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Portable connection structure of coaxial shielded wires between sealed chambers under high temperature and high pressure

A connection structure and shielded wire technology, which is applied in the directions of measurement, wellbore/well components, earthwork drilling, etc., can solve the problems of poor matching of heat shrinkable tube diameter, unreliable connection, sealing, and unsightly appearance, etc., and achieve communication The effect of stable and reliable connection, good sealing performance and reliable sealing performance

Active Publication Date: 2019-01-18
CNPC GREATWALL DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this conventional method is that the diameter of the heat shrinkable tube is not well matched, the connection and sealing are not reliable, and the appearance is not beautiful at the same time, and the maintenance is time-consuming

Method used

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  • Portable connection structure of coaxial shielded wires between sealed chambers under high temperature and high pressure
  • Portable connection structure of coaxial shielded wires between sealed chambers under high temperature and high pressure
  • Portable connection structure of coaxial shielded wires between sealed chambers under high temperature and high pressure

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Embodiment Construction

[0028] Such as figure 1 with figure 2 As shown, the quick rubber sleeve plug joint is assembled in a certain order by the rubber sleeve 11, the shielding connection sleeve 12, the insulation sleeve 13, the core connection sleeve 14, the copper ring 15, the twist needle 16, the heat shrinkable tube 17 and the twist needle holder 18. together and hang on the end of the coaxial shielded wire 19. The quick rubber sleeve plug connector is inserted on the coaxial sealing plug 110 to form a unilateral signal path, and at the same time, it plays the role of sealing the environment medium.

[0029] The cross-section of the coaxial shielded wire is as image 3 As shown, from outside to inside, each layer structure is an outer insulating layer 31 , a shielding harness layer 32 , an inner insulating layer 33 and a very thin conductive core 34 . Such as Figure 3A As shown, before assembly, the end of the coaxial shielded wire is processed into a certain structure: peel off a certain ...

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Abstract

The invention relates to a coaxial shielded wire portable type connecting structure between sealing cavities under high temperature and high pressure. The connecting structure composed of a rapid rubber sleeve connecting plug and a coaxial sealing plug and used under the conditions of high temperature and high pressure is provided. The connecting structure comprises the rapid rubber sleeve connecting plug and the coaxial sealing plug, wherein the rapid rubber sleeve connecting plug is composed of a rubber sleeve, a shielded connecting sleeve, an insulating sleeve, a core connecting sleeve, a copper ring, a twist pin, a twist pin base and a shrinkable tube. The connecting structure is convenient to install and maintain and stable and reliable in performance.

Description

technical field [0001] The present invention relates to a connection structure for communication between two sealed cavities in a petroleum logging instrument through a coaxial shielding wire, and more specifically relates to a fast rubber sleeve insert specially designed for coaxial shielding wires and working under high temperature and high pressure. Connector and coaxial sealing plug. Background technique [0002] Petroleum logging instruments must go deep into formations of different depths for measurement, and the ambient temperature and pressure increase with the increase of formation depth. Therefore, the design of all petroleum logging instruments must be able to withstand high temperature and high pressure working environments. Usually the effective electrical signal directly returned by the instrument from the surrounding geological environment is relatively weak, coupled with the influence of the complex geological structure of the stratum, such signal is even wea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B49/00
Inventor 黄涛韦海王刘越于洋吴翔
Owner CNPC GREATWALL DRILLING ENG