Testing device for rotors of mud pulse generators

Abstract

The invention discloses a testing device for rotors of mud pulse generators. The testing device comprises an outer barrel and a mud circulating system. An upper sealing cap and a lower sealing cap are arranged at the two ends of the outer barrel, and a sealed protection shell is arranged inside the outer barrel and fixed in the outer barrel through an upper centering guide and a lower centering guide. A rotor is arranged outside the sealed protection shell, a magnetic shaft is arranged in the sealed protection shell and driven by a high-power motor, and when the magnetic shaft rotates, the rotor is magnetically coupled with the magnetic shaft and rotates along with the magnetic shaft. The mud circulating system comprises a mud pond and a circulating pump, mud in the mud pond is conveyed into the outer barrel by means of the circulating pump through a mud inlet, and then flows back into the mud pond through a mud outlet. The testing device can be used for screening the rotors and is used for improvement of the production technique for the rotors, and therefore abrasion resistance of the water-wetted rubber bearing rotors is improved, and the eccentric wearing phenomenon in the rotor working process is avoided; and accordingly, structural design of the mud pulse generators is improved, and the situation that production accidents are generated when unqualified products are applied to wells is avoided.

Description

technical field [0001] The invention relates to the technical field of logging-while-drilling instruments in oil and gas drilling, in particular to a mud pulse generator rotor testing device. Background technique [0002] The mud positive pulse generator is currently an important component of the wireless measurement-while-drilling system and a communication tool between downhole equipment and surface equipment. The rotor is an important part of the mud pulse generator. It rotates rapidly around the shaft to provide power for the mud pulse generator and also the power source for the hydraulic system of the pulse generator. The rotor is immersed in the mud to work, the working environment is extremely harsh, the eccentric wear phenomenon is very serious, and the service life is greatly shortened. At the same time, there is a lack of testing methods in the rotor development process, and the risk of on-hole testing is high. In order to reduce production costs and operational r...

AI Technical Summary

Problems solved by technology

The rotor is immersed in the mud to work, the working environment is extremely harsh, the phenomenon of eccentric wear is very serious, and the service life is greatly shortened

At the same time, there is a lack of testing methods in the rotor development process, and the risk of on-hole testing is high. In order to reduce production costs and operational risks, it is necessary to develop a rotor testing device

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