Using BIB-SEM Imaging for Permeability Prediction in Heterogeneous Shales

Figure 2

Mineralogical, microstructural, and morphological features of clasts (red), pore space (yellow/purple), and rock matrix showing BSE (a, c, e, g, i, k) and SE2 (b, d, f, h, j, l) recordings of sample NJ-001. Grains occur in a wide range of sizes but were chosen according to their characteristic properties for this illustration (e.g., due to partial idiomorphism). Porosity is predominantly distributed between clasts and OM interfaces (InterP), representing very narrow elongated slits along grain boundary interfaces within the polycrystalline matrix. Minerals phases are as follows: Ab, albite; Ca, carbonate; Ch, chlorite; Cl, clay; Fs, feldspar; Mi, mica; OM, organic matter; Py, pyrite; Qz, quartz.

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