| 川东南—鄂西渝东地区下古生界页岩气勘探前景 |
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| 引用本文： | 黄文明,刘树根,马文辛,王国芝,曾祥亮,王 佳.川东南—鄂西渝东地区下古生界页岩气勘探前景[J].地质通报,2011,30(203):364-371. |
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| 作者姓名： | 黄文明 刘树根 马文辛 王国芝 曾祥亮 王 佳 |
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| 作者单位： | 成都理工大学/油气藏地质及开发工程国家重点实验室， 四川 成都 610059 |
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| 摘 要： | 中上扬子地台发育2套重要的海相深灰色—黑色页岩，分别为下寒武统牛蹄塘组和上奥陶统五峰组—下志留统龙马溪组，主要由富含黄铁矿、有机质或生物化石的黑色炭质页岩组成，厚度大、分布广。牛蹄塘组页岩有机质演化程度高、埋藏相对较深、钻井无天然气显示； 龙马溪组页岩有机质演化程度相对中等、埋藏深度适度、钻井天然气显示丰度高，特别是志留系其它粉砂岩层段可产工业性气流。因此，下志留统页岩更有利于研究区页岩气的勘探和开发，更加适合作为中国南方页岩气战略先导区的重点目标勘探层位。总体上，两套页岩在川东南—鄂西渝东地区出露范围广，有利于针对页岩展开相关研究，特别是背斜和向斜的翼部区是页岩气勘探最为有利的地区。
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| 关 键 词： | 下古生界 页岩气 勘探前景 川东南 鄂西渝东 |
Shale gas exploration prospect of Lower Paleozoic in southeastern Sichuan and western Hubei-eastern Chongqing areas, China |
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| HUANG Wen-ming,LIU Shu-gen,MA Wen-xin,WANG Guo-zhi,ZENG Xiang-liang,WANG Jia.Shale gas exploration prospect of Lower Paleozoic in southeastern Sichuan and western Hubei-eastern Chongqing areas, China[J].Geologcal Bulletin OF China,2011,30(203):364-371. |
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| Authors: | HUANG Wen-ming LIU Shu-gen MA Wen-xin WANG Guo-zhi ZENG Xiang-liang WANG Jia |
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| Institution: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation/Chengdu University of Technology, Chengdu 610059, Sichuan, China |
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| Abstract: | Lower Cambrian Niutitang Formation and Upper Ordovician Wufeng Formation-Lower Silurain Longmaxi Formation are two sets of transgressive shale, featured by rich in pyrite, organic and fossils in black shale. The thickness of the two shales is large and distribution is widespread. The organic evolution of Niutitang Formation is high and buried depth is deeper than that of Longmaxi Formation. It is clear that no gas shows in Lower Cambrian shale but abundant gas shows in Lower Silurian, particularly, industrial gas is found in some siltstones. Based on the above study, Lower Silurian is more favorable to research and develop of shale gas exploration, and is more suitable to look as target stratum for shale gas exploration in southeastern China strategic objectives pilot area. In a word, the exposed area of two sets of shale in the study area is very wide, and is very helpful to start against shale research, especially in the anticline and syncline wings. |
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| Keywords: | Lower Paleozoic shale gas exploration prospects southeastern Sichuan basin western Hubei and eastern Chongqing areas |
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