Open AccessEnhanced Oil Recovery for Deposits of High Viscosity Oils Using Multifunctional Systems Based on Surfactants
Author(s) -
Л. К. Алтунина,
V. A. Kuvshinov,
L. A. Stasieva,
I. V. Kuvshinov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1611/1/012033
Subject(s) - enhanced oil recovery , surface tension , viscosity , chemical engineering , composition (language) , chemistry , carbonate , materials science , petroleum engineering , geology , organic chemistry , composite material , thermodynamics , linguistics , philosophy , physics , engineering
To enhance the oil recovery of high-viscosity oil deposits in the temperature range of 20-210 °C, the multifunctional composition based on surfactants, aluminum and ammonium salts, an adduct of inorganic acid, carbamide and polyol with an adjustable viscosity and high oil-displacing ability was created. The composition has a low interfacial tension, a high buffer capacity in a wide pH range, 2.5-10 units pH, a delayed reaction with carbonate rocks, prevents the precipitation of insoluble reaction products, increases the permeability of reservoirs. The composition is both oil-displacing and flow-diverting, provides an enhance in the oil recovery factor (ORF) due to the increase in the oil displacement and formation sweep by water or steam flooding. Practical recommendations are given on the application of the composition at the Permian-Carboniferous deposits of the Usinsk oilfield.