COMPOSITION FOR REMOVAL OF ASPHALTENO-RESIN-PARAFFIN SEDIMENTS Russian patent published in 1999 - IPC

FIELD: petroleum industry. SUBSTANCE: composition has the following components, wt.-%: by-side product of the oil field production - hexane fraction or an oil-processing product - directly distilled gasoline fraction "Reagent K-2" 25-75; polyethylene glycol monoalkyl ester on the basis of primary saturated alcohols of the general formula: C_nH_2n+1O(C₂H₄O)_mH where n = 10-18; m = 8-10 or oxyethylated isononylphenol (oxyethylation degree is 9-12) 0.5-5; by-side product of an organic synthesis on the basis of aromatic hydrocarbons - the rest. Composition can be used for removal of asphalteno-resin-paraffin sediments from the oil field equipment of holes and critical zone of stratum and provides the removal 76-98% of sediments at the broad range of asphaltenes, resins and paraffins content. EFFECT: enhanced effectiveness of the composition. 2 tbl, 5 ex