Using BIB-SEM Imaging for Permeability Prediction in Heterogeneous Shales

Figure 6

Mineralogical, microstructural, and morphological features of clasts (red), pore space (yellow/purple), and rock matrix of sample NJ-019 and NJ-023. Grains occur in a wide range of sizes but were chosen according to their characteristic properties for this illustration. Porosity is predominantly distributed between clasts and OM interfaces (InterP), representing very narrow elongated slits along grain boundary interfaces within the polycrystalline matrix. Mineral phases are as follows: Ab, albite; Ca, carbonate; Ch, chlorite; Cl, clay; K-Fs, potassium feldspar; OM, organic matter; Py, pyrite.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)

(k)

(l)