| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: invention refers to oil sampling, determination for them of relationship of tangent of an angle of dielectric losses and frequency tg(f), determination of resonance frequencies of oil and demulsifier (fmo and fmd), which correspond to maximum values of tangent of the angle of dielectric losses of oil and demulsifier (tgmo and tgmd), frequencies f1d, f2d from the following ratio: tgd(f1d, f2d)=0.7 tgmd, where f1d, f2d - frequencies of electromagnetic field at which tgd=0.7tgmd, selection of effective demulsifier for this oil, on the basis of frequency fmo corresponding to maximum oil value tgm from water concentration K in oil, which falls within the range f1df2d, determination as per curve fmo(K) of water quantity "ñ", after delamination of which fmo will not be at the interval of f1df2d; selection of demulsifier with other dielectric properties after water delamination in quantity "ñ". At that, oil, its water-oil emulsions and tested demulsifiers, before relationship of tangent of angle of dielectric losses and frequency tg(f) is determined for them, are heated to dehydration temperature Tdehyd 50-80C, and determination of frequency relationships of tangent of angle of dielectric losses is performed at temperature Tdehyd. ^ EFFECT: improving the accuracy of method of selection of effective demulsifiers and control of efficiency which could consider the varying electric and physical properties of oil not only due to water content, but also thermal conditions of oil dehydration. ^ 3 dwg |
