DE2245851
An illustrative embodiment of the present invention includes method and apparatus for improved pulsed neutron logging. The use of very high repetitive rates in pulsed neutron logging using the inelastic gamma ray energy spectrum leads to lingering thermal neutrons from previous high energy neutron p...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | An illustrative embodiment of the present invention includes method and apparatus for improved pulsed neutron logging. The use of very high repetitive rates in pulsed neutron logging using the inelastic gamma ray energy spectrum leads to lingering thermal neutrons from previous high energy neutron pulses. By gating pulses produced by the thermal background pupulation through the same energy windows chosen for observation in the primary logging function just prior to beginning a neutron pulse, storing the counts, and subtracting the counts from those occurring during the neutron pulse in the energy windows of interest, an improved, compensated, inelastic nuetron interaction log may be provided. |
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