石油实验地质2019，Vol.41Issue(1)：10-15,6.DOI:10.11781/sysydz201901010
黔西地区打屋坝组富有机质页岩地球化学特征及其意义
Geochemical characteristics of organic-rich shale in the Dawuba Formation, western Guizhou Province
摘要
Abstract
Consideration of the organic-rich shale of the Upper Paleozoic in the southern part of China has been stimulated by the advancement of shale gas exploration and development in China. The organic shale section of the Lower Carboniferous Dawuba Formation in the western part of Guizhou Province, which is widely distributed and thick, is one of the main targets of Guizhou shale gas exploration. In the process of shale gas exploration, the organic matter abundance, maturity and kerogen type of organic-rich shale are the main parameters of shale gas evaluation. In this paper, these three properties were determined on organic shale outcrop samples of the Dawuba Formation and combined with previous data, the organic geochemical characteristics of the Dawuba Formation have been described. The TOC content of organic-rich shale in the Dawuba Formation in the western Guizhou is generally> 1％, and most samples are in the range of 1％-3％. The kerogen in the Dawuba Formation is mainly of type Ⅱ2 and type Ⅲ, and in some parts type Ⅱ1 is present. Ro is generally> 0.6％, mostly distributed in the range of 1.3％-3.0％, which means they are high maturity to over-mature. The regional data show that the organic geochemical properties and the shale gas exploration potential of the Dawuba Formation are better in Liupanshui Shuicheng and Pu'an-Qinglong areas.关键词
有机地球化学/富有机质页岩/打屋坝组/下石炭统/贵州西部Key words
organic geochemistry/organic-rich shale/Dawuba Formation/Lower Carboniferous/western Guizhou Province分类
能源科技引用本文复制引用
陈榕,苑坤,张子亚,徐秋枫,卢树藩,贺敬博..黔西地区打屋坝组富有机质页岩地球化学特征及其意义[J].石油实验地质,2019,41(1):10-15,6.基金项目
"十三五"国家科技重大专项"页岩气资源潜力评价方法与勘查技术攻关"(2016ZX05034) （2016ZX05034）
中国地质调查局项目(DD20160196,DD20160178)联合资助 （DD20160196,DD20160178）
