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
Figure 8
spectra of the NMR measurements under the full water-saturated () condition for the investigated samples.
(a) Shale |
(b) Mudstone |
(c) Sandstone |