PROCEDURE FOR SIMULTANEOUS EXPLORATION BY METHODS OF RADIOACTIVE LOGGING AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2011 - IPC G01V5/00 

FIELD: mining engineering.

SUBSTANCE: there are simultaneously measured sections of heat neutron capture and record of gamma-quantum of natural radioactive background, and also of gamma-quantum generated at nuclear disintegration of activated oxygen in interval of time between two pulses of radiation of neutrons. Also, in the interval of time between two pulses of neutron radiation there is formed sequence of time windows whereat the time windows in interval of time from 0 to 6 msec upon pulse of neutron radiation are used for record by the INGK - PNGL - pulse neutron gamma-logging method, while the left time window till the next pulse of neutron radiation is used for record by methods of KNAM - ONAM - oxygen neutron activation method and GK - GL- gamma-logging. The methods ONAM and GL are separated due to division of received γ-quantum by energy. For record of γ-quantum from radioactive isotopes there is established a threshold of discrimination within the range from 2000 to 4000 keV, while for record of γ-quantum of natural radioactive background there is specified the threshold from 30 to 2000 keV.

EFFECT: upgraded accuracy and reliability of obtained results of exploration.

2 cl, 3 dwg