Emulsification behaviors of crude oil-water system and its quantitative relationship with exergy loss rate

Wen, Jiangbo; Luo, Haijun; Zhi-qin, Long

doi:10.1016/j.petrol.2019.01.082

Cited by 8 publications

(14 citation statements)

References 42 publications

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“…In the case of incomplete emulsification with high water fraction, it was found that the emulsified water fraction under different shear rates, water fractions, and temperatures could be quantitatively correlated to the exergy loss rate of shearing in a unitive way, 39 as shown in Figure 4 .…”

Section: Results and Discussionmentioning

confidence: 96%

“…The amount of energy dissipation determines the emulsification degree of the crude oil–water mixture. The exergy loss rate of shearing can be used to characterize the energy dissipation in the emulsification process according to our another published work, 39 which is calculated by the following equation: where N is the stirring speed, r·s –1 , M is the stirring torque, N m, and ρ is the density of the crude oil–water mixture, kg·m –3 .…”

Section: Results and Discussionmentioning

confidence: 99%

“…Furthermore, a power-law equation was developed for describing the quantitative relation between the emulsified water fraction and exergy loss rate of shearing with two undetermined parameters relating to physicochemical properties of crude oils, 39 as follows: where İ is the exergy loss rate of shearing and k 1 and k 2 are the undetermined parameters closely relating to the crude oil physicochemical properties.…”

Section: Results and Discussionmentioning

confidence: 99%

Section: Relationship Between the Emulsified Watermentioning

confidence: 99%

“…However, quantitative research studies on the relationship between physicochemical properties of crude oil and emulsification characteristics are quite lacking. In our published work, it was found that the emulsified water fraction under varying circumstances of shear rate, water fraction, and temperature could be quantitatively correlated with the exergy loss rate of shearing in a unitive way for incomplete emulsification; moreover, a power-law equation between the emulsified water fraction and the exergy loss rate of shearing was presented, with two undetermined parameters relating to physicochemical properties of crude oils. However, the unknown and unquantified undetermined parameters limited the application of the mentioned power-law equation in the calculation of multiphase flow.…”

Section: Introductionmentioning

confidence: 98%

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Prediction Model between Emulsified Water Fractions and Physicochemical Properties of Crude Oil Based on the Exergy Loss Rate

Wen

Luo

2021

ACS Omega

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The quantitative calculation of emulsified water fractions of crude oil–water systems is of great significance for the study of flow characteristics of multiphase flow pipelines. For a crude oil–water system with a high water fraction, the emulsified water fraction under different influencing factors was determined by emulsification experiments. It was found that the emulsified water fraction under different shearing conditions correlated well with the exergy loss rate and could be described by a power-law equation, in which two undetermined parameters relate to the crude oil physicochemical properties. Six representative parameters were selected to describe the crude oil physicochemical properties, i.e., the sum of asphaltene and resin contents, wax content, mechanical impurity content, crude oil acid number, crude oil average carbon number, and crude oil viscosity. Further, the correlations between the two undetermined parameters and the crude oil physicochemical properties were derived by regression analysis. Thus, the prediction model of emulsified water fraction was determined, which could be conveniently adopted to predict the emulsified water fraction with different crude oils and shearing conditions. The validation results showed that the mean relative deviation of the model prediction is 4.5%.

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Section: Results and Discussionmentioning

confidence: 96%