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Journal Articles

Fast and Efficient Mitigation of Coupled Axial-Torsional Drillstring Vibrations through State-Feedback Linear-Quadratic-Integral (LQI) Control

Yifan Zhang, Pradeepkumar Ashok, Juan Aguirre, Dongmei Chen, Eric van Oort
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (12): 6725–6742.
Paper Number: SPE-223618-PA
https://doi.org/10.2118/223618-PA
Published: 11 December 2024
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View article titled, Fast and Efficient Mitigation of Coupled Axial-Torsional Drillstring Vibrations through State-Feedback Linear-Quadratic-Integral (LQI) Control
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Journal Articles

Automatic Determination of Cuttings and Cavings Properties for Hole Cleaning and Wellbore Stability Assessment Using a Laser-Based Sensor

Abraham C. Montes, Santiago Callerio, Çinar Turhan, Asad Safarov, Pradeepkumar Ashok, Eric van Oort
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (10): 5238–5257.
Paper Number: SPE-217736-PA
https://doi.org/10.2118/217736-PA
Published: 09 October 2024
View article titled, Automatic Determination of Cuttings and Cavings Properties for Hole Cleaning and Wellbore Stability Assessment Using a Laser-Based Sensor
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Includes: Supplementary Content
Proceedings Papers

Review of Stuck Pipe Prediction Methods and Future Directions

Abraham C. Montes, Pradeepkumar Ashok, Eric van Oort
Paper presented at the SPE Annual Technical Conference and Exhibition, September 23–25, 2024
Paper Number: SPE-220725-MS
https://doi.org/10.2118/220725-MS
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View Paper titled, Review of Stuck Pipe Prediction Methods and Future Directions
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Journal Articles

Field Validation of a Universally Applicable Condition-Based Maintenance System for Mud Pumps

Dongyoung Yoon, Pradeepkumar Ashok, Eric van Oort, Pradeep Annaiyappa, Shungo Abe, Akira Ebitani
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 29 (07): 3423–3439.
Paper Number: SPE-212564-PA
https://doi.org/10.2118/212564-PA
Published: 10 July 2024
View article titled, Field Validation of a Universally Applicable Condition-Based Maintenance System for Mud Pumps
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Includes: Supplementary Content
Proceedings Papers

Real-Time Casing Point Selection Optimization for MPD Wells Through Improved Kick Tolerance Analysis

Santiago Callerio, Pradeepkumar Ashok, Eric van Oort
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217692-MS
https://doi.org/10.2118/217692-MS
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View Paper titled, Real-Time Casing Point Selection Optimization for MPD Wells Through Improved Kick Tolerance Analysis
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Proceedings Papers

Applications of Large Language Models in Well Construction Planning and Real-Time Operation

Michael Yi, Kamil Ceglinski, Pradeepkumar Ashok, Michael Behounek, Spencer White, Trey Peroyea, Taylor Thetford
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217700-MS
https://doi.org/10.2118/217700-MS
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View Paper titled, Applications of Large Language Models in Well Construction Planning and Real-Time Operation
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Proceedings Papers

Downhole Temperature Estimation in Geothermal Wells Using a Deep Learning Model Based on LSTM Neural Networks

Mohamed Shafik Khaled, Ningyu Wang, Pradeepkumar Ashok, Eric van Oort
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217749-MS
https://doi.org/10.2118/217749-MS
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View Paper titled, Downhole Temperature Estimation in Geothermal Wells Using a Deep Learning Model Based on LSTM Neural Networks
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Proceedings Papers

Prioritizing Wells for Repurposing or Permanent Abandonment Based on Generalized Well Integrity Risk Analysis

Danzhu Zheng, Cinar Turhan, Ningyu Wang, Pradeepkumar Ashok, Eric van Oort
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217738-MS
https://doi.org/10.2118/217738-MS
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View Paper titled, Prioritizing Wells for Repurposing or Permanent Abandonment Based on Generalized Well Integrity Risk Analysis
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Proceedings Papers

Comparing Drilling Anomaly Prediction by Purely Data-Driven and Hybrid Analysis Methods - Case Study of Utah FORGE Geothermal Wells

Abraham C. Montes, Pradeepkumar Ashok, Eric van Oort
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217737-MS
https://doi.org/10.2118/217737-MS
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View Paper titled, Comparing Drilling Anomaly Prediction by Purely Data-Driven and Hybrid Analysis Methods - Case Study of Utah FORGE Geothermal Wells
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Proceedings Papers

Drill Bit Forensics Using Videos Captured on Mobile Phones

Jian Chu, Pradeepkumar Ashok, Dongmei Chen, Eric van Oort
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217743-MS
https://doi.org/10.2118/217743-MS
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View Paper titled, Drill Bit Forensics Using Videos Captured on Mobile Phones
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Proceedings Papers

Automatic Determination of Cuttings and Cavings Properties for Hole Cleaning and Wellbore Stability Assessment Using a Laser-Based Sensor

Abraham C. Montes, Santiago Callerio, Çinar Turhan, Pradeepkumar Ashok, Eric Van Oort
Paper presented at the IADC/SPE International Drilling Conference and Exhibition, March 5–7, 2024
Paper Number: SPE-217736-MS
https://doi.org/10.2118/217736-MS
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View Paper titled, Automatic Determination of Cuttings and Cavings Properties for Hole Cleaning and Wellbore Stability Assessment Using a Laser-Based Sensor
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Proceedings Papers

Prevention of Stuck Pipe Events and Robust Real-Time Identification of Root Cause Using Physics Based Models in Combination with Bayesian Network Models

Michael Yi, Pradeepkumar Ashok, Michael Behounek, Spencer White, Trey Peroyea, Taylor Thetford, Gary Hickin, Julie Pearce
Paper presented at the International Petroleum Technology Conference, February 12, 2024
Paper Number: IPTC-24141-MS
https://doi.org/10.2523/IPTC-24141-MS
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View Paper titled, Prevention of Stuck Pipe Events and Robust Real-Time Identification of Root Cause Using Physics Based Models in Combination with Bayesian Network Models
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Proceedings Papers

Stuck Pipe Prediction in Utah FORGE Geothermal Wells

Abraham C. Montes, Pradeepkumar Ashok, Eric van Oort
Paper presented at the SPE Annual Technical Conference and Exhibition, October 16–18, 2023
Paper Number: SPE-214783-MS
https://doi.org/10.2118/214783-MS
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View Paper titled, Stuck Pipe Prediction in Utah FORGE Geothermal Wells
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Proceedings Papers

The Secrets to Successful Deployment of AI Drilling Advisory Systems at a Rig Site: A Case Study

Michael Behounek, Pradeepkumar Ashok
Paper presented at the SPE Annual Technical Conference and Exhibition, October 16–18, 2023
Paper Number: SPE-215132-MS
https://doi.org/10.2118/215132-MS
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View Paper titled, The Secrets to Successful Deployment of AI Drilling Advisory Systems at a Rig Site: A Case Study
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Journal Articles

Drilling Heat Maps for Active Temperature Management in Geothermal Wells

Mohamed Shafik Khaled, Dongmei Chen, Pradeepkumar Ashok, Eric van Oort
Journal: SPE Journal
Publisher: Society of Petroleum Engineers (SPE)
SPE J. 28 (04): 1577–1593.
Paper Number: SPE-210306-PA
https://doi.org/10.2118/210306-PA
Published: 09 August 2023
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Journal Articles

Strategies for Prevention of Downhole Tool Failure Caused by High Bottomhole Temperature in Geothermal and High-Pressure/High-Temperature Oil and Gas Wells

Mohamed Shafik Khaled, Ningyu Wang, Pradeepkumar Ashok, Dongmei Chen, Eric van Oort
Journal: SPE Drilling & Completion
Publisher: Society of Petroleum Engineers (SPE)
SPE Drill & Compl 38 (02): 243–260.
Paper Number: SPE-212550-PA
https://doi.org/10.2118/212550-PA
Published: 14 June 2023
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View article titled, Strategies for Prevention of Downhole Tool Failure Caused by High Bottomhole Temperature in Geothermal and High-Pressure/High-Temperature Oil and Gas Wells
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Proceedings Papers

A Control-Oriented Lumped Parameter Drillstring Dynamic Model for Real-Time Vibration Mitigation and Drilling Optimization

Yifan Zhang, Pradeepkumar Ashok, Dongmei Chen, Eric van Oort
Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 7–9, 2023
Paper Number: SPE-212453-MS
https://doi.org/10.2118/212453-MS
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View Paper titled, A Control-Oriented Lumped Parameter Drillstring Dynamic Model for Real-Time Vibration Mitigation and Drilling Optimization
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Proceedings Papers

Automatic Drill Bit Dull Grading Report Generation to Address the Revised IADC Dull Grading Schema

Jian Chu, Pradeepkumar Ashok, Dongmei Chen, Eric van Oort
Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 7–9, 2023
Paper Number: SPE-212458-MS
https://doi.org/10.2118/212458-MS
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View Paper titled, Automatic Drill Bit Dull Grading Report Generation to Address the Revised IADC Dull Grading Schema
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Proceedings Papers

Field Testing of an Automated 3D Cuttings and Cavings Measurement Sensor

Sebastian Prez, Santiago Callerio, Abraham Montes, Çinar Turhan, Pradeepkumar Ashok, Eric van Oort, Roger Pruitt, Taylor Thetford, Trey Peroyea, Michael Behounek
Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 7–9, 2023
Paper Number: SPE-212569-MS
https://doi.org/10.2118/212569-MS
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View Paper titled, Field Testing of an Automated 3D Cuttings and Cavings Measurement Sensor
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Proceedings Papers

Field Validation of Scalable Condition-Based Maintenance (CBM) of Mud Pumps

Dongyoung Yoon, Pradeepkumar Ashok, Eric van Oort, Pradeep Annaiyappa, Shungo Abe
Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 7–9, 2023
Paper Number: SPE-212564-MS
https://doi.org/10.2118/212564-MS
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View Paper titled, Field Validation of Scalable Condition-Based Maintenance (CBM) of Mud Pumps
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