Reservoir Characteristics of the Lower Silurian Longmaxi Shale in Zhaotong Region, Southern China

Figure 3

FE-SEM images of shale samples from the Zhaotong region. (a) Organic matter (OM) pores, pyrites, and interP pores at the edges of mineral grains (b) OM pores and cleavage-sheet intraP pores in clay particles; (c) OM pores and fluid-inclusion intrapores; (d) OM pores in OM grains, cleavage-sheet intrapores in clay particles, intrapores with calcite grains, and interpores at the edges of mineral grains; (e) OM pores, cleavage-sheet intrapores within clay particles, and interpores at the edges of mineral grains; (f) fluid-inclusion intrapores within brittle minerals and interpores at the edge of a calcite grain; (g) fluid-inclusion intrapores within brittle minerals and intercrystalline interpores in pyrite framboids; (h) OM pores, intercrystalline pores in pyrite framboids, and interpores at the edges of mineral grains; (i) cleavage-sheet intrapores within clay particles; (j) large OM particle with irregular and elliptical OM pores; (k) OM particle and intercrystalline interpores in pyrite framboids; (l) intercrystalline interpores in pyrite framboids and interpores at the edges of mineral grains.

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