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Geological characteristics and high production control factors of shale gas reservoirs in Silurian Longmaxi Formation, southern Sichuan Basin, SW China
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MA Xinhua,XIE Jun,YONG Rui,ZHU Yiqing
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Table 2 Longmaxi shale reservoir parameters at the interval of 3500-4500 m and typical wells in Changning and Weiyuan.
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| Well name | Thickness of grades-I+II reservoirs/m | TOC/% | Porosity/% | Brittle mineral content/% | | Well N1 | 26.1 | 4.1 | 7.4 | 71.0 | | Well WD2 | 39.3 | 3.3 | 6.5 | 66.0 | | Well WD4 | 42.7 | 3.6 | 7.9 | 56.0 | | Average value for all wells at 3500-4500 m | 58.0 | 3.1 | 4.8 | 55.9 |
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