CPC G01V 3/32 (2013.01) [E21B 47/12 (2013.01); G01R 33/448 (2013.01)] | 20 Claims |
1. A method comprising:
controlling radio frequency emission circuitry of a nuclear magnetic resonance unit to emit radio frequency energy in at least first and second sequences, the first sequence comprising a phase alternating paired (PAP) sequence including a first wait time between an even number of sequence repeats with an equal number of positive and negative phases, the second sequence comprising a non-phase alternating paired (non-PAP) sequence including a second wait time for a single sequence repeat with a single phase; and
acquiring, via antenna circuitry and analog-to-digital conversion circuitry, nuclear magnetic resonance echoes as digital echo data during and responsive to each of the first and second sequences.
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