Reservoir characterization

Two Approaches Provide Quality Control for NMR Measurement of Unconventional Rock

The authors introduce and compare two quality-control approaches based on two different signal-processing practices.

Double exposure of engineer meeting for architectural project and working with partner engineering on workplace of oil and gas refinery concept.
Double exposure of engineer meeting for architectural project and working with partner engineering on workplace of oil and gas refinery concept.
9632290_400/Getty Images/iStockphoto

Nuclear magnetic resonance (NMR) measurements are extremely valuable in the assessment of fluid-flow properties of rocks. However, inverted transverse-relaxation time (T2) distributions are often biased. The authors of the complete paper introduce and compare two quality-control approaches based on two different signal-processing practices: the semilogarithmic derivative and the Hilbert transform. This work provides the basis of effective quality-control methods for NMR measurements for the petrophysical interpretation of rocks with complex pore-size distributions.

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