ADVANCED METHOD OF ROTARY DROP

Abstract

The article indicates the features of the use of aqueous solutions of surfactants in gas and oil production. The defining parameters of such solutions which are investigated at a choice of the applied surfactants are specified. The analysis of the known methods for determining the interfacial tension by the rotating drop method showed the possibility of improving the procedure for calculating the interfacial tension to simplify it. In the article it is offered to improve a technique of calculation of an interfacial tension by a method of a fixed rotating drop with application of the equation of Vonnegut with a correction factor. The value of the correction factor was obtained from the calculations of the contours of the fixed rotating drops, as well as the calculation of the interfacial tension using the Vonnegut formula based on the calculated contours. It is established that the correction factor can be represented as a functional dependence on the ratio of diameter to the length of the rotating drop. To verify this relationship, the correlation coefficients between the correction factor and the size of the rotating drop were calculated. During the experimental test, the possibility of using the developed technique to study the parameters of aqueous solutions of surfactants with petroleum products was confirmed.