EXPERIMENTAL STUDIES OF CHEMICAL AND TECHNOLOGICAL CHARACTERISTICS OF CROSS-LINKED POLYMER SYSTEMS APPLIED IN FLOW-DIVERSION TECHNOLOGIES
Moldabayeva G.Zh. Suleimenova R.T. Bimagambetov K.B. Logvinenko A. Tuzelbayeva S.R.
2021National 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
2021#4Issue 44850 - 58 pp.
currently, most of the oilfields in Kazakhstan are entering the stage of development (brown fields), which is characterized by a decrease in oil production, an increase in the volume of associated water. Often, commercial wells are completely watered, while a significant part of the oil-saturated reservoir remains undeveloped. In this case, a large amount of material resources is spent on raising water to the surface. The low efficiency of oil production at the stage of a brown field is largely due to the geological and physical heterogeneity of the developed reservoirs. There fore, one of the main issues in the development of fields with geological heterogeneity is the active utilization of poorly drained or non-drained reservoir sections. In recent years, the number of successfully applied physicochemical methods of enhanced oil recovery includes polymer flooding and its modifications (flow diversion technologies-FDT), aimed at the conformance control (CC) of injection wells. This leads to a limitation of water filtration through highly permeable interlayers, an increase in the coverage of a heterogeneous reservoir as a whole, thereby ensuring an increase in the ultimate oil recovery factor (ORF) due to the extraction of oil from undeveloped zones. Experience in the development of oilfields has shown that the use of FDT depends on the geological and physical conditions of the field. There fore, one of the conditions for the effective use of FDT is the correct selection of the geological and physical conditions of the object for the applied technology. In this case, the main role will belong to models that allow for predictive assessment of the effectiveness of technological solutions in the considered geological and physical conditions.
Bottomhole formation zone , Conformance control , Oilfield , ORF , Skin factor , Well
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Satbayev University, Almaty, Kazakhstan
Satbayev University
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