INTEGRATION OF DATA SEQUENCES OF ECHO SIGNALS IN TIME INTERVAL WITH DIFFERENT VALUES OF GRADIENT AND TIME BETWEEN ECHO SIGNALS Russian patent published in 2009 - IPC G01R33/44 G01V3/32 

Abstract RU 2354989 C2

FIELD: physics; measurement.

SUBSTANCE: present invention pertains to the method of obtaining parametres of rocks using a nuclear magnetic logging device. During magnetic-nuclear measurements of spin echo with one or more differences, related to (i) time intervals between echo signals, (ii) static field gradient, (iii) polarisation time, or (iv) noise level, defined by diffusion coefficient of fluid, integration of measurement results of spin echo is not an easy task. Nevertheless, using a correction coefficient, that integration is possible and provides for better integration of rock properties.

EFFECT: increased efficiency of logging analysis and evaluating rock strata using combined signals, obtained from series of echo signals in different ranges of magnetic field gradient.

32 cl, 9 dwg

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RU 2 354 989 C2

Authors

Chehn' Sunkhua

Dates

2009-05-10Published

2004-05-05Filed