The results of the influence of water content and temperature on the values of their viscosity-temperature characteristics, the amount of wax deposit and the effectiveness of the inhibitory additive are presented in this paper. An increase in temperature of emulsion formation and water content in emulsion leads to the formation of a temperature-viscous structure, which causes an increase in temperature, dynamic viscosity, energy of a viscous transition and a shift of phase transitions to a higher temperature region. The amount of wax deposit in the emulsion increases with increasing temperature of emulsion formation: the minimum amount of wax deposit at an emulsion formation temperature of 10°C, and maximum - at a temperature of 40–60°C. The degree of inhibition of additives slightly increases with the temperature of formation of emulsions. The maximum inhibitory ability of the additive is manifested in emulsions with a formation temperature of 20–40°C with water content of 10%wt. With an increase in the temperature of formation of emulsions, the pour point of the samples significantly increases. The depressant effect of the additive decreases when water content in emulsions increase. The maximum depressant effect is characteristic of emulsion samples with a formation temperature of 10–20°C and an water content of 10, 30%wt.
References
1. Tumanyan B.P., Nauchnye i prikladnye aspekty teorii neftyanykh dispersnykh sistem (Scientific and applied aspects of the theory of oil dispersed systems), Moscow: of Tekhnika Publ., 2000, 336 p.
2. Ibragimov N.G. et al., Oslozhneniya v neftedobyche (Complications in oil production): edited by Ibragimov N.G., Ishemguzhin E.I., Ufa : Monografiya Publ., 2003, 301 p.
3. Sakhabutdinov R.Z., Gubaydulin F.R., Ismagilov I.Kh., Kosmacheva T.F., Osobennosti formirovaniya i razrusheniya vodoneftyanykh emul'siy na pozdney stadii razrabotki neftyanykh mestorozhdeniy (Features of formation and destruction of oil-water emulsions at a late stage of oil field development), Moscow: Publ. of OAO “VNIIOENG”, 2005, 324 p.
4. Moriceau G., Lester D. et al., Well-defined alkyl functional poly(sterene-co-maleic anhydride) architectures as pour point and viscosity modifiers for lubricating oil, Energy&Fuels, 2019, V. 33(8), pp. 7257–7264.
5. Kazantsev O.A., Volkova G.I., Prozorova I.V. et al., Poly(alkyl(meth)acrylate) depressants for paraffin oils, Petroleum Chemistry, 2016, no. 56, pp. 68–72.
6. Terteryan R.A., Depressornye prisadki k neftyam, toplivam i maslam (Depressant additives to crude oil, fuels and oils), Moscow: Khimiya Publ., 1990, 234 p.
7. Agaev S.G., Zemlyanskiy E.O., Grebnev A.N., Khalin A.N., O mekhanizme deystviya ingibitorov parafinovykh otlozheniy (On the mechanism of action of paraffin wax inhibitors), Proceedings of all-Russian scientific and technical conference “Neft' i gaz Zapadnoy Sibiri” (Oil and gas of Western Siberia), Part 1, 2007, pp. 219–222.
8. Evdokimov I.N., Losev A.P., Petroleum nanotechnologies - overcoming stereotypes (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2008, no. 8, pp. 12–15
9. Evdokimov I.N., Eliseev N.Yu., Influence of asphaltenes on the thermal properties of oil and bitumen emulsions (In Russ.), Khimiya i tekhnologiya topliv i masel, 2002, no. 6, pp. 26–29.
10. Vygovskoy V.P., Daneker V.A., Rikkonen S.V., Teplov A.I., Energetika gidromekhanicheskogo razrusheniya struktury vysokoparafinistykh neftey (Energy of hydromechanical destruction of the structure of highly paraffinic oils), Collected papers “Avtomatizatsiya i informatsionnoe obespechenie tekhnologicheskikh protsessov v neftyanoy promyshlennosti” (Automation and information support of technological processes in the oil industry), Proceedings of NPF Geofit VNK: edited by Khor'kov A.K., 2002, V. 2, pp. 224–229.
11. Loskutova Yu.V. et al., Raschet energeticheskikh parametrov gidromekhanicheskogo razrusheniya struktury neftey (Calculation of energy parameters of hydromechanical destruction of the structure of oils), Collected papers “Problemy khimii nefti i gaza” (Problems of chemistry of oil and gas), Tomsk: Publ. of IAO SB RAS, 2004, pp. 235–237.
12. Litvinets I.V., Prozorova I.V., Yudina N.V. et al., Effect of ammonium-containing polyalkylacrylate on the rheological properties of crude oils with different ratio of resins and waxes, Journal of Petroleum Science and Engineering, 2016, V. 146, pp. 96–102.
13. Zhang Y., Gong J., Ren Y., Wang P., Effect of emulsion characteristics on wax deposition from water-in-waxy crude oil emulsions under static cooling conditions, Energy & Fuels, 2010, V. 24, pp. 1146–1155.
