FIELD: oil industry.
SUBSTANCE: invention relates to oil industry. Method of removing asphaltene deposits, comprising feeding a detergent composition into annulus of well, circulation of detergent composition in a closed cycle, removal of products of washing well as use of detergent composition NPS-R1, which is fed in a volume of 10-50 % of circulating volume, equal to sum of volumes of annulus and tubing, and of washing cycle is repeated twice.
EFFECT: technical result is longer periods between cleaning of well.
1 cl, 2 ex
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