文献类型：期刊文献

中文题名：可视化通道内的CO2乳液驱替实验研究

英文题名：Study on CO2 emulsion displacement experiment in visualized channels

作者：姚林杰[1];胡冬冬[1];包磊[1];赵玲[1];刘涛[1]

机构：[1]华东理工大学化学工程重点实验室

年份：2019

卷号：48

期号：9

起止页码：949

中文期刊名：石油化工

外文期刊名：Petrochemical Technology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金项目（21676081）

语种：中文

中文关键词：二氧化碳/水乳液;强化驱油;可视化驱替

外文关键词：CO2/water emulsion;enhanced displacement of oil;visualized displacement

摘要：分别采用十二烷基硫酸钠和自制表面活性剂聚乙酸乙烯酯-b-聚乙烯吡咯烷酮(PVAc15-b-PVP18)构建CO2/水乳液(C/W乳液),研究了两种表面活性剂构建和稳定C/W乳液的能力,并在可视化驱替装置中进行模拟油的驱替实验,从模拟油采收率和波及效率两方面研究了乳液的驱替性能。实验结果表明,在10 MPa时,PVAc15-b-PVP18构建的C/W乳液能稳定24 h以上,具有较高的表观黏度,模拟油采收率最高可达80%左右。随着CO2体积分数增加,C/W乳液的表观黏度上升,但乳液稳定性有所下降。水驱与CO2驱易出现指进现象,导致波及效率低下,而C/W乳液驱替稳定,在通过支路时,出现明显的绕流现象,使得波及效率显著增大。
The ability to construct and stabilize CO2/water emulsion(C/W emulsion)of two kinds of surfactants were studied by using sodium lauryl sulfate and self-made surfactant polyvinyl acetate-b-polyvinylpyrrolidone(PVAc15-b-PVP18),and the displacement performance of the emulsion was studied from the aspects of simulated oil recovery and sweep efficiency by the simulated oil displacement experiment in a visual displacement device.Experimental results showed that the C/W emulsions constructed by PVAc15-b-PVP18 could remain stable for more than 24 h at 10 MPa,and has a high apparent viscosity.The simulated oil recovery can reach up to 80%.As the CO2 volume fraction increases,the apparent viscosity of the C/W emulsion increases,but the emulsion stability decreases.Easy fingering in water flooding and CO2 flooding results in low sweep efficiency,while C/W emulsion flooding is stable when passing through the branch,and obviously flowing around makes the sweep efficiency significantly increase.