METHOD OF CONSTRUCTING GEOLOGICAL AND HYDRODYNAMIC MODELS OF OIL AND GAS FIELDS Russian patent published in 2020 - IPC E21B49/00 G06T17/05 G06F30/20 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry, namely, to methods of construction of geological and hydrodynamic models of deposit. Method includes point-by-point interpretation of well geophysical survey materials, field-geologic survey of wells, laboratory analysis of core with determination of filtration-capacitance properties, substantiation of boundary values of different lithotypes, detailed lithological partition of section, separation of intervals of "spotted" oil saturation with allowance for deposit height and permeability of interlayers, formation testing results, core geochemical investigations and critical water saturation, construction of detailed volumetric geological model taking into account characteristics of non-reservoirs and assigning previously valid FCS boundary values for "siltstone", construction of detailed hydrodynamic model with actual interfacing of water-saturated siltstones and oil-saturated sandstones inside productive formation, taking into account the fraction of loosely bound water changing over into free state after HFF, calculation of parameters for historical period for evaluation of model adaptation quality, determination of volumes of accumulated oil, fluid and percentage of water cut.

EFFECT: higher efficiency of development and operation of deposit in conditions of complex reservoirs with banded saturation.

1 cl, 15 dwg