METHOD FOR ESTIMATING COLLECTORS RESERVOIR PROPERTIES AND THE DEGREE OF THE MOBILITY OF HYDROCARBONS IN THE PRODUCTIVE SEDIMENTS OF OIL AND GAS WELLS Russian patent published in 2018 - IPC G01V5/10 

FIELD: measurement technology.

SUBSTANCE: using to diagnose the near-wellbore zone of reservoirs in order to assess their reservoir properties (RP) and the degree of hydrocarbon mobility by a complex of depth neutron methods at the construction stage of oil and gas wells. Summary of Invention consisting in that the measurement of thermal neutron fluxes is exercised at the probes of the neutron-neutron logging for thermal neutrons 2NNLt and at the probes for epithermal neutrons – 2NNLet, and spectral intensity GRRC (gamma-ray radiation neutron capture) spectrometric neutron gamma-ray logging SNGRL, calculating the porosity function F(Kfp) and calculating the function from chlorine F(C1), build on cross-rafts the chlorine function “stiff” F(C1st) from F(Kfp), chlorine function “soft” F (C1sft) from F(Kfp), F(C1nntl) from F(Kfp) dependences and calculate the saturation functions for chlorine F(C1nntl) and F(C1nnntl), and the geological parameters (GP) of reservoir saturation are calculated from the saturation functions: F(C1nntl) and F(C1nnntl) separately for the complex SNGRL + 2NNLet and SNGRL + 2NNLt according to the attached formulas, however, depending on the change in GP reservoir saturation, RP and degree of hydrocarbon mobility in productive sediments of oil and gas wells are established.

EFFECT: expanding functionality of neutron methods for probing near-well zone with calculating the geological parameters (GP) of reservoir saturation with subsequent determination of RP and the degree of hydrocarbon mobility.

4 cl, 4 dwg