石油实验地质2018，Vol.40Issue(2)：185-192,199,9.DOI:10.11781/sysydz201802185
黔北绥阳地区五峰—龙马溪组富有机质泥岩特征及意义
Characteristics of organic-rich shale in Wufeng-Longmaxi formations in Suiyang area of northern Guizhou and its implication to shale gas
摘要
Abstract
The organic-rich shale in the Wufeng-Longmaxi formations in the northern Guizhou was deposited in tide flat,shallow or deep continental seas, respectively, with an increasing thickness from north to south. The black shale in the Jianba section in the Suiyang area of the northern Guizhou has a thickness of 33.1 m,which is obviously thicker than the other sections even though they have similar sedimentary sequences, indicating for a sedimentary depression in this area. Organic carbon content in the Wufeng-Longmaxi formations ranges from 0.53% to 6.04%,with an average value of 3.05%. The Tmaxis generally higher than 500℃. The Roranges from 1.93% to 2.19%,with an average value of 2.07%,indicating for an over-mature stage. Brittle mineral content is high across the section,accounting for 70.5% in average. The discovery of the Jianba section sheds new light on shale gas exploration in the northern Guizhou.关键词
富有机质泥岩/五峰—龙马溪组/绥阳地区/黔北Key words
organic⁃rich mudstone/Wufeng-Longmaxi formations/Suiyang area/northern Guizhou分类
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康建威,闫剑飞,余谦,田景春,门玉澎,孙媛媛..黔北绥阳地区五峰—龙马溪组富有机质泥岩特征及意义[J].石油实验地质,2018,40(2):185-192,199,9.基金项目
中国地质调查局"四川盆地下古生界海相页岩气基础地质调查"(DD20160176)资助. （DD20160176）
