西南石油大学学报（自然科学版）Issue(3)：154-159,6.DOI:10.3863/j.issn.1674-5086.2013.03.022
稠油氧化自生表面活性剂乳化降黏实验研究*
Experimental Study on Reducing Viscosity by Emulsification of Surfactants from Heavy Oil Oxidation
摘要
Abstract
The effects of air-injection catalytic oxidation at low temperature on the composition and properties of the Bohai Sea heavy oil were investigated in the paper. And the capability of emulsification of petroleum carboxylate produced by petroleum carboxylic acids which were extracted from oxidized heavy oil was evaluated. The effects of many parameters such as degree of heavy oil oxidation,the dosage of texture modifier,water ratio and the temperature of emulsification on the capability of emulsification of oxidized heavy oil were studied,and results were obtained by air-injection catalytic oxidation at low temper-ature for 72h. The results indicate that the content of resins and asphaltene in heavy oil decreased by 4.4%,and the relative average molecular mass also decreased by 5.18%. So oxidation had certain influence on modification of heavy oil behavior, and the acid value of heavy oil increased from 2.78 mg KOH/g to5.05 mg KOH/g. Due to lower O/W interfacial tension, petroleum carboxylate has good emulsification effect. Heavy oil generated autogenous surfactant under the action of compound texture modifier by air-injection catalytic oxidation at low temperature,and formed O/W emulsion system to achieve emulsified viscosity reduction,the viscosity reduction ratio reaching above 92%.关键词
稠油/氧化/乳化/自生表面活性剂/降黏Key words
heavy oil/oxidation/emulsification/autogenous surfactant/viscosity reduction分类
能源科技引用本文复制引用
崔盈贤,唐晓东,李晶晶,苏旭,赵文森..稠油氧化自生表面活性剂乳化降黏实验研究*[J].西南石油大学学报（自然科学版）,2013,(3):154-159,6.基金项目
国家科技重大专项“海上稠油热采增效机理及方法研究”（2011ZX05024-005-008）。 （）
