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Experiments on nitrogen assisted gravity drainage in fractured-vuggy reservoirs
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WANG Jing,JI Zemin,LIU Huiqing,HUANG Yitao,WANG Yishuang,PU Yulong
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Table 1 Parameters of vug size and fracture aperture in the models.
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| Model | Fracture aperture/mm | Vug diameter/mm | Fracture and vug depth/mm | Pore
volume/
mL | | Big | Medium | Small | Big | Medium | Small | | Model Ⅰ | 1.0 | | | 15.0 | 10.0 | 5.0 | 3.5 | 21.5 | | Model Ⅱ | 2.0 | 1.5 | 1.0 | 15.0 | 10.0 | 5.0 | 3.5 | 24.0 | | Model Ⅲ | 1.2 | 0.9 | 0.6 | 15.0 | 10.0 | 5.0 | 2.5 | 15.0 |
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