Abstract

This study covers the laboratory tests results of a chemical composition intended to intensify the production of high-viscosity oil and at the same time to reduce the watercut of the products extracted, by limiting the water inflow to the well. Watering out of the well products due to the breakthrough of contour waters along the more permeable part of the layer and coning of the layer water when developing reserves of high-viscosity oil – these are the actual problems in oil production.

This study is aimed at developing a reagent based on a mixture of various surface-active substances (surfactants) and alkali to intensify the production of high-viscosity oil and at the same time limit water inflow.

The experimental part of the study shows the behavior of the composition in a porous medium taking as an example a bulk model of oil and water saturated core, as well as a core model with residual oil saturation. The results of the leak-off tests confirmed the effectiveness of the composition developed.

Thus, the developed chemical composition has a selective effect: it allows intensifying the production of high-viscosity oil and at the same time limiting water inflow, ensuring inflow profile modification in producing wells.

Key words:

surfactants, high-viscosity oil, water control, intensify the production, filtration tests, selective effect

References

Shmelev P. TRIZ kak ob"ektivnaya real'nost' [Hard-to-recover reserves as the objective reality]. Sibirskaya neft', No 2/149, March 2018, p. 18. (in Russian)

Sultanov A.S., Nasybullin A.V., Satarov R.Z. Otsenka effektivnosti geologo-tekhnicheskikh meropriyatiy pri razrabotke mestorozhdeniy vysokovyazkoy nefti [Assessment of the efficiency of production enhancement operations during development of highly viscous oil fields]. Neftyanoye Khozyaistvo, No. 7, 2008, pp.54-57. (in Russian)

Babitskaya K.I., Konovalov V.V., Car'kov I.V. Mitsellyarny rastvor selektivnogo deystviya dlya intensifikatsii dobychi vysokovyazkoy nefti i ogranicheniya vodo-pritoka [Micellar solution with selective action for stimulation of highly viscous oil production and water shut-off treatments]. Neftepromyslovoye delo, 2016, No. 8, pp. 31-34. (in Russian)

Gilaev G.G. Povyshenie effektivnosti vyrabotki trudnoizvlekaemykh zapasov na slozhnopostroennykh neftegazovykh mestorozhdeniyakh [Improving the efficiency of the development of hard-to-recover reserves in complex oil and gas fields]. Krasnodar: Sovetskaya Kuban' Publ., 2003, 304 p. (in Russian)

Gimatutdinov Sh.K. Spravochnoe rukovodstvo po proektirovaniyu razrabotki i eks-pluatatsii neftyanykh mestorozhdeniy // Dobycha nefti [Instruction manual for oil reservoir and production engineering]. Мoscow: Nedra Publ., 1983, 455 p. (in Russian)

Shchurov V.I. Tekhnologiya i tekhnika dobychi nefti [Technology and equipment for oil production]. Мoscow: Nedra Publ., 1983, 510 p. (in Russian)

Charnyj I.A. Podzemnaya gidrogazodinamika [Subsurface fluid and gas dynamics]. Moscow: Gostoptekhizdat Publ., 1963, 396 p. (in Russian)

Authors

O.V. Gladunov, Deputy General Director for Production Development, «Samaraneftegaz JSC»
50, Volzhsky Ave., Samara, 443071, Russian Federation
E-mail: sng_drazv_p@samng.rosneft.ru

S.A. Kozlov, Head of the Department, Department of Scientific and Technical Development and Innovation, "Samaraneftegaz JSC"
50, Volzhsky Ave., Samara, 443071, Russian Federation
E-mail: kozlovSA@samng.rosneft.ru

I.V. Tsarkov, Senior Lecturer of the Department "Development and Operation of Oil and Gas Fields", Samara State Technical University
244, Molodogvardeyskaya st., Samara, 443100, Russian Federation
E-mail: tsarkov.igor.samara@gmail.com

K.I. Babitskaya, PhD, Associate Professor of the Department "Development and Operation of Oil and Gas Fields", Samara State Technical University
244, Molodogvardeyskaya st., Samara, 443100, Russian Federation
E-mail: babitskayaki@gmail.com

V.E. Chomaryan, Student, Samara State Technical University
244, Molodogvardeyskaya st., Samara, 443100, Russian Federation
E-mail: vard77@icloud.com

For citation:

O.V. Gladunov, S.A. Kozlov, I.V. Tsarkov, K.I. Babitskaya, V.E. Chomaryan Intensifikacija dobychi vysokovjazkoj nefti s odnovremennym ogranicheniem vodopritoka himicheskimi rastvorami selektivnogo dejstvija [Enhancement of high-viscosity index oil recovery and at the same time limit water inflow by chemical composition with a selective effect]. Neftyanaya Provintsiya, No. 3(27), 2021. pp. 67-83. DOI https://doi.org/10.25689/NP.2021.3.67-83 (in Russian)