DIGITAL MODELING OF INCREASING THE EFFICIENCY OF WATER INSULATION IN THE BOTTOM-HOLE ZONE OF A WELL WITH VARIOUS INJECTION AGENTS
Moldabayeva G. Braun Matthias M. Pokhilyuk M. Buktukov N. Bakesheva А.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#4Issue 460145 - 156 pp.
Currently, the degree of depletion of oil reserves of the industrial category of various regions has increased significantly and amounts to more than 70 %. Since there is a high water content in them, scientific and technical solutions for blocking permeable sections of the reservoir become important. In this regard, ways of using effective waterproofing compounds are being sought. A significant number of formulations are known and a huge experience of their implementation has been accumulated, but their technological efficiency is low and does not exceed 40–50 %. This article reveals the physical and technological essence of the phenomena associated with water flows into the well on the basis of theoretical and experimental studies. The results of the analytical studies carried out using a 3D digital hydrodynamic model are presented. The essence of the technology proposed for implementation is as follows. As a result of plugging of the most permeable layers of the productive section, water consumption decreases along the washed highly permeable layers with an abnormally high rate of reserves production and an increase in depressions on the formation in producing wells. As a result, due to an increase in the pressure gradient between the injection zone and the sampling zone and a change in the direction of filtration flows in the reservoir, oil-saturated layers of reduced permeability and waterlogging, previously not covered or poorly covered by flooding, are involved in the process of active production of reserves. The technology in question can be used in terrigenous and carbonate reservoirs. The following parameters should be noted as geological and physical criteria for selecting an operational facility for the implementation of flow-deflecting technologies (FDT): excess of water content over the degree of production of recoverable oil reserves, a high proportion of residual oil reserves for the development element, water content of the production of producing wells of at least 40%, sufficiently high liquid sampling, lack of oil degassing in the reservoir.
gel-forming compositions , improvement of development efficiency , modeling , polymer , uniform production of layers , water inflow
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Satbayev University, Almaty, Kazakhstan
Geology from Basel University (Switzerland), Wettingen, Switzerland
Ufa State Petroleum Technological University, SRI “KMG Engineering”, Kazakhstan
Mining Institute named after D.A. Kunaev, Almaty, Kazakhstan
Satbayev University
Geology from Basel University (Switzerland)
Ufa State Petroleum Technological University
Mining Institute named after D.A. Kunaev
10 лет помогаем публиковать статьи Международный издатель
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