A study of water curtain parameters of underground oil storage caverns using time series monitoring and numerical simulation
| Autor: | Maoxin Su, Fanmeng Kong, Peng Wang, Daohong Qiu, Guangkun Li, Ning Zexu, Zhiqiang Li, Yiguo Xue |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Petroleum engineering
Series (mathematics) Water curtain Computer simulation 0211 other engineering and technologies General Engineering 02 engineering and technology Inflow 010502 geochemistry & geophysics 01 natural sciences Finite element method Hydraulic head Underground storage Environmental science Oil storage 021101 geological & geomatics engineering 0105 earth and related environmental sciences |
| Zdroj: | Journal of Zhejiang University-SCIENCE A. 22:165-181 |
| ISSN: | 1862-1775 1673-565X |
| DOI: | 10.1631/jzus.a2000130 |
| Popis: | Water curtain systems (WCSs) are key components for the operation of underground oil storage caverns (UOSCs) and their optimization and design are important areas of research. Based on the time series monitoring of the first large-scale underground water-sealed storage cavern project in China, and on finite element analysis, this study explores the optimum design criteria for WCSs in water-sealed oil caverns. It shows that the optimal hole spacing of the WCS for this underground storage cavern is 10 m in order to ensure seal effectiveness. When the WCS is designed with a 10-m horizontal hole spacing and a water curtain pressure (WCP) of 80 kPa, a water curtain hole (WCH) has an influence radius of approximately 25 m. The smaller the vertical distance is between a WCH and the main cavern, the greater the water inflow into the main cavern. The vertical hydraulic gradient criterion can be satisfied when this distance is 25 m. It shows that the optimal WCP is 70 kPa, which meets sealing requirements. |
| Databáze: | OpenAIRE |
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