Full sealed intelligent wire passing drill pipe joint

Abstract

The invention discloses a full sealed intelligent wire passing drill pipe joint. A male joint and a female joint are screwed and sealed by a first thread pair and a second thread pair, a male joint sealing insulation contact ring is arranged on the outer wall of the male joint, and is located between the first thread pair and the second thread pair, a male joint metal contact body is arranged on the outer wall of the male joint sealing insulation contact ring in an embedding manner, a male joint wire hole is formed in the male joint, and a male joint embedded wire is embedded in the male joint sealing insulation contact ring; a female joint sealing insulation contact ring is arranged on the inner wall of the female joint, a female joint metal contact body is arranged on the inner wall of the female joint sealing insulation contact ring in an embedding manner, a female joint wire hole is formed in the female joint, and a female joint embedded wire is embedded in the female joint sealing insulation contact ring, the male joint metal contact body closely contacts with the female joint metal contact body. The full sealed intelligent wire passing drill pipe joint is simple in structure, low in cost, and solves the problem of sealed insulation and high vibration on the premise that power and signal transmission and torque transmission are guaranteed.

Description

technical field [0001] The invention relates to a sealed over-the-line drill pipe joint capable of transmitting electrical signals and communication signals in the drill pipe, and can be widely used in intelligent over-the-line drill pipes, tool joints while drilling and other application occasions with the same requirements. Background technique [0002] From the late 1980s to the early 1990s, the drilling technology has put forward the need to solve the requirement of real-time two-way high-speed transmission of measurement and control data while drilling, and at the same time, the requirement of power transmission downhole while drilling. So began to study smart drill pipe. The main reasons are as follows: 1. The wireless pulse transmission capability is too low, and the intelligent drill pipe can increase the transmission capability by tens of thousands of times; 2. Electric energy is needed underground, and the power supply capacity of batteries and / or underground turbi...

AI Technical Summary

Problems solved by technology

All components required for electrical connection are installed at the end, which hardly reduces the inner diameter of the joint; one disadvantage is that the metal surface seal of the extended end is easily damaged, which will greatly affect the surface sealing effect; second, because the conductive ring is on the end In the first part, when the drill pipe is bent, the displacement between the conductive ring and the sealing surface is large, which will greatly affect the surface sealing effect; third, in a strong vibration environment, the displacement between the sealing surfaces at the end will also increase, which will also affect the surface sealing effect. Its sealing effect

[0005] (2) Schlumberger (patent number: WO2009 / 133474A2) adopts a wet joint installed at the inner diameter of the drill pipe joint, and its joint occupies a large amount of space in the inner diameter of the drill pipe, which greatly reduces the circulation area of ​​the drilling fluid; in addition , the wet joint and the drill pipe joint body are two-body structure, so the anti-vibration performance is not good

[0006] (3), Southwest Petroleum University's intelligent drill pipe compensation type electrical joint (patent application number: 200710049485.3), adopts the same end lengthening method as GRANT Company, and its improvement is that the insulator at the end is changed to an insulating elastomer, which can be conductive The ring interface provides the initial compressive force, but several disadvantages of the end-lengthening method persist in this design

[0007] According to the above analysis, the current design can not fully meet the application requirements, it is necessary to design a new structure, so that the electric contact intelligent drilling can be developed

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