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TECHNOLOGICAL APPROACHES TO THE INTENSIFICATION OF OIL PRODUCTION USING GASOLINE-NITRITE EMULSION SYSTEMS
Abstract
Asphalt-resin-paraffin deposits (ARPD) are a complex dispersed system formed by substances that have separated from the oil phase according to various signs. The sediments include asphaltenes, resins, paraffins, liquid hydrocarbons, mechanical impurities and water. In conditions of intensive deposition of ARPD, normal operation of wells is impossible without carrying out work using dewaxing equipment. The purpose of the treatment is the use of chemical reagents in the composition of the emulsion to affect the bottom-hole zone of the well formation and to remove ASF from underground equipment (UE). The objects of application of this technology are producing wells with decreasing current productivity due to the loss of ARPD. The applied technology should ensure the removal of deposits from the bottom-hole zone (BHZ) of the formation and thereby increase the productivity of the well. The article describes the development and testing of a nitrite composition to increase well productivity. The substantiation of scientific, technical and economic necessity for developing a composition that provides not only a high degree of washing of pore channels, but also a sufficiently high temperature of the process due to the use of the most economical method, i.e. exothermic reaction, is proposed. The paper develops a technology for using emulsions. The results of treating the bottomhole zone of production wells at the Uzen field with an emulsion based on natural gasoline and ammonium nitrite are presented.
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