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New Model of Granite Buried-Hill Reservoir in PL Oilfield, Bohai Sea, China

Author

Listed:
  • Daji Jia

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
    College of Geosciences, China University of Petroleum, Beijing 102249, China)

  • Xiaomin Zhu

    (State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
    College of Geosciences, China University of Petroleum, Beijing 102249, China)

  • Laiming Song

    (State Key Laboratory of Offshore Oil Exploitation, Beijing 100028, China
    CNOOC Research Institute Co., Ltd., Beijing 100028, China)

  • Xu Liang

    (State Key Laboratory of Offshore Oil Exploitation, Beijing 100028, China
    CNOOC Research Institute Co., Ltd., Beijing 100028, China)

  • Li Li

    (International Education Exchange Center, Langfang Normal University, Langfang 065000, China
    Heilongjiang Northeast Petroleum University Science Park Development Co., Ltd., Daqing 163000, China)

  • Haichen Li

    (School of Earth and Space Sciences, Peking University, Beijing 100871, China)

  • Zhandong Li

    (College of Offshore Oil & Gas Engineering, Northeast Petroleum University, Daqing 163318, China)

Abstract

The geological estimated hydrocarbon reserves of the Mesozoic granite buried-hill reservoir in the PL oilfield exceed 200 million tons. During the exploration stage, it was commonly considered that the PL buried-hill reservoir should demonstrate a “layered” edge water reservoir mode, because of weathering and tectonics. However, during a later stage, the formation of water was found at structurally high locations, which does not fit the intuition. Therefore, a suitable model is still lacking. Based on the comprehensive information of thin-section, core plug, well logging, and seismic data, etc., the buried-hill of the PL oilfield was re-divided into three northeast–southwest-trending zones. In this model, the reservoir is layered, with each layer having the characteristics of bottom water and two kinds of horizontal and vertical seepage. This new model fits the field-drilling test very well. These insights can effectively guide the exploration and development practice for this kind of buried-hill.

Suggested Citation

  • Daji Jia & Xiaomin Zhu & Laiming Song & Xu Liang & Li Li & Haichen Li & Zhandong Li, 2022. "New Model of Granite Buried-Hill Reservoir in PL Oilfield, Bohai Sea, China," Energies, MDPI, vol. 15(15), pages 1-15, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:15:p:5702-:d:881426
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    Cited by:

    1. Yun Xia & Wenpeng Bai & Zhipeng Xiang & Wanbin Wang & Qiao Guo & Yang Wang & Shiqing Cheng, 2022. "Improvement of Gas Compressibility Factor and Bottom-Hole Pressure Calculation Method for HTHP Reservoirs: A Field Case in Junggar Basin, China," Energies, MDPI, vol. 15(22), pages 1-20, November.

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