酸碱度对矿化度临界值的影响研究  

Effects of Alkalinity on the Critical Value of Salinity

作　　者：蒲春生[1] 张荣军[1] 时宇[1] 景冰[1] 

机构地区：[1]西安石油大学石油工程学院,西安710065

出　　处：《石油工业技术监督》2005年第4期11-13,共3页Technology Supervision in Petroleum Industry

基　　金：本项研究获得国家重大基础研究发展计划 (973 计划):"高效天然气藏形成分布与凝析;低效气藏经济开发的基础研究"(2001CB2091)资助

摘　　要：采用天然岩心的动态模拟试验,在水敏性地层油气田开发过程中矿化度和酸碱度对粘土矿物的膨胀、分散和运移并由此引起地层孔隙堵塞规律有综合效应的基础上,系统地研究了酸碱度对临界总体离子强度的影响以及酸碱度对临界离子强度变化梯度的影响。得到了一些十分重要的新认识,为进一步研究粘土矿物膨胀、分散、运移微观动力学机制提供了重要依据。By doing a dynamic stimulant experiment with natural core, a systematic analysis is made of the effect of salinity and alkalinity of water-sensitive formation on the dilatation, dispersion, and migration of clay minerals in the course of oilfield development. A study is made of the relationship between the concentration of high-valence cations and salinity in the formation pore blockage caused by this effect. Some findings of great important were obtained to provide an important basis for further study of the principle of microscopic dynamic for the dilatation, dispersion, and migration of clay minerals.

关 键 词：酸碱度 矿化度 临界值 动态模拟试验 粘土矿物 离子强度 水敏性地层 动力学机制 开发过程 变化梯度 综合效应 地层孔隙 油气田 膨胀 运移 分散 

分 类 号：P618.13[天文地球—矿床学]