An underground cable connection device

Abstract

The invention discloses an underground cable docking device, which comprises a cover body, a commutating and voltage-stabilizing device, a metal cover, a coil, an upper metal post, an upper connection structure, a lower connection structure and a metal base. According to the underground cable docking device, the lower connection structure and the metal base can be connected with a motor of an underground submerged pump through a lower cable and directly put into a well, an upper cable is connected with the upper connection structure and then the upper connection structure and various components connected therewith are put into the well along with the center of a pipeline; the metal cover and the upper metal post generate electromagnetic suction force through electrifying the coil; and furthermore, due to the dead load of the upper cable, the upper connection structure and the components connected with the upper connection structure, the metal base and the bottom of the metal cover are close to each other and are docked and the lower connection structure and the upper connection structure are docked for electric conduction. The upper cable, the upper connection structure and the components connected with the upper connection structure can be put into the well along with the center of the pipeline, so that the cables are prevented from being extruded and damaged by the well wall, and meanwhile, the problem of downhole junks caused by friction with the well wall is solved.

Description

technical field [0001] The invention relates to the field of petroleum electric machinery, in particular to an underground cable docking device. Background technique [0002] In oilfield development, electric submersible pump has always been an important part of artificial lift technology. In recent years, the application of submersible screw pump and linear motor has made the technology of submersible electric pump oil production develop rapidly. Increase, will gradually replace the surface pumping unit oil production process. [0003] In the prior art, the crude oil in the well is often transported upward through an electric submersible pump. The installation position of the electric submersible pump is 1,000 meters deep in the well, and the electric submersible pump uses a cable to supply power to the downhole motor. The method is to connect the cable with the submersible electric pump on the ground, and then tie the cables to the outer wall of the oil pipe one by one, a...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of cable damage and downhole falling objects in the prior art, the embodiment of the present invention provides a downhole cable docking device

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