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Finite Element Method Simulation of Wellbore Stability under Different Operating and Geomechanical Conditions

Junyan Liu1, Ju Liu1, Yan Wang1, Shuang Liu1, Qiao Wang1, Yihe Du2,*

1 Oil & Gas Project Research Institute, PetroChina Tarim Oilfield Company, Korla, 841000, China
2 Petroleum Engineering School, Southwest Petroleum University, Chengdu, 610500, China

* Corresponding Author: Yihe Du. Email: email

(This article belongs to the Special Issue: Solid, Fluid, and Thermal Dynamics in the Development of Unconventional Resources )

Fluid Dynamics & Materials Processing 2024, 20(1), 205-218. https://doi.org/10.32604/fdmp.2023.030645

Abstract

The variation of the principal stress of formations with the working and geo-mechanical conditions can trigger wellbore instabilities and adversely affect the well completion. A finite element model, based on the theory of poro-elasticity and the Mohr-Coulomb rock damage criterion, is used here to analyze such a risk. The changes in wellbore stability before and after reservoir acidification are simulated for different pressure differences. The results indicate that the risk of wellbore instability grows with an increase in the production-pressure difference regardless of whether acidification is completed or not; the same is true for the instability area. After acidizing, the changes in the main geomechanical parameters (i.e., elastic modulus, Poisson’s ratio, and rock strength) cause the maximum wellbore instability coefficient to increase.

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APA Style
Liu, J., Liu, J., Wang, Y., Liu, S., Wang, Q. et al. (2024). Finite element method simulation of wellbore stability under different operating and geomechanical conditions. Fluid Dynamics & Materials Processing, 20(1), 205-218. https://doi.org/10.32604/fdmp.2023.030645
Vancouver Style
Liu J, Liu J, Wang Y, Liu S, Wang Q, Du Y. Finite element method simulation of wellbore stability under different operating and geomechanical conditions. Fluid Dyn Mater Proc. 2024;20(1):205-218 https://doi.org/10.32604/fdmp.2023.030645
IEEE Style
J. Liu, J. Liu, Y. Wang, S. Liu, Q. Wang, and Y. Du "Finite Element Method Simulation of Wellbore Stability under Different Operating and Geomechanical Conditions," Fluid Dyn. Mater. Proc., vol. 20, no. 1, pp. 205-218. 2024. https://doi.org/10.32604/fdmp.2023.030645



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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