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Yngve Bolstad Johansen
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Proceedings Papers

Enhancing Lithological Evaluation in Complex Triassic Reservoirs: A Comparative Analysis of LWD Spectroscopy and Standard Cuttings Examination

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Rubi Rodriguez, Mathias Horstmann, Yngve Bolstad Johansen, Egil Romsås Fjeldberg, Francoise Allioli, Karim Bondabou, Andrea Di Daniel, Vikas Jain, Vivek Agarwal
Paper presented at the SPWLA 65th Annual Logging Symposium, May 18–22, 2024
Paper Number: SPWLA-2024-0141
https://doi.org/10.30632/SPWLA-2024-0141
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View Paper titled, Enhancing Lithological Evaluation in Complex Triassic Reservoirs: A Comparative Analysis of LWD Spectroscopy and Standard Cuttings Examination
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Proceedings Papers

Successful Geostopping Using a Recently Developed LWD Look-Ahead Ultra-Deep EM Resistivity Tool

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Jin Ma, Karol Riofrio, Nigel Clegg, Supriya Sinha, Hsu-Hsiang Wu, Artur Kotwicki, Torstein Skorve, Yngve Bolstad Johansen
Paper presented at the ADIPEC, October 31–November 3, 2022
Paper Number: SPE-211613-MS
https://doi.org/10.2118/211613-MS
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View Paper titled, Successful Geostopping Using a Recently Developed LWD Look-Ahead Ultra-Deep EM Resistivity Tool
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Proceedings Papers

Context and Distribution Matrixes – One Path to Consistent and Efficient Handling of Uncertainty in Formation Evaluation

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Kjetil Westeng, Yngve Bolstad Johansen
Paper presented at the SPWLA 63rd Annual Logging Symposium, June 11–15, 2022
Paper Number: SPWLA-2022-0003
https://doi.org/10.30632/SPWLA-2022-0003
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View Paper titled, Context and Distribution Matrixes – One Path to Consistent and Efficient Handling of Uncertainty in Formation Evaluation
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Journal Articles

Automated Log Data Analytics Workflow – The Value of Data Access and Management to Reduced Turnaround Time for Log Analysis

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Veronica Alejandra Torres Caceres, Kenneth Duffaut, Frank Ove Westad, Alexey Stovas, Yngve Bolstad Johansen, Arne Jenssen
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 63 (01): 35–60.
Paper Number: SPWLA-2022-v63n1a3
https://doi.org/10.30632/PJV63N1-2022a3
Published: 01 February 2022
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View articletitled, Automated Log Data Analytics Workflow – The Value of Data Access and Management to Reduced Turnaround Time for Log Analysis
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Journal Articles

Evaluating Petrophysical Properties and Volumetrics Uncertainties of Sand Injectite Reservoirs – Norwegian North Sea

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Artur Kotwicki, Mirza Hassan Baig, Yngve Bolstad Johansen, Guro Leirdal, Brage Vikaune Aftret, Odd Arne Sandstad, Anne Mette Anthonsen, Bruis Gianotten, Tor Arne Hansen, Mauro Firinu
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 63 (01): 82–103.
Paper Number: SPWLA-2022-v63n1a5
https://doi.org/10.30632/PJV63N1-2022a5
Published: 01 February 2022
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View articletitled, Evaluating Petrophysical Properties and Volumetrics Uncertainties of Sand Injectite Reservoirs – Norwegian North Sea
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Journal Articles

Automated Well-Log Depth Matching – 1D Convolutional Neural Networks Vs. Classic Cross Correlation

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Veronica Alejandra Torres Caceres, Kenneth Duffaut, Anis Yazidi, Frank O. Westad, Yngve Bolstad Johansen
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 63 (01): 12–34.
Paper Number: SPWLA-2022-v63n1a2
https://doi.org/10.30632/PJV63N1-2022a2
Published: 01 February 2022
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View articletitled, Automated Well-Log Depth Matching – 1D Convolutional Neural Networks Vs. Classic Cross Correlation
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Proceedings Papers

X-Ray Diffraction, X-Ray Fluorescence, and Neutron Induced Spectroscopy Based Correction to Ivar Aasen Geomodel: An Oilfield from the Norwegian North Sea

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Egil Romsås Fjeldberg, Yngve Bolstad Johansen, Lodve Hugo Olsborg, Geir Frode Kvilaas, Tor-Ole Jøssund, Harish Datir
Paper presented at the SPWLA 62nd Annual Logging Symposium, May 17–20, 2021
Paper Number: SPWLA-2021-0042
https://doi.org/10.30632/SPWLA-2021-0042
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View Paper titled, X-Ray Diffraction, X-Ray Fluorescence, and Neutron Induced Spectroscopy Based Correction to Ivar Aasen Geomodel: An Oilfield from the Norwegian North Sea
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Journal Articles

An Integrated Petrophysical Workflow for Fluid Characterization and Contacts Identification Using NMR Continuous and Stationary Measurements in a High-Porosity Sandstone Formation, Offshore Norway

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Maciej Kozlowski, Diptaroop Chakraborty, Venkat Jambunathan, Peyton Lowrey, Ron Balliet, Bob Engelman, Katrine Ropstad Ånensen, Artur Kotwicki, Yngve Bolstad Johansen
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 62 (02): 210–226.
Paper Number: SPWLA-2021-v62n2a5
https://doi.org/10.30632/PJV62N2-2021a5
Published: 01 April 2021
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View articletitled, An Integrated Petrophysical Workflow for Fluid Characterization and Contacts Identification Using NMR Continuous and Stationary Measurements in a High-Porosity Sandstone Formation, Offshore Norway
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Journal Articles

Analysis of Lateral Fluid Gradients From DFA Measurements and Simulation of Reservoir Fluid Mixing Processes Over Geologic Time

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Qing Chen, Morten Kristensen, Yngve Bolstad Johansen, Vladislav Achourov, Soraya S. Betancourt, Oliver C. Mullins
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 62 (01): 16–30.
Paper Number: SPWLA-2021-v62n1a1
https://doi.org/10.30632/PJV62N1-2021a1
Published: 01 February 2021
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View articletitled, Analysis of Lateral Fluid Gradients From DFA Measurements and Simulation of Reservoir Fluid Mixing Processes Over Geologic Time
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Journal Articles

Dual Neural Network Architecture for Determining Permeability and Associated Uncertainty

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Ravinath Kausik, Augustin Prado, Vasileios-Marios Gkortsas, Lalitha Venkataramanan, Harish Datir, Yngve Bolstad Johansen
Journal: Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description
Publisher: Society of Petrophysicists and Well-Log Analysts
Petrophysics 62 (01): 122–134.
Paper Number: SPWLA-2021-v62n1a8
https://doi.org/10.30632/PJV62N1-2021a8
Published: 01 February 2021
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View articletitled, Dual Neural Network Architecture for Determining Permeability and Associated Uncertainty
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Proceedings Papers

Reservoir Implications of Measured Thermodynamic Equilibrium of Crude Oil Components: Gases, Liquids, the Solid Asphaltenes, and Biomarkers

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Oliver C. Mullins, Yngve Bolstad Johansen, Vladislav Achourov, Qing Chen, Jesus Albert Cañas, Li Chen, Andrew E. Pomerantz, Julia C. Forsythe, Soraya S. Betancourt, Bita Bayestehparvin
Paper presented at the SPE Annual Technical Conference and Exhibition, October 26–29, 2020
Paper Number: SPE-201711-MS
https://doi.org/10.2118/201711-MS
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View Paper titled, Reservoir Implications of Measured Thermodynamic Equilibrium of Crude Oil Components: Gases, Liquids, the Solid Asphaltenes, and Biomarkers
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Proceedings Papers

Automation of depth matching using a structured well-log database: Prototype well example in the North Sea

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Veronica Torres, Kenneth Duffaut, Alexey Stovas, Frank O. Westad, Yngve Bolstad Johansen
Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3424928
https://doi.org/10.1190/segam2020-3424928.1
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View Paper titled, Automation of depth matching using a structured well-log database: Prototype well example in the North Sea
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Proceedings Papers

Automatic Facies Classification from Well Logs

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Vasileios-Marios Gkortsas, Lin Liang, Yngve Bolstad Johansen, Lalitha Venkataramanan, Harish Datir
Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5075
https://doi.org/10.30632/SPWLA-5075
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View Paper titled, Automatic Facies Classification from Well Logs
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Proceedings Papers

Analysis of Lateral Fluid Gradients From DFA Measurements and Simulation of Reservoir Fluid Mixing Processes Over Geologic Time

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Qing Chen, Morten Kristensen, Yngve Bolstad Johansen, Vladislav Achourov, Soraya S. Betancourt, Oliver C. Mullins
Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5031
https://doi.org/10.30632/SPWLA-5031
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View Paper titled, Analysis of Lateral Fluid Gradients From DFA Measurements and Simulation of Reservoir Fluid Mixing Processes Over Geologic Time
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Proceedings Papers

An Integrated Petrophysical Workflow for Fluid Characterization and Contacts Identification Using NMR Continuous and Stationary Measurements in High-Porosity Sandstone Formation, Offshore Norway

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Maciej Kozlowski, Diptaroop Chakraborty, Venkat Jambunathan, Peyton Lowrey, Ron Balliet, Bob Engelman, Katrine Ropstad Ånensen, Artur Kotwicki, Yngve Bolstad Johansen
Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5023
https://doi.org/10.30632/SPWLA-5023
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View Paper titled, An Integrated Petrophysical Workflow for Fluid Characterization and Contacts Identification Using NMR Continuous and Stationary Measurements in High-Porosity Sandstone Formation, Offshore Norway
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Proceedings Papers

Dual Neural Network Architecture for Determining Permeability and Associated Uncertainty

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Ravinath Kausik, Augustin Prado, Vasileios-Marios Gkortsas, Lalitha Venkataramanan, Harish Datir, Yngve Bolstad Johansen
Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5073
https://doi.org/10.30632/SPWLA-5073
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View Paper titled, Dual Neural Network Architecture for Determining Permeability and Associated Uncertainty
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Proceedings Papers

Evaluating Petrophysical Properties and Volumetrics Uncertainties of Sand Injectite Reservoirs – Norwegian North Sea

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Artur Kotwicki, Mirza Hassan Baig, Yngve Bolstad Johansen, Guro Leirdal, Brage Vikaune Aftret, Odd Arne Sandstad, Anne Mette Anthonsen, Bruis Gianotten, Tor Arne Hansen, Mauro Firinu
Paper presented at the SPWLA 61st Annual Logging Symposium, June 24–July 29, 2020
Paper Number: SPWLA-5057
https://doi.org/10.30632/SPWLA-5057
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View Paper titled, Evaluating Petrophysical Properties and Volumetrics Uncertainties of Sand Injectite Reservoirs – Norwegian North Sea
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Proceedings Papers

Downhole Neutron-Induced Spectroscopy Element and Mineral Estimates Compared to a Ring-Tested Core Reference

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Yngve Bolstad Johansen, Olav-Magnar Nes, Harish Datir, Paul R. Craddock, Lalitha Venkataramanan
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-OOOO
https://doi.org/10.30632/T60ALS-2019_OOOO
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View Paper titled, Downhole Neutron-Induced Spectroscopy Element and Mineral Estimates Compared to a Ring-Tested Core Reference
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Proceedings Papers

Diverse Fluid Gradients Associated with Biodegradation of Crude Oil

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Oliver C. Mullins, Yngve Bolstad Johansen, Joachim Rinna, John Meyer, Steve Kenyon-Roberts, Li Chen, Julia C. Forsythe, Vladislav Achourov, Richard Jackson, Soraya S. Betancourt, Julian Y. Zuo, Jesus A. Canas
Paper presented at the SPWLA 60th Annual Logging Symposium, June 15–19, 2019
Paper Number: SPWLA-2019-XX
https://doi.org/10.30632/T60ALS-2019_XX
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View Paper titled, Diverse Fluid Gradients Associated with Biodegradation of Crude Oil
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Proceedings Papers

Asphaltene Gradient Analysis by DFA Coupled with Geochemical Analysis by GC and GCxGC Indicate Connectivity in Agreement with One Year of Production in a Norwegian Oilfield

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Yngve Bolstad Johansen, Joachim Rinna, Soraya S. Betancourt, Julia C. Forsythe, Vladislav Achourov, Jesus A. Canas, Li Chen, Julian Y. Zuo, Oliver C. Mullins
Paper presented at the SPE Annual Technical Conference and Exhibition, September 24–26, 2018
Paper Number: SPE-191490-MS
https://doi.org/10.2118/191490-MS
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View Paper titled, Asphaltene Gradient Analysis by DFA Coupled with Geochemical Analysis by GC and GCxGC Indicate Connectivity in Agreement with One Year of Production in a Norwegian Oilfield
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