The creation of oil emulsions due to mechanical strength and natural surfactants during production is undesirable. The challenges associated with transporting and refining oil have led researchers to probe into practical demulsification methods. An in-depth understanding of crude oil rheology and operating conditions to treat emulsion is necessary. The main objective of the current study was to investigate the rheological behavior and demulsification rate of crude oil emulsions. The rheological behavior of a crude oil emulsion was studied by manipulating its temperature (30 °C–90 °C), shear rate (0.1–1000 s^–1), and water volume fraction (20%, 30%, and 40%). For emulsions of various water content, the rheological studies followed the non-Newtonian shear thinning behavior, which was explained effectively by the Herschel–Bulkley model. Experimental results also indicated that the measured viscosity of emulsion decreased significantly with temperature, while increasing water volume fraction increased viscosity. The rates of demulsification of water in crude oil emulsion in direct current fields were investigated under various conditions by using an electrochemical cell. The separation rate of water increased along with the applied field, water content, and salt concentration. Results of this study indicated that emulsion separation was governed by the magnitude of the applied electric field as well as the type of electrode.

中文翻译：

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使用电场法破乳马来西亚轻质原油乳液

由于在生产过程中由于机械强度和天然表面活性剂而产生的油乳液是不希望的。与运输和炼油相关的挑战已导致研究人员探索实用的破乳方法。有必要对原油流变学和操作条件进行深入了解，以处理乳液。本研究的主要目的是研究原油乳液的流变行为和破乳速率。通过控制温度（30°C–90°C），剪切速率（0.1–1000 s ^–1）来研究原油乳液的流变行为。）和水体积分数（20％，30％和40％）。对于各种含水量的乳液，流变学研究遵循非牛顿剪切稀化行为，这通过Herschel-Bulkley模型得到了有效解释。实验结果还表明，乳液的测得粘度随温度而显着降低，而水体积分数的增加则使粘度增加。通过使用电化学电池，在各种条件下研究了直流电场下原油乳液中水的破乳速率。水的分离率随所施加的田地，水含量和盐浓度的增加而增加。这项研究的结果表明，乳剂的分离取决于所施加电场的大小以及电极的类型。