Physicochemical methods for enhancing oil recovery from oil fields

Application of an Oil-Displacing Composition for Increasing Flow Rate of Low Producing High-Viscosity Oil Wells of the Usinskoye Oil Field

“…Over the recent 40 years, more than 92% from 550 oil recovery enhancement projects worldwide were performed using thermal methods, specifically, those associated with steam injection. It is possible to improve the efficiency of thermal steam-treatment by combining it with physical and chemical methods, in particular with the use of oil-displacing and flow-deflecting systems providing an additional oil displacement and increasing the reservoir sweep efficiency [15,16]. The development of complex methods of combining thermal steam stimulation and physicochemical treatments is at the initial stage.…”

“…These are the methods of combined action by water vapor and physical and chemical composition capable of generating freely disperse and bonded disperse systems in the reservoir, which act as intensifiers and regulators of extraction of heavy oil by thermal methods. 11 New commercial technologies have been created to enhance oil recovery and for water shutoff in the deposits with difficult-to-recovery reserves including high-viscosity oil pools [15][16][17][18][19]. A promising concept has been created using reservoir energy or that of the injected heat carrier to generate oil-displacing fluid, gels and sols in situ [15,17].…”

“…11 New commercial technologies have been created to enhance oil recovery and for water shutoff in the deposits with difficult-to-recovery reserves including high-viscosity oil pools [15][16][17][18][19]. A promising concept has been created using reservoir energy or that of the injected heat carrier to generate oil-displacing fluid, gels and sols in situ [15,17]. Physicochemical fundamentals have been developed to enhance oil recovery using chemical intellectual systems: gel-forming systems and compositions of surface-active substances, preserving for a long time in a reservoir and self-regulating a complex of their properties, being optimal for oil displacement goals [15][16][17][18][19][20].…”

“…A promising concept has been created using reservoir energy or that of the injected heat carrier to generate oil-displacing fluid, gels and sols in situ [15,17]. Physicochemical fundamentals have been developed to enhance oil recovery using chemical intellectual systems: gel-forming systems and compositions of surface-active substances, preserving for a long time in a reservoir and self-regulating a complex of their properties, being optimal for oil displacement goals [15][16][17][18][19][20]. To enhance oil recovery from high-viscosity oil pools at a later stage of their development we have developed EOR technology intended to alternate thermal-steam and physicochemical stimulations by means of surfactant-based oil-displacing systems generating СО 2 and alkaline buffer solution in situ [19].…”

Permeability of model porous medium formed by random discs

“…MRI is often used for determining the properties of porous media microstructure [6; 7]. Experimental researches the properties of rock porous medium is conducted on expensive equipment, and can take a long time intervals (up to one year) [8]. Today, the increasing of share of the hard-to-recover oil reserves in total oil production [9], stimulate the development of mathematical models, described filtration processes in porous medium.…”