Intelligent drilling rod compensation-type electric joint

Abstract

The intelligent drill pipe compensation type electrical joint is used in intelligent drilling, which can not only establish a wired real-time two-way closed-loop information high-speed data transmission channel, but also transmit electric energy to the downhole. The intelligent drill pipe compensation type electrical joint is mainly composed of two parts: male and female electrical joints. The current or signal is transmitted from the upper wire to the conductive ring of the male electrical connector, and then transmitted to the conductive ring of the female electrical connector through the close contact of the conductive ring of the male and female electrical connectors, and then flows into the wire connected to the conductive ring , circulate in turn, and finally transmit the electricity and signal to the bottom of the well; similarly, the loop of current or signal is realized through another pair of conductive rings of the male and female electrical connectors. The invention patent has the characteristics of automatic wear compensation, self-cleaning, vibration absorption, easy replacement, etc., and has a simple structure and low cost, and can be used in any type of drill string for high-speed data transmission and power transmission of wired real-time two-way closed-loop information, especially in Complex structure wells, special process wells.

Description

Technical field [0001] The invention relates to an intelligent drill pipe compensation type electric joint used in intelligent drilling, which can not only establish a wired real-time bidirectional closed-loop information high-speed data transmission channel, but also transmit electric energy downhole. Background technique [0002] The so-called intelligent drilling refers to a drilling method that can not only establish a wired real-time two-way closed-loop information high-speed data transmission channel, but also transmit electric energy downhole. To realize intelligent drilling, the problem of current flow between drill pipe joints must be solved. For this reason, an electrical connector must be designed, which requires the electrical connector to work in a high-temperature, high-pressure and conductive drilling fluid in a limited space, and to achieve zero leakage of current. [0003] As early as the late 1930s, Crites et al. carried out the structural design of electr...

AI Technical Summary

Problems solved by technology

[0014] In order to overcome the shortcomings of the existing electrical joints, such as no automatic compensation after the contact surface is worn out, and no contact pressure between the contact surfaces, which affects the life and sealing performance of the drill pipe electrical joint, the present invention provides an intelligent drill pipe compensation type electrical joint. It can realize the self-cleaning of the contact surface, automatically compensate the wear after wear, and the contact surface has contact pressure, thereby increasing the service life and sealing performance of the drill pipe electrical joint

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