Influence of chemical reagents and surfactants on rheological properties of Rodino and Baklanovo crude oils

2012 ◽  
Vol 48 (5) ◽  
pp. 367-371 ◽  
Author(s):  
R. N. Shiryaeva ◽  
F. Kh. Kudasheva ◽  
E. D. Batyrova
Keyword(s):  
Rheological Properties ◽  
Crude Oils ◽  
Chemical Reagents

Effect of ammonium-containing polyalkyl acrylate on the rheological properties of crude oils with different ratio of resins and waxes

2016 ◽  
Vol 146 ◽  
pp. 96-102 ◽  
Author(s):  
Irina V. Litvinets ◽  
Irina V. Prozorova ◽  
Natalya V. Yudina ◽  
Oleg A. Kazantsev ◽  
Alexey P. Sivokhin
Keyword(s):  
Rheological Properties ◽  
Crude Oils

scholarly journals Ultrasonic and Heat Treatment of Crude Oils

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3084 ◽  
Author(s):  
Aidar Kadyirov ◽  
Julia Karaeva
Keyword(s):  
Heat Treatment ◽  
Crude Oil ◽  
Rheological Properties ◽  
Experimental Method ◽  
Ultrasonic Treatment ◽  
Experimental Studies ◽  
High Viscosity ◽  
Crude Oils ◽  
Rheological Characteristics ◽  
Thermal Heating

One of the methods of influence on rheological properties of heavy high-viscosity crude oils is ultrasonic treatment. Ultrasonic treatment allows reducing the viscosity of crude oil and, therefore, reducing the costs of its production and transportation. In this paper, the influence of ultrasonic treatment on the rheological characteristics of crude oil (sample No. 1 API = 29.1, sample No. 2 API = 15.9) was investigated. An experimental method was developed. Experimental studies were carried out using the Physica MCR 102 rheometer. The influence of the intensity and duration of ultrasonic treatment on the viscosity of the initial crude oils was studied for 24 h. In addition, the rheological characteristics of the treated oil were investigated after its natural cooling to 293 K. The results are compared with similar results for thermal heating.

scholarly journals Binary mixtures of two anionic polysaccharides simulating the rheological properties of oxidised starch

2017 ◽  
Vol 31 (1) ◽  
pp. 117-128
Author(s):  
Marek Sikora ◽  
Anna Dobosz ◽  
Greta Adamczyk ◽  
Magdalena Krystyjan ◽  
Stanisław Kowalski ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Xanthan Gum ◽  
Binary Systems ◽  
Potato Starch ◽  
Hysteresis Loops ◽  
Chemical Reagents ◽  
Structural Recovery ◽  
Anionic Polysaccharides ◽  
Modified Starches ◽  
Constant Shear Rate

Abstract Modifications of starches are carried out to improve their industrial usefulness. However, the consumers prefer natural products. For this reason, various methods of starch properties modification are applied to replace those requiring the use of chemical reagents. The aim of this study was to determine whether it is possible to use binary pastes, containing normal potato starch and xanthan gum, as substitutes of chemically modified starches (with oxidised starch E 1404 pastes as an example). Flow curves with hysteresis loops, apparent viscosity at constant shear rate of 50 s−1 and in-shear structural recovery test with pre-shearing were applied to study the rheological properties of the pastes. It was found that two anionic hydrocolloids, potato starch and xanthan gum, can form binary systems with thickening properties, provided that their proportions are adequately adjusted. Some of the binary pastes under investigation exhibited rheological properties resembling pastes of starch oxidised with hypochlorite (E 1404). The way of tailoring the binary pastes properties is presented.

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