Thermal neutron die away logging system with optimized gating

Details Thermal neutron die away logging system with optimized gating Thermal neutron die away logging system with optimized gating

1977-06-24

1978-10-24

Willis, Davis L.

Radiant energy

Geological testing or irradiation

Well testing apparatus and methods

250269, 250270, G01V 500

Patent

active

041223381

ABSTRACT:
A system for measuring the thermal neutron lifetime of earth formations in the vicinity of a well borehole is disclosed. A downhole sonde is equipped with a pulsed neutron source, a thermal neutron or gamma ray detector and a pair of measurement electrodes. The measured salinity of the borehole fluid is used to optimize the delay time to the opening of measurement gating intervals for signals from the detector.

REFERENCES:
patent: 4046764 (1977-09-01), Marquis
patent: 4055763 (1977-10-01), Antkiw

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