METHOD FOR DETERMINING TOTAL POROSITY OF CAVERNOUS ROCK SAMPLES BY NUCLEAR MAGNETIC RESONANCE METHOD Russian patent published in 2017 - IPC G01N24/08 

FIELD: physics.

SUBSTANCE: determination of total porosity of rock samples is performed by recording the NMR signal from the hydrogen atoms of hydrogen-containing liquid, completely saturating the porous space of the samples under study. The rock sample is saturated with liquid, placed in a cylindrical body for determination of porosity by NMR method for cavernous samples, placed in the zone of NMR spectrometer measurements, where the total porosity is measured by determining the volume of liquid in the sample, related to its geometric volume, distribution of the transverse relaxation time T2 is created based on the obtained data, by which, with allowance for the boundary value, a cavernous component of the total porosity is isolated.

EFFECT: ensuring the possibility of NMR studies of cavernous samples with the possibility of taking into account the contribution of the cavernous component to the value of the total porosity, making it possible to use the obtained intermediate results of the studies for comparison with the results of nuclear magnetic logging.

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