Study of rheological behavior of systems ‘polymer solution – rocks’

UDK: 622.276.72

Key words: heavy crude oil, polymer flooding, contact angle, rheology

Authors: I.I. Mukhamatdinov, A.V. Vahin, F.A. Aliev, S.A. Sitnov (Kazan (Volga Region) Federal University, RF, Kazan)

The main problem of high-viscosity oil is the low profitability of their involvement in the development. One of the promising ways to solve the problem is to find new technologies and approaches to improve the productivity of wells and oil recovery factor. For tertiary oil recovery techniques are widely used polymer and surface-active compounds that provide a controlled increase in the viscosity of formation water and extraction residual oil. The study of intermolecular interactions in the oil reservoir should be carried out, taking into account the general properties of the reservoir rock. As a result of studies have shown differences in calcite and dolomite parameters associated with different pore morphology and the interaction of polymer molecules with a porous surface. New data on the processes occurring at the interface in the system of formation fluids - mineral. Results of the study of the surface properties and rheological behavior of various mineral reservoir rock components, selected as model, allow us to establish the effectiveness of the various polymers in the technology of polymer flooding. The principles upon which the method further reagents for assessing the effectiveness of polymer flooding is proposed which takes into account the complex phenomena which take place in the surface layer of the formation fluid in contact with the reservoir rock.
References
1. Idahosa P.E.G., Oluyemi G.F., Oyeneyin M.B., Prabhu R., Rate-dependent
polymer adsorption in porous media, Journal of Petroleum Science and Engineering,
2016, V. 143, pp. 65–71.
2. Demikhova I.I., Likhanova N.V., Hernandez P.J.R. et al., Emulsion flooding for
enhanced oil recovery: Filtration model and numerical simulation, Journal of
Petroleum Science and Engineering, 2016, V. 143, pp. 235–244.
3. Al-Hashmi A.R., Luckham P.F., Grattoni C.A., Flow-induced-microgel adsorption
of high-molecular weight polyacrylamides, Journal of Petroleum Science
and Engineering, 2013, V. 112, pp. 1–6.
4. Mohsin M.A., Attia N.F., Inverse emulsion polymerization for the synthesis of
high molecular weight polyacrylamide and its application as sand stabilizer,
International Journal of Polymer Science, 2015, Article ID 436583, 10 p.
5. Kachurin A., Sattarov R., Ayupova D., Gabdullina A., Improvement of the
technology of strata oil recovery enhancement using SoftPusher Polyacrylamide
in the fields of LUKOIL - Western Siberia OOO (In Russ.), Neftyanoe
khozyaystvo = Oil Industry, 2011, no. 8, pp. 126–128.
6. Gutina A., Axelrod E., Puzenko A., Rysiakiewicz-Pasek E., Kozlovich N., Feldman
Yu., Dielectric relaxation of porous glasses, Journal of Non-Crystalline
Solids, 1998, V. 235, pp. 302–307.