METHOD OF DETERMINING THE PARAMETERS HYDROCARBON SATURATION IN RESERVOIRS OF OIL AND GAS CONDENSATE FIELDS AND EVALUATION OF THEIR FILTRATION AND CAPACITY PROPERTIES IN OIL AND GAS WELLS, CASED BY A FIBERGLASS COLUMN Russian patent published in 2019 - IPC G01V5/10 

FIELD: measurement technology.

SUBSTANCE: use: for determination of hydrocarbon saturation parameters of strata-reservoirs of oil and gas condensate deposits. Summary of invention consists in the fact that measurement of spectral intensity of GRRC (gamma-radiation of radiation capture of neutrons) of spectrometric neutron gamma-ray logging combined with measurement of neutron flux intensity J_ss and J_ls in the region of more than 500 keV per small and large sondes neutron-neutron logging by epithermal neutrons, function of porosity F(K_p) is calculated, saturation function "far zone" F(H_f), calculating “near zone” saturation functions F(H_n), calculating the "well" saturation functions F(H_w) with cross-raft construction F(H_d) from F(K_p), F(H_n) from F(K_p), F(H_w) from F(K_p) relationships, from which saturation functions corresponding to water-saturated formations – F(H_wf), oil-saturated formations – F(H_of), and gas-saturated formations – F(H_gf); dependencies are used for calculation of oil saturation coefficients, oil and gas saturation, gas saturation, volumetric oil saturation, volumetric oil and gas saturation and volumetric gas saturation.

EFFECT: providing the possibility of increasing the information content of investigations owing to broader functional capabilities of neutron methods from probing a well borehole zone with calculation of parameters of hydrocarbon saturation with reservoirs at different distances from the wall of the fiberglass column in wells.

4 cl, 2 dwg