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电阻率成象测井是石油测井中最新一代的测井方法 ,对测井仪器响应的精确模拟 ,可以为此类仪器的优化设计和资料解释提供依据。针对电阻率成象仪激励条件比较复杂的特点 ,同时考虑井下地层固有的非均质性 ,选用有限元方法对仪器产生的位场进行分析 ,并对一些典型的地层模型进行模拟 ,给出其电阻率井壁成象结果 ,直观反映井壁地层特征
Resistivity imaging logging is the latest generation logging method in petroleum logging. The accurate simulation of logging instrument response can provide the basis for the optimal design and data interpretation of such instruments. In view of the more complex excitation characteristics of the resistivity imager and considering the inherent heterogeneity of the downhole formation, the finite element method is used to analyze the potential field generated by the instrument. Some typical formation models are simulated, Resistivity wall imaging results, an intuitive reflection of the borehole stratigraphic features