微纳米颗粒三相泡沫体系构筑及特性
Construction and characteristics of three-phase foam system with micro and nano particles
刘宏生1
作者信息
- 1. 大庆油田有限责任公司勘探开发研究院, 黑龙江大庆 163712;国家能源陆相砂岩老油田持续开采研发中心, 黑龙江大庆 163712
- 折叠
摘要
为进一步提高聚驱后采收率,结合聚驱后油藏特征,构筑具有自适应堵调驱功能的微纳米颗粒三相泡沫体系,通过黏度、界面、泡沫和堵调驱性能试验,研究微纳米颗粒三相泡沫体系特性,应用归一化和权重系数方法,分析三相泡沫体系溶液特性与驱油效果的相关性.结果表明:软体微米颗粒三相泡沫体系的特性参数较好,具有超低界面张力,剖面改善率超过 82%,聚驱后可提高采收率超过 14%;硬质纳米颗粒三相泡沫体系的特性参数相对较差,但聚驱后仍可提高采收率超过 10%;三相泡沫体系泡沫综合指数和运动黏度是驱油效果的主要影响因素,而剪切黏度和界面张力是次要影响因素.
Abstract
In order to further improve the oil recovery after polymer flooding,a micro-nanoparticle three-phase foam system with self-adaptive plugging and flooding function was constructed considering the reservoir characteristics after polymer flood-ing.The characteristics of micro-nanoparticle three-phase foam system were studied by viscosity,interface,foam,and plug-ging and flooding performance experiment.The correlation between solution characteristics and oil displacement effect of three-phase foam system was analyzed by normalization method and weight coefficient method.The results show that the char-acteristic parameters of the three-phase foam system with soft micro particles are good and it has ultra-low interfacial tension.Its profile improvement rate is more than 82%,and it can enhance oil recovery by more than 14%after polymer flooding.The characteristic parameters of the hard nanoparticles three-phase foam system are relatively poor,but it can still enhance oil recovery by more than 10%after polymer flooding.The foam comprehensive index and kinematic viscosity of three-phase foam system are the main influencing factors of oil displacement effect,while the shear viscosity and interfacial tension are secondary influencing factors.
关键词
微纳米颗粒/三相泡沫体系/聚驱后/黏度/剖面改善率Key words
micro and nano particles/three-phase foam system/after polymer flooding/viscosity/profile improvement rate引用本文复制引用
基金项目
中国石油科技专项(2016E-0207)
中国石油科技专项(2023ZZ17YJ02)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据