›› 2011, Vol. 32 ›› Issue (6): 1787-1794.

• Geotechnical Engineering • Previous Articles     Next Articles

Risk assessment of salt cavern oil/gas storage based on accident statistical analysis

JING Wen-jun1, YANG Chun-he1, 2, CHEN Feng1   

  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 and Environmental Disaster Control Engineering, Ministry of Education，Chongqing University, Chongqing 400044, China
  • Received:2010-04-21 Online:2011-06-10 Published:2011-06-21

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2032

Abstract: Based on the statistics of salt cavern oil/gas storage accidents abroad, a study of salt cavern oil/gas storage risk assessment is conducted using risk matrix analysis in order to provide statistical proof for the risk management during construction and operation. This thesis analyzes the salt cavern oil/gas storage’s probability of tremendous accident, risk grade, accident types and the main accident causes. Research shows that the accident probability of a single salt cavern during construction and operation is 1.51%, and the general risk grade is between acceptable and unacceptable, so the related departments should pay more attention on its risk prevention mechanism; three main types of the tremendous accidents are oil and gas leakage, cavern failure and earth surface subsidence respectively; different from other two types whose risk grades are permissible, the risk grade of oil and gas leakage is acceptable, which calls for special attention; the most important causes of these accidents are casing failure, excessive creep and human error, and also overground setting failure and caprock breakage.

Key words: salt cavern oil/gas storage, accident statistical analysis, risk assessment, risk matrix analysis

CLC Number: 

  • TU 443
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