Home – Home – Jornals – Chemistry for Sustainable Development 2021 number 2

Results of the laboratory tests of acid chemical oil-substituting GBK composition developed at the Institute of Petroleum Chemistry SB RAS are presented. The composition is based on a surfactant, an adduct of inorganic salt, polyatomic alcohol, and carbamide. The technology is aimed at increasing the oil recovery due to the action on reservoir rock, with the restoration of well injectivity for the wells at the late stage of development, and oil-washing capacity of surfactant components, within a broad temperature range (23-150 °C). A strong acid is formed directly in the reservoir under the effect of formation conditions. The acid is able to interact with the reservoir rock, with an increase in the injectivity of the bottomhole zone for water and hot steam. It is established that the action of the acid composition leads to the equalization of filtration flows and a significant increase in the oil displacement coefficient.