电流势法在直流电测井中的应用  

Application of Current Potential Method in DC Electrical Logging

作　　者：柳杰[1] 张中庆[1] 

机构地区：[1]浙江大学海洋科学系,浙江杭州310058

出　　处：《测井技术》2015年第3期290-294,共5页Well Logging Technology

基　　金：中国石油科技创新基金项目(2010D-5006-0305)

摘　　要：电流势法是地球物理测井稳态直流电场计算中的一种高效数值算法,相比于其他数值算法在直流电测井中的应用有其独特的优越性。电流势法不但能够给出直流测井仪器的测井响应,还能够绘制出其在地层中真实的电流线分布图。介绍电流势法原理,给出电流势法在标准双侧向测井仪器中的应用实例,分析探测深度、分辨率、不对称仪器结构以及不同地层模型下双侧向测井仪器的探测特性。该方法能够应用于任意侧向类测井仪器探测特性的考察和结构的优化设计。Current potential method is a more efficient method in steady DC electric field computation and is more advantage than other numerical algorithm in DC electrical logging. The current potential method can not only provide the response of DC logging tool, but also can draw the real current line in the formation. The principle of current potential method is introduced in this paper and an example of application is given in the standard dual laterolog instrument and the depth of investigation, resolution, asymmetric structure of instrument and the detection characteristics of different formation models can be obtained using this method in dual laterolog tool. The method can be applied to any lateral logging tools for the detection characteristics and optimum design of the tool＇s structure.

关 键 词：电法测井 电流势法 直流电 电流线 双侧向测井仪器 

分 类 号：P631.811[天文地球—地质矿产勘探]