【摘要】 以巢湖地区龙潭组过渡相煤系页岩储层为例,通过扫描电镜与高压压汞、低温氮吸附等实验技术,探究龙潭组页岩储层纳米级孔隙、微裂隙的发育特征,并讨论其影响因素。实验结果表明:储层主要储集空间是黏土矿物孔隙与有机孔隙;孔径分布复杂,100 nm以下孔隙贡献了主要比表面积与体积分布;孔隙形态复杂,兼具多种孔隙形态特征。更多还原

【Abstract】 Using samples from coal bearing strata Longtan formation in Chaohu area, the development characteristics of nanopores and micro-fractures were studied based on experimental methods including FE-SEM, mercury injection and low temperature nitrogen gas adsorption. The major reservoir space of shale reservoir in Longtan formation are the clay mineral pores and organic pores with strong capability of adsorption.The PSDs of reservoir are complex and pores smaller than 100 nm contributed to the major specific surface area and pore volume. Pore shape is complex with various morphological characteristics.更多还原