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| Temperature-pressure field coupling calculation model considering phase behavior change in C02 injection well borehole |
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WU Xiao-dong1,WANG Qing1,HE Yan-feng2
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(1.MOE Key Laboratory of Petroleum Engineering in China University of Petroleum, Beijing 102249, China;2. College of Mechanical and Energy Engineering, Jiangsu Polytechnic University, Changzhou 213016, China)
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| Abstract: |
| Based on the analysis and comparison for four classic equations of slate of EXP-RK，SRK，PR，PT, a combinational method of PR-EXP was given. The accuracy of PR-EXP method is higher than that of PR and EXP-RK using in single. Based on the theories of heat transfer and vertical conduit flow and associated with the method of PR-EXP, a pressure-tem-perature coupling calculation model was developed. The coupling model was applied to well H75-29-7 of Jilin Oilfield, and the computing data agree well with the field testing data, which indicates the accuracy of the new method. |
| Key words: gas injection carbon dioxide equation of slate phase behavior temperature field pressure field |
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