Characteristics of Hydration Damage and Its Influence on Permeability of Lamellar Shale Oil Reservoirs in Ordos Basin

Figure 7

Microstructure of laminas and beddings. (a) Fracture networks formed by superimposition of shale and sandstone laminas. (b) Deformed laminas and dendritic fractures in transition section between shale and tuff. (c) Fractures in beddings. (d) Fractures in laminas. (e) The direction of mineral arrangement and organic matter band were consistent with fractures. (f) There was obvious delamination phenomenon at the edge of the sample when the observation surface was parallel to the lamellar plane.

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