The reliability Analysis of Microresistivity Scanning Tool Is Based on System Structure

Abstract

 By controlling the position of the logging tool, the system can ensure that it can accurately descend or rise along the hole, and then measure the required formation properties to obtain higher quality formation data. In order to study the structural reliability of microresistivity scanning logging tool, the statics analysis of the microresistivity scanning logging system is carried out first. It is concluded that the maximum total deformation of the microresistivity scanning logging system is 0.04851m and the maximum equivalent stress is 9.387MPa. Secondly, the load and material parameters of each component of the push-pull system are taken as input variables, and the maximum equivalent stress and maximum total deformation are taken as output variables. Through ANSYS Workbench software, the structural strength and stiffness reliability of the push-pull system are analyzed based on Six Sigma theory. Finally, according to the probability distribution table and probability distribution histogram of the input parameters to the output parameters, when the maximum allowable deformation is 0.048519m, the stiffness reliability of the push-rely system structure is 0.98793, and when the maximum allowable stress is 9.387MPa, the structural strength reliability of the push-rely system is 0.96747.