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Geological Characteristics and Challenges of Marine Shale Gas in the Southern Sichuan Basin

Author

Listed:
  • Shasha Sun

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

  • Shiwei Huang

    (Exploration Division of PetroChina Daqing Oilfield Company, Daqing 163000, China)

  • Feng Cheng

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

  • Wenhua Bai

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

  • Zhaoyuan Shao

    (PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China)

Abstract

After more than 10 years of exploration, development, research, and practical efforts, China has opened up new perspectives for the commercial exploitation of marine shale gas. While high shale gas production is a main driver for energy security and economic development in China, there have been few attempts to systemically scientific analysis the challenges, prospect, development strategies, and goals for shale gas. Here, we present a detailed comparison of the differences in shale gas between the Sichuan Basin and North America from multiple dimensions, explain how and to what extent recent advances have been made, discuss the current challenges, and provide strategies to deal with these challenges. We demonstrate that a total of 13 graptolite zones developed in the Wufeng–Longmaxi Formations, achieved by representative cores from 32 coring wells and 7 outcrop profiles, can establish the chronostratigraphic framework in the Sichuan Basin, which leads to the potential impact of high-quality reservoir distribution and shale gas production. Shale gas is still faced with the challenges of complex underground and surface conditions, low single-well EUR, and immature deep development engineering technology. To circumvent these issues, here, we propose several strategies, including sweet-spot optimization, low-cost drilling techniques, and efficient fracturing technologies. Our results strengthen the importance of adopting fundamental theoretical research and practical and feasible development goals to realize more commercial discoveries of shale gas of diverse types and higher growth of shale gas reserves and production.

Suggested Citation

  • Shasha Sun & Shiwei Huang & Feng Cheng & Wenhua Bai & Zhaoyuan Shao, 2023. "Geological Characteristics and Challenges of Marine Shale Gas in the Southern Sichuan Basin," Energies, MDPI, vol. 16(15), pages 1-20, August.
  • Handle: RePEc:gam:jeners:v:16:y:2023:i:15:p:5796-:d:1210515
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    References listed on IDEAS

    as
    1. Zhensheng Shi & Tianqi Zhou & Hongyan Wang & Shasha Sun, 2022. "Depositional Structures and Their Reservoir Characteristics in the Wufeng–Longmaxi Shale in Southern Sichuan Basin, China," Energies, MDPI, vol. 15(5), pages 1-32, February.
    2. Zhou, Guangzhao & Duan, Xianggang & Chang, Jin & Bo, Yu & Huang, Yuhan, 2023. "Investigation of CH4/CO2 competitive adsorption-desorption mechanisms for enhanced shale gas production and carbon sequestration using nuclear magnetic resonance," Energy, Elsevier, vol. 278(PB).
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    Cited by:

    1. Xiaochuan Wang & Gan Feng & Yaoqing Hu & Liuke Huang & Hongqiang Xie & Yu Zhao & Peihua Jin & Chao Liang, 2024. "Recent Advancements in Petroleum and Gas Engineering," Energies, MDPI, vol. 17(18), pages 1-7, September.

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