A new development of reagents, aqueous-alcoholic solutions of the hydrophobizator CHAS (quaternary ammonium salts of alkyldimethylamine), is produced according to TS 20.41.20-125-56856807-2017. The most effective additive in well killing fluid is a component of compositions used for treatment of bottomhole zones of production and injection wells in order to intensify oil production or increase injectivity (including surfactants, surfactant-acid treatments). It has been used at the fields of LLC RN-Purneftegaz for more than 2 years. Recommended by the institutes of AO "VNIIneft", LLC "RN-UfaNIPIneft", AO "SibNIINP"
