›› 2012, Vol. 33 ›› Issue (3): 681-686.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Preliminary study of dynamic characteristics of tubing string for solution mining of oil/gas storage salt caverns

LI Yin-ping1, YANG Chun-he1, 2, QU Dan-an2, YANG Chang-lai3, SHI Xi-lin1   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Key Laboratory for Exploitation of Southwestern Resources & Environmental Disaster Control Engineering of Ministry of Education, Chongqing University, Chongqing 400044, China; 3. Natural Gas Branch Company, China Petroleum Chemical Industry Co., Ltd., Beijing 100120, China
  • Received:2011-10-24 Online:2012-03-10 Published:2012-03-12

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Abstract: The dynamic characteristics of the tubing string for solution mining of oil/gas storage caverns are studied preliminarily. It is implied that the buckling of tubing string will induce damage and failure of tubing. Through the preliminary study of vibration characteristics of tubing string without space constraint, the critical velocity expression of tubing string in an ideal condition is obtained. Computation analysis shows that the tubing string without space constraint will generally suffer buckling due to fluid-solid coupling vibration; and the inner casing will reach buckling prior to the out casing generally. Considering the importance and complexity of this problem, the influences on the critical velocity analysis mechanical model of conditions, axial force, fluid pressure, solution mining cycling method, horizontal constrains, and the coupling of axial liquid hammer and transverse vibration, are discussed roughly. Finally, considering space constraint, some research advices on the all-sided analysis of the tubing string dynamic characteristics are proposed.

Key words: oil/gas storage salt cavern, tubing string for solution mining, dynamic buckling, critical velocity, constraint

CLC Number: 

  • TU 443
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