Downhole bearing vibration experiment device

Abstract

The invention discloses a downhole bearing vibration experiment device, which comprises a vibration table, a rotary output table, a drill rod, a bearing support cylinder, a support sliding table, a support sliding table clamp and a vibration table clamp, and is characterized in that the vibration table clamp is arranged on the surface of the vibration table, and the support sliding table clamp is arranged on the surface of the support sliding table; one end of the drill rod is fixed on the surface of the vibration table through the vibration table clamp, and the other end penetrates through the support sliding table clamp and is connected with the bearing support cylinder. The downhole bearing vibration experiment device can realize simulation for a downhole rotary vibration operation environment, wherein the simulation comprises simulation for an upper excitation source of a power motor, simulation for relative movements of inner and outer rings of a bearing group and simulation for a downhole working plane. The downhole bearing vibration experiment device has the functions of providing rotation, simulating downhole frictional cutting and transferring the vibration, can provide simulated conditions for vibration testing of downhole tools, is used for testing vibration characteristics of downhole bearings and provides a reference basis for an optimization design of the bearing group and bottom hole assemblies.

Description

technical field [0001] The invention relates to the field of drilling and drilling tool experiments, in particular to a downhole bearing vibration experiment device. Background technique [0002] Bearings are one of the key components of downhole power drilling tools. During drilling, they are subjected to harsh conditions such as rotational friction, vibration, and impact, which may easily cause bearing failure. The reliability and life of bearings have become constraints for the development of downhole power drilling tools. where the focus is. Due to the technical blockade of foreign countries, there is no complete set of specifications for downhole bearings in my country, and the understanding of its process performance is not comprehensive enough. Its specific performance and parameters still need to be explored and determined. It is urgent to explore its performance characteristics and use conditions from various aspects. [0003] Vibration, as a key state in the opera...

AI Technical Summary

Problems solved by technology

Due to the technical blockade of foreign countries, there is no complete set of specifications for downhole bearings in my country, and the understanding of its process performance is not comprehensive enough. Its specific performance and parameters still need to be explored and determined.

[0003] Vibration, as a key state in the operation process of power drilling tools, has attracted the attention of researchers. Some progress has been made in the study of the impact of vibration on the failure of threads and drill cutting pieces, but the impact of vibration on bearing failure still needs to be studied.

At present, the research on vibration is generally still analyzed on the scale of the whole drilling tool, and there is no separate analysis on the vibration characteristics of the dynamic drilling tool bearing.

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