Oil & Gas Geology ›› 2020, Vol. 41 ›› Issue (6): 1310-1320.doi: 10.11743/ogg20200619
• Methods and Technologies • Previous Articles Next Articles
Mo Deng1(), Xinguo Duan2, Changbo Zhai1, Shengxiang Long3,4, Zhenheng Yang1, Lunju Zheng1, Zhangchang Li2, Taotao Cao5,*()
Received:
2018-09-17
Online:
2020-12-28
Published:
2020-12-09
Contact:
Taotao Cao
E-mail:dengmo.syky@sinopec.com;515165359@163.com
CLC Number:
Mo Deng, Xinguo Duan, Changbo Zhai, Shengxiang Long, Zhenheng Yang, Lunju Zheng, Zhangchang Li, Taotao Cao. Variation in liquid hydrocarbon content during thermal simulation and its influence on physical property of shale[J]. Oil & Gas Geology, 2020, 41(6): 1310-1320.
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Table 1
Geochemical characteristics of the original shale and corresponding thermally simulated samples of the Dalong Formation in the Sichuan Basin"
样品编号 | 模拟温度/℃ | TOC/% | S1/(mg·g-1) | S2/(mg·g-1) | HI/(mg·g-1) | Tmax/ ℃ | 氯仿沥青“A”含量/% |
DL-O | 原岩 | 9.83 | 1.03 | 37.70 | 371 | 440 | 1.11 |
DL-325 | 325 | 7.17 | 2.21 | 22.60 | 324 | 439 | 3.73 |
DL-340 | 340 | 7.30 | 4.84 | 18.81 | 258 | 438 | 3.34 |
DL-360 | 360 | 5.76 | 4.95 | 9.72 | 164 | 444 | 1.97 |
DL-400 | 400 | 6.26 | 2.56 | 246.00 | 35 | 571 | 0.59 |
DL-420 | 420 | 6.26 | 1.64 | 1.37 | 20 | 587 | 0.24 |
DL-450 | 450 | 7.71 | 0.53 | 0.56 | 7 | 605 | 0.04 |
DL-480 | 480 | 4.15 | 0.47 | 0.19 | 4 | 607 | 0.04 |
DL-500 | 500 | 4.10 | 0.14 | 0.12 | 3 | 607 | 0.02 |
DL-550 | 550 | 5.38 | 0.07 | 0.00 | 0 | — | 0.00 |
Table 2
Pore structure parameters of the Dalong Formation original shale and samples under thermal simulation, Sichuan Basin"
样品编号 | 模拟条件 | 氮气吸附结果 | ||||||
地层压力/MPa | 静岩压力/MPa | 比表面积/(m2·g-1) | 孔体积/(cm3·g-1) | 微孔体积/(cm3·g-1) | 中孔体积/(cm3·g-1) | 大孔体积/(cm3·g-1) | ||
DL-O | 0.92 | 0.006 | 0.000 2 | 0.003 0 | 0.003 3 | |||
DL-325 | 23 | 48 | 1.06 | 0.011 | 0.000 4 | 0.004 9 | 0.005 5 | |
DL-340 | 34 | 70 | 1.08 | 0.013 | 0.000 5 | 0.005 7 | 0.007 0 | |
DL-360 | 49 | 102 | 3.68 | 0.022 | 0.000 6 | 0.008 0 | 0.013 0 | |
DL-400 | 53 | 110 | 3.02 | 0.024 | 0.001 0 | 0.010 9 | 0.011 7 | |
DL-420 | 55 | 115 | 1.83 | 0.020 | 0.000 9 | 0.007 7 | 0.011 5 | |
DL-450 | 58 | 120 | 2.18 | 0.019 | 0.001 0 | 0.008 2 | 0.010 3 | |
DL-480 | 62 | 130 | 3.52 | 0.022 | 0.001 7 | 0.008 6 | 0.012 0 | |
DL-500 | 67 | 140 | 6.84 | 0.027 | 0.003 3 | 0.010 1 | 0.014 0 | |
DL-550 | 72 | 150 | 8.02 | 0.014 | 0.003 8 | 0.006 8 | 0.003 0 |
Table 3
Pore structure parameters of the simulated and extracted shale samples from the Dalong Formation, Sichuan Basin"
样品编号 | 比表面积/(m2·g-1) | 孔体积/(mL·g-1) | 微孔体积/(mL·g-1) | 中孔体积/(mL·g-1) | 大孔体积/(mL·g-1) |
DL-325-E | 3.11 | 0.033 | 0.001 3 | 0.01 3 | 0.019 |
DL-340-E | 3.72 | 0.032 | 0.001 4 | 0.01 4 | 0.017 |
DL-360-E | 4.17 | 0.027 | 0.001 5 | 0.00 9 | 0.016 |
DL-400-E | 7.76 | 0.040 | 0.003 3 | 0.01 5 | 0.022 |
DL-420-E | 9.92 | 0.039 | 0.004 0 | 0.01 8 | 0.017 |
DL-450-E | 8.26 | 0.018 | 0.003 5 | 0.01 0 | 0.004 |
DL-480-E | 9.01 | 0.019 | 0.003 8 | 0.008 7 | 0.006 8 |
DL-500-E | 9.58 | 0.039 | 0.004 1 | 0.014 | 0.021 |
DL-550-E | 15.37 | 0.034 | 0.006 7 | 0.012 | 0.015 |
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