TY - JOUR
T1 - Investigating the rheological properties of light crude oil and the characteristics of its emulsions in order to improve pipeline flow
AU - Meriem-Benziane, Madjid
AU - Abdul-Wahab, Sabah A.
AU - Benaicha, Mohamed
AU - Belhadri, Mansour
PY - 2012/5
Y1 - 2012/5
N2 - The objective of this study was to investigate the rheological properties of the light crude oil and its emulsions in order to obtain more knowledge about the rheological behavior of oil flow in pipelines. The experiments were carried out at a temperature of 20°C by using the RS600 RheoStress (ThermoHaake, Germany). The results showed that the viscosity of the prepared emulsions varied with their water contents. In the case of 100% light crude oil, the study of the functional relationship demonstrated the quasi-Newtonian behavior with a moderate constant viscosity. However, for emulsions with different water concentrations, their rheological behaviors were described in better way by the Ostwald de Waele and the Herschel-Bulkley models. The stability of emulsions was identified by measuring the rheological properties including non-Newtonian viscosity, the elastic modulus, (G′), the loss modulus, (G″), the phase angle (δ) and the complex viscosity (η*). The results indicated that the rheological properties and the physical stability of emulsions were significantly influenced by the water contents and the nature of crude oils.
AB - The objective of this study was to investigate the rheological properties of the light crude oil and its emulsions in order to obtain more knowledge about the rheological behavior of oil flow in pipelines. The experiments were carried out at a temperature of 20°C by using the RS600 RheoStress (ThermoHaake, Germany). The results showed that the viscosity of the prepared emulsions varied with their water contents. In the case of 100% light crude oil, the study of the functional relationship demonstrated the quasi-Newtonian behavior with a moderate constant viscosity. However, for emulsions with different water concentrations, their rheological behaviors were described in better way by the Ostwald de Waele and the Herschel-Bulkley models. The stability of emulsions was identified by measuring the rheological properties including non-Newtonian viscosity, the elastic modulus, (G′), the loss modulus, (G″), the phase angle (δ) and the complex viscosity (η*). The results indicated that the rheological properties and the physical stability of emulsions were significantly influenced by the water contents and the nature of crude oils.
KW - Loss modulus
KW - Non-Newtonian
KW - Storage modulus
KW - Stress
KW - Viscosity complex
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U2 - 10.1016/j.fuel.2011.10.007
DO - 10.1016/j.fuel.2011.10.007
M3 - Article
AN - SCOPUS:84857036964
SN - 0016-2361
VL - 95
SP - 97
EP - 107
JO - Fuel
JF - Fuel
ER -