水平井内二氧化碳泡沫压裂液流动规律研究  

Research on Flow Law of CO_2 Foam Fracturing Fluid in Horizontal Wells

作　　者：代云龙[1] 胡园园[1] 张春阳[1] 

机构地区：[1]东北石油大学石油工程学院,黑龙江大庆163000

出　　处：《辽宁化工》2016年第8期993-995,共3页Liaoning Chemical Industry

摘　　要：根据二氧化碳泡沫压裂液特性,设计了气液两相流在水平管内流动规律研究装置,对二氧化碳泡沫压裂液在水平管段中泡沫质量分数对泡沫压裂液流变性的影响进行了分析。实验结果表明,管路中的压降随着气体质量分数的增加,先升高后降低;气体质量分数在%85~%60之间能得到相对稳定的泡沫;并用罗宾诺维奇-莫纳方程对泡沫压裂液流变参数计算分析,得出在实验范围内通过幂律流体模型计算气液两相流流变和水利参数时精度较高,其流变方程为n？？K？？。计算分析表明,随着气体质量分数的不断升高,表观粘度增加,并且随着剪切速率的升高,其表观黏度不断降低。According to the characteristics of CO_2 foam fracturing fluid, design the research model of fracturing fluid flow rule in horizontal well was designed; effect of foam mass fraction on rheological property of foam fracturing fluid in horizontal pipe section was investigated. The experimental results show that the pipeline pressure drop first increases then decreases with increasing of foam mass fraction; when foam mass fraction is 60%~85%, stable foam can be obtained. Robin Norwich-Mauna equation was used to calculate the rheological property parameters of the foam fracturing fluid system. It＇s concluded that, within the scope of this study, foam fracturing fluid rheological parameter and hydraulic parameter calculated by the power law model have higher accuracy, the rheological equation is t =Kgn.The analysis results show that,with increasing of foam mass fraction, apparent viscosity increases; with increasing of shearing rate, apparent viscosity decreases.

关 键 词：二氧化碳泡沫压裂液 气液两相流 压降 气相质量分数 幂律模型 

分 类 号：TE357[石油与天然气工程—油气田开发工程]