METHOD OF FORECAST OF CAPACITIVE PARAMETERS AND TYPE OF FLUID SATURATION OF RESERVOIRS Russian patent published in 2015 - IPC G01V11/00 

FIELD: physics, geophysics.

SUBSTANCE: invention relates to field of geophysics and can be used for determination of structural features, lithology and type of fluid saturation of reservoirs. According to the offered method the time-space and/or spatial - frequency data of electromagnetic measurements are obtained with the subsequent reconstruction of volume distribution of conductance of geological model of medium. Then the interval aggregate longitudinal electrical conductance of medium are calculated, the identification in the medium of reservoir beds with abnormal aggregate longitudinal electrical conductance is performed, the positions of axial surfaces of reservoir beds are determined, the thickness of reservoir beds corresponding to positions of axial surfaces is determined, the resistivity is determined using the value of interval aggregate longitudinal conductance of the film inside the bed for each point of measurements. The initial geo-electric model of medium is verified and disagreements are corrected. The variations of interval values of resistivity are determined. In the zone band of sharp decrease of specific resistance the coefficient of porosity of selected layers is determined, using which the capacity of reservoir bed, and also the nature of saturating fluid on the basis of interval resistivity ρ_p and petrophysical or statistical data are determined.

EFFECT: improvement of accuracy of the prospecting data.

5 cl, 8 dwg, 1 tbl