四川盆地东部涪陵地区自流井组陆相页岩储层微裂缝发育特征及其对页岩气富集的意义

王鹏威,张亚雄,刘忠宝,陈筱,李飞,郝景宇,王濡岳

Microfracture development at Ziliujing lacustrine shale reservoir and its significance for shale-gas enrichment at Fuling area in eastern Sichuan Basin

Pengwei WANG,Yaxiong ZHANG,Zhongbao LIU,Xiao CHEN,Fei LI,Jingyu HAO,Ruyue WANG

图5 川东地区下侏罗统陆相页岩有机质裂解缝 （a）FY1井，J1d，2 705 m，含炭质页岩，有机质内部发育微裂缝；（b）FY1井，J1da，2 600.5 m，灰黑色页岩夹灰质条带，有机质内部微裂缝与粒缘缝连通；（c）FY1井，J1da，2 582.5 m，页岩夹灰质纹层，有机质内可见微裂缝；（d）XL101井，J1da，2 150.5 m，灰黑色页岩夹灰质纹层；（e）XL101井，J1da，2 150.5 m，灰黑色页岩夹灰质纹层，微裂缝宽度最大416.7 nm；（f）XL101井，J1da，2 150.5 m，灰黑色含介壳页岩夹灰质纹层

Fig.5 Fractures derived from organic matter cracking in Lower Jurassic lacustrine shale in eastern Sichuan Basin