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| New screening method for reservoir by C02 injection miscible flooding |
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LEI Huai-yan1,2,GONG Cheng-lin1,GUAN Bao-cong1
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(1.State Key Laboratory of Marine Environmental Science, College of Oceanography and Environmental Science of Xiamen University,Xiamen 361005 t Fujian Province, China ;2. Lanzhou Research Center of Petroleum Resources，Institute of Geology and Geophysics, Chinese Academy ofSciences，Lanzhou 730000, China)
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| Abstract: |
| C02 injection miscible flooding is an important method for enhanced oil recovery ( EOR). It is important to screen out the potential reservoirs for using the method. Now, there aren't uniform screening indexes and method about screening out C02 injection miscible flooding reservoirs. Based on the analysis and researches of the C02 injection miscible flooding reservoirs, 12 indexes affecting C02 injection miscible flooding results were picked out. By the method of probability statistics, the assessment criterions were brought forward. And combining with fuzzy optimum and fuzzy analytical hierarchy process (FAHP) , the interval number screening model for C02 injection miscible flooding reservoirs was successfully established. This screening method was used to screen and assess six classical candidate reservoirs about C02 injection miscible flooding. The results show that the method could perfectly evaluate and screen the potential of C02 injection of the candidate reservoir. |
| Key words: C02 injection miscible flooding screening index assessment criterion interval number screening model |
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