Effects of Mixing Conditions, Oil Type and Aqueous Phase Composition on Some Crude Oil Emulsions

2005 ◽  
Vol 5 (5) ◽  
pp. 873-877 ◽  
Author(s):  
O. Omole ◽  
O.A. Falode .
Keyword(s):  
Phase Composition ◽  
Crude Oil ◽  
Aqueous Phase ◽  
Mixing Conditions ◽  
Oil Emulsions ◽  
Oil Type

scholarly journals Microwave demulsification of heavy crude oil emulsions: Analysis of acid species recovered in the aqueous phase

Fuel ◽  
2014 ◽  
Vol 128 ◽  
pp. 141-147 ◽  
Author(s):  
Elisângela B. da Silva ◽  
Denisson Santos ◽  
Mayara Paes de Brito ◽  
Regina C.L. Guimarães ◽  
Bianca M.S. Ferreira ◽  
...  
Keyword(s):  
Crude Oil ◽  
Aqueous Phase ◽  
Heavy Crude Oil ◽  
Heavy Crude ◽  
Oil Emulsions

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

2018 ◽  
Vol 2 (4) ◽  
pp. 64 ◽  
Author(s):  
Daria S. Kolotova ◽  
Yuliya A. Kuchina ◽  
Lyudmila A. Petrova ◽  
Nicolay G. Voron’ko ◽  
Svetlana R. Derkach
Keyword(s):  
Crude Oil ◽  
Aqueous Phase ◽  
North Sea ◽  
Loss Modulus ◽  
Viscoelastic Behavior ◽  
High Viscosity ◽  
Phase Content ◽  
Oil Emulsion ◽  
The North ◽  
Oil Emulsions

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.

Effect of Aqueous Phase Composition on Stability of Sodium Caseinate/Sunflower oil Emulsions

2012 ◽  
Vol 6 (9) ◽  
pp. 2406-2418 ◽  
Author(s):  
Cristián Huck-Iriart ◽  
Víctor M. Pizones Ruiz-Henestrosa ◽  
Roberto J. Candal ◽  
María L. Herrera
Keyword(s):  
Phase Composition ◽  
Aqueous Phase ◽  
Sunflower Oil ◽  
Sodium Caseinate ◽  
Oil Emulsions

Demulsification of a Water-in-crude Oil Emulsion with a Corn Oil BasedDemulsifier using the Response Surface Methodology: Modelling and Optimization

2021 ◽  
Vol 14 ◽  
Author(s):  
Abed Saad ◽  
Nour Abdurahman ◽  
Rosli Mohd Yunus
Keyword(s):  
Response Surface Methodology ◽  
Crude Oil ◽  
Water Content ◽  
Response Surface ◽  
Separation Efficiency ◽  
Corn Oil ◽  
Oil Emulsion ◽  
Optimal Values ◽  
Input Variables ◽  
Oil Emulsions

: In this study, the Sany-glass test was used to evaluate the performance of a new surfactant prepared from corn oil as a demulsifier for crude oil emulsions. Central composite design (CCD), based on the response surface methodology (RSM), was used to investigate the effect of four variables, including demulsifier dosage, water content, temperature, and pH, on the efficiency of water removal from the emulsion. As well, analysis of variance was applied to examine the precision of the CCD mathematical model. The results indicate that demulsifier dose and emulsion pH are two significant parameters determining demulsification. The maximum separation efficiency of 96% was attained at an alkaline pH and with 3500 ppm demulsifier. According to the RSM analysis, the optimal values for the input variables are 40% water content, 3500 ppm demulsifier, 60 °C, and pH 8.

Dispersion Flow in Microchannels

2012 ◽  
Author(s):  
Alfir T. Akhmetov ◽  
Marat V. Mavletov ◽  
Sergey P. Sametov ◽  
Artur A. Rakhimov ◽  
Azat A. Valiev ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Effective Viscosity ◽  
Complex Structure ◽  
Experimental Investigations ◽  
Dispersed Phase ◽  
Rheological Characteristics ◽  
Dense Structure ◽  
The Third ◽  
Dynamic Blocking ◽  
Oil Emulsions

The work is devoted to experimental investigations of the features of flow of dispersions in microchannels. The paper consists of three parts. In the first part the flow of emulsions in smooth contracting cylindrical microchannels is investigated. It is received that a significant role at dynamic blocking of channels is played by the inclusions comparable by size to the diameter of a narrowing. This is in spite of the fact that their influence on the change of a flow rate of emulsion before blocking is insignificant. In the second part the generation of emulsion in a complex structure of microchannels (micromodels) when water is displaced by composition of hydrocarbon with surfactants is investigated. The experimental dependences of the rheological characteristics of emulsions based on the composition of SAS and water at different concentrations of the aqueous phase can explain blocking of a porous structure by generated emulsion. In the third part a comparison of flow of water-in-oil emulsions with the suspension which was obtained by freezing the microdroplets of the aqueous phase of emulsions was studied. It was found that the blocking of suspension is not as complete as in the case of emulsion. It is explained by deformation of the droplets and by formation of a dense structure, as opposed to suspension of beads, through which hydrocarbon phase is filtered. A small increase in effective viscosity due to solidification of freezing droplets of the dispersed phase was found.

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