SOLID REAGENT FOR REMOVAL OF ASPHALTENE-RESINOUS-PARAFFIN DEPOSITS IN RECOVERY AND TRANSPORTATION OF OIL AND METHOD OF REMOVAL OF ASPHALTENE RESINOUS-PARAFFIN DEPOSITS Russian patent published in 2003 - IPC

FIELD: oil recovery, particularly, solid reagents for removal of asphaltene deposits and methods of treatment with said reagent of oil wells, oil field and main pipelines for removal of asphaltene-resinous-paraffin deposits. SUBSTANCE: solid reagent includes powdery technical-grade detergent, synthetic detergent containing, at least, 12 wt.% of surfactants, at least, 10.5 wt.% of phosphates in terms of P₂O₅ and, at least, 2 wt.% of sodium silicate in terms of SiO₂ and contains powdery technical-grade detergent including, at least, 4.5 wt.% of surfactants, of least, 11 wt.% of phosphates in terms of P₂O₅, and, at least, 1.7 wt.% of sodium silicate in terms of SiO₂, with the following amounts of ingredients, wt.%: synthetic detergent 20-30; technical-grade detergent 70-80:Method includes treatment of oil wells and pipelines with aqueous solution of said reagent based on mixture of surfactants of 1-2% concentration. For best realization of offered method, it is recommended to use fresh or slightly mineralized water for preparation of aqueous solution of said reagent. Technical result of invention consists in increase of reagent dissolving power with simultaneous improvement of reagent technological effectiveness, stability for prolonged time and ecological purity, and extended assortment and cheap row-material base of said reagent for removal of asphaltene-resinous-paraffin deposits. EFFECT: higher efficiency of method and offered reagent. 3 cl, 3 tbl, 1 ex