井下电磁换能器结构设计与COMSOL有限元仿真  

Structural design of downhole electromagnetic transducer and its finite element simulation with COMSOL

作　　者：马海峰 康伟[1] 康忠健[1] 龚大建 MA Haifeng;KANG Wei;KANG Zhongjian;GONG Dajian(College of Information and Control Engineering,China University of Petroleum,Qingdao 266580,China;Tongren Zhongneng Natural Gas Co.,Ltd.,Tongren 554300,China)

机构地区：[1]中国石油大学(华东)信息与控制工程学院,山东青岛266580 [2]铜仁中能天然气有限公司,贵州铜仁554300

出　　处：《现代电子技术》2019年第22期155-158,共4页Modern Electronics Technique

基　　金：“十三五”国家科技重大专项-大型油气田及煤层气开发(2016ZX05025004)~~

摘　　要：针对页岩气开采产能低的问题,参考油井的振动增产原理,根据电磁学理论提出一种可扫频的井下电磁换能器结构设计方案。由于换能器直径受到油管内径的限制,为达到最优电磁效果,在Matlab中编程对铁芯几何参数优化分析。最后在COMSOL软件中选择“AC/DC,Magnetic”与“Structural Mechanics,Solid Mechanics”模块构建电磁场与固体力学场的多物理场耦合模型并做瞬态研究。研究结果验证了换能器结构设计方案的可行性,为页岩气增产提供了一种新的途径。With reference to the vibration increase production principle of oil well,a structural design scheme of downhole electromagnetic transducer with sweep frequency is proposed according to the electromagnetism theory to improve the capacity of shale gas exploitation.Since the transducer diameter are limited by the tubing diameter,the geometric parameters of iron core are optimized and analyzed by programming in Matlab to achieve the optimal electromagnetic effects.In the COMSOL software,the"AC/DC,Magnetic"and"Structural Mechanics,Solid Mechanics"modules are selected to construct the multi physics cou pling model of the electromagnetic field and the solid mechanical field for transient study.The research results verify the feasibil ity of the structural design scheme of the transducer,which provides a new pathway to increase shale gas production.

关 键 词：电磁换能器 结构设计 有限元仿真 增产 几何建模 仿真分析 

分 类 号：TN712.1[电子电信—电路与系统] 34[电气工程—电器] TM502