Study of the physical, chemical and rheological properties of oil mixtures transported through the Uzen – Atyrau – Samara pipeline

Sayakhov B.K. Didukh A.G. Gabsattarova G.A. Nasibulin M.D. Nauruzbekov Z.K.
2021 Transneft Media, LLC

Science and Technologies: Oil and Oil Products Pipeline Transportation
2021 #11 Issue 4 420 - 427 pp.

At the initial sections of the Uzen – Atyrau – Samara main oil pipeline, batches of low pour point Buzachinsky and high pour point Mangyshlak oils are formed. Additional pumping of oils with different physical, chemical and rheological characteristics is carried out along the transportation route, which can have a significant effect on the properties of the pumped oil mixtures. The purpose of this study is to examine the physical, chemical and rheological properties of Buzachi and Mangyshlak oil mixtures on the Uzen – Atyrau supply route, as well as the range and causes of changes in the characteristics of Buzachinsky oil (the main oil mixture in the blend composition pumped through the Uzen – Atyrau – Samara pipeline). According to the research results, it was found that the properties of the Mangyshlak oil mixture vary within insignificant limits. The Buzachinsky oil mixture is characterized by instability of rheological parameters, which can vary in a wide range as a result of route pumping at different pipeline sections. Fluctuations of the rheological parameters of the most indicative samples of batches of the Buzachinsky oil mixture are recommended to be taken into account in order to increase the fluidity of high-viscosity oils and optimize the process modes of operation of pipelines through which such oils are pumped. Using the methods of gas chromatographic analysis of the molecular weight distribution of high-melting-point paraffins, as well as polarization microscopy, the optimal heating temperature for the introduction of a pour point depressant into the Buzachinsky and Mangyshlak oil mixtures has been determined.

High-viscosity oil , Physical and chemical properties of oil , Pour point depressant , Rheological properties of oil

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KazTransOil, JSC, 20 Turan Prospect, Nur-Sultan, 010000, Kazakhstan
Research and Development Centre of KazTransOil, JSC, 154 Zhibek zholy Str, Almaty, 050000, Kazakhstan

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