Geochemical Characteristics of Crude Oil and Oil–Source Correlations in the Yongfeng Sub-Sag of the Bogda Mountain Front Belt
Abstract
:1. Introduction
2. Regional Geological Condition
3. Sample Collection and Analysis
3.1. Sample Collection
3.2. Sample Analysis Method
4. Physical Characteristics and Group Components of Crude Oil
4.1. Physical Characteristics of Crude Oil
4.2. Group Components SARA (Saturate, Aromatic, Resin, and Asphaltene) of Crude Oil
5. Geochemical Characteristics of Crude Oil
5.1. Composition and Distribution Characteristics of Alkane Series
5.2. Composition and Distribution Characteristics of Terpenoid Hopane Series
5.3. Composition and Distribution Characteristics of Sterane Series
6. Oil Maturity
7. Oil–Source Correlations
7.1. Geochemical Characteristics of Source Rocks
7.2. Multi Factor Oil–Source Correlations
7.2.1. Correlations of Carbon Isotope Composition Characteristics
7.2.2. Correlations of Distribution Characteristics of Isoprene Alkanes
7.2.3. Correlations of Distribution Characteristics of Terpenoid Compounds
8. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Sample Source | Sample No. | Type | Saturate /% | Aromatic /% | Resin /% | Asphaltene /% | Resin and Asphaltene /% | Collection Rate /% | Saturates/Aromatics |
---|---|---|---|---|---|---|---|---|---|
Well Xyd 1 | 70 | Rock cutting | 52.33 | 11.66 | 18.65 | 15.54 | 34.19 | 98.19 | 4.49 |
91 | 19.43 | 8.57 | 32.00 | 35.43 | 67.43 | 95.43 | 2.27 | ||
97 | 27.22 | 20.71 | 33.14 | 15.98 | 49.12 | 97.04 | 1.31 | ||
102 | 32.43 | 9.26 | 35.97 | 16.89 | 52.86 | 94.55 | 3.50 | ||
112 | 40.60 | 12.26 | 26.98 | 14.99 | 41.97 | 94.82 | 3.31 | ||
117 | 40.40 | 19.19 | 22.90 | 8.42 | 31.32 | 90.91 | 2.11 | ||
121 | 29.90 | 19.28 | 29.74 | 16.99 | 46.73 | 95.92 | 1.55 | ||
127 | 35.03 | 18.84 | 29.94 | 10.52 | 40.46 | 94.34 | 1.86 | ||
Oil-1 | Crude oil | 59.96 | 17.68 | 10.57 | 3.25 | 13.82 | 91.46 | 3.39 | |
Oil-2 | 54.25 | 15.33 | 10.85 | 4.95 | 15.80 | 85.38 | 3.54 | ||
Gjg outcrop | 35 | Rock | 25.62 | 23.14 | 28.51 | 19.83 | 48.34 | 97.11 | 1.11 |
37 | 23.21 | 20.98 | 34.37 | 18.75 | 53.12 | 97.32 | 1.11 | ||
39 | 28.07 | 17.84 | 33.63 | 14.91 | 48.54 | 94.44 | 1.57 | ||
41 | 23.62 | 15.35 | 38.19 | 14.57 | 52.76 | 91.73 | 1.54 | ||
43 | 27.40 | 15.75 | 33.33 | 18.95 | 52.28 | 95.43 | 1.74 | ||
45 | 23.66 | 10.22 | 39.25 | 21.51 | 60.76 | 94.62 | 2.32 | ||
47 | 19.88 | 16.67 | 30.92 | 26.91 | 57.83 | 94.38 | 1.19 | ||
Dhs outcrop | 12 | Rock | 23.08 | 15.38 | 50.00 | 7.69 | 57.69 | 96.15 | 1.50 |
15 | 18.93 | 10.44 | 65.78 | 4.37 | 70.15 | 99.51 | 1.81 | ||
18 | 19.00 | 8.50 | 57.25 | 5.00 | 62.25 | 89.75 | 2.24 | ||
21 | 23.25 | 11.81 | 56.83 | 5.90 | 62.73 | 97.79 | 1.97 |
Sample Source | Sample No. | Type | Pr /Ph | Pr/nC17 | Ph/nC18 | Ga/ C30H | Ts/Tm | C24TET/C26TT | MPI-1 | Rc /% | 4-/1-MDBT | C29-αββ/(αββ + ααα) | C29-ααα20S/(20S + 20R) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Well Xyd 1 | 70 | Rock cutting | 0.71 | 0.42 | 0.58 | 0.22 | 4.43 | 0.90 | 0.51 | 0.72 | 5.26 | 0.44 | 0.40 |
91 | 0.58 | 0.48 | 0.89 | 0.31 | 2.28 | 0.64 | 0.51 | 0.72 | 9.68 | 0.51 | 0.40 | ||
97 | 0.57 | 0.49 | 0.95 | 0.27 | 2.48 | 0.70 | 0.54 | 0.74 | 11.83 | 0.49 | 0.39 | ||
102 | 0.58 | 0.54 | 1.03 | 0.32 | 2.77 | 0.50 | 0.52 | 0.73 | 8.64 | 0.51 | 0.38 | ||
112 | 0.60 | 0.55 | 1.07 | 0.35 | 2.09 | 0.61 | 0.55 | 0.74 | 10.25 | 0.43 | 0.39 | ||
117 | 0.53 | 0.53 | 1.05 | 0.38 | 1.91 | 0.61 | 0.66 | 0.80 | 11.36 | 0.42 | 0.40 | ||
121 | 0.65 | 0.54 | 0.90 | 0.35 | 2.39 | 0.56 | 0.67 | 0.81 | 10.44 | 0.51 | 0.41 | ||
127 | 0.73 | 0.64 | 1.12 | 0.45 | 2.31 | 0.60 | 0.69 | 0.82 | 11.69 | 0.40 | 0.41 | ||
Oil-1 | Crude oil | 1.66 | 0.31 | 0.24 | 0.24 | 1.49 | 0.54 | 0.54 | 0.74 | 3.27 | 0.53 | 0.41 | |
Oil-2 | 1.06 | 0.54 | 0.60 | 0.24 | 1.04 | 0.51 | 1.08 | 1.04 | 2.57 | 0.51 | 0.40 | ||
Gjg outcrop | 35 | Rock | 0.79 | 0.25 | 0.26 | 0.18 | 0.55 | 0.65 | 0.32 | 0.62 | 4.67 | 0.33 | 0.46 |
37 | 0.54 | 0.48 | 0.92 | 0.10 | 0.19 | 1.55 | 0.55 | 0.74 | 2.98 | 0.37 | 0.44 | ||
39 | 0.83 | 0.36 | 0.40 | 0.10 | 0.98 | 1.03 | 0.20 | 0.55 | 3.45 | 0.39 | 0.46 | ||
41 | 0.85 | 0.40 | 0.43 | 0.14 | 0.70 | 0.63 | 0.31 | 0.61 | 4.22 | 0.38 | 0.46 | ||
43 | 0.83 | 0.48 | 0.52 | 0.16 | 0.72 | 0.92 | 0.26 | 0.58 | 3.27 | 0.36 | 0.46 | ||
45 | 0.80 | 0.24 | 0.27 | 0.16 | 0.68 | 0.92 | 0.29 | 0.60 | 2.27 | 0.34 | 0.47 | ||
47 | 0.85 | 0.24 | 0.27 | 0.19 | 0.64 | 0.98 | 0.26 | 0.58 | 2.82 | 0.32 | 0.45 | ||
Dhs outcrop | 12 | Rock | 0.15 | 0.47 | 0.74 | 0.15 | 0.59 | 0.77 | / | / | / | 0.37 | 0.30 |
15 | 0.93 | 0.49 | 0.52 | 0.20 | 0.14 | 1.48 | 0.39 | 0.65 | 0.98 | 0.36 | 0.33 | ||
18 | 0.94 | 0.43 | 0.43 | 0.07 | 0.19 | 2.61 | 0.37 | 0.65 | 4.57 | 0.25 | 0.27 | ||
21 | 0.83 | 0.63 | 0.82 | 0.09 | 0.27 | 1.36 | 0.36 | 0.64 | 1.99 | 0.24 | 0.23 |
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Sun, X.; Wu, J.; Zhou, X.; Gao, Y.; Yang, Y.; Bai, Z.; Yuan, K.; Wen, L.; Chen, Y. Geochemical Characteristics of Crude Oil and Oil–Source Correlations in the Yongfeng Sub-Sag of the Bogda Mountain Front Belt. Energies 2025, 18, 917. https://doi.org/10.3390/en18040917
Sun X, Wu J, Zhou X, Gao Y, Yang Y, Bai Z, Yuan K, Wen L, Chen Y. Geochemical Characteristics of Crude Oil and Oil–Source Correlations in the Yongfeng Sub-Sag of the Bogda Mountain Front Belt. Energies. 2025; 18(4):917. https://doi.org/10.3390/en18040917
Chicago/Turabian StyleSun, Xiangcan, Jianwei Wu, Xingui Zhou, Yongjin Gao, Youxing Yang, Zhongkai Bai, Kun Yuan, Lei Wen, and Yi Chen. 2025. "Geochemical Characteristics of Crude Oil and Oil–Source Correlations in the Yongfeng Sub-Sag of the Bogda Mountain Front Belt" Energies 18, no. 4: 917. https://doi.org/10.3390/en18040917
APA StyleSun, X., Wu, J., Zhou, X., Gao, Y., Yang, Y., Bai, Z., Yuan, K., Wen, L., & Chen, Y. (2025). Geochemical Characteristics of Crude Oil and Oil–Source Correlations in the Yongfeng Sub-Sag of the Bogda Mountain Front Belt. Energies, 18(4), 917. https://doi.org/10.3390/en18040917