The casing is the overall structure of the well
transit time, market time and deflection time, and the dynamic fracture toughness experiments on an oscillometric impact testing machine. Petroleum casing manufacturers believe that it is feasible to calculate the dynamic L using the static flat method, that is, how to deal with the problems of inertial force shadow noise and vibration and dynamic deformation.
The loading rate and strain rate of static or quasi-static loads are relatively low, without taking into account the effects of fracture and deformation of the nature of the material on the fracture process brought by the elastic phase transition at high load rates and deformation, and the stress is The response speed of the strain sound is lower than the sound speed of the data, and has no effect on the deformation rate of the elastic deformation performance of the data.
But in the stage of plastic deformation, the process of plastic deformation is relatively slow. Petroleum casing manufacturers believe that when sufficient plastic deformation requires more time, when the high load rate and strain rate exceed the critical deformation rate required for plastic deformation, the yield point of the data will pass through the process of restraint and constraint plastic deformation. Increasing the number of plastics that can reduce the hardening process is also affected.
The loading rate and strain rate of static or quasi-static loads are relatively low, without taking into account the effects of fracture and deformation of the nature of the material on the fracture process brought by the elastic phase transition at high load rates and deformation, and the stress is The response speed of the strain sound is lower than the sound speed of the data, and has no effect on the deformation rate of the elastic deformation performance of the data.
But in the stage of plastic deformation, the process of plastic deformation is relatively slow. Petroleum casing manufacturers believe that when sufficient plastic deformation requires more time, when the high load rate and strain rate exceed the critical deformation rate required for plastic deformation, the yield point of the data will pass through the process of restraint and constraint plastic deformation. Increasing the number of plastics that can reduce the hardening process is also affected.
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