Sweet spot evaluation and exploration practice of lacustrine shale oil of the second member of Kongdian Formation in Cangdong sag, Bohai Bay Basin

HAN Wenzhong,ZHAO Xianzheng,JIN Fengming,PU Xiugang,CHEN Shiyue,MU Liangang,ZHANG Wei,SHI Zhannan,WANG Hu

Fig. 3. Microscopic pore and lamina features in shale samples from Kong 2 Member of Well G108-8 in Cangdong sag. (a) 2985 m, hybrid shale, with intergranular pores between inorganic mineral grains; (b) 3110 m, inorganic mineral laminae and organic matter laminae in micron scale; (c) 3315 m, alternate blue-white oily bitumen and dark organic matter and clay laminae.