张福;黄艺;蓝宝锋;李龙;刘婷;刘睿;江定川;

• 1:贵州乌江能源集团有限责任公司
• 2:贵州省土地矿产资源储备局
• 3:西南石油大学地球科学与技术学院

摘要(Abstract)：

四川盆地以东的复杂构造变形带拥有巨大的页岩气资源潜力,但目前勘探开发不足。为了支撑复杂构造变形带的页岩气勘探开发,针对复杂构造变形带内正安地区五峰组-龙马溪组页岩钻井岩心,开展了矿物学、有机地球化学、岩石学分析测试,探讨了页岩储层特征及主控因素。正安地区五峰组-龙马溪组页岩储层石英质量分数高达60%～80%,以硅质页岩为主,脆性程度高。石英主要是无机成因,包括原生碎屑石英沉积和黏土矿物转化而成的次生石英。原生碎屑石英、层状黏土颗粒的压实脆裂增大了孔隙空间,但次生石英的沉淀、充填减小了矿物颗粒间的骨架孔隙。正安地区五峰组-龙马溪组页岩储层总w(TOC)高达5.8%,有机质中无定形腐泥组大于80%,沥青反射率介于2.6%～3.1%,有机质热解而成的有机孔显著增大了孔隙度,但有机孔隙后期遭受构造挤压变形,多坍塌成狭长的多边形。

关键词(KeyWords)： 有机孔;无机孔;复杂构造变形带;五峰组-龙马溪组页岩

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41702157);; 贵州省地勘基金项目(GZMC-ZG20192014-4)

作者(Author): 张福;黄艺;蓝宝锋;李龙;刘婷;刘睿;江定川;

Email:

DOI: 10.19509/j.cnki.dzkq.2021.0016

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