The article examines the factors that determine the effectiveness of demulsifiers (DE) for dehydrating high-viscosity oils on the example of MACROMER Company fundamental research. It is shown that demulsifiers produced by MACROMER Company are not only as effective as imported reagents, but even exceed their demulsifying efficiency. However, the development of fully domestic DE requires the correct reagents selection and their mixtures optimization. For example, it is established that reagents with a molar mass of about 6000-7000 g/mol have the maximum demulsifying efficiency for dehydrating high-viscosity oils. And to optimize the composition of DE, a special dielectric method is proposed, which enables to determine the intermolecular interactions. It is substantiated that in highly efficient DE these interactions should be maximal. It is also established that to achieve qualitative dehydration of high-viscosity water-in-oil emulsions, it is necessary to ensure intensive mixing of the emulsions with DE. As a result of these studies, new demulsifiers were developed that can dehydrate even very high viscosity, almost non-flowable emulsions at no more than 200 g/t of oil dosages. The peculiarity of these demulsifiers was their ability to reduce the viscosity of highly viscous crude oils by several times and reduce the viscosity of emulsions from such oils.
References
1. Semikhina L.P., Kovaleva I.V., Antipova E.A. et al., Import-substituting demulsifiers produced by the Science Development Production Company MACROMER in the name of V.S. Lebedev and the scientific basis of their development (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2024, no. 4, pp. 103-106,
DOI: https://doi.org/10.24887/0028-2448-2024-4-103-106
2. Yakhin B.A., Povyshenie effektivnosti podgotovki nefti na promyslakh za schet primeneniya usovershenstvovannykh struynykh gidravlicheskikh smesiteley s vikhrevymi ustroystvami (Improving the efficiency of oil treatment at the fields through the use of improved hydraulic jet mixers with vortex devices): thesis of candidate of technical science, Ufa, 2022.
3. Patent RU 2301253 C1, Method of revealing synergetic effect in composite demulsifiers from low-frequency dielectric measurements, Inventors: Semikhina L.P., Semikhin D.V.
4. Semikhina L.P., Nizkochastotnaya diel’kometriya zhidkostey v slabykh vikhrevykh elektricheskikh polyakh (Low-frequency dielectric metering of liquids in weak vortex electric fields): thesis of doctor of physical and mathematical sciences, Tyumen’, 2001.
5. Semikhina L.P., Plotnikova D.V., Perekupka A.G., Zhuravskiy D.V., Demulsifiers effectiveness increase due to their nano-modifications production (In Russ.), Vestnik Tyumenskogo gosudarstvennogo universiteta, 2009, no. 6, pp. 88–93.
6. Patent RU 2413754 C1, Procedure for separation of water-oil emulsions with utilisation of nano de-emulsifiers, Inventor: Semikhina L.P.
7. Ivanov S.S., Tarasov M.Y., On conducting additional experimental studies of the properties of reservoir fluids in the design of oil field development (In Russ.), PRONEFT’’. Professional’no o nefti = PROneft. Professionally about Oil, 2021, no.1, pp. 83-87, DOI: https://doi.org/10.51890/2587-7399-2021-6-1-83-87
8. Gonzalo R., Hallahan G., The effects of high efficiency mixers and critical process variables in the optimization of demulsifiers injection rates, Petrochemicals Middle East, 2021, no 1, pp. 24-27, URL: https://www.prosep.com/wp-content/uploads/2021/01/RPME-JANUARY-2021-P24-27-LR.pdf
9. Kazartsev E.V., Osnovy sozdaniya strueinzhektsionnogo smesitelya s sinkhronizatsiey dozirovaniya deemul’gatora dlya intensifikatsii obessolivaniya i obezvozhivaniya nefti (Fundamentals of creating a jet-injection mixer with synchronized dosing of demulsifier for intensifying desalination and dehydration of oil): thesis of candidate of technical science, Ukhta, 2020.
10. Sidorov G.M., Yakhin B.A., Akhmetov R.F., Modeling process of static mixers (oil-water) for desalting crude oil and pilot-industrial testing (In Russ.), Uspekhi sovremennogo estestvoznaniya = Advances in current natural sciences, 2017, no. 2, pp. 152–156, URL: https://natural-sciences.ru/ru/article/view?id=36378
11. Pat. RU 159236 U1, MPK B01F 5/00, Struynyy gidravlicheskiy smesitel’ (Struynyy gidravlicheskiy smesitel’), Inventors: Galiakbarov V.F., Galiakbarova E.V., Yakhin B.A.
12. Grokhotova E.V., Mukhina N.M., Sidorov G.M., Study of oil dehydration methods in Kaliningrad region (In Russ.), Neftegazovoe delo, 2019, no. 3, pp. 251–267,
DOI: https://doi.org/10.17122/ogbus-2019-3-251-267
13. Myakishev E.A., Sovershenstvovanie tekhnologii podgotovki nefti v apparate s pryamym podogrevom i koalestsiruyushchimi elementami (Improving the technology of oil preparation in a device with direct heating and coalescing elements): thesis of candidate of technical science, Tyumen, 2022.
14. Mukhamadeev R.U., Intensifikatsiya protsessa rassloeniya vodoneftyanykh emul’siy vysokovyazkikh neftey (Intensification of the process of stratification of water-oil emulsions of high-viscosity oils): thesis of candidate of technical science, Ufa, 2020.
15. Sudykin S.N., Sovershenstvovanie tekhnologiy obezvozhivaniya tyazhelykh neftey Permskoy sistemy Respubliki Tatarstan (Improving technologies for dehydration of heavy oils of the Perm system of the Republic of Tatarstan): thesis of candidate of technical science, Bugul’ma, 2011.
16. Rakitin A.R., Pappel K.Kh., Kiselev S.A., Hydrophilic-lipophilic balance of domestic oilfield demulsifiers in current use (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2023, no. 10, pp. 104-108, DOI: https://doi.org/10.24887/0028-2448-2023-10-104-108
Юбилей Великой Победы
В юбилейном 2025 году подготовлены: - специальная подборка статей журнала, посвященных подвигу нефтяников в годы Великой Отечественной войны; - списки авторов публикаций журнала - участников боев и участников трудового фронта. |
