现代地质Issue(1)：181-191,11.
滇黔桂盆地泥盆系页岩气成藏条件及资源潜力分析
Shale Gas Accumulation Condition and Resource Potential Analysis of Devonian in Dian-Qian-Gui Basin
摘要
Abstract
Based on the outcrop observation,profile survey and sample analysis of Devonian dark shale,this paper studied the accumulation condition of Devonian shale gas in Dian-Qian-Gui Basin.The results show that two sets of dark shales of intraplatform depression facies were deposited in Dian-Qian-Gui Basin during the Early to Middle Devonian,and the single layer thickness of Devonian shale is 10 -55 m;the accumulative thickness is generally between 100 m and 450 m.The TOC values are mainly in the range of 1.0% to 2.5%,and the or-ganic matter type is Ⅰ -Ⅱ1 ,and the vitrinite reflectance values indicate high to over mature thermal evolution stages.As an effective reservoir,the porosity and permeability of Devonian shale in Dian-Qian-Gui Basin are similar to those of Jiulaodong Formation in well Wei-201,and various reservoir space types well developed in the shale,and the content of brittle minerals is averagely up to 67%.The gas preservation conditions of southwest-ern Qiannan Depression and middle-west Guizhong Depression are relatively better because of the relative flat strata,low fault density and erosion thickness,and thrusting and transpressional faults.Overall considering of the dark shale thickness,buried depth,organic matter content,thermal evolution degree and preservation con-dition,it can be predicted that the favorable intervals of Devonian shale gas are Tangding Formation and Luofu Formation,and the favorable areas mainly distribute in Tian’e-Nandan-Hechi area and Luzhai-Laibin-Heshan-Dahua area of middle Guizhong Depression.By using the analogy method of geological resource abundance,it can be calculated that the geological resources of Devonian shale gas is 0.66 ×10 12 m3 to 1.09 ×10 12 m3 .关键词
页岩气/资源潜力/泥盆系/滇黔桂盆地Key words
shale gas/resource potential/Devonian/Dian-Qian-Gui Basin分类
能源科技引用本文复制引用
孟江辉,潘仁芳,陈浩,唐小玲..滇黔桂盆地泥盆系页岩气成藏条件及资源潜力分析[J].现代地质,2016,(1):181-191,11.基金项目
国家自然科学基金项目“中扬子区下古生界页岩气关键评价指标限定值研究”（41402114）；中国博士后科学基金项目“我国西南古生界高－过热演化条件下页岩气评价标准研究”（2013M530342）。 （）
