›› 2006, Vol. 27 ›› Issue (7): 1043-1048.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Influence of CO2-induced swelling on casing stability in CO2-ECBM

BAI Bing, LI Xiao-chun, LIU Yan-feng, ZHANG Yong   

  1. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2005-07-20 Online:2006-07-10 Published:2013-11-19

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Abstract: The large amount of CO2 emission as a result of excessively relying on the fossil energy leads to global warming. CO2-ECBM(CO2 enhanced coal-bed methane) is an attractive way of enhancing CH4 recovery and sequestering CO2. When CO2 replaces CH4 in the coalbeds in ECBM(, it will generate dramatic swelling. This paper addresses the influence of the swelling on the casing stability. Consistent results are gained using the analytic model proposed by the authors and ABAQUS simulator. Swelling of coal can bring dramatic impact on the casing stability. Based on the analysis of the impact factors of casing stress, it can be concluded that the casing stress can be obviously weakened by promoting the wall thickness of the casing or by using the filling material of very high Poisson ratio and Young’s modulus

Key words: CO2-ECBM, coal swelling, adsorption, casing stability

CLC Number: 

  • TU 443
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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