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Enhanced oil recovery from high-viscosity oil deposits by acid systems based on surfactants, coordining solvents and complex compounds

L.K. Altunina, V.A. Kuvshinov, L.A. Stasyeva, I.V. Kuvshinov

Original article

DOI https://doi.org/10.18599/grs.2019.4.103-113

103-113
rus.
eng.

open access

Under a Creative Commons license

Physicochemical aspects of enhanced oil recovery (EOR) from heavy high-viscosity deposits, developed in natural mode and combined with thermal methods, using systems based on surface-active substances (surfactants), coordinating solvents and complex compounds are considered, which  chemically evolve in situ  to acquire colloidal-chemical properties that are optimal for oil displacement. Thermobaric reservoir conditions, interactions with reservoir rock and fluids are the factors causing the chemical evolution of the systems.

To enhance oil recovery and intensify the development of high-viscosity deposits, acid oil-displacing systems of prolonged action based on surfactants, inorganic acid adduct and polyatomic  alcohol have been created. As a result of experimental studies of acid-base equilibrium in the systems with donor-acceptor interactions – polybasic inorganic acid and polyol, the influence of electrolytes, non-electrolytes and surfactants, the optimal compositions of the systems were selected, as well as concentration ranges of the components in the acid systems. When the initially acid system interacts with the carbonate reservoir to release CO2, the oil viscosity decreases 1.2-2.7 times, the pH of the system rises and this system evolves chemically turning into an alkaline oil-displacing system. As a result it provides effective oil displacement and prolonged reservoir stimulation. The system is compatible with saline reservoir waters, has a low freezing point (minus 20 ÷ minus 60 oC), low interfacial tension at the oil boundary and is applicable in a wide temperature range, from 10 to 200 oC.

In 2014-2018 field tests of EOR technologies were successfully carried out to intensify oil production in the test areas of the Permian-Carboniferous deposit of high-viscosity oil in the Usinsk oil field, developed in natural mode and combined with thermal-steam stimulation, using the acid oil-displacing system based on surfactants, coordinating solvents and complex compounds. The pilot tests proved high efficiency of EOR technologies, as far as the oil production rate significantly increased, water cut decreased to intensify the development. The EOR technologies are environmentally safe and technologically effective. Commercial use of the EOR is promising for high-viscosity oil deposits.

 

high-viscosity oils, enhanced oil recovery, physicochemical technologies, acid oil-displacing systems, surfactants, polybasic acids, polyols, coordinating compounds, acid-base equilibrium, СО2, rheology, viscosity, the Usinsk oilfield, pilot tests

 

  • Altunina L.K., Kuvshinov V.A. (2007). Physical and chemical methods for enhanced oil recovery (review). Uspekhi khimii = Russian Chemical Reviews, 76(10), pp. 1034-1052. (In Russ.)
  • Altunina L.K., Kuvshinov V.A. (2008). Improved oil recovery of high-viscosity oil pools with physicochemical methods at thermal-steam treatments. Oil&Gas Science and Technology, 63(1), pp. 37-48. https://doi.org/10.2516/ogst:2007075
  • Altunina L.K., Kuvshinov V.A., Kuvshinov I.V. (2016a). «Cold» technologies for enhanced oil recovery from high-viscosity oil pools in carbonate reservoirs. Proc. 7th EAGE Saint Petersburg International Conference and Exhibition, Saint Petersburg, paper Th A 04. https://doi.org/10.3997/2214-4609.201600228
  • Altunina L.K., Kuvshinov V.A., Kuvshinov I.V., Chertenkov M.V., Ursegov S.O. (2015). Pilot tests of new EOR technologies for heavy oil reservoirs. Proc. SPE Russian Petroleum Conference, Moscow, paper 176703-MS. https://doi.org/10.2118/176703-RU
  • Altunina L.K., Kuvshinov V.A., Kuvshinov I.V., Stasyeva L.A., Chertenkov M.V., Shkrabyuk L.S., Andreev D.V. (2017a). Physical-chemical and complex EOR/IOR technologies for the Permian-Carboniferous deposit of heavy oil of the Usinskoye oil field. Neftyanoe khozyaistvo = Oil industry, 7, pp. 26-29. (In Russ.)
  • Altunina L.K., Kuvshinov V.A., Stasyeva L.A., Kuvshinov I.V., Kozlov V.V. (2016b). Oil-Displacing Surfactant Composition with Controlled Viscosity for Enhanced Oil Recovery from Heavy Oil Deposits. Georesursy = Georesources, 18(4), p. 1. pp. 281-288. http://dx.doi.org/10.18599/grs.18.4.5
  • Altunina L.K., Kuvshinov V.A., Ursegov S.O., Chertenkov M.V. (2011). Synergism of physicochemical and thermal methods intended to improve oil recovery from high-viscosity oil pools. 16th European Symposium on Improved Oil Recovery, Cambridge, UK, paper A13, 11 p. https://doi.org/10.3997/2214-4609.201404753
  • Altunina L.K., Kuvshinov I.V., Kuvshinov V.A. and Stasyeva L.A.  (2017b). Chemically evolving systems for oil recovery enhancement in heavy oil deposits. AIP Conference Proceedings, USA, v. 1909, p. 020005. https://doi.org/10.1063/1.5013686
  • Altunina, L., Kuvshinov, V., Kuvshinov, I. (2013). Promising Physical-chemical IOR Technologies for Arctic Oilfields. Society of Petroleum Engineers – SPE Arctic and Extreme Environments Conference and Exhibition, AEE, 2. pp. 1057-1082. https://doi.org/10.2118/166872-MS
  • Burzhe Zh., Surio P., Kombarnu M. (1989). Thermal enhanced oil recovery methods. Moscow: Nedra Publ., 422 p. (In Russ.)
  • Hascakir B. (2017). Introduction to thermal Enhanced Oil Recovery (EOR). Journal of Petroleum Science and Engineering, special issue, 154, pp. 438-441. https://doi.org/10.1016/j.petrol.2017.05.026
  • Kovscek A.R. (2012). Emerging challenges and potential futures for thermally enhanced oil recovery. Journal of Petroleum Science and Engineering, 98-99, pp. 130-143. https://doi.org/10.1016/j.petrol.2012.08.004
  • Kreshkov A.P. (1977). Fundamentals of analytical chemistry. Physical and physico-chemical (instrumental) methods of analysis. Book 3. Ed. 2nd. Moscow: Khimiya Publ., 488 p. (In Russ.)
  • Kuvshinov I.V., Kuvshinov V.A., Altunina L.K. (2017). Field experience of thermotropic compositions application for enhanced oil recovery. Neftyanoe khozyaistvo = Oil industry, 1, pp. 44-47. (In Russ.)
  • Muslimov R.Kh. (2012). Oil recovery: past, present, future. Kazan: Fen, 664 p. (In Russ.)
  • Rakhmankulov D.L., Kimsanov B.X., Chanyshev R.R. (2003). Physical and chemical properties of glycerin. Moscow: Khimiya Publ., 200 p. (In Russ.)
  • Romero-Zeron L. (2016). Chemical Enhanced Oil Recovery (cEOR). InTech, 200 p. https://doi.org/10.5772/61394
  • Ruzin L.M, Morozyuk O.A., Durkin S.M. (2013). Features and innovative ways of highly viscous oil field development. Neftyanoe khozyaystvo = Oil Industry, 8, pp. 51-53. (In Russ.)
  • Sharlo G. (1965). Methods of analytical chemistry. Quantitative analysis of inorganic compounds. Moscow: Khimiya Publ., 976 p. (In Russ.)
  • Sheng J.J. (2011). Modern Chemical Enhanced Oil Recovery. Gulf Publ., 617 р.
  • Shvarts E.M. (1990). The interaction of boric acid with alcohols and hydroxy acids. Riga: Zinatne Publ., 414 p. (In Russ.)
  • Shvarts E.M., Ignash R.T., Belousova R.G. (2005). Reactions of Polyols with Boric Acid and Sodium Monoborate. Russian Journal of General Chemistry, 75(11), pp. 1687-1692. https://doi.org/10.1007/s11176-005-0492-7
  •  

Lyubov K. Altunina  
Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences
4, Akademichesky Ave., Tomsk, 634055, Russian Federation
Tel: +7 (3822) 491 146. E-mail: alk@ipc.tsc.ru

Vladimir A. Kuvshinov
Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences
4, Akademichesky Ave., Tomsk, 634055, Russian Federation

Lyubov A. Stasyeva
Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences
4, Akademichesky Ave., Tomsk, 634055, Russian Federation

Ivan V. Kuvshinov
Institute of Petroleum Chemistry of the Siberian Branch of the Russian Academy of Sciences
4, Akademichesky Ave., Tomsk, 634055, Russian Federation

 

For citation:

Altunina L.K., Kuvshinov V.A., Stayeva L.A., Kuvshinov I.V. (2019). Enhanced oil recovery from high-viscosity oil deposits by acid systems based on surfactants, coordining solvents and complex compounds. Georesursy = Georesources, 21(4), pp. 103-113. DOI: https://doi.org/10.18599/grs.2019.4.103-113