聚驱后水淹层声电响应特征研究  

On Acoustic and Resistivity Response Features of Waterflooded Layer After Polymer Flooding

作　　者：张庆国[1] 宋增彬[1] 刘茗茗 陈熹[2] 

机构地区：[1]东北石油大学,黑龙江大庆163000 [2]大庆油田有限责任公司采气分公司,黑龙江大庆163000

出　　处：《测井技术》2014年第4期421-424,共4页Well Logging Technology

基　　金：国家科技重大专项大型油气田及煤气开采"聚驱后剩余油饱和度测井解释方法研究"(2011ZX05010-005-006)

摘　　要：为准确认识聚合物对声电曲线的影响,采用对子井分析技术,对应水洗程度,研究了深侧向测井曲线、R25电阻率曲线、声波时差曲线聚驱前后响应特征的变化,结合聚合物溶液实验和岩石电阻率、声波实验的结果,从机理角度出发,分析了产生这些变化的原因。聚合物具有弱导电性,聚合物溶液的电阻率主要取决于溶液的矿化度。注入清水聚合物的区域有电阻率上升现象。聚合物浓度越大,声速越小,声波时差越大。聚驱声波时差较水驱略有增大。淡水聚驱情况下,电阻率值和声波时差值在强水洗层段的增加量略高于中水洗层段。研究结果对聚驱后测井解释分析提供了参考依据。In order to further understand the influences of polymer on acoustic and resistivity curves.Corresponding waterflooded extent,the pair well analysis technology is applied to study the variety response characteristics of deep lateral resistivity curve,R25 resistivity curve and acoustic curve before and after polymer flooding.Combined with the experiments of the polymer solution,petrosal resistivity and acoustics,we analyze the cause of variety from mechanism.Polymer has weak conductivity,the resistivity of polymer solution depends on the salinity of solution.The resistivity increases in branch water polymer injection zone.The polymer concentration is bigger,the acoustic speed is smaller and acoustic travel time is longer.The acoustic travel time in polymer flooding increases slightly compared to water flooding.Under the fresh water polymer flooding situation,the resistivity and acoustic travel time value increase slightly in strong washed zone compared to medium water washed zone.The analysis provides a reference for log interpretation of polymer flooding.

关 键 词：测井解释 聚驱 岩石声电实验 水淹层 测井响应 

分 类 号：P631.84[天文地球—地质矿产勘探]