ACIDIC SURFACTANT COMPOUND FOR PROCESSING FACE-ADJACENT ZONE Russian patent published in 2005 - IPC

FIELD: oil industry.

SUBSTANCE: compound for processing face-adjacent bed zone includes mixture of inhibited hydrochloric and HCl and fluorine-hydrogen acid HF, non-ionogenic surfactant, asphalt-resin-paraffin precipitations solvent and water, additionally has mutual solvent and oxyethylenediphosphone acid and/or vinegar acid with following ratio of components in percents of mass: HCl 3-23, HF 0.5-5, surfactant 0.1-1, solvent 0.3-3, acid and/or vinegar acid 0.05-6, mutual solvent 10-30, water the rest. As mutual solvent compound contains low spirits: isopropylene spirits or methanol, or ethanol, or acetone, or spirits-containing industrial wastes.

EFFECT: higher efficiency.

2 cl, 3 tbl