Pipe flow experiments of unstable oil-water dispersions with three different oil viscosities: Flow pattern, pressure drop and droplet size measurements

Gonzalez, Diana; Schümann, Heiner; Kjølaas, Jørn

doi:10.1016/j.petrol.2022.110996

Cited by 4 publications

(3 citation statements)

References 14 publications

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“…The result was consistent with the findings of Yi et al [34]. However, Gonzalez et al [12] found that in a water-dominated dispersed flow, the oil droplet size decreased as the mixture velocity increased, but the mixture velocity had little influence on the size in oil continuous flow. In addition, the authors demonstrated that the impact of oil viscosity on droplet size in the water-dominated flow was smaller than that in the oil-dominated.…”

Section: Introductionsupporting

confidence: 91%

“…The study of oil-water flow is of great significance for improving the theory of multiphase flow and transportation efficiency. Flow pattern [3][4][5] and its transformation characteristics [6][7][8], pressure drop [9][10][11], and reverse phase characteristics [12][13][14] are the focus of current research for oil-water two-phase flow.…”

Section: Introductionmentioning

confidence: 99%

“…It is found that the droplet size is an important factor in determining the rheology and stability of dispersed flow [12,21]. In recent years, several methods have been applied to measure droplet size in tubes, such as the conductance probe method [22,23], the dynamic light scattering technique [24][25][26], the focused beam reflection measurement (FBRM) [27], and particle video microscopy (PVM) [28], and Brown and Pitt [29] and Chatzi and Kiparisside [30] pointed out that the droplet size distribution was affected by the dispersed phase fraction.…”

Section: Introductionmentioning

confidence: 99%

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Oil-Water Two-Phase Flow with Three Different Crude Oils: Flow Structure, Droplet Size and Viscosity

Lv,

Chen,

et al. 2024

Energies

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The study focuses on the flow patterns and pressure drop characteristics of three crude oils and water in a horizontal pipe. The experimental results showed that the transformation boundary of the flow pattern and phase inversion water fraction were related to the flow parameters. Comparing the three oils, it was found that the viscosity and composition of the oil also significantly influence the flow performance, which can be explained by the adsorption properties of the asphaltenes at the oil-water interface. In particular, the droplet size in water-in-oil dispersion flow was observed and measured. It showed that the water droplet size decreased with the increase of oil viscosity, the decrease of water content, the drop of temperature, and the growth of mixing velocity, probably due to higher shear stress and lower frequency of collision and coalescence between droplets. The apparent viscosity of water-in-oil emulsions was calculated by the rheological model, and the qualitative relation between flow parameters and interfacial area concentration on apparent viscosity was obtained. Taking the influence of interfacial area concentration into consideration, a simple and accurate viscosity model was established based on dimensional analysis, which is of great significance for process design in gathering and transportation systems.

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Section: Introductionsupporting

confidence: 91%