四川盆地及其周缘典型地区龙潭组页岩岩相划分对比及特征
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何燚,唐玄,单衍胜,刘光祥,谢皇长,马子杰
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Lithofacies division and comparison and characteristics of Longtan Formation shale in typical areas of Sichuan Basin and its surrounding
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Yi HE,Xuan TANG,Yan-sheng SHAN,Guang-xiang LIU,Huang-chang XIE,Zi-jie MA
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表3 M1井和DC1井龙潭组黏土矿物组成
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Table 3 Clay mineral composition of Longtan Formation in Wells M1 and DC1
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| 井号 | 编号 | 井深/m | 岩性 | 伊利石/% | 高岭石/% | 绿泥石/% | 伊/蒙混层/% | 绿/蒙混层/% | 伊/蒙混层比/% |
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| M1井 | M2 | 4 941.5 | 灰色灰质页岩 | 58 | 1 | / | 41 | / | 35 | | M5 | 4 944.4 | 灰黑色炭质页岩 | 58 | 1 | 1 | 40 | / | 35 | | M9 | 4 949.2 | 灰黑色炭质页岩 | 62 | / | / | 38 | / | 30 | | M11 | 4 951.2 | 灰黑色炭质页岩 | 55 | 1 | 1 | 43 | / | 35 | | M15 | 4 955.7 | 灰色泥质页岩 | 56 | / | / | 44 | / | 30 | | M16 | 4 956.8 | 灰黑色页岩 | 40 | / | 1 | 59 | / | 30 | | M19 | 4 959.4 | 灰黑色页岩 | 2 | 2 | 7 | 5 | 84 | 35 | | M20 | 4 960.4 | 灰黑色页岩 | 19 | 3 | 4 | 74 | / | 35 | | M21 | 4 962.3 | 灰黑色含砂页岩 | 25 | 6 | 14 | 53 | 2 | 35 | | DC1井 | D1 | 632.6 | 灰黑色含砂页岩 | 9 | 38 | 33 | 20 | / | 10 | | D2 | 671 | 煤 | 29 | 38 | 32 | / | / | / | | D4 | 723.2 | 黑色炭质页岩 | 3 | 43 | 16 | 38 | / | 10 | | D6 | 854.1 | 灰黑色粉砂质页岩 | 4 | 6 | 21 | 69 | / | 25 | | D7 | 862.6 | 黑色炭质页岩 | 4 | 5 | 15 | 76 | / | 25 | | D8 | 891.5 | 黑色炭质页岩 | 3 | 9 | 13 | 75 | / | 25 | | D9 | 920.7 | 灰黑色粉砂质页岩 | 1 | 15 | 35 | 49 | / | 25 | | D10 | 957.8 | 黑色炭质页岩 | / | 64 | 36 | / | / | / |
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