Constructing deep closed-loop geothermal wells for globally scalable energy production by leveraging oil and gas ERD and HPHT well construction expertise E van Oort, D Chen, P Ashok, A Fallah SPE/IADC Drilling Conference and Exhibition, D021S002R001, 2021 | 40 | 2021 |
Globally scalable geothermal energy production through managed pressure operation control of deep closed-loop well systems AH Fallah, Q Gu, D Chen, P Ashok, E van Oort, M Holmes Energy Conversion and Management 236, 114056, 2021 | 38 | 2021 |
Enhanced kick detection with low-cost rig sensors through automated pattern recognition and real-time sensor calibration P Pournazari, P Ashok, E van Oort, S Unrau, S Lai SPE Middle East Intelligent Oil and Gas Symposium, D021S006R001, 2015 | 38 | 2015 |
Multi-phase well control analysis during managed pressure drilling operations Z Ma, AK Vajargah, A Ambrus, P Ashok, D Chen, E Van Oort, R May, ... SPE Annual Technical Conference and Exhibition?, D031S050R001, 2016 | 35 | 2016 |
Quantifying PDC Bit Wear in Real-Time and Establishing an Effective Bit Pull Criterion Using Surface Sensors Y Witt-Doerring, PP Pastusek, P Ashok, E Oort SPE Annual Technical Conference and Exhibition, 2021 | 30 | 2021 |
A visualization framework for real time decision making in a multi-input multi-output system P Ashok, D Tesar IEEE Systems Journal 2 (1), 129-145, 2008 | 30 | 2008 |
Distinguishing between sensor and process faults in a sensor network with minimal false alarms using a bayesian network based methodology P Ashok, G Krishnamoorthy, D Tesar US Patent App. 13/402,084, 2012 | 29 | 2012 |
Accelerating well construction using a digital twin demonstrated on unconventional well data in North America G Saini, P Ashok, E van Oort, MR Isbell Unconventional Resources Technology Conference, Houston, Texas, 23-25 July …, 2018 | 27 | 2018 |
Guidelines for managing sensors in cyber physical systems with multiple sensors P Ashok, G Krishnamoorthy, D Tesar Journal of Sensors 2011, 2011 | 27 | 2011 |
Drilling rig sensor data validation in the presence of real-time process variations A Ambrus, P Ashok, E van Oort SPE Annual Technical Conference and Exhibition?, D021S012R001, 2013 | 26 | 2013 |
Drilling rig sensor data validation in the presence of real-time process variations A Ambrus, P Ashok, E van Oort SPE Annual Technical Conference and Exhibition?, D021S012R001, 2013 | 26 | 2013 |
Predictive action planning for hole cleaning optimization and stuck pipe prevention using digital twinning and reinforcement learning GS Saini, P Ashok, E van Oort IADC/SPE International Drilling Conference and Exhibition, 2020 | 23 | 2020 |
Temperature dynamics and its effects on gas influx handling during managed pressure drilling operations AH Fallah, Q Gu, Z Ma, AK Vajargah, D Chen, P Ashok, E van Oort, R May Journal of Natural Gas Science and Engineering 83, 103614, 2020 | 22 | 2020 |
A switching MPD controller for mitigating riser gas unloading events in offshore drilling Q Gu, AH Fallah, A Ambrus, Z Ma, D Chen, P Ashok, E van Oort SPE Drilling & Completion 35 (02), 201-217, 2020 | 22* | 2020 |
An integrated thermal and multi-phase flow model for estimating transient temperature dynamics during drilling operations AH Fallah, Q Gu, Z Ma, A Karimi Vajargah, D Chen, P Ashok, E van Oort, ... SPE/IADC Drilling Conference and Exhibition, D031S013R001, 2019 | 21 | 2019 |
Automatic Sensor Data Validation: Improving the Quality and Reliability of Rig Data EO Pradeepkumar Ashok, Adrian Ambrus 2013 SPE Digital Energy Conference and Exhibition, 2013 | 21 | 2013 |
A Novel Probabilistic Rig Based Drilling Optimization Index to Improve Drilling Performance A Ambrus, P Ashok, A Chintapalli, D Ramos, M Behounek, TS Thetford, ... SPE Offshore Europe Conference and Exhibition, D011S001R002, 2017 | 20 | 2017 |
Improved wellbore quality using a novel real-time tortuosity index Y Zhou, D Zheng, P Ashok, E Oort SPE/IADC Drilling Conference and Exhibition, D031S021R002, 2016 | 20 | 2016 |
Simultaneous sensor and process fault detection and isolation in multiple-input–multiple-output systems G Krishnamoorthy, P Ashok, D Tesar IEEE Systems Journal 9 (2), 335-349, 2015 | 20 | 2015 |
The need for a performance map based decision process P Ashok, D Tesar IEEE Systems Journal 7 (4), 616-631, 2012 | 19 | 2012 |