基于多重光散射法研究CO2泡沫稳定性  

Study on the stability of CO2 foam by multiple light scattering method

作　　者：康万利[1,2] 黄子桐 杨红斌 殷夏[3] 朱彤宇 张向峰 KANG Wan-li;HUANG Zi-tong;YANG Hong-bin;YIN Xia;ZHU Tong-yu;ZHANG Xiang-feng(Shandong Key Laboratory of Oilfield Chemistry,School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China;Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)),Ministry of Education,Qingdao,Shandong 266580,China;Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 100083,China)

机构地区：[1]中国石油大学(华东)石油工程学院山东省油田化学重点实验室,山东青岛266580 [2]教育部非常规油气开发重点实验室(中国石油大学(华东)),山东青岛266580 [3]中石化石油勘探开发研究院,北京100083

出　　处：《日用化学工业》2019年第10期627-632,共6页China Surfactant Detergent & Cosmetics

基　　金：国家自然科学基金资助项目（51774309）;山东省自然科学基金资助项目（ZR2017LEE001）;山东省重点研发计划资助项目（2018GGX102010）;中央高校基础研究基金资助项目（18CX02166A）

摘　　要：CO2泡沫在油藏运移过程中不断地产生和破灭,其稳定性控制着泡沫体系在地层条件下的防窜性能,是泡沫驱的一项重要的评价指标。建立了一种基于多重光散射法研究泡沫稳定性的手段,利用透射光、背散射光强度变化能够记录不同时期泡沫消泡、析液过程中的微小变化并探讨泡沫破灭的微观机理,提出了通过TSI值定量计算泡沫体系半衰期的方法。另外,用Warning-Blender法对比研究了阴非离子表面活性剂SS163及其与纳米颗粒复配体系形成的CO2泡沫体系稳定性。研究结果表明,多重光散射法具有温度控制更精准、无外界空气流动影响等优点,是一种具有较高准确度和重复性的泡沫评价方法。CO2 foam is constantly generated and destroyed during the process of flowing in the reservoir,and the gas channeling capacity of foam depends on its stability which is an important evaluation index of foam flooding.A method based on multiple light scattering to study the stability of foam has been established,in which the small changes in foam defoaming and liquid drainage in different periods can be reflected by the intensity changes of transmitted light and backscattered light.The microscopic mechanisms of foam collapse were explored,and a method for quantitatively calculating the half-life of a foam system by TSI was proposed.In addition,the CO2 foam stabilized by anionic-nonionic surfactant SS163 and its mixture with nanoparticles were prepared,and the foam stability was compared by multiple light scattering method and Warning-Blender method.The results demonstrate that multiple light scattering method has advantages such as more precise temperature control and no influence of external air flow,which is a foam evaluation method with high accuracy and repeatability.

关 键 词：CO2泡沫 多重光散射技术 泡沫稳定性 TSI值 

分 类 号：TQ423[化学工程] TE357.46[石油与天然气工程—油气田开发工程]