基于Ansoft Maxwell软件的局部导电体涡流场分析  

作　　者：唐石画 何博 孙佳昊 龚伟 常凯华 

机构地区：[1]西安石油大学电子工程学院

出　　处：《电子世界》2018年第6期121-123,共3页Electronics World

基　　金："国家自然科学基金(41604122)";"中国石油科技创新基金(2017D-5007-0305)";陕西省大学生创新创业训练计划项目"广域电磁法深层油气藏电磁响应特征研究(1472)"的联合资助

摘　　要：采用Ansoft Maxwell有限元分析软件,对海水介质中存在金属导电矿体的储层模型进行涡流场求解。分析了金属矿体电导率、矿体层厚度和海水层厚度等参数对电磁场响应的影响。数值计算结果表明,储层中电磁响应曲线的峰值随着金属导体电导率的增大而增大。随着铜导体层厚度的增加,感应电流密度最大值逐渐减小,并且最大值出现的位置由海水-金属导体的交界面逐渐向铜导体内部移动。在保持模型总厚度不变的条件下,随着上、下海水介质层厚度的减少和金属矿体层厚度的增加,感应电流密度在海水-铜导体介质层的交界面处有明显的抬升。以上结论为储层定性评价和异常体信息提取提供了理论依据。Using Ansofi Maxwell finite element analysis software to solve the existence of conductive metal ore body in seawater by eddy current field of the model to solve reservoir.Metal ore body conductivity and ore body thickness of layer thickness and water layer parameters on the influence of the electromagnetic response are analyzed.Numerical calculation results show that the peak value of the electromagnetic response curve of a reservoir with the increase of the conductivity of the metal conductor.With the increase of thickness of copper conductor layer, a maximum induced current density decreases, and the location of the maximum value appeared by the water-metal conductor interface gradually move to the inside copper conductor.Un- der the condition of the model of total thickness unchanged, with the upper and lower water dielectric layer thickness and the increase of the thickness of metal layer, induced current density in the sea-copper conductor boundary of dielectric layer has obvious rise.Qualitative conclusions for reservoir evaluation and provides theory basis for abnormal body intbrmation extraction.

关 键 词：ANSOFT MAXWELL 涡流场分析 海水介质 导电矿体 

分 类 号：TP311.52[自动化与计算机技术—计算机软件与理论]