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Proceedings Papers

Inversion-Based Thomas-Stieber Approach to Estimate Storage and Flow Properties of Heterogeneous Shaly Sandstones

Ali Eghbali, Carlos Torres-Verdín, Elias R. Acosta
Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023
Paper Number: SPWLA-2023-0067
https://doi.org/10.30632/SPWLA-2023-0067
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View Paper titled, Inversion-Based Thomas-Stieber Approach to Estimate Storage and Flow Properties of Heterogeneous Shaly Sandstones
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Proceedings Papers

Best Practices in Automatic Permeability Estimation: Machine-Learning Methods vs. Conventional Petrophysical Models

Oriyomi Raheem, Wen Pan, Carlos Torres-Verdín, Misael M. Morales
Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023
Paper Number: SPWLA-2023-0084
https://doi.org/10.30632/SPWLA-2023-0084
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View Paper titled, Best Practices in Automatic Permeability Estimation: Machine-Learning Methods vs. Conventional Petrophysical Models
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Proceedings Papers

Using Formation-Tester Measurements to Estimate Depth of Invasion and Water Saturation in Deeply-Invaded Tight-Gas Sandstones

Tarek S. Mohamed, Mohamed Bennis, Carlos Torres-Verdín, German Merletti, Camilo Gelvez
Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023
Paper Number: SPWLA-2023-0042
https://doi.org/10.30632/SPWLA-2023-0042
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View Paper titled, Using Formation-Tester Measurements to Estimate Depth of Invasion and Water Saturation in Deeply-Invaded Tight-Gas Sandstones
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Proceedings Papers

3D Electromagnetic Modeling and Quality Control of Ultradeep Borehole Azimuthal Resistivity Measurements

Sofia Davydycheva, Carlos Torres-Verdín, Junsheng Hou, Wardana Saputra, Michael Rabinovich, Frank Antonsen, Berit Ensted Danielsen, Vladimir Druskin, Jörn Zimmerling
Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023
Paper Number: SPWLA-2023-0070
https://doi.org/10.30632/SPWLA-2023-0070
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View Paper titled, 3D Electromagnetic Modeling and Quality Control of Ultradeep Borehole Azimuthal Resistivity Measurements
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Proceedings Papers

Limits of 3D Detectability and Resolution of LWD Deep-Sensing Borehole Electromagnetic Measurements Acquired in the Norwegian Continental Shelf

Nazanin Jahani, Carlos Torres-Verdín, Junsheng Hou, Jan Tveranger
Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023
Paper Number: SPWLA-2023-0048
https://doi.org/10.30632/SPWLA-2023-0048
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View Paper titled, Limits of 3D Detectability and Resolution of LWD Deep-Sensing Borehole Electromagnetic Measurements Acquired in the Norwegian Continental Shelf
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Proceedings Papers

Quantification of the Process of Mud-Filtrate Invasion in Heterogeneous Rocks by Combining X-Ray Computed Tomography and Numerical Simulations

Mohamad Abdo, Colin Schroeder, Pierre Aérens, Carlos Torres-Verdín
Paper presented at the SPWLA 64th Annual Logging Symposium, June 10–14, 2023
Paper Number: SPWLA-2023-0022
https://doi.org/10.30632/SPWLA-2023-0022
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View Paper titled, Quantification of the Process of Mud-Filtrate Invasion in Heterogeneous Rocks by Combining X-Ray Computed Tomography and Numerical Simulations
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Proceedings Papers

Assessment of True Formation Resistivity and Water Saturation in Deeply Invaded Tight-Gas Sandstones Based on the Combined Numerical Simulation of Mud-Filtrate Invasion and Resistivity Logs

German Merletti, Salim Al Hajri, Michael Rabinovich, Russell Farmer, Mohamed Bennis, Carlos Torres-Verdin
Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0030
https://doi.org/10.30632/SPWLA-2022-0030
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View Paper titled, Assessment of True Formation Resistivity and Water Saturation in Deeply Invaded Tight-Gas Sandstones Based on the Combined Numerical Simulation of Mud-Filtrate Invasion and Resistivity Logs
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Proceedings Papers

Laboratory Investigation and Numerical Simulation of Sp Suppression in Hydrocarbon-Bearing Rocks

Joshua Bautista-Anguiano, Carlos Torres-Verdín
Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0036
https://doi.org/10.30632/SPWLA-2022-0036
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View Paper titled, Laboratory Investigation and Numerical Simulation of Sp Suppression in Hydrocarbon-Bearing Rocks
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Proceedings Papers

Connectivity Assessment of Heavily Compartmentalized Reservoirs: A New Workflow Introducing Areal Downhole Fluid Analysis and Data Integration

Tarek S. Mohamed, Carlos Torres-Verdín, Oliver C. Mullins
Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0042
https://doi.org/10.30632/SPWLA-2022-0042
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View Paper titled, Connectivity Assessment of Heavily Compartmentalized Reservoirs: A New Workflow Introducing Areal Downhole Fluid Analysis and Data Integration
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Proceedings Papers

New Iterative Resistivity Modelling Workflow Reduces Uncertainty in the Assessment of Water Saturation in Deeply-Invaded Reservoirs

German Merletti, Michael Rabinovich, Salim Al Hajri, William Dawson, Russell Farmer, Joaquin Ambia, Carlos Torres-Verdín
Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0057
https://doi.org/10.30632/SPWLA-2022-0057
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View Paper titled, New Iterative Resistivity Modelling Workflow Reduces Uncertainty in the Assessment of Water Saturation in Deeply-Invaded Reservoirs
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Proceedings Papers

Ultrasonic Angle-Dependent Reflectivity in Complex Rocks for Improved Interpretation of Sonic and Ultrasonic Logs

Daria Olszowska, Gabriel Gallardo-Giozza, Carlos Torres-Verdín
Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0058
https://doi.org/10.30632/SPWLA-2021-0058
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View Paper titled, Ultrasonic Angle-Dependent Reflectivity in Complex Rocks for Improved Interpretation of Sonic and Ultrasonic Logs
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Proceedings Papers

Real-Time Ensemble-Based Well-Log Interpretation for Geosteering

Nazanin Jahani, Joaquín Ambía, Kristian Fossum, Sergey Alyaev, Erich Suter, Carlos Torres-Verdín
Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0105
https://doi.org/10.30632/SPWLA-2021-0105
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View Paper titled, Real-Time Ensemble-Based Well-Log Interpretation for Geosteering
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Proceedings Papers

Real-Time 2.5D Inversion of LWD Resistivity Measurements Using Deep Learning for Geosteering Applications Across Faulted Formations

Kyubo Noh, Carlos Torres-Verdín, David Pardo
Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0104
https://doi.org/10.30632/SPWLA-2021-0104
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View Paper titled, Real-Time 2.5D Inversion of LWD Resistivity Measurements Using Deep Learning for Geosteering Applications Across Faulted Formations
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Proceedings Papers

Fast Forward Modeling of Borehole Nuclear Magnetic Resonance Measurements in Vertical Wells

Mohammad Albusairi, Carlos Torres-Verdín
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-AAA
https://doi.org/10.30632/T60ALS-2019_AAA
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View Paper titled, Fast Forward Modeling of Borehole Nuclear Magnetic Resonance Measurements in Vertical Wells
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Proceedings Papers

Automatic Interpretation of Well Logs with Lithology-Specific Deep-Learning Methods

Aymeric-Pierre Peyret, Joaquín Ambía, Carlos Torres-Verdín, Joachim Strobel
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-SSSS
https://doi.org/10.30632/T60ALS-2019_SSSS
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View Paper titled, Automatic Interpretation of Well Logs with Lithology-Specific Deep-Learning Methods
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Proceedings Papers

Pore-Size-Dependent Fluid Substitution Method for Improved Estimation of NMR Porosity, Permeability, and Relaxation Times

David Medellin, Ali Eghbali, You Wang, Carlos Torres-Verdín
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-JJ
https://doi.org/10.30632/T60ALS-2019_JJ
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View Paper titled, Pore-Size-Dependent Fluid Substitution Method for Improved Estimation of NMR Porosity, Permeability, and Relaxation Times
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Proceedings Papers

Estimating Capillary Pressure from NMR Measurements Using a Pore-Size-Dependent Fluid Substitution Method

You Wang, David Medellin, Carlos Torres-Verdín
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-II
https://doi.org/10.30632/T60ALS-2019_II
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View Paper titled, Estimating Capillary Pressure from NMR Measurements Using a Pore-Size-Dependent Fluid Substitution Method
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Proceedings Papers

Multi-Frequency Interpretation of Electric Resistivity and Dielectric Permittivity Measurements for Simultaneous Assessment of Porosity, Water Saturation, and Wettability

Artur Posenato Garcia, Zoya Heidari, Carlos Torres-Verdin
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-III
https://doi.org/10.30632/T60ALS-2019_III
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View Paper titled, Multi-Frequency Interpretation of Electric Resistivity and Dielectric Permittivity Measurements for Simultaneous Assessment of Porosity, Water Saturation, and Wettability
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Proceedings Papers

Micro/Nanofluidic Insights on Fluid Deliverability Controls in Tight Rocks

Ayaz Mehmani, Shaina Kelly, Carlos Torres-Verdín
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-QQ
https://doi.org/10.30632/T60ALS-2019_QQ
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View Paper titled, Micro/Nanofluidic Insights on Fluid Deliverability Controls in Tight Rocks
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Proceedings Papers

Fast Bayesian Inversion Method for the Generalized Petrophysical and Compositional Interpretation of Multiple Well Logs with Uncertainty Quantification

Tianqi Deng, Joaquín Ambía, Carlos Torres-Verdín
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-FFFF
https://doi.org/10.30632/T60ALS-2019_FFFF
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View Paper titled, Fast Bayesian Inversion Method for the Generalized Petrophysical and Compositional Interpretation of Multiple Well Logs with Uncertainty Quantification
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