Formation, preservation and connectivity control of organic pores in shale

BORJIGIN Tenger,LU Longfei,YU Lingjie,ZHANG Wentao,PAN Anyang,SHEN Baojian,WANG Ye,YANG Yunfeng,GAO Zhiwei

Fig. 3. Photos showing the heterogeneous pores in O3w-S1l organic matter. (a)-(d) are acritarch: (a) Well JY2, with micropores in the center, and dense and larger pores in the periphery; (b) Well YZ1, with dense pores in the center, and pores in the periphery, with clear boundaries; (c) Well JY2, with pores in the center, and dense pores in the periphery, with clear boundaries, and also pores in the bitumen at the outer edge; (d) Well YZ1, dense spherical organic matter, without pores; (e) -(g) are graptolites from Well DY1: (e) and (f), graptolites contain no pores on the whole; (g) microspores and mesopores are observed locally.