JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2016, Vol. 46 ›› Issue (2): 94-100.doi: 10.6040/j.issn.1672-3961.0.2015.278

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Assessment of inter-cavern containment property for underground oil storage caverns using discrete fracture networks

WANG Zhechao, ZHANG Zhenjie, LI Shucai, BI Liping, FANG Shuixin, ZHONG Kecheng   

  1. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China
  • Received:2015-08-19 Online:2016-04-20 Published:2015-08-19

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Abstract: In order to study the inter-cavern containment property for underground oil storage caverns, combining with Huangdao underground oil storage caverns project, seven different cases were investigated by the discrete fracture network method. The water curtain pressure, inter-cavern oil level difference, cavern spacing and joint inclination angles could influent groundwater head distribution and seepage in fracture network. It was concluded that a higher water curtain pressure, smaller inter-cavern oil level difference or wider cavern spacing could improve the inter-cavern containment property of the facility. The inclination angles of rock joints affected the prevailing flow path in the fracture network and thus the inter-cavern containment property of the facility. It was indicated that a favorable inter-cavern containment property would not be guaranteed by increasing the water curtain pressure alone. And the inter-cavern containment property of an underground oil storage project depended on a combined effect of water curtain pressure, stored oil levels, cavern spacing and joint inclination angle.

Key words: inter-cavern containment property, discrete fracture network, fluid flow through joints, underground storage caverns, joints inclination angle, prevailing flow path

CLC Number: 

  • U459.3
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