Study of various factors influence on thixotropic properties of the Buzachi-Mangyshlak oil mixture transported through the main oil pipeline Uzen – Atyrau – Samara
Saiyahov B.K. Didukh A.G. Gabsattarova G.A. Boranbaeva L.E. Nasibulin M.D.
2023Neftyanoe Khozyaistvo
Neftyanoe Khozyaystvo - Oil Industry
2023#2023Issue 793 - 97 pp.
The article presents the results of laboratory study of the stability of the rhe-ological parameters of oil mixture passing through a pump, and transported through the Atyrau – Uzen-Samara main pipeline. As an object for research we used two batch oil mixtures that differing in properties: Buzachi and Mangyshlak oil mixtures selected inlet T. Kasymova pumping station. The Mangyshlak oil mixture is characterized by a high content of waxes, which causes a high pour point temperature. The Buzachi oil mixture is characterized by a high content of resins and, accordingly, a high density. Results of mixtures modeling and studying showed, the highly paraffinic Mangyshlak oil is main component that affects the processes of structuring and, conse-quently, thixotropic properties of Buzachi-Mangyshlak oil mixtures. There were observed the most typical curves for thixotropic fluids at temperatures corresponding to or bordering on the fluidity loss temperature of the oil mixture-a gradual increase in the shear rate leads to shear deformation and de-struction of the structured oil dispersed system, but with a decrease in the shear rate, a gradual restoration of the structure occurs. Highly solidifying Buzachi-Mangyshlak oil mixtures have thixotropic properties, due to which the structure and rheological properties of oil can be restored after prolonged and significant deformation effects, such as the passage of oil through a pump. In this case, the introduction of a depressant additive not only leads to a decrease in the rheological parameters of the oil mixture, but also con-tributes to a reduction in the time of the thixotropic response of the oil-dis-persed system to shear effects. The study of the influence of the composi-tion, depressant additives, temperature, and deformation conditions on the rheological and thixotropic properties is of great importance in the study of the possibilities of regulating the rheological parameters of anomalous oils. In addition, the obtained data are necessary for carrying out thermal-hydraulic calculations and determining the conditions for safe oil pumping.
composition , deformation effects , depressant additive , oil mixture , rheological properties , thixotropy
Text of the article Перейти на текст статьи
Research and Development Center Branch of KazTransOil JSC, Almaty, Kazakhstan
Research and Development Center Branch of KazTransOil JSC
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026