Oil & Gas Geology ›› 2022, Vol. 43 ›› Issue (5): 1194-1205.doi: 10.11743/ogg20220515
• Petroleum Geology • Previous Articles Next Articles
Ke Ma1,2(), Jiagen Hou1(), Hu Dong2, Guoqiang Wu2, Lin Yan3, Liwei Zhang2
Received:
2021-12-29
Revised:
2022-07-12
Online:
2022-10-01
Published:
2022-09-02
Contact:
Jiagen Hou
E-mail:k.ma@irocktech.com;houjg63@cup.edu.cn
CLC Number:
Ke Ma, Jiagen Hou, Hu Dong, Guoqiang Wu, Lin Yan, Liwei Zhang. Pore throat characteristics of fine-grained mixed deposits in shale oil reservoirs and their control on reservoir physical properties: A case study of the Permian Lucaogou Formation, Jimsar Sag, Junggar Basin[J]. Oil & Gas Geology, 2022, 43(5): 1194-1205.
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Table 1
Statistics of the physical properties and mercury intrusion parameters of typical lithologic types in the Lucaogou Formation, Jimsar Sag"
地层 | 岩性 | 样品号 | 孔隙度/% | 渗透率/(10-3μm2) | 主要矿物含量/% | 最大连通孔喉 半径/μm | 中值半径/ μm | 排驱压力/ MPa | 退汞效率/ % | |
---|---|---|---|---|---|---|---|---|---|---|
白云石 | 石英+长石 | |||||||||
上甜 点体 | 白云质粉砂岩 | DS-1 | 17.4 | 1.100 | 23.7 | 62.5 | 0.519 | 0.112 | 1.323 | 30.190 |
DS-2 | 6.9 | 0.015 | 18.9 | 74.8 | 0.233 | 0.077 | 3.822 | 22.003 | ||
粉砂质白云岩 | SD-1 | 15.1 | 0.113 | 71.3 | 17.6 | 0.870 | 0.106 | 2.104 | 27.148 | |
SD-2 | 12.7 | 0.023 | 65.8 | 22.1 | 0.359 | 0.063 | 2.566 | 25.332 | ||
砂屑白云岩 | D-1 | 7.1 | 0.017 | 89.6 | 7.8 | 0.753 | 0.055 | 3.771 | 22.969 | |
下甜 点体 | 白云质粉砂岩 | DS-3 | 8.3 | 0.011 | 16.5 | 67.7 | 0.464 | 0.071 | 3.655 | 23.010 |
DS-4 | 4.1 | 0.008 | 26.9 | 62.8 | 0.257 | 0.051 | 4.126 | 20.202 |
Table 2
Statistics of the micro? to nano?scale pore throat structural parameters of different lithologic types in the Jimsar Sag"
岩性 | 孔隙数量/个 | 孔隙体积/(106 μm3) | 喉道数量/个 | 喉道体积/(106 μm3) | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
最大 | 最小 | 平均 | 最大 | 最小 | 平均 | 最大 | 最小 | 平均 | 最大 | 最小 | 平均 | |
粉砂岩类 | 21 214 | 3 146 | 12 651 | 28.0 | 1.2 | 15.1 | 21 187 | 9 181 | 13 045 | 2.77 | 0.62 | 2.10 |
白云岩类 | 16 394 | 7 130 | 11 762 | 9.8 | 4.6 | 7.2 | 17 606 | 8 368 | 12 987 | 3.08 | 0.64 | 1.86 |
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