四川盆地蓬莱地区灯影组四段超深层白云岩储集层特征及主控因素*
刘凯铭1,2, 王兴志1,2, 韦明洋1,2, 李阳1,2, 陈旺1,2, 王文之3, 李勇3, 马奎3

Reservoir characteristics and main controlling factors of ultra-deep dolomite in the 4th Member of Sinian Dengying Formation in Penglai area,Sichuan Basin
LIU Kaiming1,2, WANG Xingzhi1,2, WEI Mingyang1,2, LI Yang1,2, CHEN Wang1,2, WANG Wenzhi3, LI Yong3, MA Kui3
四川盆地蓬莱地区灯影组四段主要储集岩类型 a—叠层石白云岩,见明暗相间且平行的互层,PS7井,7240.89 m;b—叠层石白云岩,见明显波状起伏的明暗互层,PS2井,7797.52 m;c—叠层石白云岩,富藻层和富屑层间可见顺层格架孔,PS2井,7797.52 m,单偏光; d—叠层石白云岩,纹层平行,可见局部硅化,PS7井,7240.97 m,单偏光; e—凝块石白云岩,见花斑状构造,PS8井,7057.78 m;f—凝块石白云岩,见雪花状构造,DB1井,6404.82 m;g—凝块石白云岩,见孤立孔洞,PS106井,5860.30 m;h—凝块石白云岩,见蜂窝状孔洞,PS8井,7060.02 m;i—凝块石白云岩,溶蚀缝被白云石、沥青充填,PS8井,7049.27 m,单偏光; j—凝块石白云岩,孔洞被白云石、沥青半充填,PS8井,7053.46 m,单偏光; k—泡沫绵层白云岩,DB1井,6409.29 m;l—泡沫绵层白云岩,内部可见格架孔,PS7井,7240.10 m,单偏光; m—砂屑白云岩,见大量针孔发育,PS6井,7940.40 m;n—砂屑白云岩,粒间溶孔发育,被沥青半充填,PS5井,5547.31 m;o—砂屑白云岩,宏观上较为致密, PS7井,7239.85 m;p—砂屑白云岩,可见大量富含藻类的颗粒,PS7井,7239.49 m,单偏光