Vekeryk V. Acoustic testing of geometrical parameters of casing strings in a well

Is shown and prove that most informative parameters, which responsible for operational reliability of casing strings and which determine their actual technical condition, are the geometrical parameters. According to theoretical and experimental researches the means of the acoustic testing of geometrical parameters of pipes from their internal side and methodology of application with this purpose an acoustic pulse-echo method of the testing in operational conditions of a well was developed. Dependence of a speed of longitudinal ultrasonic wave propagation in a material of casing string and sensitivity of an acoustic tract from the operational factors experimentally are investigated. The mathematical model of the testing (of a work of an acoustic tract and estimation of an acoustic field) in conditions of a well is developed. The complex of means of the acoustic testing of geometrical parameters of casing strings in a well is developed.