%0 Journal Article
%T CALCULATION OF SENSITIVITY FIELD FOR ELECTROMAGNETIC TOMOGRAPHY IN MULTIPHASE FLOW WELL LOGGING<br>多相流动电磁波成像测井测量敏感场计算
%A ZHAO LIANG
%A <br>赵亮
%A 吴锡令
%J 地球物理学报
%D 2003
%I 
%X The sensitivity field is of great importance for the optimal design of the Electromagnetic Tomography (EMT) in multiphase flow well logging tools and images reconstruction. We calculate using a numerical method. For the facility of analysis, the calculation is performed in 2 planes based on the symmetry of the sensor, though the sensitivity field is 3 dimensional. The analysis contains 2 connected steps. First, the potential distribution within the measure array is calculated using FEM (Finite Element Method). Then, the gradient of the potential is acquired according to the numerical computation. The result shows that the sensitivity field has an arc-shape within the region from transmitting electrode to measuring electrode, and it can be expressed approximately using an exponential function.
%K Electromagnetic tomography
%K Multiphase flow
%K Imaging logging
%K Sensitivity field<br>电磁波
%K 成像测井
%K 敏感场
%K 多相流
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=12A8583B6766AC10&yid=D43C4A19B2EE3C0A&vid=D997634CFE9B6321&iid=B31275AF3241DB2D&sid=971ECAFE8682845B&eid=3893EBCAC6700388&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=7&reference_num=13