METHOD FOR OBTAINING POLYMER-SILICATE COMPOSITION Russian patent published in 2012 - IPC C09K8/88 

FIELD: oil and gas industry.

SUBSTANCE: in method for obtaining the reagent of polymer-silicate composition, which involves combination of xanthane biopolymer and sodium silicate, the above combination is performed by means of dilution in water of xanthane biopolymer "BIOSIN" at the temperature of 45-500°C, agitation of the obtained solution at the above temperature with neonol AF 9-12, formalin and ethylene glycol, which are added during 40 minutes till stable emulsion is obtained with its further being mixed with sodium silicate in the form of liquid glass at temperature of 50-650°C during 40 minutes at agitation speed of not more than 100 rpm till homogeneous structure is formed, at the following component ratio, wt %: above biopolymer 0.3 - 0.6, neonol AF 9-12 0.45 - 0.9, ethylene glycol 3.5 - 7.0, formalin 0.35 - 0.7, liquid sodium glass 60.0 - 65.0, and water is the rest.

EFFECT: improvement of process parameters and oil displacing properties.

3 ex