FIELD: method for measuring.
SUBSTANCE: solution is related to the method for measuring the mass of oil hydrocarbons contained in water discharged through pipeline valves during controlled drainage of tanks and tanks of oil and gas processing enterprises. The method includes determining the diameter of the flow section of the valve, measuring the excess pressure and density of hydrocarbons, measuring the discharge time, determining the area of the flow section of the valve, mass flow and mass of discharged hydrocarbons, according to the invention, the degree of opening of the shut-off element of the valve is additionally measured by the height of the stem or the angle of rotation of the control handle, the flow area and the coefficient of local resistance of pipeline valves is determined by mathematical dependencies, the density of the combined sample of hydrocarbons with produced water is identified, the mass of oil hydrocarbons Mdr contained in water discharged through pipeline fittings during drainage of tanks and tanks of oil and gas processing enterprises is calculated according to the formula: Mdr = (1 / √(1+ζ))Ffltdr(ps-po/(1-998.2/po))√(2Plps-1), kg, where ζ - coefficient of local resistance of pipeline fittings; Ffl - flow area of pipeline fittings, m2; Pl - fluid pressure in the pipeline in front of the valve, Pa; ps - density of the combined sample of the discharged liquid, kg/m3; tdr - the duration of the discharge of fluid during drainage, s; ps - density of the combined sample of the discharged liquid, kg/m3; po- density of oil hydrocarbons, kg/m3.
EFFECT: improving the accuracy of measuring the mass of oil hydrocarbons when discharged into an industrial sewer in a mixture with water, expanding the practical applicability of the method for technological installations of oil and gas processing enterprises in cases of using other types of pipeline valves with full or partial opening of the shut-off valve element.
1 cl, 1 tbl
| Title | Year | Author | Number |
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| AUTOMATIC DEVICE FOR COLLECTING TRAY WATER FROM RESERVOIR | 0 |
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| METHOD OF DETERMINING WEIGHT OF OIL IN A TANK | 2019 |
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