RESEARCH ON THE EFFECTIVENESS OF THE COMBINED METHOD OF POLYMER AND WATER-GAS IMPACT ON OIL RESERVOIRS
NEFT LAYLARINA POLİMER VƏ SU-QAZ TƏSİRİNİN KOMPLEKS ÜSULUNUN EFFEKTİVLİYİNİN TƏDQİQİ
ИССЛЕДОВАНИЕ ЭФФЕКТИВНОСТИ КОМПЛЕКСНОГО МЕТОДА ПОЛИМЕРНОГО И ВОДОГАЗОВОГО ВОЗДЕЙСТВИЯ НА НЕФТЯНЫЕ ПЛАСТЫ
Hadiyeva A.S. Bissembayeva K.T. Mamalov E.N. Sabyrbayeva G.S.
2025Geology and Geophysics Institute at Azerbaijan National Academy of Sciences (ANAS)
ANAS Transactions, Earth Sciences
2025Issue 279 - 88 pp.
This paper focuses on the issue of effective technology for extracting high-viscosity oil from heterogeneous reservoirs. The study examines methods for enhancing oil recovery from depleted fields containing high-viscosity oil. Three different reservoir impact methods are analysed in this research. Two of these methods are well known in oil production practice: polymer flooding and oil displacement using a water-gas mixture. The results obtained from these experiments are compared with the outcomes of the proposed combined impact method. The experiments utilized oil with a viscosity of 205 mPa·s at 20°C. In all conducted experiments, the first stage involved oil displacement using distilled water. In the first scenario, after the initial stage, a slug of polymer solution was injected and subsequently pushed forward by distilled water. In the second scenario, a slug of polymer solution was injected and then displaced using a water-gas mixture. In the third scenario, after the initial stage, oil displacement continued by injecting a water-gas mixture into the porous medium. A comparative analysis of the conducted experiments showed that the worst result was obtained when only the polymer solution slug was used. The effectiveness of the combined impact technology based on a polymer solution slug with a 0.25% concentration and a water-gas mixture was found to be approximately equal to that of using only a water-gas mixture with a high water-gas ratio.
concentration , oil recovery factor , polymer , solution , water-gas mixture
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Caspian University of Technology and Engineering named after Sh.Yessenova, Building 1, Microdistrict 32, Mangistau region, Aktau, 130003, Kazakhstan
Ministry of Science and Education Republic of Azerbaijan, Oil and Gas Institute, 9, F.Amirova str., Baku, AZ1000, Azerbaijan
Caspian University of Technology and Engineering named after Sh.Yessenova
Ministry of Science and Education Republic of Azerbaijan
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