Journal of Shandong University(Engineering Science) ›› 2025, Vol. 55 ›› Issue (2): 125-133.doi: 10.6040/j.issn.1672-3961.0.2024.190

• Civil Engineering • Previous Articles     Next Articles

Evaluation of containment properties and optimization design of water curtain system for an extended underground oil storage cavern

PENG Zhenhua1, WANG Zhechao2, LI Jiajia2, QIAO Liping3, ZHAO Qinni3, LI Hanshuo2   

  1. 1. CNOOC Petrochemical Engineering Company Limited, Qingdao 266101, Shandong, China;
    2. Key Laboratory of Ministry of Education for Safe Mining in Deep Metal Mines(Northeastern University), Shenyang 110004, Liaoning, China;
    3. College of Resources and Civil Engineering, Northeastern University, Shenyang 110819, Liaoning, China
  • Published:2025-04-15

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Abstract: The expansion of underground water-sealed oil depot may have mutual influenced on the built adjacent caves. In view of the first large-scale groundwater sealing reservoir expansion project in China, this research carried out the analysis of the water-sealed efficiency of the expansion and the analysis of the mutual influence between the expansion project and the water sealing performance of the existing project. The water curtain system of the expansion project was optimized according to the groundwater level and water sealing efficiency. The results showed that the excavation of the expansion cave project had disrupted the initial stable seepage field underground, leading to a slight decrease in the water level of the existing cavern and an increase in water inflow, but the water-sealed of the built cavern still meeting the requirements. The research results indicated that the construction of expansion projects had limited impact on the water tightness of existing projects; Compared to building a separate site for the construction of a reservoir, expanding next to an existing cavern resulted in a decrease in groundwater level and water inflow, but the decrease was not significant and met the water seal requirements. In conclusion, it was feasible to expand next to existing projects. In accordance with the requirements of the groundwater level, the optimization of the water curtain system for expanding the underground water sealed cavern could be carried out by appropriately reducing the pressure of the water curtain holes and increasing the spacing between the water curtain holes.

Key words: extended underground water-sealed cavern, containment property, containment efficiency, water curtain system optimization

CLC Number: 

  • TE822
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[1] WANG Zhechao, ZHANG Zhenjie, LI Shucai, BI Liping, FANG Shuixin, ZHONG Kecheng. Assessment of inter-cavern containment property for underground oil storage caverns using discrete fracture networks [J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2016, 46(2): 94-100.
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