微波頻率對(duì)聚合物驅(qū)油田采出水處理效果的影響規(guī)律研究
[Abstract]:With the extensive application of polymer flooding technology in oil fields, the difficulty of producing water treatment in polymer flooding field is increasing. The salinity of produced water and the content of polymer affect the interfacial tension, the shear viscosity of oil-water interface. The parameters such as Zeta potential and oil content of oil beads will have different effects. In this paper, we should use microwave technology to treat produced water with certain salinity and polymer content, and frequency is one of the key parameters of microwave. It is of great significance to study the whole experiment. Through the experimental study of treating the produced water of polymer flooding oilfield with microwave at different frequencies, this paper attempts to provide a new possibility for the treatment of produced water from polymer flooding oil field. The samples used in this paper are self-made simulated polymer flooding oilfield produced water. The experimental samples need to have certain degree of mineralization and a certain amount of polymer. First of all, different degrees of mineralization are obtained through experiments. The influence of polymer and polymer concentration on interfacial tension, shear viscosity of oil-water interface, Zeta potential of oil beads and oil content; Secondly, the simulated polymer flooding produced water with certain salinity and polymer content was prepared, the samples were treated with microwave at different frequencies for different time, and the bulk viscosity and interfacial shear viscosity of the treated solution were also studied. Zeta potential, oil removal rate and relative molecular weight of polymer were determined. Thirdly, the related mathematical model is established to analyze the change law of the above parameters. The experimental results and theoretical analysis show that: 1, with the increase of salinity, the interfacial tension decreases, the interfacial shear viscosity has no effect, the absolute value of Zeta potential increases, and the oil content in the produced water decreases; 2, with the increase of polymer concentration, the interfacial tension of oil and water in the produced water does not change, the interfacial shear viscosity increases, and the absolute value of Zeta potential of oil beads increases; 3. The change of relative molecular weight of polymer has no obvious effect on interfacial tension. 4. When the salinity, polymer type and content, oil content are constant, the Zeta potential value and oil removal rate of the solution increase with the increase of action time, while the bulk viscosity and interfacial shear viscosity of the solution are increased. The relative molecular weight of polymer showed a decreasing trend. 5. The effects of different frequencies on the above parameters are different, but they all have good effects. The treatment effect of polymer flooding produced water by microwave with different frequency has a good application prospect.
【學(xué)位授予單位】:西安石油大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類號(hào)】:X741
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