Research Article

Nanoscale Pore Structure Characterization and Permeability of Mudrocks and Fine-Grained Sandstones in Coal Reservoirs by Scanning Electron Microscopy, Mercury Intrusion Porosimetry, and Low-Field Nuclear Magnetic Resonance

Table 5

Pore-structure parameters measured by NMR.

Sample number (ms)FFI (%)BVI (%)FFI/BVI

JH-Y1.5513.6186.390.16
JH-S2.6813.1286.880.15
NT-Y12.688.8191.190.10
NT-Y24.6413.1386.870.15
NT-Y31.5513.2986.710.15
NT-M12.687.9392.070.09
NT-M22.6810.5689.440.12
NT-M33.228.3491.660.09
NT-M42.688.6591.350.09
NT-M52.2312.4487.560.14
NT-M62.6811.5988.410.13
NT-S20.0368.4131.592.17