THERMO- AND SALT-RESISTANT MUTUAL SOLVENT FOR COMPOSITIONS USED IN OIL EXTRACTING INDUSTRY Russian patent published in 2011 - IPC C09K8/00 C09K8/52 C09K8/72 

FIELD: chemistry.

SUBSTANCE: invention relates to the oil extracting industry, particularly to intensification of oil and gas extraction or increasing intake capacity of acceleration rate injection wells. The mutual solvent for compositions used in the oil extraction industry contains the following, wt %: aliphatic alcohol 10-50.0, still bottoms of triethanol amine or thermally stable triethanol amine.

EFFECT: obtaining heat resistant and salt resistant mutual solvent, which is resistant when used at temperature ranging from minus 60°C to plus 150°C without worsening commercial quality of oil and without corrosion of oilfield equipment, which lowers the risk of deposits of inorganic or organic nature, reduces surface tension of at the boundary with hydrocarbons, high efficiency of processing without formation of an emulsion.

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