Research Article
Nuclear Magnetic Resonance Study on Microstructure and Permeability of Coals of Different Ranks
Table 3
CPMG sequence parameters.
| Parameter | Value |
| SW (kHz) | 333.333 | SF (MHz) | 21 | O1 (Hz) | 675098.01 | RFD (ms) | 0.080 | RG1 (dB) | 15 | P1 (μs) | 23.00 | DRG | 3 | DR | 1 | TW (ms) | 1500.000 | NS | 32 | PRG | 1 | P2 (μs) | 44.00 | TE (ms) | 0.202 | NECH | 10000 |
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