| abstract |
The invention relates to the oil and gas industry. The goal is to increase the effectiveness of the composition under conditions of high temperatures and a high content of hardness salts by improving the washing properties of the composition and preventing the formation of insoluble salts in the formation. The composition contains the following components with their ratio, wt.%: Sulfonol 38-41, sodium toluene sulfonate 9-11, synthetic hydrocarbons of the fraction 190-340 ° C 1-5, water - the rest. The composition is prepared by mixing an aqueous solution of the sulfonol with dry sodium toluene sulfonate and synthetic hydrocarbons of the 190-340 ° C fraction at room temperature and stirring until completely dissolved in water. Due to the combination of the components it contains, it has an increased wettability and allows dispersion of contaminants. 3 tab. |