Three frequency modulated combination thermal neutron...

Details Three frequency modulated combination thermal neutron... Three frequency modulated combination thermal neutron...

G - Physics

01

V

358/4

G01V 5/00 (2006.01) G01V 5/10 (2006.01)

Patent

CA 1051561

THREE FREQUENCY MODULATED COMBINATION THERMAL NEUTRON LIFETIME LOG AND POROSITY LOG (D#73,327-F) ABSTRACT OF THE DISCLOSURE Methods are disclosed for measuring simultaneously the thermal neutron lifetime of the borehole fluid and earth formations in the vicinity of a well borehole, together with the formation porosity. A harmonically intensity modulated source of fast neutrons is used to irradiate the earth formations with fast neutrons at three different intensity modulation frequency. Intensity modulated clouds of thermal neutrons at each of the three modulation frequencies are detected by dual spaced detectors and the relative phase shift of the thermal neutrons with respect to the fast neutrons is determined at each of the three modulation frequencies at each detector. These measurements are then combined to determine simultaneously the thermal neutron decay time of the borehole fluid, the thermal neutron decay time of surrounding earth formation media and the porosity of the formation media. -I-

250701

Affiliated with

Also associated with

Rating

Three frequency modulated combination thermal neutron... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Three frequency modulated combination thermal neutron..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three frequency modulated combination thermal neutron... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-615111