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25 October 2023 Casing damage in horizontal wells in Daqing oilfield under volumetric fracturing conditions
Xiao Wang, Xueliang Bi, Liang Gao
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Proceedings Volume 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023); 128011M (2023) https://doi.org/10.1117/12.3007012
Event: Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 2023, Dalian, China
Abstract
Fracturing technology can increase the benefits of developing unconventional low-grade resources. However, while fracturing increases the benefits of field development, the problem of casing failure also arises. To investigate the influencing factors of casing failure during oilfield development, this paper constructs a finite element model of casing-cement ring-formation combination and simulates the stress and casing deformation distribution of casing after fracturing for the three cases of formation elastic modulus, construction pressure, and cement ring elastic modulus during fracturing. The results show that the casing load increases as the formation elastic modulus decreases and that the casing stress decreases as the cement ring elastic modulus increases. The construction pressure is an important factor affecting the casing load and displacement. Control of the construction pressure within 90MPa can effectively reduce casing damage
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Xiao Wang, Xueliang Bi, and Liang Gao "Casing damage in horizontal wells in Daqing oilfield under volumetric fracturing conditions", Proc. SPIE 12801, Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023), 128011M (25 October 2023); https://doi.org/10.1117/12.3007012
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KEYWORDS
Deformation
Cements
Elasticity
Elastic modulus
3D modeling
Finite element methods
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