Gerhard Thonhauser

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Research output

  1. 2025
  2. Published

    Detecting downhole drilling events EP 4 189 206 B1

    Elmgerbi, A. (Inventor) & Thonhauser, G. (Inventor), 2025, Patent No. EP 4 189 206 B1

    Research output: Patent

  3. 2024
  4. Published

    Smart predictions of petrophysical formation pore pressure via robust data-driven intelligent models

    Krishna, S., Irfan, S. A., Keshavarz, S., Thonhauser, G. & Umer Ilyas, S., 24 Jul 2024, In: Multiscale and multidisciplinary modeling, experiments and design. 7.2024, 6, p. 5611-5630 20 p.

    Research output: Contribution to journal › Article › Research › peer-review

  5. E-pub ahead of print

    Evaluating Multi-target Regression Framework for Dynamic Condition Prediction in Wellbore

    Keshavarz, S., Elmgerbi, A., Vita, P. & Thonhauser, G., 23 Apr 2024, (E-pub ahead of print) In: The Arabian journal for science and engineering. 49.2024, June, p. 8953-8982 30 p.

    Research output: Contribution to journal › Article › Research › peer-review

  6. Published

    Deep reinforcement learning algorithm for wellbore cleaning across drilling operation

    Keshavarz, S., Elmgerbi, A. & Thonhauser, G., 25 Mar 2024, Fourth EAGE Digitalization Conference & Exhibition, Mar 2024, Volume 2024, p.1 - 5. Vol. 2024.

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  7. 2023
  8. Published

    Cellulose nanocrystals (CNCs) as a potential additive for improving API class G cement performance: An experimental study

    Elmgerbi, A., Abou Askar, I., Fine, A., Thonhauser, G. & Ashena, R., Jun 2023, In: Natural Gas Industry. B. 10.2023, 3, p. 233-244 12 p.

    Research output: Contribution to journal › Article › Research › peer-review

  9. Published

    A Reinforcement Learning Approach for Real-Time Autonomous Decision-Making in Well Construction

    Keshavarz, S., Vita, P., Rückert, E., Ortner, R. & Thonhauser, G., 19 Jan 2023, SPE AI Symposium 2023: Leveraging Artificial Intelligence to Shape the Future of the Energy Industry. (Society of Petroleum Engineers - SPE Symposium: Leveraging Artificial Intelligence to Shape the Future of the Energy Industry, AIS 2023).

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  10. 2022
  11. E-pub ahead of print

    Ultrasound velocity profiling technique for in-line rheological measurements: A prospective review

    Krishna, S., Thonhauser, G., Kumar, S., Elmgerbi, A. & Ravi, K., 2 Nov 2022, (E-pub ahead of print) In: Measurement. 205.2022, December, 19 p., 112152.

    Research output: Contribution to journal › Article › Research › peer-review

  12. E-pub ahead of print

    Holistic autonomous model for early detection of downhole drilling problems in real-time

    Elmgerbi, A. & Thonhauser, G., 20 Jun 2022, (E-pub ahead of print) In: Process safety and environmental protection. 164.2022, August, p. 418-434 17 p.

    Research output: Contribution to journal › Article › Research › peer-review

  13. Published

    Machine Learning Techniques Application for Real-Time Drilling Hydraulic Optimization

    Elmgerbi, A., Thonhauser, G., Nascimento, A. & Chuykov, E., 21 Feb 2022.

    Research output: Contribution to conference › Paper

  14. Published

    DETECTING DOWNHOLE DRILLING EVENTS

    Elmgerbi, A. (Inventor) & Thonhauser, G. (Inventor), 3 Feb 2022, IPC No. E21B 47/ 06 A I, Patent No. WO2022022812, Priority date 28 Jul 2020, Priority No. WO2020EP71284

    Research output: Patent

  15. 2021
  16. Published

    Implementing the autonomous adaptive algorithm to manage ESP operation in harsh reservoir conditions

    Antonic, M., Solesa, M., Thonhauser, G., Aleksic, M. & Zolotukhin, A., 25 Nov 2021.

    Research output: Contribution to conference › Paper › peer-review

  17. Published

    Experimental approach for assessing filter-cake removability derived from reservoir drill-in fluids

    Elmgerbi, A., Thonhauser, G., Fine, A., Borovina, A. & Hincapie , R., 8 Sept 2021.

    Research output: Contribution to conference › Paper › peer-review

  18. Published

    Evaluation of Cement-Casing & Cement-Rock Bond Integrity during Well Operations.

    Lamik, A., Thonhauser, G., Ravi, K., Prohaska-Marchried, M., Pittino, G. & Antretter, T., 27 May 2021, p. 1-13. 13 p.

    Research output: Contribution to conference › Paper › peer-review

  19. Published

    Application of Machine Learning Techniques for Real-Time Rate of Penetration Optimization

    Elmgerbi, A., Thonhauser, G. (Co-editor), Ettinger, C. (Co-editor), Tekum, P. (Co-editor) & Nascimento, A., 26 May 2021.

    Research output: Contribution to conference › Paper › peer-review

  20. 2019
  21. Published

    Conception of a Web Operation System for Processing Petroleum Related Drilling Data: A Focus on Pre-Salt Real-Time Automation and Optimization

    Elmgerbi, A., Thonhauser, G., Nascimento, A., Pinheiro, Y. S., Vieira, L. C., Souza dos Santos, F. D. A., Mathias, M. H. & Hunt, J., 10 Apr 2019.

    Research output: Contribution to conference › Paper › peer-review

  22. Published

    The complexity of drilling digitalization, a display of potential pitfalls during implementation

    Lettner, A. & Thonhauser, G., Apr 2019.

    Research output: Contribution to conference › Paper

  23. Published

    Innovatives Trainingskonzept mittels Echtzeit-simulation des Bohrprozesses

    Lettner, A., Thonhauser, G. & Kucs, R., Feb 2019, In: Erdöl, Erdgas, Kohle. 135.2019, 2, p. 76-81 6 p.

    Research output: Contribution to journal › Conference article

  24. 2018
  25. Published

    Optimization of core retrieval using a Thermo-Poro-Elastic (T-P-E) approach

    Ashena, R., Thonhauser, G., Vortisch, W., Rasouli, V. & Azizmohammadi, S., Aug 2018, In: Journal of Petroleum Science and Engineering. 167.2018, August, p. 577-607 31 p.

    Research output: Contribution to journal › Article › Research › peer-review

  26. 2017
  27. Published

    A Thermoporoelastic (T-P-E) Model Developed for Core Tripping Failure Analysis

    Ashena, R., Thonhauser, G., Ott, H., Rasouli, V., Azizmohammadi, S. & Prohaska-Marchried, M., 27 Aug 2017.

    Research output: Contribution to conference › Presentation › Research › peer-review

  28. 2016
  29. Published

    Application of Computer Programming to Estimate Volumetric Change of an Active Drilling Fluid System Cause by Elastic Deformation of an Open Borehole Section Wall: Application of Computer Programming to Estimate Volumetric Change of an Active Drilling Fluid System Cause by Elastic Deformation of an Open Borehole Section Wall

    Elmgerbi, A., Thonhauser, G. (Co-editor), Prohaska-Marchried, M. (Co-editor), Roohi, A. (Co-editor) & Nascimento, A. (Co-editor), 1 Dec 2016.

    Research output: Contribution to conference › Paper › peer-review

  30. Published

    A Mathematical Approach Using Thermoporoelastic Model for Reamer While Drilling Efficiency Analysis and Closeness

    Roohi, A., Nascimento, A., Elmgerbi, A., Prohaska-Marchried, M. & Thonhauser, G., 5 Jul 2016, In: Research Journal of Applied Sciences, Engineering and Technology. 13.2016, 1, p. 7-14 8 p.

    Research output: Contribution to journal › Article › Research › peer-review

  31. Accepted/In press

    Enhanced Wireline Core Size Retrieval By Casing Drilling Coring

    Ashena, R., Prohaska-Marchried, M., Koller, C., Vortisch, W. & Thonhauser, G., Apr 2016, (Accepted/In press).

    Research output: Contribution to conference › Paper

  32. Accepted/In press

    Innovative Concepts For Wireline Continuous Coring Systems: SPE-180017-MS

    Ashena, R., Thonhauser, G., Vortisch, W., Prohaska-Marchried, M. & Koller, C., Apr 2016, (Accepted/In press).

    Research output: Contribution to conference › Paper

  33. Published

    An Investigation of Stuck Pipe Occurrences in Iran

    Roohi, A., Thonhauser, G., Makvandi, M., Shahbazi, K., Ashena, R., Zamani, A. & Elmgerbi, A., Mar 2016, In: International Journal of Scientific and Engineering Research. 7.2016, 3, p. 1001-1006 6 p.

    Research output: Contribution to journal › Article › Research › peer-review

  34. Published

    General Analytical Solution for Estimating the Elastic Deformation of an Open Borehole Wall

    Elmgerbi, A., Thonhauser, G., Prohaska-Marchried, M., Roohi, A. & Nascimento, A., 11 Feb 2016.

    Research output: Contribution to conference › Paper › peer-review

  35. Published

    Mathematical Approach of MSE in Thermo-Poro-Elastic Conditions Improves Decision Making to Use RWD

    Roohi, A., Elmgerbi, A., Nascimento, A., Prohaska-Marchried, M. & Thonhauser, G., 2016. 13 p.

    Research output: Contribution to conference › Paper

  36. 2015
  37. Published

    A Study of the Applicability of Bourgoyne & Young ROP Model and Fitting Reliability through Regression

    Elmgerbi, A., Thonhauser, G., Prohaska-Marchried, M., Roohi, A., Kutas, D., Nascimento, A. & Hugo Mathias, M., 9 Dec 2015.

    Research output: Contribution to conference › Paper

  38. Published

    Mathematical Modeling Applied to Drilling Engineering: An Application of Bourgoyne and Young ROP Model to a Presalt Case Study

    Elmgerbi, A., Thonhauser, G., Kutas, D., Nascimento, A. & Hugo Mathias, M., 20 Aug 2015, In: Mathematical Problems in Engineering.

    Research output: Contribution to journal › Article › Research › peer-review

  39. Published

    Application of Artificial Neural Networks in Geoscience and Petroleum Industry

    Ashena, R. & Thonhauser, G., 2015, Artificial Intelligent Approaches in Petroleum Geosciences. NY: Springer, p. 127 166 p.

    Research output: Chapter in Book/Report/Conference proceeding › Chapter › Education › peer-review

  40. Published

    Dynamic Drill-rate Test Approach Appplied to a Pre-salt Case Study

    Roohi, A., Nascimento, A., Elmgerbi, A., Prohaska-Marchried, M., Thonhauser, G. & Hugo Mathias, M., 2015. 10 p.

    Research output: Contribution to conference › Paper

  41. 2014
  42. Published

    Assessment of Reliability of Cement Bond Evaluation with Some Interesting Field Case Studies

    Ashena, R. & Thonhauser, G., Nov 2014.

    Research output: Contribution to conference › Paper

  43. Published

    Distributed recognition system for drilling events detection and classification

    Arnaout, A., O'Leary, P., Esmael, B. & Thonhauser, G., 2014, In: International Journal of Hybrid Intelligent Systems. 11, p. 25-39

    Research output: Contribution to journal › Article › Research › peer-review

  44. Published

    Modeling Transportation Logistics, Water Use, and Surface Footprint for Shale Gas Field Developments

    Mitschanek, M., Thonhauser, G. & Prohaska-Marchried, M., 2014, SPE/EAGE European Unconventional Resources Conference and Exhibition. p. 219-226

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  45. Published

    Statistical Study of Stuck Pipe in Different Iranian Oil and Gas Fields

    Roohi, A., Makvandi, M., Thonhauser, G., Shahbazi, K. & Zamani, A., 2014.

    Research output: Contribution to conference › Paper › peer-review

  46. Published

    Statistic Study of Stuck Pipe in Different Iranian Oil and Gas Fields

    Thonhauser, G., 2014, Statistic Study of Stuck Pipe in Different Iranian Oil and Gas Fields. p. 198-203

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  47. 2013
  48. Published

    Drilling Events Detection Using Hybrid Intelligent Segmentation Algorithm

    Arnaout, A., Esmael, B., Fruhwirth, R. & Thonhauser, G., 2013, Hybrid Intelligent Systems (HIS) Conference. p. 1-1

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  49. Published

    Effect of Formations Compressive Strength on Drill String Vibrations

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2013, p. 4237-4240. 4 p.

    Research output: Contribution to conference › Paper › peer-review

  50. Published

    Experimental determination of wellbore diameter and shape (4D imaging of wellbore) by using ultrasonic caliper within different fluids for real-time drilling application

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2013, In: Oil gas European magazine. 39, 1, p. 16-19 4 p.

    Research output: Contribution to journal › Conference article › peer-review

  51. Published

    Experimental Determination of Wellbore Diameter and Shape ( 4D Imaging of Wellbore) by Using Ultrasonic Caliper within Different Fluids for Real-Time Drilling Application

    Thonhauser, G., 2013, In: Erdöl, Erdgas, Kohle. p. 16-19

    Research output: Contribution to journal › Article › Research › peer-review

  52. Published

    Formation Prediction Model based on Drill String Vibration Measurements Using Laboratory Scale Rig

    Esmaeili, A., Elahifar, B., Fruhwirth, R. K. & Thonhauser, G., 2013. 9 p.

    Research output: Contribution to conference › Paper › peer-review

  53. Published

    Improving Time Series Classification Using Hidden Markov Models

    Esmael, B., Arnaout, A., Fruhwirth, R. & Thonhauser, G., 2013, Hybrid Intelligent Systems (HIS) Conference. p. 1-1

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  54. Published

    Model-Based Hookload Monitoring and Prediction at Drilling Rigs using Neural Networks and Forward-Selection Algorithm

    Arnaout, A., Esmael, B., Thonhauser, G. & Fruhwirth, R., 2013, European Geosciences Union General Assembly 2012. p. 1-1

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  55. Published

    Model Based Monitoring of Wellbore Hydraulics for Abnormal Event Detection

    Todorov, D., Fruhwirth, R. K. & Thonhauser, G., 2013, In: Oil gas European magazine. 39, 1, p. 33-35 3 p.

    Research output: Contribution to journal › Conference article › peer-review

  56. Published

    Operations Recognition at Drill-Rigs

    Esmael, B., Arnaout, A., Thonhauser, G. & Fruhwirth, R., 2013, European Geosciences Union General Assembly 2012. p. 1-1

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  57. Published

    Real-Time Classification of Drilling Operations using Trend Analysis of Hookload Sensor Measurements

    Arnaout, A., Esmael, B., Fruhwirth, R. & Thonhauser, G., 2013, Kuwait International Petroleum Conference and Exhibition. p. 1-1

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  58. Published

    Wellbore Instability Monitoring by Using 4D Imaging of Ultrasonic Caliper Logs in Real Time Drilling

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2013, Wellbore Instability Monitoring by Using 4D Imaging of Ultrasonic Caliper Logs in Real Time Drilling. p. 4346-4353 8 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  59. 2012
  60. Published

    Accuracy of ultrasonic sensor in caliper log

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012. 5 p.

    Research output: Contribution to conference › Paper › peer-review

  61. Published

    Accuracy of Ultrasonic Sensor in Caliper Log

    Elahifar, B., Esmaeili, A., Fruhwirth, R. K. & Thonhauser, G., 2012, (I2MTC), 2012 IEEE International. p. 449-453

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  62. Published

    Accuracy of Ultrasonic Sensor in Caliper Log

    Thonhauser, G., 2012, Accuracy of Ultrasonic Sensor in Caliper Log. p. 13-20

    Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  63. Published

    A Statistical Feature-Based Approach for Operations Recognition in Drilling Time Series

    Esmael, B., Arnaout, A., Fruhwirth, R. & Thonhauser, G., 2012, In: International Journal of Computer Information Systems and Industrial Management Applications . 4, 6, p. 100-108

    Research output: Contribution to journal › Article › Research › peer-review

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