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Lateral electrode assembly of petroleum well logging instrument and manufacturing method thereof

An electrode assembly, oil logging technology, applied in wellbore/well components, measurement, earth-moving drilling, etc., can solve the problems of a large number of instrument parts, inconvenient installation and maintenance, and difficulty in ensuring electrode insulation.

Active Publication Date: 2021-04-13
CNPC GREATWALL DRILLING ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the insulation of the electrodes is not easy to ensure, the number of instrument parts is large, and it is not easy to install and maintain due to the need for internal oil injection.

Method used

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  • Lateral electrode assembly of petroleum well logging instrument and manufacturing method thereof
  • Lateral electrode assembly of petroleum well logging instrument and manufacturing method thereof
  • Lateral electrode assembly of petroleum well logging instrument and manufacturing method thereof

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Embodiment Construction

[0018] In one aspect of the present invention, a lateral electrode assembly of a petroleum well logging tool is provided. figure 1 A longitudinal cross-sectional view of a lateral electrode assembly 100 of a petroleum logging tool according to an embodiment of the present invention is schematically shown. exist figure 1 In the illustrated embodiment, the lateral electrode assembly 100 is symmetrical about the longitudinal centerline X, so only the upper half of the lateral electrode assembly 100 is shown.

[0019] like figure 1 As shown, the lateral electrode assembly 100 includes a support body 101 , an insulating layer 102 , a fiber-reinforced resin layer 103 , one or more wires 104 , and a ring electrode 105 .

[0020] The supporting body 101 is a hollow tubular member, which acts as a pressure bearing. In one embodiment, the support body 101 can withstand a pressure of, for example, 140 MPa. In one embodiment, the support body 101 may be made of metal, such as stainles...

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Abstract

Disclosed are a lateral electrode assembly of a petroleum well logging instrument and a manufacturing method thereof. The lateral electrode assembly includes a support body, an insulating layer, a fiber-reinforced resin layer, one or more wires, and a ring electrode. The side electrode assembly does not require oil injection and a pressure balance device, which simplifies the structure of the electrode assembly and reduces maintenance work.

Description

technical field [0001] The invention relates to a petroleum well logging instrument, more particularly to a lateral electrode assembly of a petroleum well logging instrument and a manufacturing method thereof. Background technique [0002] There are various structures of the lateral electrode assembly of petroleum logging instruments at home and abroad. Usually, internal oil injection is used to achieve pressure balance, and the electrode and insulating section are sequentially sleeved on the mandrel. The disadvantage of this structure is that the insulation of the electrodes is not easy to ensure, the number of instrument parts is large, and it is not easy to install and maintain due to the need for internal oil injection. Contents of the invention [0003] The present invention aims to solve the defects of the prior art, which is achieved through the following technical solutions. [0004] In one aspect of the present invention, a lateral electrode assembly of a petrole...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B47/00E21B49/00
Inventor 姚春明白庆杰肖占山朱瑞明胡海涛谢昱北邵琨张浩
Owner CNPC GREATWALL DRILLING ENG
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