关键词: 曲拉通X?100, 稠油, 表面活性剂, 乳化降黏, 复配体系

Abstract: Taking the heavy oil production liquid in a block of Liaohe oilfield as the research object, a compound viscosity reducer was formulated according to the current situation, and the effect of the ratio and amount of such viscosity reducer on the viscosity of heavy oil emulsion was studied. The emulsified viscosity reducing agent is composed of non⁃ionic surfactant Triton X⁃100 and zwitterionic surfactant dodecyldimethyl betaine (BS⁃12).The experimental results show that when the mass fraction of 1.6% Triton X⁃100 is added into the heavy oil alone, the viscosity reduction rate of the heavy oil can reach 75.93%; BS⁃12 with a mass fraction of 0.6% and Triton with a mass fraction of 1.6%. Triton X⁃100 is compounded by a volume ratio of 1∶1, and the viscosity reduction rate of heavy oil can be increased to 92.63%. In addition, when the complex system is added in a volume ratio of 1∶1∶1, weak alkali sodium carbonate with a mass fraction of 0.4% is added. After the aqueous solution, the viscosity reducing rate of heavy oil can be further increased to 93.14%, and the stability of the compounding system is also improved.

Key words: Triton X?100, Heavy oil, Surfactant, Emulsfication viscosity reduction, Compounding system