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Journal Articles

A Fast History-Matching and Optimization Tool and Its Application to a Full Field with More than 1,000 Wells

Guotong Ren, Zhenzhen Wang, Yuanbo Lin, Tsubasa Onishi, Xiaoyue Guan, Xian-Huan Wen
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (10): 5538–5558.
Paper Number: SPE-212188-PA
https://doi.org/10.2118/212188-PA
Published: 09 October 2024
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View article titled, A Fast History-Matching and Optimization Tool and Its Application to a Full Field with More than 1,000 Wells
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Journal Articles

Physics Informed Machine Learning for Reservoir Connectivity Identification and Robust Production Forecasting

Masahiro Nagao, Akhil Datta-Gupta, Tsubasa Onishi, Sathish Sankaran
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (09): 4527–4541.
Paper Number: SPE-219773-PA
https://doi.org/10.2118/219773-PA
Published: 11 September 2024
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View article titled, Physics Informed Machine Learning for Reservoir Connectivity Identification and Robust Production Forecasting
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Journal Articles

An Efficient Deep Learning-Based Workflow for CO 2 Plume Imaging With Distributed Pressure and Temperature Measurements

Masahiro Nagao, Changqing Yao, Tsubasa Onishi, Hongquan Chen, Akhil Datta-Gupta
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 28 (06): 3224–3238.
Paper Number: SPE-210309-PA
https://doi.org/10.2118/210309-PA
Published: 13 December 2023
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View article titled, An Efficient Deep Learning-Based Workflow for CO 2 Plume Imaging With Distributed Pressure and Temperature Measurements
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Proceedings Papers

Reservoir Connectivity Identification and Robust Production Forecasting Using Physics Informed Machine Learning

Masahiro Nagao, Akhil Datta-Gupta, Tsubasa Onishi, Sathish Sankaran
Paper presented at the SPE Reservoir Simulation Conference, March 28–30, 2023
Paper Number: SPE-212201-MS
https://doi.org/10.2118/212201-MS
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View Paper titled, Reservoir Connectivity Identification and Robust Production Forecasting Using Physics Informed Machine Learning
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Proceedings Papers

A Fast History Matching and Optimization Tool and its Application to a Full Field with More than 1,000 Wells

Guotong Ren, Zhenzhen Wang, Yuanbo Lin, Tsubasa Onishi, Xiaoyue Guan, Xian-Huan Wen
Paper presented at the SPE Reservoir Simulation Conference, March 28–30, 2023
Paper Number: SPE-212188-MS
https://doi.org/10.2118/212188-MS
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View Paper titled, A Fast History Matching and Optimization Tool and its Application to a Full Field with More than 1,000 Wells
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Proceedings Papers

An Efficient Deep Learning-Based Workflow for CO 2 Plume Imaging Using Distributed Pressure and Temperature Measurements

Masahiro Nagao, Changqing Yao, Tsubasa Onishi, Hongquan Chen, Akhil Datta-Gupta
Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–5, 2022
Paper Number: SPE-210309-MS
https://doi.org/10.2118/210309-MS
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View Paper titled, An Efficient Deep Learning-Based Workflow for CO 2 Plume Imaging Using Distributed Pressure and Temperature Measurements
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Journal Articles

A Physics-Based Proxy for Surface and Subsurface Coupled Simulation Models

Changdong Yang, Jincong He, Tsubasa Onishi, Song Du, Zhenzhen Wang, Xiaoyue Guan, Jianping Chen, Xian-huan Wen
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 27 (04): 1962–1972.
Paper Number: SPE-204004-PA
https://doi.org/10.2118/204004-PA
Published: 11 August 2022
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View article titled, A Physics-Based Proxy for Surface and Subsurface Coupled Simulation Models
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Journal Articles

Streamline Tracing and Applications in Dual-Porosity Dual-Permeability Models

Tsubasa Onishi, Shusei Tanaka, Hongquan Chen, Dongjae Kam, Jiang Xie, Zhiming Wang, Xian-huan Wen, Akhil Datta-Gupta
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 27 (04): 1943–1961.
Paper Number: SPE-203993-PA
https://doi.org/10.2118/203993-PA
Published: 11 August 2022
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View article titled, Streamline Tracing and Applications in Dual-Porosity Dual-Permeability Models
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Proceedings Papers

A Physics-Based Proxy for Surface and Subsurface Coupled Simulation Models

Changdong Yang, Jincong He, Song Du, Zhenzhen Wang, Tsubasa Onishi, Xiaoyue Guan, Jianping Chen, Xian- Huan Wen
Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-204004-MS
https://doi.org/10.2118/204004-MS
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View Paper titled, A Physics-Based Proxy for Surface and Subsurface Coupled Simulation Models
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Proceedings Papers

Streamline Tracing and Applications in Dual Porosity Dual Permeability Models

Tsubasa Onishi, Hongquan Chen, Jiang Xie, Shusei Tanaka, Dongjae Kam, Zhiming Wang, Xian-Huan Wen, Akhil Datta-Gupta
Paper presented at the SPE Reservoir Simulation Conference, October 26, 2021
Paper Number: SPE-203993-MS
https://doi.org/10.2118/203993-MS
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View Paper titled, Streamline Tracing and Applications in Dual Porosity Dual Permeability Models
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Proceedings Papers

Robust CO 2 Plume Imaging Using Joint Tomographic Inversion of Distributed Pressure and Temperature Measurements

Changqing Yao, Hongquan Chen, Tsubasa Onishi, Akhil Datta-Gupta, Sanjay Mawalkar, Srikanta Mishra, Ashwin Pasumarti
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206249-MS
https://doi.org/10.2118/206249-MS
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View Paper titled, Robust CO 2 Plume Imaging Using Joint Tomographic Inversion of Distributed Pressure and Temperature Measurements
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Proceedings Papers

An Efficient Deep Learning-Based Workflow Incorporating a Reduced Physics Model for Subsurface Imaging in Unconventional Reservoirs

Tsubasa Onishi, Hongquan Chen, Akhil Datta-Gupta, Srikanta Mishra
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206065-MS
https://doi.org/10.2118/206065-MS
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View Paper titled, An Efficient Deep Learning-Based Workflow Incorporating a Reduced Physics Model for Subsurface Imaging in Unconventional Reservoirs
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Journal Articles

Computing Pressure Front Propagation Using the Diffusive-Time-of-Flight in Structured and Unstructured Grid Systems via the Fast-Marching Method

Hongquan Chen, Tsubasa Onishi, Jaeyoung Park, Akhil Datta-Gupta
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 26 (03): 1366–1386.
Paper Number: SPE-201771-PA
https://doi.org/10.2118/201771-PA
Published: 16 June 2021
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View article titled, Computing Pressure Front Propagation Using the Diffusive-Time-of-Flight in Structured and Unstructured Grid Systems via the Fast-Marching Method
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Proceedings Papers

Rapid Simulation Accounting For Well Interference in Unconventional Reservoirs Using Fast Marching Method

Atsushi Iino, Hye Young Jung, Tsubasa Onishi, Akhil Datta-Gupta
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, July 20–22, 2020
Paper Number: URTEC-2020-2468-MS
https://doi.org/10.15530/urtec-2020-2468
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View Paper titled, Rapid Simulation Accounting For Well Interference in Unconventional Reservoirs Using Fast Marching Method
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Journal Articles

Optimizing CO 2 - and Field-Gas-Injection EOR in Unconventional Reservoirs Using the Fast-Marching Method

Atsushi Iino, Tsubasa Onishi, Akhil Datta-Gupta
Journal: SPE Reservoir Evaluation & Engineering
Publisher: Society of Petroleum Engineers (SPE)
SPE Res Eval & Eng 23 (01): 261–281.
Paper Number: SPE-190304-PA
https://doi.org/10.2118/190304-PA
Published: 17 February 2020
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View article titled, Optimizing CO 2 - and Field-Gas-Injection EOR in Unconventional Reservoirs Using the Fast-Marching Method
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Proceedings Papers

Application of Combined Streamline Based Reduced-Physics Surrogate and Response Surface Method for Field Development Optimization

Shusei Tanaka, Tsubasa Onishi, Dongjae Kam, Kaveh Dehghani, Xian-Huan Wen
Paper presented at the International Petroleum Technology Conference, January 13–15, 2020
Paper Number: IPTC-19958-MS
https://doi.org/10.2523/IPTC-19958-MS
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View Paper titled, Application of Combined Streamline Based Reduced-Physics Surrogate and Response Surface Method for Field Development Optimization
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Proceedings Papers

Fast Marching Method Based Rapid Simulation Accounting for Gravity

Tsubasa Onishi, Atsushi Iino, Hye Young Jung, Akhil Datta-Gupta
Paper presented at the SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, November 18–19, 2019
Paper Number: URTEC-198249-MS
https://doi.org/10.15530/AP-URTEC-2019-198249
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Journal Articles

Modeling Hydraulically Fractured Shale Wells Using the Fast-Marching Method With Local Grid Refinements and an Embedded Discrete Fracture Model

Xu Xue, Changdong Yang, Tsubasa Onishi, Michael J. King, Akhil Datta–Gupta
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 24 (06): 2590–2608.
Paper Number: SPE-193822-PA
https://doi.org/10.2118/193822-PA
Published: 29 July 2019
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View article titled, Modeling Hydraulically Fractured Shale Wells Using the Fast-Marching Method With Local Grid Refinements and an Embedded Discrete Fracture Model
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Proceedings Papers

Modeling Hydraulically Fractured Shale Wells Using the Fast Marching Method with Local Grid Refinements LGRs and Embedded Discrete Fracture Model EDFM

Xu Xue, Changdong Yang, Tsubasa Onishi, Michael J. King, Akhil Datta-Gupta
Paper presented at the SPE Reservoir Simulation Conference, April 10–11, 2019
Paper Number: SPE-193822-MS
https://doi.org/10.2118/193822-MS
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View Paper titled, Modeling Hydraulically Fractured Shale Wells Using the Fast Marching Method with Local Grid Refinements LGRs and Embedded Discrete Fracture Model EDFM
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Journal Articles

Post-Combustion Carbon Dioxide Enhanced-Oil-Recovery Development in a Mature Oil Field: Model Calibration Using a Hierarchical Approach

Feyi Olalotiti-Lawal, Tsubasa Onishi, Hyunmin Kim, Akhil Datta-Gupta, Yusuke Fujita, Kenji Hagiwara
Journal: SPE Reservoir Evaluation & Engineering
Publisher: Society of Petroleum Engineers (SPE)
SPE Res Eval & Eng 22 (03): 998–1014.
Paper Number: SPE-187116-PA
https://doi.org/10.2118/187116-PA
Published: 08 January 2019
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View article titled, Post-Combustion Carbon Dioxide Enhanced-Oil-Recovery Development in a Mature Oil Field: Model Calibration Using a Hierarchical Approach
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