油藏条件下平面双电层的特性研究  

Properties of a Planar Electrical Double Layer under Conditions of Oil Reservoir

作　　者：钱勇先[1] 

机构地区：[1]江汉石油学院地球物理勘探系

出　　处：《江汉石油学院学报》1996年第3期41-46,共6页Journal of Jianghan Petroleum Institute

摘　　要：依据室温下双电层的研究方法，探讨了在高温、高矿化度的油藏条件下平面扩散双电层的基本特性。以ＮａＣｌ为主要电解质的地层水为例，在温度为２０～２００℃、矿化度为１０００～１０００００ｍｇ／Ｌ的条件下，分别计算了双电层的厚度、电势分布、离子浓度分布和电荷密度分布。计算结果表明，双电层的基本特性受温度的影响小，受矿化度的影响大，尤其是在矿化度为１０００～２００００ｍｇ／Ｌ之间时，影响最大。Primary properties of a planar electrical double layer in oil reservoir with high temperature and high salinity are studied by means of the methodology used in electrical double layer research at normal temperature. For the reservoir water consisting mainly of electrolyte NaCI, which is the most possible case in China, the thickness,potential, ionic concentration and charge density of the electrical double layer are computed and discussed under the conditions of temperature varying from 20 to 200 ℃ and salinity varying from 1 000 to 100 000 mg/L. Results show that the properties of the electrical double layer are dependent lightly on the temperature of reservoir water, but heavily on the salinity, especially of 1 000￣20 000 mg/L.

关 键 词：储集层 油气勘探 油藏条件 

分 类 号：P618.130.2[天文地球—矿床学]