A Comprehensive Digital Twin Framework for Drilling Applications in R&D, Training, Testing and Control
Abstract
This doctoral thesis presents additions to a comprehensive framework for applying digital twins to drilling operations, encompassing training, testing, real-time monitoring, and control.
The thesis adopts a hybrid format, combining elements of a monograph and an article-based dissertation. The thesis details the development of core simulation models for downhole phenomena using a Finite Element Method approach. The articles emphasize applying these models to analyze downhole behavior and optimize operational parameters.
Key contributions include insights into the weight-on-bit and bit position during drilling. Additionally, the research has enhanced the understanding of high-pressure surge dynamics in floating vessels and demonstrated how coated pipes can significantly reduce downhole temperatures, facilitating operations in high-temperature environments.
The research also contributed to commercializing several technologies, including digital twins for Managed Pressure Drilling (MPD) operations, web-based planning applications, and enhancement of the NOV training simulator. The outcomes have been validated through industrial collaborations, yielding operational improvements and new drilling simulation and control capabilities.
By integrating physics-based simulations with real-world applications, this thesis advances the role of digital twins in the oil and gas industry, addressing complex challenges in drilling operations and setting the stage for future innovation.
Has parts
Paper 1: Thoresen, Karl Erik; Haugen, Bjørn; Kyllingstad, Åge. A study of the heave-induced surge and swap pressures when a drillstring is in the slips of a floating vessel. Journal of Petroleum Science and Engineering 2021 ;Volum 210. s. - Published by Elsevier B.V. This is an open access article under the CC BY license. Available at: http://dx.doi.org/10.1016/j.petrol.2021.109909Paper 2: Thoresen, Karl Erik; Haugen, Bjørn. [2024]. Analysis of Thermal Performance in Coating-Only Insulated Drill Pipes. Submitted to SPE Journal. This paper is submitted for publication and is therefore not included.
Paper 3: Thoresen, Karl Erik; Kyllingstad, Åge; Hovland, Svein; Hetland, Anders. [2019]. Using an advanced digital twin to improve downhole pressure control. In 3 SPE/IADC Drilling Conference, Vol. 2019-March, Society of Petroleum Engineers (SPE), pp. 5–7. This paper is not included due to copyright restrictions.
Paper 4: Thoresen, Karl Erik; Kyllingstad, Åge. [2018]. Improving surfaceWOB accuracy.In Society of Petroleum Engineers - IADC/SPE Drilling Conference and Exhibition, DC 2018, Vol. 2018-March, Society of Petroleum Engineers. This paper is not included due to copyright restrictions.
Paper 5: Kyllingstad, Åge; Thoresen, Karl Erik. [2019]. Improving accuracy of well depth and ROP. In SPE/IADC Drilling Conference, Vol. 2019-March, Society of Petroleum Engineers (SPE), p. 15. This paper is not included due to copyright restrictions.