IMPROVEMENT OF HYDRAULIC FACING METHOD TO INCREASE WELLS PR ODUCTIVITY
Mashrapova M.A. Zholtayev G.Z. Abdeli D.Z. Ozdoyev M.O. Togizov K.S.
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 448124 - 129 pp.
The article considers that in recent years, there has been a tendency towards a deterioration in the structure of residual reserves in the fields, and hard-to-develop reserves are located in reservoirs with low permeability. Fracturing fluids used in hydraulic fracturing for the purpose of increasing oil recovery in multilayer fields with low permeability is analyzed. It is noted that the requirements for the use of these fluids in fields with a complex geological structure are high. The article proposes the use of a high-boiling oil fraction as a fracturing fluid in hydraulic fracturing, when comparing water-based gel usage, which is economically ineffective. The exposure process in porous cavities and capillary tubules during injection of oil-based fracturing fluid into the formation was theoretically comprehensively analyzed 2nd the importance of laboratory experiments was noted. In laboratory conditions, a scheme for separating a high-boiling fraction of oil was shown on a special device and work was carried out to separate it into fractions by heating oil at a high temperature. The course experimental -work was demonstrated usin2 a high-boiling oil fraction to displace the original oil from oil-saturated cores using a specially prepared device. Before and at the end of oil displacement, displacement work with lighter oil was performed in the core with heavier oil, data on the porosity of the core, the volume of displaced oil, etc. were obtained. These data reveal the formation of cracks. Summing up the results of laboratory studies, the advantages and disadvantages of hydraulic fracturing using an oil-based fracturing fluid were compared with a water-based fluid.
Boiling point oil fraction , Formation permeability , Fracturing fluid , Hydraulic fracturing , Saturation
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Institute of Geological Sciences named after K.I. Satbayev, Almaty, Kazakhstan
Satbayev University, Almaty, Kazakhstan
Institute of Geological Sciences named after K.I. Satbayev
Satbayev University
10 лет помогаем публиковать статьи Международный издатель
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