Published March 2018
Increase of oil recovery in layers containing clay particles via liquid-phase oxidizer of chromium anhydride
E.H. AliyevThe article deals with laboratory studies on increasing oil recovery of clay layers using aqueous solution (liquid-phase oxidizer). It is defined that when injecting an aqueous solution of chromium anhydride into the formation, in the result of the following processes oil recovery factor increases compared to the water injection: influencing clay fraction of the reservoir, improve the collector characteristics of clay layer; at the boundary of oil with displacement agent, occurs release of heat, which leads to the decrease of oil viscosity; the chemical interaction of liquid-phase oxidizer with oil leads to the generation of organic acids in the formation. Consequently, injection of liquid-phase oxidizers into clay layers can increase their oil recovery.
