- Alone or with formation density to determine porosity
- Normalized count rates from the near and far detectors can be used to distinguish gas from oil.
- With density to determine rock type via cross-plot
- With density, crossover indicates presence of gas
- Shallow depth of investigation increases sensitivity to washout, but since measurements are made soon after drilling, this is less often a problem than with wireline logs.
- Clay materials contain hydrogen in bound water, often making neutron logs difficult to interpret.
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