Power and signal transmission drill stem

Abstract

The invention relates to a power and signal transmission drill stem for exploration and drilling of petroleum geology. The power and signal transmission drill stem can realize the real-time bidirectional transmission of signals and can transmit strong electricity to shaft bottoms. The technical scheme of the power and signal transmission drill stem is as follows: the transmission drill stem comprises a special connector of the drill stem, an electric connector and a power and signal transmission drill stem body, wherein the special connector of the drill stem comprises a special male connector of the drill stem and a special female connector of the drill stem; a male electrical connector is arranged at the special male connector of the drill stem, and a female electrical connector is arranged at the special female connector of the drill stem; the male electrical connector and the female electrical connector comprise conducting rings, insulation seal rings, metal baffle rings, connecting conductors, metal baffle ring sealing materials, insulation elastic bodies and locating pins; and an inner pipe, a body insulation material, a body transmission conductor and a drill stem body are arranged in the power and signal transmission drill stem body. The power and signal transmission drill stem has the characteristics of simple structure, low cost, high efficiency, long service life and the like and is used for wired real-time bidirectional high-rate data transmission of information and power transmission in the drilling.

Description

technical field [0001] The invention relates to a drilling tool used for petroleum geological exploration drilling, which is a power and signal transmission drill pipe with multiple functions. Background technique [0002] As far as signal transmission is concerned, a variety of signal transmission technologies have been developed, such as mud pulse technology, electromagnetic wave technology, and acoustic wave technology. Analysis and Control. However, with the continuous increase of drilling depth, drilling difficulty and drilling complexity, the signal transmission speed and reliability of these technologies can no longer meet the needs of modern rapid development of drilling technology. [0003] More importantly, there are more and more power-consuming hardware such as detection instruments and electric drive devices or tools used in underground mines, and more and more electric power needs to be provided. The original technical system only relies on batteries or mud tu...

AI Technical Summary

Problems solved by technology

However, with the continuous increase of drilling depth, drilling difficulty and drilling complexity, the signal transmission speed and reliability of these technologies can no longer meet the needs of modern rapid development of drilling technology

[0003] More importantly, there are more and more power-consuming hardware such as detection instruments and electric drive devices or tools used in underground mines, and more and more electric power needs to be provided. The original technical system only relies on batteries or mud turbine generators The power provided can no longer meet the requirements, and it is necessary to efficiently transmit surface power to the bottom of the well through the drill string

[0004] As early as the late 1930s, Crites et al. carried out the structural design of electric drilling, but it was not applied

In the 1940s, the former Soviet Union started the research on intelligent drill pipes, and successfully developed an electric downhole drill, which is still in use, but due to the poor reliability of its electric plug, the joints often fail due to wear after drilling about 1000m, and the joints Occupies a large inner diameter space, which greatly increases the drilling fluid circulation pressure loss

Therefore, the structure has not been effectively generalized

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