DETERGENT FOR SURFACE CLEANING FROM ORGANIC CONTAMINANTS (VARIANTS) AND USES THEREOF IN CLEANING OF WELLS, PIPELINES, AND CONTAINERS FROM MINERAL OIL DEPOSITION AND SCURF Russian patent published in 2007 - IPC C11D1/825 C11D3/04 E21B37/06 

FIELD: oil-producing and oil-refining industry.

SUBSTANCE: in the first embodiment claimed detergent contains (mass %): neonol 0.5-4.0; syntamide-5 1-5; sodium metasilicate 8-15; sodium tripolyphosphate 8-15; trisodium phosphate 10-15; sodium polyphosphate 2-10; sodium hydrate 1-5; sodium carbonate 15-23; sodium sulfate up to 100. in the second embodiment detergent additionally contains complexing agent in amount of 1-3 mass %. Mass ratio of neonol/syntamide is 1:0.25-10.0/ Additionally detergent may contain defoaming agent in amount of 0.5 % or less. Cleaning method includes treatment of well, pipeline, or container heated up to 45-98°C with 0.3-3.0 % aqueous solution of abovementioned detergent.

EFFECT: decreased detergent consumption.

7 cl, 2 tbl, 1 ex