Re-recognition of “unconventional” in unconventional oil and gas

JIAO Fangzheng

Fig. 4. Development characteristics of organic matter pores in Wufeng Formation-Longmaxi Formation shale of Well in Sichuan Basin. (a) FIB-HIM imaging, pores developed in organic matter, with pore boundary dissolved and connected, pore diameter of up to 2 μm and good connectivity; (b) Surface porosity of the organic matter in graph (a) is 43.6%; (c) FIB-HIM imaging, organic matter pores in shale matrix, with clear pore boundaries, medium connectivity, and pore diameter of 10-400 nm; (d) Surface porosity of the organic matter in graph (c) is 30.6%.