Reservoirs properties of slump-type sub-lacustrine fans and their main control factors in first member of Paleogene Shahejie Formation in Binhai area, Bohai Bay Basin, China

PU Xiugang,ZHAO Xianzheng,WANG Jiahao,WU Jiapeng,HAN Wenzhong,WANG Hua,SHI Zhannan,JIANG Wenya,ZHANG Wei

Fig. 4. Composition and texture characteristics of sandstone detritus particles in the Sha 1 Member in the coastal area. (a) Well Binshen 6, 3570.0 m, Es1Z, more andesite detritus and a small amount of oolitic particles, (+); (b) Well Binhai 1, 3310.0 m, Es1Z, oolitic limestone detritus, (+); (c) Well Binshen 1, 4014.0 m, Es1X, dissolution of limestone detritus, (-); (d) Well Binshen 22, 4180.4 m, Es1X, flint detritus, calcareous cement, (+); (e) Well Binshen 6, 3570.0 m, Es1X, andesite detritus, (+); (f) Well Binshen 22, 4085.0 m, Es1X, early calcite basement cement (dyed red), (+); (g) Well Bin 21, 3419.4 m, Es1S, a large number of primary intergranular pores and a few intragranular dissolved pores, (-); (h) Well Binhai 4, 3778.6 m, Es1S, feldspar cleavage fractures and calcite filling, (+).