中扬子宜昌地区沉积—构造演化与寒武系页岩气富集规律
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罗胜元,陈孝红,岳勇,李培军,蔡全升,杨睿之
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Analysis of sedimentary-tectonic evolution characteristics and shale gas enrichment in Yichang area, Middle Yangtze
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Sheng-yuan LUO,Xiao-hong CHEN,Yong YUE,Pei-jun LI,Quan-sheng CAI,Rui-zhi YANG
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表2 宜昌地区典型井水井沱组沉积厚度、页岩地球化学及含气特征特征
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Table 2 Comparison of sedimentary thickness between typical wells, shale geochemical characteristics and gas content in Yichang area
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| 井号 | 古地理 位置 | 灯影组厚度 /m | 水井沱组厚度 /m | 连续页岩厚度 /m | TOC>2% 页岩厚度/ m | 页岩TOC/ % | 页岩RO/ % | 现场解析含气量 /（m3/t） |
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| 宜探2 | 台地 | 523.0 | 55.0 | 38.0 | - | - | - | - | | 宜页3 | 台内洼陷 | - | 84.0 | 48.0 | 15 | (0.18~4.77)/1.34 | - | (0.20~0.94)/0.33 | | 宜参1 | 台缘隆起 | 617.0 | 9.0 | 3.0 | - | < 0.5 | - | - | | 宜地3 | 台缘隆起 | 624.4 | 8.6 | 4.05 | - | < 0.5 | - | - | | 宜参3 | 台缘隆起 | 662.8 | 5.2 | 2.65 | - | < 0.5 | - | - | | 宜地5 | 台缘隆起 | 615.3 | 18.0 | 13.99 | - | < 0.5 | - | - | | 宜参2 | 台缘斜坡 | 429 | 62.2 | 31.98 | 13.7 | (0.1~7.91)/1.91 | - | - | | 秭地2 | 台缘斜坡 | 420.8 | 79.6 | 63.3 | 22.66 | (0.25~5.02)/2.34 | (1.97~2.59)/2.33 | (0.23~4.45)/2.15 | | 宜地2 | 台缘斜坡 | - | 101.6 | 72.32 | 28.0 | (0.52~5.96)/2.26 | (2.26~2.37)/2.35 | (0.17~5.58)/2.24 | | 宜页1 | 台缘斜坡 | 235.0 | 136.1 | 86.0 | 36.7 | (0.43~10.45)/2.7 | (2.18~2.30)/2.26 | (0.58~5.48)/2.05 | | 秭地1 | 陆棚 | 247.72 | >290 | 104.81 | 44.1 | (0.53~8.72)/2.14 | (1.43~1.79)/1.61 | (0.23~1.05)/0.59 | | 阳页1 | 陆棚 | 176.5 | 469.5 | 141.0 | 41 | (1.0~5.5)/2.2 | (2.5~3.7)/2.7 | (0.32~4.48)/2.30 |
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