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. 2014 Aug 4;111(33):11955–11960. doi: 10.1073/pnas.1402015111

Fig. 7.

Fig. 7.

1H NMR relaxometry for a crude oil sample. (A) Setup. (B) CPMG echo signal vs. echo time at 25 °C (blue) and 150 °C (red). (C, Left) Semilog plot of the echo decay at 25 °C (blue) and 150 °C (red). Echo spacing is 4 ms. (Right) T2 spectrum at 25 °C.