稠油乳化黏度测量曲线与乳液特性的关系  

Relationship between viscosity measurement curve and emulsion characteristics of heavy oil

作　　者：马涛[1,2] 伦增珉 葛巧玉[1,2] 许关利 MA Tao;LUN Zeng-min;GE Qiao-yu;XU Guan-li(Exploration&Production Research Institute,SINOPEC,Beijing 100083,China;Research and Development Center for the Sustainable Development of Continental Sandstone Mature Oilfield by National Energy Administration,Beijing 100083,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]国家能源陆相砂岩老油田持续开采研发中心,北京100083

出　　处：《应用化工》2024年第3期534-537,共4页Applied Chemical Industry

基　　金：国家自然科学基金企业创新发展联合基金(U20B6003);国家重点研发计划(2018YFA0702400)。

摘　　要：稠油化学驱过程中降黏剂浓度对稠油乳化影响明显,通过测量不同浓度降黏剂的稠油乳状液黏度-时间曲线,以黏度、降黏率为指标分析了黏度曲线与乳液特性的关系。结果表明,当降黏剂的浓度远大于临界乳化浓度时,形成稳定O/W乳状液,黏度低、降黏率大于95%。当降黏剂的浓度大于临界乳化浓度时,形成O/W乳状液,而后随着表面活性剂向油相的迁移,油滴聚并、分层。当降黏剂的浓度与临界乳化浓度相当时,乳状液油O/W转化为W/O,黏度大幅度提高。当降黏剂的浓度小于临界乳化浓度时,只能形成W/O乳状液。During chemical flooding of heavy oil,the viscosity reducing agent concentration has obvious influence on the emulsification of heavy oil.The viscosity and viscosity reduction rate are used as indicators.By measuring the viscosity time curve of heavy oil emulsion with different viscosity reducing agent concentration,the relationship between viscosity curve and emulsion characteristics was analyzed.The result showed that when the concentration of viscosity reducer is much larger than the critical emulsion concentration,a stable O/W emulsion is formed with low viscosity and viscosity reduction rate greater than 95%.When the concentration of viscosity reducing agent is greater than the critical emulsion concentration,O/W emulsion is formed,and then with the migration of surfactant to oil phase,oil droplets coalesce and stratify.When the concentration of viscosity reducer is equal to the critical emulsion concentration,the emulsion oil O/W is converted to W/O,and the viscosity is greatly improved.When the concentration of viscosity reducer is less than the critical emulsion concentration,only W/O emulsion can be formed.

关 键 词：稠油 乳化 黏度 降黏率 乳状液类型 

分 类 号：TQ423[化学工程] TE39[石油与天然气工程—油气田开发工程]