Controlling factors of marine shale gas differential enrichment in southern China

JIANG Zhenxue,SONG Yan,TANG Xianglu,LI Zhuo,WANG Xingmeng,WANG Guozhen,XUE Zixin,LI Xin,ZHANG Kun,CHANG Jiaqi,QIU Hengyuan

Fig. 5. Pore features of marine shale matrix in South China. (a) Well Jiaoye 1, 2 330.00 m, organic pores, organic-rich siliceous shale, the migration bitumen filled in the pyrite. (b) Well Jiaoye 1, 2 330.00 m, organic pores, organic-rich siliceous shale, the migration bitumen. (c) Well Jiaoye 1, 2 408.00 m, organic pores, organic-rich siliceous shale, large transport bitumen. (d) Well Jiaoye 1, 2 408.00 m, organic matter, organic-rich mixed shale, residual kerogen. (e) Well Ning 213, 2 578.23 m, brittle mineral intergranular pore, organic-rich mixed shale. (f) Well Wei 205, 3 697.90 m, pyrite intercrystalline pore, organic-rich mixed shale. (g) Well Ning 216, 2 304.74 m, intercrystalline pore of clay mineral, organic-rich clayey shale. (h) Well Ning 211, 2 307.96 m, intercrystalline pore of clay mineral, organic-rich mixed shale.