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

作　　者：刘宏生[1,2] LIU Hongsheng(Exploration and Development Research Institute of Daqing Oilfield Company Limited,Daqing 163712,China;Research and Development Center for the Sustainable Development of Continental Sandstone Mature Oilfield by National Energy Administration,Daqing 163712,China)

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712 [2]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

出　　处：《中国石油大学学报（自然科学版）》2024年第2期135-141,共7页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：中石油科技专项(2016E-0207,2023ZZ17YJ02)。

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。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 flooding.The characteristics of micro-nanoparticle three-phase foam system were studied by viscosity,interface,foam,and plugging 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 characteristic 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 

分 类 号：TE357[石油与天然气工程—油气田开发工程]