秦川;余谦;刘伟;闫剑飞;张海全;门玉澎;

• 1:中国地质调查局成都地质调查中心

• 2:国土资源部沉积盆地与油气资源重点实验室

摘要(Abstract)：

利用黏土矿物及全岩X线衍射分析、有机碳质量分数和显微组分、镜质体反射率、气体法—脉冲法孔隙度和渗透率测定、核磁共振孔隙度、氩离子抛光扫描电镜等方法,测试黔北地区下志留统龙马溪组钻井和剖面富有机质泥岩段岩石样品,研究其储层特征。结果表明,龙马溪组富有机质泥岩岩石类型主要为含粉砂炭质泥岩、粉砂质炭质泥岩,矿物组分中黏土矿物平均质量分数为23.5%,脆性矿物以石英为主(占43.9%)。干酪根类型以I型为主,有机碳质量分数介于2.0%~6.0%,有机质成熟度介于1.51%~2.58%。富有机质泥岩总孔隙度介于2.7%~9.9%,渗透率较低,一般为(0.001~5.960)×10-4μm2。微观储集空间以微裂缝、少量残余粒间孔为主。黔北地区龙马溪组富有机质泥岩具有脆性矿物质量分数高、黏土矿物质量分数低、有机质丰度和有机质成熟度高、低孔低渗的储层特征,具备良好的页岩气勘探潜力。

关键词(KeyWords)：富有机质泥岩;储层特征;下志留统;龙马溪组;黔北地区

Abstract:

Keywords:

基金项目(Foundation):国土资源部油气资源战略研究中心项目(2009GYXQ15-03);; 贵州省地质勘查基金项目(GZSYYQZYDC2012-002);; 中国地质调查局基础性公益性地质矿产调查项目(DD20160176)

作者(Author):秦川;余谦;刘伟;闫剑飞;张海全;门玉澎;

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