Experimental Study on the Distribution of Retained Fracturing Fluids and Its Effect on the Permeability and Wettability in Tight Oil Reservoirs

Figure 11

NMR spectra of different core slices.

(a) Core slice A-1

(b) Core slice A-2

(c) Core slice A-3

(d) Core slice A-4

(e) Core slice A-5

(f) Core slice B-4