A tc bearing connection structure

Abstract

The invention discloses a TC bearing connecting structure. The TC bearing connecting structure comprises a lower joint, an accessory and a center rod which are connected through a bearing main body, and the bearing main body is composed of a bearing inner ring assembly and a left-hand-thread lower bearing assembly which are mutually connected; the bearing inner ring assembly, the lower joint and the center rod are sequentially connected; a carbide tip is inlaid in the contact face of the accessory, and the accessory is connected to the bearing inner ring assembly; the left-hand-thread lower bearing assembly is connected to the accessory, and the accessory and the left-hand-thread lower bearing assembly are connected into a whole through a vulcanized lower bearing adjusting pad between theouter cylinder face of the left-hand-thread lower bearing assembly and the accessory; and a vibration reducing fitting is arranged between the bearing main body and the accessory. According to the TCbearing connecting structure, the carbide tips are inlaid in matched faces such as the cylinder face and the end face of the TC bearing connecting structure to reduce abrasion, a drilling fluid passesthrough a gap between the inner and outer bearing carbide tips to cool and lubricate the bearing contact part, then by using the vibration reducing fitting, impact and vibration, acting on the carbide tips, of a system are reduced, and thus the service life of a TC bearing is prolonged.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling tools, in particular to a TC bearing connection structure. Background technique [0002] The failure analysis of oil drilling tools shows that a large part of them is caused by the failure of bearings. Due to the complex conditions of high temperature, high pressure, vibration and impact, TC bearings often have problems such as excessive wear, tissue overheating and cemented carbide sheet breakage. Therefore, in order to prolong the service life of TC bearings, materials with good wear resistance are usually used. In order to prevent material phase change, a reasonable lubrication and cooling scheme needs to be designed. In addition, the impact on the cemented carbide needs to be reduced. force. At present, the life of TC bearings is an important factor affecting the service life of drilling tools. Contents of the invention [0003] The purpose of the present invention is to provid...

AI Technical Summary

Problems solved by technology

Due to the complex conditions of high temperature, high pressure, vibration and impact, TC bearings often have problems such as excessive wear, tissue overheating and cemented carbide sheet fragmentation.

Images