中国陆相湖盆碳酸盐岩储集层特征及其成藏条件

杜江民, 龙鹏宇, 杨鹏, 丁强, 胡秀银, 李伟, 柏杨, 盛军

Characteristics of Carbonate Reservoir and Its Forming Conditions in Continental Lake Basin of China

Jiangmin Du, Pengyu Long, Peng Yang, Qiang Ding, Xiuyin Hu, Wei Li, Yang Bai, Jun Sheng

图7 银额盆地哈日凹陷白垩系泥质白云岩微观孔隙特征与含油性 （a）YH2井，1 305.35 m，巴音戈壁组，白云石与陆源碎屑混合堆积，扫描电镜照片；（b）YH2井，1 062.30 m，巴音戈壁组，白云石晶间孔，扫描电镜照片；（c）YH3井，468.17 m，银根组，白云石晶间孔中含油，偏光显微镜照片；（d）YH3井，547.96 m，银根组，白云石晶间孔中含油，见裂缝，偏光显微镜照片；（e）HC1井，3 077.74 m，巴音戈壁组，微裂缝中含油，偏光显微镜照片；（f）YH3井，468.17 m，银根组，层间缝发育，白云石含量较多，右半部分为铁氰化钾和茜素红联合染色，偏光显微镜照片；（g）YH3井，468.17 m，层间缝发育，白云石含量较多，偏光显微镜照片；（h）YH3井，547.96 m，银根组，白云质泥岩层间缝发育，扫描电镜照片

Fig. 7 Micropore characteristics and oil-bearing properties of Cretaceous argillaceous dolomite in Hari Sag of Yine Basin (a) Well YH2, 1 305.35 m, Bayingobi formation, dolomite and terrigenous debris mixed accumulation, SEM photo; (b) Well YH2, 1 062.30 m, Bayingobi formation, dolomite intergranular pore, SEM photo; (c) Well YH3, 468.17 m, Yingen formation, oil in dolomite intergranular pore, polarized microscope photo; (d) Well YH3, 547.96 m, Yingen formation, dolomite intergranular pore oil bearing, see fracture, polarizing microscope photo; (e) Well HC1, 3 077.74 m, Bayingobi formation, oil bearing in micro fracture, polarizing microscope photo; (f) Well YH3, 468.17 m, Yingen formation, interlayer fracture development, dolomite content is more, the right half is joint dyeing of potassium ferricyanide and Alizarin red, polarizing microscope photo; (g) Well YH3, 468.17 m, interlayer fracture development, more dolomite, polarizing microscope photo; (h) Well YH3, 547.96 m, Yingen formation dolomitic mudstone interlayer fracture development, SEM photo