Известия Томского политехнического университета: Инжиниринг георесурсов (Jan 2018)

Application of oil-soluble polymers for increasing petroleum oil refining

  • Vladimir Nikolaevich Manzhai,
  • Alexander Vyacheslavovich Polikarpov,
  • Evgeny Aleksandrovich Rozhdestvensky

Journal volume & issue
Vol. 328, no. 12

Abstract

Read online

Relevance. A part of new deposits increased steadily in real time in Western and Eastern Siberia. They are at early stage. They often have complex, heterogeneous structure with hard-to-recover reserves, so it is absolutely necessary to use new approaches for efficient development of these fields and improving the existing ones for enhanced oil recovery. The aim of the research is the experimental verification of new technology with the use of oil soluble polymers and its comparison with the technology based on the use of water-soluble polymers. Research methods: simulation of oil shading process using the SAP-700 bulk principle plant with two parallel columns; gas method for determining the filter capacity of rock properties; determination of viscosity using a Rheotest RV 2.1 rotary viscometer under different temperature conditions. Results. The authors have developed and experimentally confirmed in the laboratory a new technology of polymer flooding at early stage of development using the oil soluble polymers. This technique allows increasing the degree of development of reserves by an average of 30 % in comparison with the existing methods of enhanced oil recovery, and solving the problems occurring when using watersoluble polymers as freezing of aqueous polymer solution in winter and low solubility of polymers in reservoir water with high content of salts. Application of the new technique allows reducing power consumption by 25 %.

Keywords