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| SEVERAL KEY PROBLEMS ABOUT CONTROL OF SOLUTION MINING FOR OIL/GAS STORAGE IN DEEP SALT MINE |
| LI Yinping1，SHI Xilin1，YANG Chunhe1，2，QU Dan?an2，3 |
(1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of
Sciences，Wuhan，Hubei 430071，China；2. Key Laboratory for Exploitation of Southwestern Resources and Environmental Disaster Control Engineering，Ministry of Education，Chongqing University，Chongqing 400044，China；3. West-to-East Gas Pipeline Company Gas Storage Project Department，PetroChina Company Limited，Jintan，Jiangsu 213200，China) |
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Abstract The projects of oil/gas storage in deep salt mine are being massively planned and constructed in China. It has been a technical problem to be solved urgently that how to realize safe and efficient leaching of storage cavern. Combining engineering practices and theoretical results，five key problems should be paid close attention to，i. e. typical distribution characteristics of salt mine in China；corrosion and mechanical property weakening of interbed in leaching environment；mechanism，failure mode and discrimination of interbed collapse；dynamic characteristics of tubing string and their influential factors；control technology of solution mining and its field application. By summarizing the main progresses in above problems，it is found that some major breakthroughs in mechanism of interbed collapse and control technology of solution mining have been made. Based on the breakthroughs，some engineering problems have been solved or explained. The results provide technological support for salt cavern storage. However，the researches are far from in-depth and comprehensive on corrosion property of different interbeds，dynamic instability model of leaching tubing under various factors，and laboratory simulation of cavern leaching design. Finally，several works that should be carried out further are listed.
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Received: 06 June 2012
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2012, Vol. 31 
