China Safety Science Journal ›› 2022, Vol. 32 ›› Issue (2): 74-82.doi: 10.16265/j.cnki.issn1003-3033.2022.02.011
• Safety engineering technology • Previous Articles Next Articles
LUO Zhengshan(), DUAN Yuanzhe, WANG Xiaowan, ZHANG Xinsheng
Received:
2021-11-28
Revised:
2022-01-09
Online:
2022-08-18
Published:
2022-08-28
LUO Zhengshan, DUAN Yuanzhe, WANG Xiaowan, ZHANG Xinsheng. Evaluation on sealing performance of mudstone caprocks of gas reservoir-type gas storage in high temperature environment[J]. China Safety Science Journal, 2022, 32(2): 74-82.
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Tab.1
Experimental data of mudstone under uniaxial compression at different temperature
温度t/℃ | 峰值应力 /MPa | 峰值应变 / | 弹性模量 E/GPa | 单轴抗压强度 /MPa | 损伤变量 | 盖层临界压力 /MPa |
---|---|---|---|---|---|---|
25 | 61.957 | 0.616 | 14.010 | 51.545 | 0 | 51.545 |
100 | 99.544 | 0.599 | 14.931 | 74.895 | -0.066 | 79.838 |
200 | 146.824 | 0.754 | 16.012 | 106.020 | -0.143 | 121.181 |
400 | 242.350 | 1.040 | 22.472 | 155.743 | -0.604 | 249.812 |
600 | 38.727 | 0.693 | 5.915 | 29.767 | 0.578 | 12.562 |
700 | 36.328 | 1.197 | 4.093 | 27.633 | 0.708 | 8.069 |
800 | 29.664 | 0.874 | 3.175 | 23.801 | 0.773 | 5.403 |
Tab.2
Test data of mudstone under different temperature and Brazilian split
温度t/℃ | 峰值应力 /MPa | 峰值应变 / | 弹性模量 E/GPa | 抗压强度 /MPa | 损伤变量 Dt | 盖层临界压力 /MPa |
---|---|---|---|---|---|---|
25 | 4.071 | 0.783 | 5.507 | 6.193 | 0 | 6.193 |
100 | 6.606 | 0.851 | 7.003 | 8.998 | -0.272 | 11.445 |
200 | 9.351 | 1.022 | 6.929 | 12.737 | -0.258 | 16.023 |
400 | 15.857 | 1.282 | 9.227 | 18.711 | -0.676 | 31.360 |
600 | 2.526 | 0.896 | 2.998 | 3.576 | 0.456 | 1.945 |
700 | 2.345 | 1.032 | 2.094 | 3.320 | 0.620 | 1.262 |
800 | 1.935 | 1.017 | 1.815 | 2.860 | 0.671 | 0.941 |
Tab.3
Permeability test data of mudstone specimens at different temperature
试件 编号 | t/℃ | 初始渗透率/ (10-13m2) | 加温后渗透率/ (10-13m2) |
---|---|---|---|
1 | 25 | 5.774 | 4.456 |
2 | 100 | 4.902 | 5.356 |
3 | 200 | 7.923 | 6.843 |
4 | 300 | 5.283 | 1.749×101 |
5 | 400 | 12.437 | 2.547×102 |
6 | 600 | 5.641 | 8.721×102 |
7 | 700 | 7.412 | 4.603×103 |
8 | 800 | 3.522 | 7.439×103 |
9 | 1 000 | 3.375 | 7.982×103 |
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