Oil duct communication device

Abstract

The invention discloses an oil duct communication device, belonging to the technical field of down-hole drilling tool equipment. The oil duct communication device is characterized in that a first joint part comprises a first shell, a first joint and a first central pipe; the first joint is provided with a first medium channel and a first central hole; a first valve core thimble is fixed in the first medium channel; the first valve core thimble is provided with a first annular groove; a first O ring is sheathed on the first annular groove; the second joint part comprises a second shell, a second joint and a second central pipe; the second joint is provided with a second medium channel and a second central hole; a second valve core thimble is fixed in the second medium channel; the second valve core thimble is provided with a second annular groove; a second O ring is sheathed on the second annular groove; a circular ring is connected to a joint pipe; and one end of the joint pipe is inserted into the first central hole, and the other end is inserted into the second central hole. The oil duct communication device can implement automatic communication of the oil duct, prevents the down-hole motor from damage, and effectively ensures the stable operation of the down-hole motor.

Description

technical field [0001] The invention relates to the technical field of downhole drilling equipment, in particular to an oil passage communication device suitable for downhole drilling motors. Background technique [0002] Due to the special environment in the downhole, the equipment working in the downhole is all slender structure, and the inside is filled with thin oil medium. At present, this type of equipment is mostly manufactured as a whole, which will inevitably bring many problems to the manufacture, assembly and transportation of the equipment. For example: the overall processing of the equipment casing, the limitation of assembly space, and the excessive length of transportation. [0003] The above-mentioned problems can be solved by using segmented manufacturing and assembly. However, since the downhole working equipment is filled with thin oil, after the equipment is manufactured in segments, how to realize the connection of the oil passage between the segmented ...

AI Technical Summary

Problems solved by technology

[0007] For the segmented submersible motor disclosed in this patent document, when assembling, the adjacent submersible motors are first connected with cables through plugs, then the motor shafts of adjacent submersible motors are connected through couplings, and finally the adjacent submersible motors are connected through flanges. The outer casing of the oil motor; because the submersible motors are connected in sections, the length of each submersible motor can be very short, which is convenient for processing the motor shaft; however, before the submersible motors work, the submersible oil of each segment needs to be Only when the motors are connected together can the communication of the internal medium be realized to meet the work needs, the installation and docking is quite cumbersome, and improper operation may easily cause damage to the submersible motor and affect the normal operation of the submersible motor

Images