Factors Controlling Shale Reservoirs and Development Potential Evaluation: A Case Study

Figure 6

FE-SEM images of the shale samples from wellblock XN111. (a) OM pores, pyrite, and interP pores at the edges of mineral grains; (b) large OM particle with irregular and elliptical OM pores; (c) intercrystalline interP pores in pyrite framboids; (d) microfractures; (e) intraP pores with calcite grains; (f) OM pores and interP pores at the edge of a calcite grains; (g) interP pores at the edges of mineral grains, OM pores, and intercrystalline interP pores in clay particles; (h) fluid inclusion intraP pores within brittle minerals and OM pores in OM grains; (i) cleavage-sheet intraP pores within clay particles and OM pores; (j) intercrystalline interP pores in pyrite framboids, microfractures and OM particle with irregular and elliptical OM pores; (k) OM pores and interP pores at the edges of mineral grains; (l) porous OM particles.

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