0 引言
1 研究区概况
2 深层页岩气地质特征
2.1 构造特征
2.2 沉积地层特征
2.3 岩石矿物组成特征
2.4 有机地球化学特征
2.5 储集物性特征
图5 五峰组—龙马溪组一段页岩孔隙体积与比表面积关系Fig.5 Relationship between pore volume and specific surface area of Wufeng Formation-the first member of Longmaxi Formation |
图6 五峰组—龙马溪组一段页岩TOC与孔隙体积、比表面积关系Fig.6 Relationship between TOC and pore volume, specific surface area of Wufeng Formation-the first member of Longmaxi Formation |
图8 NY1井五峰组—龙马溪组一段页岩孔隙类型及发育特征(a)4 409.19 m,①号小层,有机质孔隙发育,孔隙直径100~400 nm,呈椭圆状、狭长不规则状;(b)4 363.83 m,⑥号小层,有机质孔隙较发育,孔隙边缘圆滑,呈椭圆状—圆状;(c)4 323.70 m,⑧号小层,黏土矿物晶间孔;(d)4 336.75 m,⑧号小层,黄铁矿晶间孔;(e)4 397.02 m,③号小层,粒内溶蚀孔;(f)4 363.83 m,⑥号小层,微裂缝,宽度大于1 μm,未被充填 Fig.8 Pore types and development characteristics of Wufeng Formation-the first member of Longmaxi Formation in Well NY1 |