SELECTION OF COMPOSITE MATERIAL IN ELECTROMAGNETIC LOG SENSOR

Subject of Research. The paper considers the issues of choosing an insulating material for a deep-sea electromagnetic log sensor. The effect of the insulating material characteristics on the operational factors of the sensor is studied. Method. Matlab program was used to analyze the effect of design parameters on the instrumental error of the sensor. For this purpose a mathematical model of the instrumental error component was built, and its evaluation was carried out. The stress-strain state of the sensor was simulated by the finite element method in the ANSYS Workbench application package. Analysis of insulating material peeling from the case during shrinkage was carried out in the Static Structural module. Fill simulation was performed in the Fluid Flow module. All materials are taken to be isotropic at calculations. Main Results. The effect of the insulating material characteristics on the instrumental error of the electromagnetic log sensor is shown. The design and technological issues of the insulating material choice are described. Recommendations on the choice of design parameters are given to reduce peeling of the material and the occurrence of sensors emptiness formed by filling with composite material. The validity of the recommendations is confirmed by computer simulation and experiments. Practical Relevance. The results obtained can be applied in the modernization, design and construction of new electromagnetic log sensors.