In this article, we have been designed a kind of electrode change device for distributed high density resistivityinstrument and provided its theory and work flow and its circuit diagram.
Cased hole formation resistivity (CHFR) logging tool is a new-type instrument which is developed to measure and evaluate formation remaining oil saturation in casing hole of oilfields.
套管井地层电阻率测井仪是为了满足油田在套管井中测量和评价地层剩余油饱和度而研制的新型仪器。
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It is the main purpose of instrument calibration to ensure an accurate and reliable magnitude of resistivity log parameters.