Table 3 NMR testing parameters.

From: Characterizing low-permeable shales using Rock-Eval pyrolysis and nuclear magnetic resonance for reconstruction of fluid saturation model

№

NMR test

 

CPMG parameters

Test duration (h)

Time-echo (TE) (ms)

Number of scans (NSA)

Recycle delay (RD) (ms)

Signal-to-noise ratio (SNR)

1

Т2

0.1

128

1500

100

< 0.5

2

Т1–Т2 Map

0.1

16–32

750

50

< 2.5–3

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