基于COMSOL的邻井旋转磁场分布规律研究  

Research on the distribution pattern of rotating magnetic fields in neighboring wells based on COMSOL

作　　者：刘童辉 王西平 夏庆康 LIU Tonghui;WANG Xiping;XIA Qingkang(School of Electronic Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China)

机构地区：[1]西安石油大学电子工程学院,陕西西安710065

出　　处：《石油化工应用》2025年第2期54-58,67,共6页Petrochemical Industry Application

摘　　要：由于旋转磁场受不同地层的影响,邻井旋转磁场的分布规律尚不明确。借助COMSOL有限元分析软件建立SAGD成对水平井旋转磁场模型,研究源距、磁源转速、地层电导率和地层相对磁导率对旋转磁场分布规律的影响。结果表明:源距满足径向距离计算理论;随着磁源转速的增大,传播深度越小;磁场信号在均匀与非均匀地层中传播规律大概一致,但当磁短节在地层分界面上时,由于磁短节的左右不对称性与地层上下地层的磁导率的不连续性会发生耦合现象,导致磁场分布规律产生变化。Due to the influence of different strata,the distribution of the rotating magnetic field in adjacent wells remains unclear.A SAGD paired horizontal well rotating magnetic field model was established using COMSOL finite element analysis software.The effects of source distance,magnetic source rotation speed,formation conductivity,and relative magnetic permeability on the distribution of the rotating magnetic field were investigated.Results indicate that the source distance conforms to radial distance calculation theory,as the rotation speed of the magnetic source increases,the propagation depth decreases.The propagation patterns of the magnetic field in homogeneous and heterogeneous formations are generally consistent.However,when the magnetic short segment is at the formation interface,coupling occurs due to the asymmetry of the magnetic short segment and the discontinuity of magnetic permeability between strata,resulting in changes in magnetic field distribution.

关 键 词：SAGD成对水平井 COMSOL有限元 旋转磁场 地层 

分 类 号：TE242.9[石油与天然气工程—油气井工程]