IIn the last three decades, polymer-based anti-turbulent additives have been widely used in the Russian Federation in order to reduce hydrodynamic resistance when pumping oil and oil products through main pipelines and thus to reduce energy costs. The hydrodynamic properties of presently available commercial additives of Russian and foreign manufacture were experimentally studied in a laboratory environment and then a comparison was made of their anti-turbulent properties. Anti-turbulent properties of additives were tested in two hydrocarbon solvents (gasoline and oil) using a turbulent rheometer. It was determined that the transition from one solvent to another is accompanied by a change in the efficiency of additives depending on the physicochemical nature of the solvents and their rheological properties. It has been found out that the optimal concentration, at which the maximum effect of hydrodynamic drag reduction was achieved, was one and a half times higher in oil than in gasoline. The obtained pattern was a consequence of the presence of heavy components (resins, asphaltenes, and high molecular weight paraffins) in oil. High molecular weight polymers were partially adsorbed on these components and, therefore, the content of the hydrodynamically active component in solution decreased. Thus, the optimal concentrations of the polymer in oil are higher than in gasoline, hence more polymer is required the pipeline transportation of oil requires more polymer than the pumping of light oil products. It has been found out that oil-soluble additives from Russian manufacturers are not inferior in their performance to imported analogues. All additives are based on natural hydrocarbons, so they are fully compatible with oil and do not adversely affect the pipeline network and subsequent oil refining.
References
1. Bakhtizin R.N., Gareev M.M., Lisin Yu.V. et al., Nanotekhnologii dlya snizheniya gidravlicheskogo soprotivleniya truboprovodov (Nanotechnologies to reduce the hydraulic resistance of pipelines), St. Petersburg: Nedra Publ., 2018, 352 p.
2. Burger E.D., Munk W.R., Wahl H.A., Flow increase in the Trans Alaska Pipeline through use of a polymeric drag reducing additive, Journal of Petroleum Technology, 1982, V. 34, no. 2, pp. 377–386, DOI: https://doi.org/10.2118/9419-PA
3. Mut Ch., Monakhen M., Peseto L., The use of special additives to reduce the cost of operating pipelines (In Russ.), Neft, gaz i neftekhimiya za rubezhom, 1986, no. 7, pp. 60–62.
4. Gareev M.M., Nesyn G.V., Manzhay V.N., The results of addition to the oil flow for reduce the hydraulic resistance (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 1992, no. 10, pp. 30–31.
5. Nesyn G.V., Manzhay V.N., Popov E.A. et al., Experiment to reduce hydrodynamic resistance on the main pipeline Tikhoretsk-Novorossiysk (In Russ.), Truboprovodnyy transport, 1993, no. 4, pp. 28–30.
6. Nesyn G.V., Sunagatullin R.Z., Shibaev V.P., Malkin A.Y., Drag reduction in transportation of hydrocarbon liquids: From fundamentals to engineering applications, Journal of Petroleum Science and Engineering, 2018, V. 161, pp. 715–725, DOI: https://doi.org/10.1016/j.petrol.2017.10.092
7. Абдусалямов А.В., Манжай В.Н., Antiturbulent suspension additives for a pipeline transportation of oil (In Russ.), Известия вузов. Нефть и газ, 2013, no. 4, pp. 102–106.
8. Konovalov K.B., Abdusalyamov A.V., Manzhay V.N. et al., Comparative study of the effect of antiturbulent additives for hydrocarbon liquids (In Russ.), Kratkie soobshcheniya po fizike FIAN = Bulletin of the Lebedev Physics Institute, 2015, no. 12, pp. 36–42.
9. Manzhai V.N., Echevskaya L.G., Ilyushnikov A.V. et al., Antiturbulent powers of higher polyolefins and olefin terpolymers (In Russ.), Журнал прикладной химии = Russian Journal of Applied Chemistry, 2004,V. 77, no. 3, pp. 456–460.
10. Tavtorkin A.N., Gavrilenko I.F., Kostitsyna N.N. et al., Comparison of the turbulent drag reduction effectiveness of polymers from higher olefin monomers (hexene, octene, decene, dodecene) in the production of hydrodynamic drag reducing agents for transportation of hydrocarbon liquids (In Russ.), Журнал прикладной химии = Russian Journal of Applied Chemistry, 2020, V. 93, no. 6, pp. 788–793, DOI: 10.31857/S004446182006002X
11. Gareev M.M., Lisin Yu.V., Manzhay V.N., Shammazov A.M., Protivoturbulentnye prisadki dlya snizheniya gidravlicheskogo soprotivleniya truboprovodov (Antiturbulent additives to reduce the hydraulic resistance of pipelines), St. Petersburg: Nedra Publ., 2013, 228 p.
12. Manzhai V.N., Nasibulina Yu.R., Kuchevskaya A.S., Filimoshkin A.G., Physico-chemical concept of drag reduction nature in dilute polymer solutions (the Toms effect), Chemical Engineering and Processing: Process Intensification, 2014, V. 80, pp. 38–42, DOI:10.1016/j.cep.2014.04.003
13. Manzhay V.N., Nosikova Yu.R., Abdusalyamov A.V., Degradation of polymer solutions in a turbulent flow in a cylindrical channel (In Russ.), Журнал прикладной химии = Russian Journal of Applied Chemistry, 2015, V. 88, no. 1, pp. 125–131.
14. Manzhay V.N., Effect of anti-turbulent additives on the flow of hydrocarbon fluids at low temperatures (In Russ.), Нефтяное хозяйство = Oil Industry, 2018, no. 3, pp. 92–96, DOI: 10.24887/0028-2448-2018-3-92-96
15. Virk P.S., Drag reduction fundamentals, AIChE Journal, 1975, V. 21, no. 4, pp. 625–246, DOI: https://doi.org/10.1002/aic.690210402
