Multi-source genesis of continental carbonate-rich fine-grained sedimentary rocks and hydrocarbon sweet spots

JIANG Zaixing,KONG Xiangxin,YANG Yepeng,ZHANG Jianguo,ZHANG Yuanfu,WANG Li,YUAN Xiaodong

Fig. 12. Reservoir lithofacies of the “sweet spot” of mixed source type[42]. (a) Well ST2X, 3 724.55-33724.94 m, the Es3L of Shulu Sag, mixed-source carbonate-rich sedimentary rocks; (b) Well ST2X, 3 722.71 m, the Es3L of Shulu Sag, detrital carbonates and abnormal pressure fractures; (c) fluorescence photo of (b).