Responsibilities of petroleum prospectors: Discussions on dual logic and development trend of hydrocarbon exploration

SUN Longde,FENG Zihui,JIANG Hang,JIANG Tao

Fig. 7. Field emission electron microscope energy spectrum scanning analysis of shale samples. (a) Well Sheng 1, 506.7 m, mudstone,Ro=0.45%; (b) Well Chao21, 1594.87 m, laminated shale,Ro=0.76%; (c) Well Guye 1, 2543.76 m, layered shale, Ro=1.61%. Sme—montmorillonite; Qtz—quartz; Ab—albite; Kfs—potash feldspar; Ank—ankerite; Cal—calcite; Py—pyrite; Ill—illite; Chl—chlorite.