Issue |
E3S Web Conf.
Volume 177, 2020
XVIII Scientific Forum “Ural Mining Decade” (UMD 2020)
|
|
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Article Number | 01012 | |
Number of page(s) | 11 | |
Section | Mining | |
DOI | https://doi.org/10.1051/e3sconf/202017701012 | |
Published online | 08 July 2020 |
New information about the mechanism of oil displacement from productive reservoirs using flow control technologies
1 Ural State Mining University, Department of Lithology and Geology of Fossil Fuels, 620144, 30, Kuibyshev st., Ekaterinburg, Russia
2 Kazan Federal University, Department of Oil and Gas Geology, 420008, 18, Kremlevskaya st., Kazan, Russia
3 Ural State University of Economics, Department of Regional, Municipal Economics and Management 620144, 62, 8 Marta st., Ekaterinburg, Russia
The article is devoted to improving the efficiency of methods application to increase oil recovery of deposits that are at the final stage of development. This stage is characterized by a high degree of waterlogging of reservoirs and extracted products. From a wide range of chemical methods for increasing oil recovery in Russian oil deposits, flow-regulating (flow-deflecting) technologies have become widespread. The article analyzes the results of purposeful use of thickened water for the completion of reserves of already flooded sandstone layers. Experimental studies were performed on two specially created five-point elements in the experimental sections of the Romashkinskoye deposit. To monitor the process of low-viscosity and high-viscosity oil displacement the following methods were used: a) intake, monitoring and production wells, in which the interval of productive horizons are lined with fiberglass pipes; b) method of high-frequency resistivity (technology of "VNIIneftepromgeophysics" Institute). The studies performed in the monitoring mode showed that, along with the increase in reservoir coverage by flooding at the macro level, there is also a displacement of part of the capillary-trapped oil in the already flooded layers’ intervals, that is, at the level of micro-uniformity of the porous medium. The paper concludes on the effectiveness of using flow-regulating technologies in conditions of high water availability of development objects.
Key words: oil-bearing sand formation / flooding / flow-regulating technology / pilot site / induction method / monitoring / oil displacement mechanism
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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