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A shielding assembly used for a joint seat of a well logging instrument

A joint seat and logging tool technology, which is applied in wellbore/well components, measurement, earthwork drilling and production, etc., can solve the problems of not being fully utilized, and achieve the effects of shortening the length of the tool, reducing interference, and optimizing the arrangement

Inactive Publication Date: 2019-02-19
CNPC GREATWALL DRILLING ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general logging tools, if there is no special assembly requirement, most of the space in the joint seat is idle and not fully utilized except for the line-passing function

Method used

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  • A shielding assembly used for a joint seat of a well logging instrument
  • A shielding assembly used for a joint seat of a well logging instrument

Examples

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Embodiment Construction

[0020] The following description is merely exemplary in nature and is not intended to limit the invention, its application or uses.

[0021] refer to figure 1 , figure 1 is a perspective view of an exemplary embodiment of a shield assembly for a tool subhead. In this embodiment, the shielding assembly may include a connector seat 11 , a pad 12 , and a shielding cover 14 . Preferably, the spacer 12 and the shielding cover 14 can be made of high-permeability materials, such as high-permeability stainless steel, which is conducive to better electromagnetic shielding. In addition, the shielding assembly may further include a high-voltage module 13 , M3 screws 15 , M2.5 screws 16 , and M4 screws 17 . The high-voltage module 13 can be fixed in the spacer 12 by M2.5 screws 16 , the shielding cover 14 can be installed on the upper surface of the spacer 12 by M3 screws 15 , and the spacer 12 can be installed in the joint seat 11 by M4 screws 17 . The spacer 12 and the shielding cov...

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PUM

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Abstract

The invention discloses a shielding assembly for a logger connector base. The shielding assembly comprises the connector base (11), a cushion block (12) and a shielding cover (14), wherein the cushion block (12) is located in the connector base (11) and is provided with a sunk groove, and the shielding cover (14) is matched with the cushion block (12) so that the sunk groove can be closed.

Description

technical field [0001] The invention relates to the field of well logging, and more particularly relates to a shielding assembly for a joint seat of a well logging tool. Background technique [0002] In the field of well logging, high-voltage components such as high-voltage power modules are often used in the electronic circuit part of well-logging instruments. According to Maxwell's electromagnetic field theory, moving charges generate a magnetic field in space, and according to the law of electromagnetic induction, changes in the surrounding magnetic field will generate potential changes in a closed circuit, thereby forming an induced current. It can be seen that the strong magnetic field generated by high-voltage components will have a greater impact on other surrounding circuits, thereby having a greater impact on the test results. [0003] Magnetic shielding uses ferromagnetic materials with high magnetic permeability to make a shield to shield the magnetic field. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00
Inventor 袁彩华于昊谢昱北
Owner CNPC GREATWALL DRILLING ENG
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