水淹层混合液地层水电阻率的计算方法  

Computation Method of Mixed Formation Water Resistivity in Water-flooded Zone

作　　者：袁伟[1] 张占松[1] 吕洪志 李兴丽 崔云江 

机构地区：[1]油气资源与勘探技术教育部重点实验室(长江大学),湖北武汉430100 [2]中海石油(中国)有限公司天津分公司研究院,天津300452

出　　处：《石油天然气学报》2014年第9期78-83,5,共6页Journal of Oil and Gas Technology

基　　金："十二五"国家科技重大专项(2011ZX05057-001-002)

摘　　要：通过对地层导电机理和水淹过程中混合液地层水电阻率的变化规律进行研究,提出了一种基于导电模型计算混合液地层水电阻率的方法。首先将地层等效为体积模型,根据并联电导率模型得到混合液地层水电阻率与原始地层水、注入水、泥质含量等的计算关系,然后结合改进的西门度公式进行迭代求解,得到混合液地层水电阻率和含水饱和度。该计算方法在M油田的实际应用中效果较好,证明该方法是有效的。It was proposed by researches that the formation water resistivity in water-flooded zone was an important parameter in the saturation calculation and reservoir evaluation.According to the research of formation conductive mechanism and the rules of mixed formation water resistivity changes in water-flooded zone,a method was proposed based on conducting model to compute the mixed formation water resistivity.First,it was assumed that the formation was equivalent to a volumetric model,the relationship between mixed formation water resistivity and primitive water,injected water and shale content was determined based on parallel conducting model.Secondly,by iteration computation combined with improved Indonesia(Simon Degree)Formula,mixed formation water resistivity and water saturation are determined.This method is used in M Oilfield and good result is obtained,it is proven that the method is effective.

关 键 词：水淹层 混合液地层水电阻率 导电模型 

分 类 号：P631.322[天文地球—地质矿产勘探]