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

表2 川东地区下侏罗统陆相页岩样品面孔率及裂缝面孔率统计

Table 2 Plane porosity of pores and fractures at Lower Jurassic lacustrine shale samples in eastern Sichuan Basin

井名 深度 样品面孔率 裂缝面孔率 裂缝贡献率 /m /% /% /% FY A 2 528.5 4.09 1.18 28.89 FY A 2 600.5 3.37 0.62 18.55 FY A 2 629.6 2.02 0.56 27.64 FY A 2 705.0 4.54 1.03 22.69 FY A 2 729.0 3.11 0.85 27.51 XL A 2 144.0 4.00 0.68 17.02 XL A 2 150.5 1.44 0.37 25.36 XL A 2 159.0 5.21 1.82 34.94 XLA 2 268.0 3.68 0.93 25.27