METHOD FOR DETERMINING FILTRATION RESISTANCE COEFFICIENTS OF GAS CONDENSATE WELL Russian patent published in 2024 - IPC E21B47/00 

FIELD: gas industry.

SUBSTANCE: method includes determining the thickness of the perforated interval, the internal radius of the well production string, gas flow rate, and bottomhole pressure in the filtration mode, changing the filtration conditions at the bottom of the well under study to unsteady by stopping the well, recording the pressure recovery curve at the wellhead and at bottom of the well, determining the formation pressure and temperature under unsteady conditions, determining of the permeability factor, Forschheimer turbulence factor. Before determining the filtration resistance factors, supercompressibility factor of the real gas is determined based on predetermined values of reduced pressure and reduced temperature, relative density of the gas relative to air under the standard conditions is determined, and the filtration resistance factors b and a are determined using mathematical expressions.

EFFECT: accuracy of determining filtration resistance factors and reliability of gas-dynamic studies of the well are increased.

1 cl, 2 dwg, 2 tbl