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Volume 13
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10.3390/pr13092771
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Article

Fourier Transform-Based Inversion of Surface Deformation for Risk Assessment of Casing Damage: A Case Study of the Daqing Oilfield

by
Chaoyang Hu
1,*,
Kaixuan Xie
1,
Honghui Quan
2,
Fengjiao Wang
1,*,
Erlong Yang
1 and
Shuang Li
3
1
Laboratory of Enhanced Oil Recovery of Education Ministry, Northeast Petroleum University, Daqing 163318, China
2
Tianjin Branch, China National Offshore Oil Corporation (CNOOC) Limited, Tianjin 300452, China
3
The Second Oil Production Plant of Daqing Oilfield Co., Ltd., PetroChina, Daqing 163000, China
*
Authors to whom correspondence should be addressed.
Processes 2025, 13(9), 2771; https://doi.org/10.3390/pr13092771
Submission received: 6 August 2025 / Revised: 18 August 2025 / Accepted: 27 August 2025 / Published: 29 August 2025
(This article belongs to the Topic Advanced Technology for Oil and Nature Gas Exploration)
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Abstract

The intrinsic mechanism linking surface deformation to casing damage due to layer slippage remains unclear. Moreover, no method currently exists for calculating the slip deformation field of horizontal structural weakness planes from surface deformation. Therefore, we present a novel approach to infer formation pore pressure using surface deformation data based on Fourier transform and Wiener filtering. A forward modeling method is used to determine slippage along horizontal structural weakness planes, and a theoretical method is developed to derive slippage from observed surface deformation. We also apply a critical slippage threshold for casing damage to delineate risk zones via a maximum slip calculation model using data from the Daqing Oilfield in China. Our results reveal a strong correlation between casing damage occurrence and identified risk areas; within 6 months, 12 new casing damage wells appeared in high-risk areas, compared with 5 in low-risk zones. This method provides a scientific basis for the formulation of prevention schemes against shear casing damage in oilfields with weak horizontal structures.
Keywords: Daqing oilfield; shear casing damage; standard layer slippage; formation pore pressure; surface deformation; maximum slip calculation model Daqing oilfield; shear casing damage; standard layer slippage; formation pore pressure; surface deformation; maximum slip calculation model

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MDPI and ACS Style

Hu, C.; Xie, K.; Quan, H.; Wang, F.; Yang, E.; Li, S. Fourier Transform-Based Inversion of Surface Deformation for Risk Assessment of Casing Damage: A Case Study of the Daqing Oilfield. Processes 2025, 13, 2771. https://doi.org/10.3390/pr13092771

AMA Style

Hu C, Xie K, Quan H, Wang F, Yang E, Li S. Fourier Transform-Based Inversion of Surface Deformation for Risk Assessment of Casing Damage: A Case Study of the Daqing Oilfield. Processes. 2025; 13(9):2771. https://doi.org/10.3390/pr13092771

Chicago/Turabian Style

Hu, Chaoyang, Kaixuan Xie, Honghui Quan, Fengjiao Wang, Erlong Yang, and Shuang Li. 2025. "Fourier Transform-Based Inversion of Surface Deformation for Risk Assessment of Casing Damage: A Case Study of the Daqing Oilfield" Processes 13, no. 9: 2771. https://doi.org/10.3390/pr13092771

APA Style

Hu, C., Xie, K., Quan, H., Wang, F., Yang, E., & Li, S. (2025). Fourier Transform-Based Inversion of Surface Deformation for Risk Assessment of Casing Damage: A Case Study of the Daqing Oilfield. Processes, 13(9), 2771. https://doi.org/10.3390/pr13092771

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