Abstract

This article is devoted to the assessment of the applicability of water alternating gas (WAG) in the conditions of the objects of the Tyumen sweet. To assess the applicability of water-gas exposure, various experiences of using this technology on low-permeability objects are considered. Field experience shows that the efficiency of WAG use depends primarily on the reservoir permeability. Simulation of various methods of stimulation (waterflooding, gas injection, WAG) on objects with low permeability indicates that gas and water-gas methods are more effective than classical waterflooding. Field experience and simulation results are supported by core studies showing high efficiency of gas stimulation techniques. The author has developed an automated utility for determining the effectiveness of the implementation of various methods based on the geological and physical characteristics of the reservoir. The results of the utility's work confirm the high potential efficiency of gas and water-gas methods at the facilities of the Tyumen sweet.

Key words:

water alternating gass, Tyumen sweet, waterflooding, low-permeability reservoir

References

Cherevko, M.A. Optimizatsiya sistemy gorizontalnykh skvazhin i treshchin pri razrabotke ultranizkopronicaemykh kollektorov [Optimization of horizontal well and fracture systems in the development of ultra-low-permeability reservoirs], PhD thesis, Tyumen, 2015, 156 p. (in Russian)

K. Joslin, S.G. Ghedan EOR in Tight Reservoirs, Technical and Economical Feasibility. SPE-185037-MS. (in English)

Zatsepin, V.V. Tekhnologicheskie osnovy vodogazovogo vozdeystviya na plasty s trudnoizvlekaemymi zapasami nefti v nizkopronicaemykh kollektorakh [Technological basis of water-alternating-gas injection in low-permeability reservoirs with hard-to-recover oil reserves], Dr.Sc. thesis, Bugulma, 2017. (in Russian)

Semenov, P.V. Effektivnost primeneniya tekhnologii gazovogo vozdeystviya na plast YUK2-9 Em-Yogovskogo LU Krasnoleninskogo NGKM [Efficiency of water-alternating-gas injection in YuK2-9 reservoir of Em-Yogovvskoye and LU reservoir of Krasnoleninskoye oil-gas-condensate fields]. Collection of articles of ХI International Research and Practice Conference for students, 2018 (in Russian)

Drozdov A.N., Egorov Yu.A., Telkov V.P., Verbickiy V.S., Dengaev A.V., Lambin D.N. Tekhnologiya i tekhnika vodogazovogo vozdeystviya na neftyanye plasty. Chast 2. Issledovanie dovytesneniya modeli nefti vodogazovymi smesyami posle zavodneniya [Technology and techniques of water-alternated-gas injection in oil reservoirs. Part 2 The study of ultimate oil displacement using water-alternated-gas injection after waterflooding.]. Territoriya Neftegaz [Oil and Gas Territory], 2006, No. 3, pp. 48-51. (in Russian)

Hassan Aziz, A review on nanofluid water alternating gas (N-WAG), Arabian Journal of Geosciences volume 14, 2021 (in English)

Xiao Sun, On the application of surfactant and water alternating gas (SAG/WAG) injection to improve oil recovery in tight reservoirs, Energy Reports Volume 7, November 2021, Pages 2452-2459 (in English)

Tadesse Weldu Teklu, Low-salinity water-alternating-CO2 EOR, Journal of Petroleum Science and Engineering, № 142, 2016 (in English)

RD-39-9-151-79. Guidelines for design and application of flooding technique using water-gas mixtures (in Russian)

J.J. Taber; F.D. Martin; R.S: Seright EOR Screening Criteria Revisited, SPE-35385-PA

A.D Hartono: EOR Screening, Predictive Model, and Optimisation, SPE-186884-MS (in English)

Fedorov K., Pospelova A., Kobyashev A., Guzhikov P., Vasilev A. Dizayn vodogazovogo vozdeystviya: puti dostizheniya smeshivaemosti, instrumenty i metody analiza, otsenka effektivnosti [Wag Design: Miscibility Challenge, Tools and Techniques for Analysis, Efficiency Assessment] SPE-196758-RU. (in Russian and English)

Authors

P.A. Tsitser, LLC «Tyumen Petroleum Research Center»
19, Perekopskaya st., Tyumen, 625003, Russian Federation
E-mail: patsitser@tnnc.rosneft.ru

For citation:

P.A. Tsitser Analiz primenimosti vodogazovogo vozdejstvija na ob#ektah Tjumenskoj svity [Analysis of the applicability of WAG at the facilities of the Tyumen sweet]. Neftyanaya Provintsiya, No. 4(28), Part 1, Special issue, 2021. pp. 94-108. DOI https://doi.org/10.25689/NP.2021.4. 94-108 (in Russian)