It was shown that the Leverett J-function and the Brooks-Corey correlating function approximate the capillary curves with insufficient accuracy and therefore do not allow us to obtain an analytical expression for the density distribution of pore channels by size. The polynomial approximation proposed makes it possible to sharply increase the reliability and accuracy of the capillary curves approximation. We obtained analytical expressions that allow to get a density distribution function of pore channels by size for known values of filtration-capacitive parameters (porosity, permeability, residual water saturation). It should be noted that the correlation between the distribution of the size of the pore channels and the porometric characteristics of the reservoir can be obtained according to the geophysical methods of well research.
Under the conditions of oil deposits of Jurassic deposits in Western Siberia, the influence of geological and technological parameters on the degree of response of producing wells to the injection of water into injection wells has been studied. Parameters that have a prevailing effect on the success of water flooding, as reflected by the magnitude of the cross-correlation function, are identified. Water flooding success parameter is proposed. The minimum and critical values of this parameter are established. A technique is proposed for selecting production wells for transferring them to injection, as well as for selecting the density of the grid of wells at the stage of field exit from exploration.
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