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| Motion of insoluble subsidence during leaching sump for salt cavern storage |
| LI Yinping1，2，SHI Xilin1，LIU Wei1，2，WANG Bingwu1，MA Xuqiang1，YANG Chunhe1，2 |
| (1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. State Key Laboratory of Coal Mine Disaster Dynamics and Control，Chongqing University，Chongqing 400030，China) |
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Abstract During the process of salt cavern leaching for oil/gas storage，the motion and subsidence of the insoluble particles have great influence on the shape of insoluble substance sump. The grain size distribution was analyzed and stacking experiments were carried to the insoluble particles of typical salt rock. Theoretical research was conducted on the moving and subsidence properties of the insoluble particles subjected to the action of flow field in cavern making. The subsiding velocity of the insoluble subsidence in brine field was established. The influence of the flow field on the moving principle of the insoluble particles in the construction phase of groove and the induced influence on the settlement pit were the focus of the research. The theoretical achievements were written into the software of Salt Cavern Builder. The results of modelling with the software showed that the shape evolution of the cavern bottom was more suitable for the real engineering conditions.
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2016, Vol. 35 
