摘要
乳液驱油机理的研究是提高原油采收率技术中十分重要的基础研究内容之一。通过试验，用非稳定法较全面地研究了微乳液体系的两相及三相相对渗透率曲线，数据处理采用新的Ｗｅｌｇｅ／ＪＢＮ法。实验结果表明所采用的实验设计与处理方法是适宜的，它与稳定法的实验结果有较好的相容性，通过分析和讨论低界面张力下微乳液相对渗透率曲线的特征、润湿滞后效应及界面张力和流体粘度对相对渗透率的影响，获得了大量有益的结论。
The study on mechanism of micellar flooding is one of the most paramount fundamental works in enhanced oil recovery techniques.After a broad investigation into the background of micellar flooding techniques,two and three phase relative permeabilities have been studied in brine oil microemulsion systems by a lot of unsteady state measurements.The method,called Welge/JBN,is adopted for data processing.It is proved that the experimental strategies and data handling method are reasonable and the results obtained by unsteady state method are in line with that gained by steady state method.Analysis and discussion for hysteresis effect, influence of viscosity and interfacial tension on the characteristic of relative permeability curves have been given;comparisons are also made between the steady state and the unsteady state method.Some important results have been obtained,which will improve the knowledge about relative permeabilities and percolation mechanism of brine oil microemulsion systems in formation.
出处
《石油学报》
EI
CAS
CSCD
北大核心
1998年第4期83-88,共6页
Acta Petrolei Sinica
关键词
相对渗透率
渗流机理
微乳液驱油
提高采收率
microemulsion unsteady state method relative permeability percolation mechanism experiment
