“Exploring petroleum inside source kitchen”: Connotation and prospects of source rock oil and gas

Zhi YANG,Caineng ZOU

Fig. 4. Argon ion polishing-SEM photos of source rock oil and gas in major basins in China. (a) Weiyuan block of Sichuan Basin; Lower Silurian Longmaxi Formation; core; black shale; organic matter coexisting with quartz, calcite, dolomite and clay minerals; (b) Weiyuan block of Sichuan Basin; Lower Silurian Longmaxi Formation; core; black shale; organic matter coexisting with quartz, calcite, dolomite and clay minerals; (c) Weiyuan block of Sichuan Basin; Lower Silurian Longmaxi Formation; core; black shale; organic matter coexisting with quartz and clay minerals; (d) Weiyuan block of Sichuan Basin; Lower Silurian Longmaxi Formation; core; black shale; organic matter coexisting with quartz and clay minerals; (e) Well 147 in Ordos Basin; Upper Triassic Yanchang Formation; core; black shale; organic matter coexisting with quartz, feldspar, pyrite and clay minerals; (f) Well 147 in Ordos Basin; 7th member of the Upper Triassic Yanchang Formation; core; black Shale; organic matter coexisting with pyrite and clay minerals; (g) Well Jin 432 in Songliao Basin; Lower Cretaceous Qingshankou Formation; core; black shale; organic matter coexisting with quartz, feldspar, pyrite and clay minerals; (h) Well Ji 174 in Jimsar Sag, Junggar Basin; Middle Permian Lucaogou Formation; core; black shale; organic matter coexisting with quartz, dolomite and calcite minerals; (i) Coal mine in Qinshui Basin; Lower Permian Shanxi Formation; coal sample; black coal rock; organic matter coexisting with clay minerals such as illite and I/S mixed-layers; (j) Coal mine in Qinshui Basin; Lower Permian Shanxi Formation; coal sample; black coal rock; organic matter coexisting with clay minerals such as kaolinite; (k) Coal mine in Qinshui Basin; Upper Carboniferous Taiyuan Formation; coal sample; black coal rock; organic matter coexisting with calcite; (l) East margin coal mine of Ordos Basin; Lower Permian Shanxi Formation; coal sample; black coal rock; organic matter coexisting with clay minerals such as kaolinite.