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Bondarenko O.A.
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“Tyumen petroleum research center” LLC |
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Grandov D.V.
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“Tyumen petroleum research center” LLC |
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Ruchkin A.A.
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“Tyumen petroleum research center” LLC |
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Smirnov D.S.
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“Tyumen petroleum research center” LLC |
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Ufimtseva M.N.
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“Tyumen petroleum research center” LLC |
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Neustroev K.A.
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“NK “Rosneft” PJSC |
DOI: 10.24412/2076-6785-2022-7-90-95
Abstract
At present, the issue of additional development of oil reserves of fields at the mature stage of development is becoming more and more urgent. Under such conditions, well production is accompanied by large volumes of water and becomes less and less efficient economically. Residual reserves are dispersed over the area, and the causes of watering are often complex and depend on geological features (uneven distribution of reservoir properties), as well as on the efficiency of the implemented development system and the technical status of the well.
Taking into unevenness, distribution of reserve recovery and differentiation of causes and nature of water-cut increase, it becomes relevant to combine technologies, such as various enhance oil recovery (EOR) (combination of work with bottom-hole zone and interwell space), polymer flooding and waterflooding.
The article presents the experience of EOR application at the field assesses the prospects of application by ranking the technologies and selecting pilot. At the same time, complexing is considered on the basis of large-scale works on WAG with carbon dioxide with preliminary polymer flooding.
Materials and methods
Analysis of the effectiveness of actually implemented activities, studies, and calculations on hydrodynamic models.
Keywords
EOR, IOR, WAG, CO2, polymer flooding, modify injectivity profile
