Journal of Energy and Natural Resources

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Differential Enrichment Regulation and Genetic Analysis of Tight Sandstone Gas Reservoir

Received: Mar. 20, 2023    Accepted: May 22, 2023    Published: May 29, 2023
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Abstract

In the deep Paleogene of graben basins in eastern China, not only the tight sandstone oil and gas resources, but also the secondary hydrocarbon generation of source rocks are universal and worth studying. In order to elucidate the laws of oil and gas accumulations in tight sandstone with different phases and explore the diversity of its genetic mechanism, Shahejie Formation in Wendong area was taken as an example in this paper to carry out further research. Firstly, the differential enrichment rules of oil and gas reservoirs are clarified from the aspects of spatial distribution, phase type and fluid properties. Secondly, the reasons for differential accumulation of oil and gas reservoirs were analyzed from multiple perspectives by using a variety of methods, such as source rock thermal evolution simulation, fault activity evaluation and reservoir porosity evolution. A large number of researches have been carried out on hydrocarbon generation and expulsion process of source rocks, paleo-temperature and paleo-pressure changes, the connectivity of skeleton sand bodies, reservoir physical property and densification process, tectonic strength and so on. The results indicate that the deep tight sandstone reservoirs of the Paleogene in the Wendong area have a quasi-continuous distribution characteristic of "planar partition and longitudinal zoning". Secondary kerogen cracking gas, crude oil cracking gas, medium light crude oil, and primary kerogen cracking gas are distributed in a semi-circular manner, from the center of Qianliyuan Sag to Wendong graben and rollover anticline belt at the high structural position. In conclusion, the two periods of hydrocarbon generation and expulsion of source rocks lead to the discontinuity of hydrocarbon accumulation process. Paleo-temperature and paleo-pressure conditions control the phase types of hydrocarbon filling. The lateral connectivity and the difference of physical properties of the skeleton sand bodies limit the distribution range of oil and gas reservoirs. The temporal and spatial availability of faults during the critical accumulation period determines the differential enrichment of oil and gas. The temporal and spatial validity of faults during the critical accumulation period determines the extent of differential enrichment of oil and gas.

DOI 10.11648/j.jenr.20231202.11
Published in Journal of Energy and Natural Resources ( Volume 12, Issue 2, June 2023 )
Page(s) 12-20
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This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Enrichment Regulation, Genetic Analysis, Tight Sandstone Oil and Gas Reservoir, Deep Paleogene Layer

References
[1] Sun Longde, Zou Caineng, Jia Ailing, et al. Development characteristics and orientation of tight oil and gas in China. Petroleum Exploration and Development. 2019, 46 (06), pp. 1015-1026.
[2] Wu Xishun, Sun Zhangtao, Yang Tiantian, et al. Global unconventional oil and gas exploration and development progress and resource potential. Marine geology, 2020, 36, pp. 1-17.
[3] Cai Xunyu, Qiu Guiqiang, Sun Dongsheng, et al. Types and characteristics of tight sandstone sweet spots in large basins of central-western China. Oil & Gas Geology, 2020, 41 (04), pp. 684-695.
[4] Lyu Xueying, Jiang Youlu, Liu Jingdog, et al. Accumulation mechanism of deep-seated tight sandstone gas reservoirs in the Duzhai Gas Field, Bohai Bay Basin. Natural gas industry, 2018, 38 (07), pp. 34-43.
[5] Xu Haibo, Cheng Xiushen, Xu Tianwu, et al. Characteristics About Hydrocarbon Accumulation Controlled by Structure in Paleogene of Dongpu Sag. Geoscience, 2020, 34 (6), pp. 1119-1131.
[6] Liu Jingdog, Jiang Youlu, Zhang Yuanyuan, et al. Genesis and charge difference of Paleogene tight sandstone gas in Dongpu sag. Acta Petrolei Sinica, 2017, 38 (9), pp. 1010-1020.
[7] Fan Changyu, Wang Zhenliang and Li Ping. Influence of Neotectonics on hydrocarbon generation in the Paleogene source rocks of the northern Dongpu Depression and its implications for the forming of oil gas pools in shallow strata. Oil and Gas Geology, 2010, 31 (3), pp. 386-392.
[8] Zhang Yuanyuan, Jiang Youlu, Liu Jingdong, et al. Coupling relationship between deep sandstone reservoir densification and hydrocarbon injection of Duzhai area, Dongpu Depression. Journal of Northeast Petroleum University, 2016, 40 (3), pp. 70-79.
[9] Xu Tianwu, Zhang Hongan, Li Jidong, et al. Characters of hydrocarbon generation and accumulation of salt- lake facies in Dongpu Sag, Bohai Bay Basin. Oil and Gas Geology, 2019, 40 (2), pp. 248-261.
[10] Liu Xiuyan, Chen Hanhong, Zhang Hongan, et al. Characteristics of Oil Reservoiring and Its Relationship with Pressure Evolution of Shahejie Formation in Pucheng Area. Earth Science, 2020, 45 (6), pp. 2210-2220.
[11] Wang Ke, Pang Xiongqi, Zhang Hongan, et al. Characteristics and genetic types of natural gas in the northern Dongpu Depression, Bohai Bay Basin, China. Journal of Petroleum Science and Engineering, 2018, vol. 170, pp. 453-466.
[12] Monika W, Wojciech K. Environmental risk assessment for exploration and extraction processes of unconventional hydrocarbon deposits of shale gas and tight gas: Pomeranian and Carpathian Region case study as largest onshore oilfields. Journal of Earth Science, 2020, 31 (4), pp. 215-222.
[13] Wang Qifeng, Jiang Fujie, Ji Hancheng, et al. Differential Enrichment of Organic Matter in Saline Lacustrine Source Rocks in a Rift Basin: A Case Study of Paleogene Source Rocks, Dongpu Depression, Bohai Bay Basin. Natural Resources Research, 2020, vol. 29, pp. 4053–4072.
[14] Liu Xiuyan, Chen Hanhong, Xuewei Xiao, et al. Mixing Characteristics of Oil Inclusions with Different Thermal Maturities in the Wenliu Uplift, Dongpu Depression, Bohai Bay Basin, North China. Journal of Earth Science, 2020, 31 (6), pp. 1251-1258.
[15] Song Hongyu, Ji Youliang, Zhou Yong. Reservoir Characteri- stic and Diagenetic Evolution Sequence in the Middle Sub- member of Es3 of Dongpu Sag. Sino-Global Energy, 2021, 26 (2), pp. 27-34.
[16] Zhang Yuanyuan, Ren Zhanli, Jiang Youlu, et al. Differential hydrocarbon enrichment in deep Paleogene tight sandstones of the Dongpu Depression in Eastern China. Energy Exploration & Exploitation, 2021, 39 (3), pp. 797-814.
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  • APA Style

    Zhang Yuan-yuan, Wang Ji-ping, Li Ya, Cao Jiang-jun, Liu Jing-dong. (2023). Differential Enrichment Regulation and Genetic Analysis of Tight Sandstone Gas Reservoir. Journal of Energy and Natural Resources, 12(2), 12-20. https://doi.org/10.11648/j.jenr.20231202.11

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    ACS Style

    Zhang Yuan-yuan; Wang Ji-ping; Li Ya; Cao Jiang-jun; Liu Jing-dong. Differential Enrichment Regulation and Genetic Analysis of Tight Sandstone Gas Reservoir. J. Energy Nat. Resour. 2023, 12(2), 12-20. doi: 10.11648/j.jenr.20231202.11

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    AMA Style

    Zhang Yuan-yuan, Wang Ji-ping, Li Ya, Cao Jiang-jun, Liu Jing-dong. Differential Enrichment Regulation and Genetic Analysis of Tight Sandstone Gas Reservoir. J Energy Nat Resour. 2023;12(2):12-20. doi: 10.11648/j.jenr.20231202.11

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  • @article{10.11648/j.jenr.20231202.11,
      author = {Zhang Yuan-yuan and Wang Ji-ping and Li Ya and Cao Jiang-jun and Liu Jing-dong},
      title = {Differential Enrichment Regulation and Genetic Analysis of Tight Sandstone Gas Reservoir},
      journal = {Journal of Energy and Natural Resources},
      volume = {12},
      number = {2},
      pages = {12-20},
      doi = {10.11648/j.jenr.20231202.11},
      url = {https://doi.org/10.11648/j.jenr.20231202.11},
      eprint = {https://download.sciencepg.com/pdf/10.11648.j.jenr.20231202.11},
      abstract = {In the deep Paleogene of graben basins in eastern China, not only the tight sandstone oil and gas resources, but also the secondary hydrocarbon generation of source rocks are universal and worth studying. In order to elucidate the laws of oil and gas accumulations in tight sandstone with different phases and explore the diversity of its genetic mechanism, Shahejie Formation in Wendong area was taken as an example in this paper to carry out further research. Firstly, the differential enrichment rules of oil and gas reservoirs are clarified from the aspects of spatial distribution, phase type and fluid properties. Secondly, the reasons for differential accumulation of oil and gas reservoirs were analyzed from multiple perspectives by using a variety of methods, such as source rock thermal evolution simulation, fault activity evaluation and reservoir porosity evolution. A large number of researches have been carried out on hydrocarbon generation and expulsion process of source rocks, paleo-temperature and paleo-pressure changes, the connectivity of skeleton sand bodies, reservoir physical property and densification process, tectonic strength and so on. The results indicate that the deep tight sandstone reservoirs of the Paleogene in the Wendong area have a quasi-continuous distribution characteristic of "planar partition and longitudinal zoning". Secondary kerogen cracking gas, crude oil cracking gas, medium light crude oil, and primary kerogen cracking gas are distributed in a semi-circular manner, from the center of Qianliyuan Sag to Wendong graben and rollover anticline belt at the high structural position. In conclusion, the two periods of hydrocarbon generation and expulsion of source rocks lead to the discontinuity of hydrocarbon accumulation process. Paleo-temperature and paleo-pressure conditions control the phase types of hydrocarbon filling. The lateral connectivity and the difference of physical properties of the skeleton sand bodies limit the distribution range of oil and gas reservoirs. The temporal and spatial availability of faults during the critical accumulation period determines the differential enrichment of oil and gas. The temporal and spatial validity of faults during the critical accumulation period determines the extent of differential enrichment of oil and gas.},
     year = {2023}
    }
    

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  • TY  - JOUR
    T1  - Differential Enrichment Regulation and Genetic Analysis of Tight Sandstone Gas Reservoir
    AU  - Zhang Yuan-yuan
    AU  - Wang Ji-ping
    AU  - Li Ya
    AU  - Cao Jiang-jun
    AU  - Liu Jing-dong
    Y1  - 2023/05/29
    PY  - 2023
    N1  - https://doi.org/10.11648/j.jenr.20231202.11
    DO  - 10.11648/j.jenr.20231202.11
    T2  - Journal of Energy and Natural Resources
    JF  - Journal of Energy and Natural Resources
    JO  - Journal of Energy and Natural Resources
    SP  - 12
    EP  - 20
    PB  - Science Publishing Group
    SN  - 2330-7404
    UR  - https://doi.org/10.11648/j.jenr.20231202.11
    AB  - In the deep Paleogene of graben basins in eastern China, not only the tight sandstone oil and gas resources, but also the secondary hydrocarbon generation of source rocks are universal and worth studying. In order to elucidate the laws of oil and gas accumulations in tight sandstone with different phases and explore the diversity of its genetic mechanism, Shahejie Formation in Wendong area was taken as an example in this paper to carry out further research. Firstly, the differential enrichment rules of oil and gas reservoirs are clarified from the aspects of spatial distribution, phase type and fluid properties. Secondly, the reasons for differential accumulation of oil and gas reservoirs were analyzed from multiple perspectives by using a variety of methods, such as source rock thermal evolution simulation, fault activity evaluation and reservoir porosity evolution. A large number of researches have been carried out on hydrocarbon generation and expulsion process of source rocks, paleo-temperature and paleo-pressure changes, the connectivity of skeleton sand bodies, reservoir physical property and densification process, tectonic strength and so on. The results indicate that the deep tight sandstone reservoirs of the Paleogene in the Wendong area have a quasi-continuous distribution characteristic of "planar partition and longitudinal zoning". Secondary kerogen cracking gas, crude oil cracking gas, medium light crude oil, and primary kerogen cracking gas are distributed in a semi-circular manner, from the center of Qianliyuan Sag to Wendong graben and rollover anticline belt at the high structural position. In conclusion, the two periods of hydrocarbon generation and expulsion of source rocks lead to the discontinuity of hydrocarbon accumulation process. Paleo-temperature and paleo-pressure conditions control the phase types of hydrocarbon filling. The lateral connectivity and the difference of physical properties of the skeleton sand bodies limit the distribution range of oil and gas reservoirs. The temporal and spatial availability of faults during the critical accumulation period determines the differential enrichment of oil and gas. The temporal and spatial validity of faults during the critical accumulation period determines the extent of differential enrichment of oil and gas.
    VL  - 12
    IS  - 2
    ER  - 

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Author Information
  • Exploration and Development Research Institute, PetroChina Changqing Oilfield Company, Xi’an, China

  • Exploration and Development Research Institute, PetroChina Changqing Oilfield Company, Xi’an, China

  • Exploration and Development Research Institute, PetroChina Changqing Oilfield Company, Xi’an, China

  • Exploration and Development Research Institute, PetroChina Changqing Oilfield Company, Xi’an, China

  • School of Geosciences, China University of Petroleum (East China), Qingdao, China

  • Section