Material Exchange and Migration between Pore Fluids and Sandstones during Diagenetic Processes in Rift Basins: A Case Study Based on Analysis of Diagenetic Products in Dongying Sag, Bohai Bay Basin, East China

Figure 13

Morphological features of diagenetic products in Es of Dongying Sag. ((a) Well He 142, 3064.83 m, wormlike authigenic kaolinites (K1) intergrew with quartz overgrowths; (b) Well He 142, 3064.83 m, local amplification of (a), K1 intergrew with quartz overgrowths; (c) Well Xin 154, 2938.56 m, K1 filled in secondary pores; (d) Well Xin 154, 2938.56 m, local amplification of (c), wormlike authigenic kaolinite (K1); (e) Well N105, 3096.2 m, disordered authigenic kaolinite distributed on the surface of K-feldspars (K2); (f) Well N105, 3096.2 m, local amplification of (e); (g) Well XX161, 3272.5 m, illitization of K1 and K2; (h) Well S106, 3398.70 m, Cc4 and Py2).

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