A method for calculating the relative phase permeability of oil when filtering a mixture of oil, gas and water
UDC: 622.276.031.011.433
DOI: 10.33285/0207-2351-2023-1(649)-55-59
Authors:
KURBANOV AMIRKHAN K.
Keywords: oil, gas, water, mixture, two-phase flow, three-phase flow, relative permeability, experimental studies, core, sandstone, oil saturation, water saturation, gas saturation, formulas, graphs, diagrams
Annotation:
The results of the experiments carried out to determine relative phase permeability (RPhP) during flow in a porous medium of a mixture of oil, gas and water, depending on the saturation, are usually presented graphically on a triangular diagram in the form of lines of constant RPhP values (isoperms). At the same time, the three-phase flow area is limited by isoperms corresponding to zero RPhP values for oil, gas, and water.
Because of the great difficulties of RPhP determination in case of a three-phase flow, computational models based on the experimental data obtained during two-phase flows of oil and water at zero permeability for gas and oil and gas at zero permeability for water, have become widespread.
The present article, to refine the calculations, proposes a new approach that additionally uses experimental data on the residual oil saturation when oil is displaced by a water-gas mixture of various compositions, i.e. two-phase water and gas flow data at zero oil permeability.
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