : Journal of Magnetic Resonance, v. 188, no. 1 (September), pp. 83-96. PDF

• Mallan, R. K., and Torres-Verdín, C. , 2007, Effects of petrophysical, environmental, and geometrical parameters on multi-component induction measurements acquired in high-angle wells : Petrophysics, v. 48, no. 4, pp. 271-288. PDF

• Pardo, D., Demkowicz L., Torres-Verdín, C. , and Paszynski, M. 2007, A sel-adaptive goal-oriented hp finite element method with electromagnetic applications. Part II, Electrodynamics : Computer Methods in Applied Mechanics and Engineering (CMAME), v. 2007-196, pp. 3585-3597. PDF

• Toumelin, E., and Torres-Verdín, 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-Verdín, 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-Verdín, 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, J. M., Preeg, W., Torres-Verdín, 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-Verdín, 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 1999 & 2000

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

1988-1996

• Morrison, H.F., Hoversten, G. M., Shoham, Y., and Torres-Verdín, 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-Verdín, C., 1996, A nonlinear approximation for the pressure behavior of heterogeneous reservoirs: SPE Journal, V. 1, no. 3. PDF

• De Hoop, A., Oristaglio, M., Habashy, T.M., and Torres-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, 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-Verdín, Carlos, 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.