Oil & Gas Geology ›› 2020, Vol. 41 ›› Issue (5): 903-912, 984.doi: 10.11743/ogg20200502
• Petroleum Geology • Previous Articles Next Articles
Anwen Hu(), Deying Wang, Haibo Yu, Tao Jiang, Zhe Sun
Received:
2020-03-23
Online:
2020-10-28
Published:
2020-10-22
CLC Number:
Anwen Hu, Deying Wang, Haibo Yu, Tao Jiang, Zhe Sun. Genesis of natural gas and genetic relationship between the gas and associated condensate in Bozhong 19-6 gas condensate field, Bohai Bay Basin[J]. Oil & Gas Geology, 2020, 41(5): 903-912, 984.
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Table 1
Composition characteristics of natural gas from the Bozhong 19-6 gas condensate field, Bohai Bay Basin"
井号 | 深度/m | 层位 | 天然气组分含量(体积百分数)/% | 干燥系数 (C1/C1+) | |||||||
C1 | C2 | C3 | C4 | C5 | C6+ | N2 | CO2 | ||||
J1 | 3 566.8~3 634.0 | 古近系孔店组 | 76.75 | 8.68 | 2.98 | 1.35 | 0.54 | 0.20 | 0.13 | 9.37 | 0.85 |
J1 | 4 043.4~4 142.0 | 太古宇 | 70.85 | 8.04 | 2.82 | 1.30 | 0.46 | 0.11 | 0.15 | 16.27 | 0.85 |
J2 | 3 873.7~3 923.5 | 太古宇 | 78.27 | 8.19 | 2.59 | 1.07 | 0.32 | 0.10 | 0.11 | 9.35 | 0.86 |
J2 | 3 879.0~3 998.7 | 太古宇 | 77.78 | 8.22 | 2.78 | 1.28 | 0.49 | 0.16 | 0.12 | 9.19 | 0.86 |
J4 | 4 411.0~4 499.8 | 太古宇 | 75.41 | 8.83 | 3.01 | 1.36 | 0.54 | 0.17 | 0.19 | 10.49 | 0.84 |
J5 | 3 500.0~3 566.0 | 古近系孔店组 | 77.40 | 8.21 | 2.95 | 1.38 | 0.60 | 0.31 | 0 | 9.15 | 0.85 |
Table 2
Physical properties and gas chromatography parameters of condensates from the Bozhong 19-6 gas condensate field, Bohai Bay Basin"
井号 | 深度/m | 层位 | 密度/(g·cm-3) | 粘度/(mPa·s) | 含蜡量/% | 胶质含量/% | 沥青质含量/% | 凝固点/℃ | 主峰碳 | ∑C21-/∑C22+ |
J1 | 3 566.8~3 634.0 | 古近系孔店组 | 0.795 | 1.42 | 13.95 | 0.76 | 0.31 | 22 | 19 | 1.05 |
J1 | 4 043.4~4 142.0 | 太古宇 | 0.793 | 1.24 | 11.80 | 0.84 | 0.15 | 12 | 19 | 1.01 |
J2 | 3 873.7~3 923.5 | 太古宇 | 0.799 | 1.54 | 15.04 | 0.41 | 0.28 | 17 | 16 | 2.05 |
J2 | 3 879.0~3 998.7 | 太古宇 | 0.809 | 2.14 | 13.84 | 1.28 | 0.14 | 22 | 15 | 2.37 |
J2 | 4 261.0 | 太古宇 | 0.811 | 2.44 | 17.79 | 1.40 | 0.25 | 20 | 15 | 2.29 |
J3 | 4 079.2 | 古近系孔店组 | 0.787 | 2.06 | 7.32 | 0.57 | 0.02 | 11 | 15 | 1.81 |
J4 | 4 411.0~4 499.8 | 太古宇 | 0.798 | 1.65 | 18.25 | 0.57 | 0.22 | 22 | 19 | 0.99 |
J5 | 3 500.0~3 566.0 | 古近系孔店组 | 0.791 | 10.52 | 0.96 | 0.74 | 16 | 17 | 1.49 | |
平均值 | 0.798 | 1.78 | 13.56 | 0.85 | 0.26 | 18 | 17 | 1.63 |
Table 3
Maturity parameters of the light hydrocarbons and aromatic fraction of condensate samples from the Bozhong 19-6 gas condensate field, Bohai Bay Basin"
井号 | 深度/m | 层位 | 轻烃成熟度参数 | 芳烃成熟度参数 | |||||||||
2, 4-DMC5/2, 3-DMC5 | T/℃ | 石蜡指数 | 烷-芳指数 | MPI1 | MPI2 | 4, 6-DMDBT/1, 4-DMDBT | 2, 4-DMDBT/1, 4-DMDBT | Rc1 | Rc2 | ||||
J1 | 3 566.8~3 634.0 | 古近系孔店组 | 0.38 | 125.5 | 1.8 | 18.9 | 2.1 | 2.3 | — | — | — | — | |
J1 | 4 043.4~4 142.0 | 太古宇 | 0.24 | 118.8 | 1.7 | 21.1 | 2.2 | 3.1 | — | — | — | — | |
J2 | 4 261.0 | 太古宇 | — | — | — | — | 1.2 | 1.3 | 3.1 | 1.8 | 1.0 | 1.1 | |
J3 | 4 079.2 | 古近系孔店组 | — | — | — | — | 1.4 | 1.5 | 2.8 | 1.8 | 1.0 | 1.1 | |
J4 | 4 411.0~4 499.8 | 太古宇 | — | — | — | — | 2.5 | 2.9 | 3.7 | 2.1 | 1.0 | 1.2 | |
J5 | 3 500.0~3 566.0 | 古近系孔店组 | — | — | — | — | 1.9 | 2.3 | 2.2 | 1.6 | 0.9 | 1.0 |
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