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Rheology of Water-in-Crude Oil Emulsions: Influence of Concentration and Temperature

机译：原油包水型乳液的流变学：浓度和温度的影响

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The effect of aqueous phase content and temperature North Sea crude oil emulsion viscoelastic behavior has been studied. Heavy crude oil from the North Sea is of high viscosity and is capable of forming stable water-in-crude oil (w/o) emulsions without introducing any synthetic surfactants. The aqueous phase volume content was varied from 1 to 40%, and the temperature was varied from 0 to 30 °C. The w/o emulsion viscosity increased sharply when the aqueous phase content exceeds 20%, being more pronounced at the lower temperatures. The viscosity flow curves for emulsions containing more than 20% aqueous phase demonstrate non-Newtonian behavior, in contrast to crude oil, which is Newtonian. The coefficients in the master curve describing the viscosity-temperature dependence were determined. Oscillatory rheological tests showed that the loss modulus substantially exceeds the storage modulus which indicates the liquid-like state of the emulsions.
机译：研究了水相含量和温度对北海原油乳液粘弹性行为的影响。来自北海的重质原油具有很高的粘度，能够在不引入任何合成表面活性剂的情况下形成稳定的原油在水（w / o）乳液。水相体积含量为1至40％，温度为0至30℃。当水相含量超过20％时，w / o乳液粘度急剧增加，在较低温度下更明显。与原油（牛顿）相比，含有20％以上水相的乳液的粘度流动曲线显示出非牛顿的行为。确定了描述粘度-温度依赖性的主曲线中的系数。振荡流变试验表明，损耗模量基本上超过了表明乳液呈液态的储能模量。

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