渤海湾盆地渤中19⁃6气田变质岩潜山储层三维岩石力学参数求取及意义

张冠杰; 程奇; 张雷; 刘文超; 赵雨佳; 吴昊; 沈传波

doi:10.3799/dqkx.2023.195

Volume 50 Issue 2

Feb. 2025

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Article Navigation > Earth Science > 2025 > 50(2): 551-568

Zhang Guanjie, Cheng Qi, Zhang Lei, Liu Wenchao, Zhao Yujia, Wu Hao, Shen Chuanbo, 2025. Calculation of 3D Reservoir Rock Mechanical Parameters of Metamorphic Rock Reservoirs in the Bozhong 19⁃6 Gas Field of the Bohai Bay Basin and Their Significance. Earth Science, 50(2): 551-568. doi: 10.3799/dqkx.2023.195

Citation:

Zhang Guanjie, Cheng Qi, Zhang Lei, Liu Wenchao, Zhao Yujia, Wu Hao, Shen Chuanbo, 2025. Calculation of 3D Reservoir Rock Mechanical Parameters of Metamorphic Rock Reservoirs in the Bozhong 19⁃6 Gas Field of the Bohai Bay Basin and Their Significance. Earth Science, 50(2): 551-568. doi: 10.3799/dqkx.2023.195

Citation:

Zhang Guanjie, Cheng Qi, Zhang Lei, Liu Wenchao, Zhao Yujia, Wu Hao, Shen Chuanbo, 2025. Calculation of 3D Reservoir Rock Mechanical Parameters of Metamorphic Rock Reservoirs in the Bozhong 19⁃6 Gas Field of the Bohai Bay Basin and Their Significance. Earth Science, 50(2): 551-568. doi: 10.3799/dqkx.2023.195

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Calculation of 3D Reservoir Rock Mechanical Parameters of Metamorphic Rock Reservoirs in the Bozhong 19⁃6 Gas Field of the Bohai Bay Basin and Their Significance

doi: 10.3799/dqkx.2023.195

Zhang Guanjie^{1
,
,},
Cheng Qi²,
Zhang Lei²,
Liu Wenchao²,
Zhao Yujia²,
Wu Hao¹,
Shen Chuanbo^{1
,
,
,}

1.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, China University of Geosciences, Wuhan 430074, China
2.
Bohai Oilfield Research Institute, Tianjin Branch, CNOOC China Limited, Tianjin 841000, China

Received Date: 2023-12-22
Available Online: 2025-02-26
Publish Date: 2025-02-25

Abstract

Abstract

Triaxial compaction test, Brazilian test, and triaxial shear test were conducted to characterize the rock mechanical parameters of buried⁃hill reservoirs in the metamorphic rocks of Bozhong 19⁃6 gas field in Bohai Bay Basin and to provide reliable basic data for subsequent numerical simulation of ground stress field and reservoir fractures in this region. Single⁃well dynamic rock mechanical parameters were computed using array acoustic curves, and the single⁃well distributions of static rock mechanical parameters were determined via dynamic⁃static calibration; Prestack seismic multiattribute detection was adopted to deterministically inverse 3D heterogeneous rock mechanical fields and clarify the spatial distribution of rock mechanical parameters. On this basis, physical property test, whole⁃rock mineral analysis and mercury intrusion testing data were used to analyze the main control factors on the rock mechanical parameters. Then the fracture development index and lithological identification charts were built using static rock mechanical parameters. It was found the metamorphic buried⁃hill reservoirs in Bozhong 19⁃6 gas field of Bohai Bay Basin had Young's modulus within 20 to 60 GPa, Poisson's ratio within 0.15 to 0.25, tensile strength within 5 to 15 MPa, and internal friction angle within 30° to 50°. The horizontal distributions of the rock mechanical parameters were highly heterogeneous, and their vertical distributions were mainly related to tectonic properties and the weathering effect, and reflected the physical properties of reservoirs to some extent. Reservoir physical properties, concentrations of different minerals, and pore radius were the main controlling factors of the rock mechanical parameters. The metamorphic buried⁃hill reservoirs were featured by well⁃developed fractures, and complex lithology, and the reservoir fractures and lithology cannot be accurately identified using routine methods. In comparison, the fracture development index, and lithological identification charts built on basis of static rock mechanical parameters are significant in guiding the evaluation of fracture development degree and complex lithologic division in metamorphic buried⁃hill reservoirs.
- Bohai Bay basin,
- Bozhong 19-6 gas field,
- static rock mechanical parameters,
- spatial distributions,
- main control factors,
- fractures,
- petroleum geology

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Calculation of 3D Reservoir Rock Mechanical Parameters of Metamorphic Rock Reservoirs in the Bozhong 19⁃6 Gas Field of the Bohai Bay Basin and Their Significance

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