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地质力学学报:2020,26(6):852-871
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下扬子页岩气地质调查新进展及突破难点思考
(1.中国地质调查局南京地质调查中心, 江苏 南京 210016;2.安徽省勘查技术院, 安徽 合肥 230001)
New progress and breakthrough difficulties on shale gas geological survey in the lower Yangtze area
(1.Nanjing Geological Survey Center, China Geological Survey, Nanjing 210016, Jiangsu, China;2.Geological Exploration Technology Institute of Anhui Province, Hefei 230001, Anhui, China)
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投稿时间:2020-08-25    修订日期:2020-10-20
中文摘要: 围绕长江经济带清洁能源体系建设对页岩气突破的重大需求,在充分整合长江下游地区以往地质和物探资料的基础上,系统开展了1:25万页岩气基础地质调查,在苏皖南沿江坳陷带、江西萍乐-浙江钱塘坳陷带、南华北地区"两带一区"实施了10口页岩气调查井,基本查明了主要工作区古生界二叠系、志留系、奥陶系、寒武系富有机质泥页岩成藏地质条件,有9口井分别在三叠、二叠、志留、寒武系4套层系获得页岩气、致密砂岩气、煤层气、页岩油、裂缝性砂岩油、裂缝性灰岩油"三气三油"的重要新发现,深化了二叠系和志留系成藏地质认识,探索了三叠系、奥陶系和寒武系含油气性,开辟了新区新层系,揭示了下扬子及南华北中—古生界油气页岩气资源勘查潜力。圈定了10个远景区,初步评价了9个远景区主要目标层的远景资源量,解决了资源前景问题;讨论了制约下扬子页岩气调查突破的卡脖子问题,提出了下一步突破的方向。
Abstract:Shale gas breakthroughs are in urgent need in the construction of clean energy system in the Yangtze River Economic Belt. The previous geological and geophysical data in the lower Yangtze area were fully integrated, and a 1:250000 shale gas geological survey was systematically carried out in the lower Yangtze area. Ten shale gas wells were drilled in the "two belts and one zone", which includes the depression belt along the Yangtze River in the southern regions of Jiangsu and Anhui, the Jiangxi Pingle-Zhejiang Qiantang depression belt, and the southern North China zone. The geological accumulation conditions of organic-rich shales in the Permian, Silurian, Ordovician and Cambrian were basically identified. Among those formations, "three types of gas and three types of oil", including shale gas, tight sandstone gas, coal bed gas, shale oil, fractured sandstone oil and fractured limestone oil, were discovered from nine wells. The great discoveries deepened our understanding of Permian and Silurian hydrocarbon accumulations. The hydrocarbon-bearing properties of the Triassic, Ordovician and Cambrian were explored. Meanwhile, the new zones and layers were established and the potential for hydrocarbon and shale gas exploration were revealed in the lower Yangtze and southern North China in the Meso-Palaeozoic. In the research, ten shale gas prospecting areas were delineated. The preliminary evaluation of the prospective resources of the main target layers in nine shale gas prospecting areas was completed and the problems of resource prospects were solved. At last the bottlenecks in the lower Yangtze shale gas exploration were discussed and the direction of breakthrough was put forward.
文章编号:     中图分类号:P553    文献标志码:
基金项目:中国地质调查局地质调查项目(DD20160180,DD20190083,DD20190281)
引用文本:
郑红军,周道容,殷启春,等,2020.下扬子页岩气地质调查新进展及突破难点思考[J].地质力学学报,26(6):852-871.DOI:10.12090/j.issn.1006-6616.2020.26.06.067
ZHENG Hongjun,ZHOU Daorong,YIN Qichun,et al,2020.New progress and breakthrough difficulties on shale gas geological survey in the lower Yangtze area[J].Journal of Geomechanics,26(6):852-871.DOI:10.12090/j.issn.1006-6616.2020.26.06.067

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