摘要
在国内外高温泡沫调驱技术调研基础上，针对稠油油藏难开采、易出砂、汽窜等问题，提出了一种自生气高温泡沫技术。通过室内实验优选出了自生气体系及2种高温起泡剂，确定了2种自生气高温泡沫最佳配方。采用动静结合技术，对自生气高温泡沫配方的降黏效果、阻力系数敏感性、驱油效果等方面进行了系统研究。结果表明2种自生气高温泡沫配方均具有较好的驱油效果。其中配方1的降黏率在95％以上，与原油间界面张力也可达到10^-8N／m数量级，总驱油效率为70．1％。实验效果明显，能有效防止汽窜、提高采收率，为自生气高温泡沫技术现场实施提供了可靠依据。
Based on the investigations on high-temperature foam profile-controlling and displacing technology at home and abraod, a new technique-self-generating high-temperature gases foam flooding is proposed, which is fo- cused on the problems of recovery difficulty, easy to sanding, steam channeling and so on for heavy oil reservoirs. A self-generated gas system and two high-temperature gas foaming agents are optimized by laboratory experiments. And furthermore two kinds of optimal formulae of the self-generated and high-temperature gas foams are determined. The systematic studies are engaged in the viscosity reduction, sensitivity of the resistance coefficient, oil displaced effects and on for the formulae of the self-generated and high-temperature gas foams by means of dynamic and static integrating technology. The results show that both of the two agents are very effective in oil displacement efficiency. Among them, Formula-1 ＇ s viscosity reducing ratio can reach 95% or above, and furthermore its interfacial tension between the agent and oil can be up to 10^-8N / m, the total oil displacement efficiency is 70. 1%. The experimen- tal effects are obvious, the steam channeling can be favorably prevented, the oil recovery can be greatly enhanced. This achievements have provided reliable evidences for the field application of self-generated and high-temperature gas foams.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2012年第5期142-146,共5页
Petroleum Geology & Oilfield Development in Daqing
基金
国家自然科学基金项目“MES胶束/纳米TiO2自组装体系的流变动力学研究”（50904076）.
关键词
高温泡沫
蒸汽热采
降黏率
阻力系数
high-temperature foam
steam thermal recovery
viscosity reduced ratio
resistance coefficient
