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Nuclear magnetic resonance experimental study of CO2 injection to enhance shale oil recovery
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LANG Dongjiang,LUN Zengmin,LYU Chengyuan,WANG Haitao,ZHAO Qingmin,SHENG Han
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Table 7. The proportions of oil recovered from pores of different sizes to the total oil recovered at the action time of 40 h.
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| Sample No. | Total recovery degree/% | The proportions of oil recovered from pores of different sizes to the total oil recovered/% | | 14-100 nm | 100-664 nm | Above 664 nm | | 5-18-27-4 | 22.5 | 60.0 | 11.5 | 28.5 | | 5-18-27-1 | 25.3 | 55.0 | 23.3 | 21.7 |
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