COMPOSITION FOR REMOVING ASPHALTENE-RESIN- PARAFFIN DEPOSITS Russian patent published in 2001 - IPC

FIELD: petroleum industry, more particularly removal of asphaltene-resin-paraffin depositions in petroleum production processes. SUBSTANCE: composition comprises hydrocarbon solvent and additive. Additive includes nitrogen-containing ethylene, oxide and propylene oxide block copolymer with molecular weight of about 5000 or isopropylbenzene production by-product, e. g. polyalkylbenzene resin or mixture thereof at ratio of 1:0.5-10 respectively. Ratios of components are as follows, wt %: nitrogen-containing ethylene oxide and propylene oxide block copolymer with molecular weight of about 5000 or polyalkylbenzene resin or mixture thereof at ratio of 1:0.5-10, respectively, 0.5-5.5; and hydrocarbon solvent, the balance. The claimed composition for removing asphaltene-resin-paraffin deposits with high content of asphaltenes and paraffins is useful both in summer and winter. EFFECT: improved properties of the composition.