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Relationship Between Paleogene Reservoir Densification and Hydrocarbon Accumulation in the Xihu Depression

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Abstract

Fluid inclusion analysis and testing were conducted to clarify the relationship between reservoir densification and hydrocarbon accumulation in the Paleogene Pinghu and Huagang formations in the Xihu Depression. The hydrocarbon accumulation stages of the reservoirs were studied in combination with the reconstruction results of burial and thermal evolution histories. Furthermore, the relationship between reservoir densification and accumulation charging was clarified in combination with the pore evolutionary history. In accordance with the time relation between reservoir densification and hydrocarbon charging, the reservoirs were classified into three types: pre-charging, syn-charging, and after-charging densification. Results indicated that large-scale hydrocarbon charging occurred in 11–0Myr. Reservoir densification was mainly caused by strong mechanical compaction and pore filling by well-developed siliceous and carbonate cements. Entering the middle diagenetic stage A1, the reservoir was under an acidic-diagenetic environment, resulting in the development of secondary dissolution pores. If large-scale hydrocarbon charging occurred during this period, then an after-charging densification reservoir, which is the most suitable type for hydrocarbon accumulation, might have developed. Entering the middle diagenetic stage A2, the reservoir was under an acidic-alkaline transitional diagenetic environment. During this stage, dissolution became weak, and compaction and cementation were enhanced, resulting in the continuous loss of pore space and reservoir densification. Entering the middle diagenetic period B, the reservoir was under an alkaline-diagenetic environment, and the reservoir had been largely densified. If large-scale hydrocarbon charging occurred during this period, a pre-charging densified reservoir, which is the worst reservoir type for hydrocarbon accumulation, might have developed.

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References

  • Aïfa, T., Ali Zerrouki, A., Baddari, K., and Géraud, Y., 2014. Magnetic susceptibility and its relation with fractures and petrophysical parameters in the tight sand oil reservoir of Hamra quartzites, southwest of the Hassi Messaoud oil field, Algeria. Journal of Petroleum Science and Engineering, 123: 120–137.

    Article  Google Scholar 

  • Charpentier, R. R., Dolton, G. L., and Ulmishek, G. F., 1995. Annotated bibliography of methodology for assessment of undiscovered oil and gas resources. Natural Resources Research, 4(2): 154–186.

    Google Scholar 

  • Chen, Z. J., 2016. Pore pressure study on low-porosity and low-permeability gas reservoir in Xihu Sag, East China Sea. PhD thesis. China University of Petroleum.

  • Cheng, X., Hou, D. J., Zhao, Z., Jiang, Y. H., Zhou, X. H., Diao, H., et al., 2019. Analysis on the genesis and source of natural gas in Xihu Sag, East China Sea Basin. China Offshore Oil and Gas, 31(3): 50–60 (in Chinese with English abstract).

    Google Scholar 

  • Ci, X. H., Zhang, H. X., Niu, Q., Kang, S. J., Hu, J., Zhang, L. S., et al., 2019. Analysis of tight oil and gas charging characteristics by the carbon isotope field detection technology: A case study of the northern slope of the Minfeng sub-sag in the Bohai Bay Basin. Natural Gas Industry, 39(11): 10–17 (in Chinese with English abstract).

    Google Scholar 

  • Feng, L., Lu, Y. C., Wellner, J. S., Liu, J. S., Liu, X. F., Li, X. Q., et al., 2020. Fluvial morphology and reservoir sand-body architecture in lacustrine rift basins with axial and lateral sediment supplies: Oligocene fluvial-lacustrine succession in the Xihu Sag, East China Sea Shelf Basin. Australian Journal of Earth Sciences, 67: 279–304.

    Article  Google Scholar 

  • Gong, Y., Liu, K., and Zhao, M. J., 2017. Determination of the thicknesses of oil films in micro- and nano-pores in tight oil sands: An example from the southern Songliao Basin, NE China. Arabian Journal of Geosciences, 10(10): 228.

    Article  Google Scholar 

  • Guo, T. Y., 2015. 3D palaeotopography recovery of Pinghu structural belt in Xihu Depression. Master thesis. Ocean university of China.

  • He, J. Q., Liang, S. Y., Chen, Y. F., and Fu, J., 2008. Control on petroleum by Cenozoic tectonic evolution in the Xihu Sag, the East China Sea Basin-Taking petroleum response of the Pinghu formation as an example. Petroleum Geology and Experiment, 30(3): 221–226 (in Chinese with English abstract).

    Google Scholar 

  • Holditch, S. A., 2006. Tight gas sands. Journal of Petroleum Technology, 58(6): 86–93.

    Article  Google Scholar 

  • Jia, C. Z., Zou, C. N., Li, J. Z., Li, D. H., and Zheng, M., 2012. Assessment criteria, main types, basic features and resource prospects of the tight oil in China. Acta Petrolei Sinica, 33(3): 343–350 (in Chinese with English abstract).

    Google Scholar 

  • Jiang, Z. X., Lin, S. G., and Pang, X. Q., 2006. Discrimination of types of tight sand gas reservoirs in Xisanyao formation in Xiaocaohu area. Natural Gas Industry, 26(9): 4–7 (in Chinese with English abstract).

    Google Scholar 

  • Law, B. E., 2002. Basin-centered gas systems. AAPG Bulletin, 86(11): 1891–1919.

    Google Scholar 

  • Li, Y. B., Jiang, B., Zhao, Z. G., Qu, Z. H., Cai, J., and Gong, H. Y., 2014. Tectonic development characteristics and their influence on coal seam distribution characteristics in Xihu Sag, East China Sea: Comparative analysis to the Huangxian Basin in Shandong Province. Journal of China University of Mining & Technology, 43(3): 432–441 (in Chinese with English abstract).

    Google Scholar 

  • Liu, J. S., and Tang, J. C., 2013. Mircoscopic pore texture and percolation features in the low permeability reservoir sand their geological significance in Xihu Sag: A case of Huagang formation in HY structure. China Offshore Oil and Gas, 25(2): 18–23 (in Chinese with English abstract).

    Google Scholar 

  • Liu, Y., Xu, G. S., Zeng, B., Xu, F. H., Zhang, W., Gao, Y., et al., 2018. Relationship between porosity evolution and hydrocarbon charging in tight sandstone reservoirs in Oligocene Huagang formation, Xihu Sag, East China Sea Basin. Petroleum Geology & Experiment, 40(2): 168–176 (in Chinese with English abstract).

    Google Scholar 

  • Mu, X. L., 2017. Global Petroleum E&D Trends and Company Dynamics. Petroleum Industry Press, Beijing, 1–360.

    Google Scholar 

  • Qian, W. D., Yin, T. J., Zhang, C. M., Tang, H. J., and Hou, G. W., 2020. Diagenetic evolution of the Oligocene Huagang formation in Xihu Sag, the East China Sea Shelf Basin. Scientific Reports, 10(1): 19402–19402.

    Article  Google Scholar 

  • Qiu, Z., and Zou, C. N., 2020. Unconventional petroleum sedimentology: Connotation and prospect. Acta Sedimentologica Sinica, 38(1): 1–29 (in Chinese with English abstract).

    Google Scholar 

  • Schmoker, J. W., 2002. Resource-assessment perspectives for unconventional gas systems. AAPG Bulletin, 86(11): 1993–1999.

    Google Scholar 

  • Sobhaniaragh, B., Mansur, W. J., and Peters, F. C., 2016. Three-dimensional investigation of multiple stage hydraulic fracturing in unconventional reservoirs. Journal of Petroleum Science and Engineering, 146: 1063–1078.

    Article  Google Scholar 

  • Song, Y., Li, Z., Jiang, L., and Hong, F., 2015. The concept and the accumulation characteristics of unconventional hydrocarbon resources. Petroleum Science, 12(4): 563–572.

    Article  Google Scholar 

  • Su, A., Chen, H., Lei, M., Li, Q., and Wang, C., 2019. Paleopressure evolution and its origin in the Pinghu slope belt of the Xihu Depression, East China Sea Basin. Marine and Petroleum Geology, 107: 198–213.

    Article  Google Scholar 

  • Tao, S. Z., and Zou, C. N., 2005. Accumulation and distribution of natural gases in Xihu Sag, East China Sea Basin. Petroleum Exploration and Development, 4: 103–110 (in Chinese with English abstract).

    Google Scholar 

  • Tian, G., 2019. Unconventional oil and gas will become an important strategic replacement of conventional oil and gas. Natural Gas Industry, 39(12): 123 (in Chinese with English abstract).

    Google Scholar 

  • Tian, Y., Xiong, Y., Wang, L., Lei, Z. D., Zhang, Y., Yin, X. L., et al., 2019. A compositional model for gas injection IOR/EOR in tight oil reservoirs under coupled nanopore confinement and geomechanics effects. Journal of Natural Gas Science and Engineering, 71: 102973.

    Article  Google Scholar 

  • Wang, W. G., Lin, C. Y., Zhang, X. G., Dong, C. M., Ren, L. H., and Lin, J. L., 2020. Effect of burial history on diagenetic and reservoir-forming process of the Oligocene sandstone in Xihu Sag, East China Sea Basin. Marine and Petroleum Geology, 112: 104034.

    Article  Google Scholar 

  • Yang, C. H., Gao, Z. H., Jiang, Y. M., and Gao, W. Z., 2013. Re-understanding of clastic rock sedimentary facies of Eocene Pinghu formation in Pinghu alope of Xihu Sag. Journal of Oil and Gas Technology, 35(9): 11–14 (in Chinese with English abstract).

    Google Scholar 

  • Zhang, J. P., Tang, X. J., Zhang, T., Zhang, S. L., and Yu, Y. F., 2012. Application of balanced cross section technique to the research of tectonic evolution of Xihu Sag in the East China Sea. Marine Geology Frontiers, 28(8): 31–37 (in Chinese with English abstract).

    Google Scholar 

  • Zhang, J. P., Zhang, T., and Tang, X. J., 2014. Basin type and dynamic environment in the East China Sea Shelf Basin. Acta Geologica Sinica, 88(11): 2033–2043 (in Chinese with English abstract).

    Google Scholar 

  • Zhang, W., Xiao, X. G., Miao, Q., Luo, J., Yu, W. Z., and Xu, Z. X., 2019. Main controlling factor of high quality reservoir and prediction of strong dissolution area in Huagang formation, north-central Xihu Sag, East China Sea. Journal of Chengdu University of Technology (Science & Technology Edition), 46(5): 597–607 (in Chinese with English abstract).

    Google Scholar 

  • Zhang, X. G., Lin, C. Y., Zahid, M. A., Jia, X. P., and Zhang, T., 2017. Paleosalinity and water body type of Eocene Pinghu formation, Xihu Depression, East China Sea Basin. Journal of Petroleum Science and Engineering, 158: 469–478.

    Article  Google Scholar 

  • Zhao, Z. X., Dong, C. M., Lin, C. Y., Zhang, X. G., Duan, D. P., Huang, X., et al., 2018. Classification and origin of ‘sweet spots’ in deep low permeability tight gas reservoirs, Xihu Sag, East China Sea Shelf Basin. Oil & Gas Geology, 39(4): 778–790 (in Chinese with English abstract).

    Google Scholar 

  • Zhao, Z. X., Dong, C. M., Zhang, X. G., Lin, C. Y., Huang, X., Duan, D. P., et al., 2019. Reservoir controlling factors of the Paleogene Oligocene Huagang formation in the north central part of the Xihu Depression, East China Sea Basin, China. Journal of Petroleum Science and Engineering, 175: 159–172.

    Article  Google Scholar 

  • Zhu, X. M., Pan, R., Zhu, S. F., Wei, W., and Ye, L., 2018. Research progress and core issues in tight reservoir exploration. Earth Science Frontiers, 25(2): 141–146 (in Chinese with English abstract).

    Google Scholar 

  • Zou, C. N., Yang, Z., Cui, J. W., Zhu, R. K., Hou, L. H., Tao, S. Z., et al., 2013. Formation mechanism, geological characteristics and development strategy of nonmarine shale oil in China. Petroleum Exploration and Development, 40(1): 14–26.

    Article  Google Scholar 

Download references

Acknowledgements

This study was supported by the National Science and Technology Major Projects (No. 2016ZX05027-002-006) and the Research on the Key Technologies of Exploration and Development in the West of Xihu Depression (No. CNOOC-KJ135ZDXM39SH01).

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Authors and Affiliations

  1. Shanghai Branch of China National Offshore Oil Corporation, Shanghai, 200050, China

    Senqing Hu, Wu Zhang & Qing Miao

  2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu, 610059, China

    Guosheng Xu, Linhai Zhao, Xu Wang & Hengyuan Cui

Authors
  1. Senqing Hu
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  2. Guosheng Xu
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  3. Linhai Zhao
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  4. Xu Wang
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  5. Hengyuan Cui
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  6. Wu Zhang
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  7. Qing Miao
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Correspondence to Guosheng Xu.

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Hu, S., Xu, G., Zhao, L. et al. Relationship Between Paleogene Reservoir Densification and Hydrocarbon Accumulation in the Xihu Depression. J. Ocean Univ. China 20, 777–789 (2021). https://doi.org/10.1007/s11802-021-4569-7

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  • DOI: https://doi.org/10.1007/s11802-021-4569-7

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