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Grading evaluation and prediction of fracture-cavity reservoirs in Cambrian Longwangmiao Formation of Moxi area, Sichuan Basin, SW China
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WANG Bei,LIU Xiangjun,SIMA Liqiang
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Table 2 Grading evaluation of porosity and permeability of gas reservoir in Longwangmiao Formation of Moxi area.
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| Reservoir space grade | Porosity/% | Permeability/10-3 μm2 | Average vertical thickness of Reservoir/m | Testing production/104 m3 | | Grade I | >7 | >5.0 | 34-40 | >100 | | Grade II | 4-7 | 0.5-5.0 | 20-34 | 30-100 | | Grade III | 2-4 | 0.05-0.5 | 10-20 | 3-30 | | Grade IV | <2 | <0.05 | <10 | <3 |
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