METHOD OF ELIMINATING EFFECT OF MECHANICAL IMPURITIES ON SIGNAL MEASURED BY RESISTIVE SENSOR Russian patent published in 2025 - IPC G01N27/403 G01N27/02 

FIELD: mining; measuring.

SUBSTANCE: invention relates to gas production and can be used for monitoring development of gas and gas condensate deposits. Resistive sensor is pre-calibrated by measuring electrical resistance and temperature of salt solutions of a given mineralization in laboratory conditions using a sealed conductometric cell simulating measurement conditions in the well piping. Saline solutions and direct emulsions with different fractions of formation water are used as calibration, then, a calibrated resistive sensor is installed in a cylindrical recess of the pipeline, which is simultaneously a sample catcher and a measuring cell, and the value of electrical resistance of the associated liquid containing mechanical impurities is measured. Measured value of electric resistance of associated liquid containing mechanical impurities, R_eƒƒ, is used to determine the value of electric resistance R^sp_eƒƒ, which corresponds to a homogeneous conducting space, by the formula: R^sp_eƒƒ = R_eƒƒ * K_tr. The conversion factor K_tr is equal to 0.88. The value of the interelectrode capacitance of the sensor C^sp_eƒƒ is determined using the formula for the capacitance of two cylinders of finite dimensions immersed in a homogeneous space with permittivity ε_au. Using the ratio: ε_aυ * ρ_e = C^sp_eƒƒ * R^sp_eƒƒ, determining specific resistance ρ_e of pure liquid without impurities.

EFFECT: scientifically grounded method of eliminating the effect of mechanical impurities on the signal measured by a resistive sensor.

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