COMPOSITION FOR DEHYDRATION, DESALTING, AND IMPROVEMENT OF RHEOLOGICAL PROPERTIES OF CRUDE OIL

摘要

FIELD: crude oil treatment.;SUBSTANCE: objective of invention is treatment of crude oil before processing, in particular dehydration, desalting of oil, destruction of water-oil emulsions, and improvement of rheological properties to facilitate transportation of oil through crude oil lines. Composition contains 25.0-55.0% of nonionic demulsifier, notably ethylene oxide/propylene oxide block copolymer based on monoethylene glycol with average molecular mass 4300, 5.0-75.0% of diethylene glycol production distillate (including 20.0-40.0% ethylene glycol methyl ether, 30.0-60.0% diethylene glycol methyl ether, 2.0-5.0% methanol, and 15.0-18.0% water), and solvent, preferably methanol (to 100%).;EFFECT: enhanced oil dehydration and desalting efficiency and improved rheological properties of oil.;1 dwg, 2 tbl