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Downhole cable protector

A technology for optical cable protection and protectors, which is applied in light guides, optics, instruments, etc., can solve the problems of not considering the effective and safe cooperation between optical cable protectors and centralizers, and the risk of damage to optical cables by centralizers, etc., to achieve high-quality cementing Quality, prevent up and down movement, save working time

Pending Publication Date: 2018-11-02
陕西延长石油国际能源化工有限公司
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Problems solved by technology

According to research, there have been cases where the depth of running is less than 1000 meters. However, due to the shallow depth of the casing in this case, no centralizer was used on the casing. Therefore, the risk of damage to the optical cable by the centralizer was not considered, nor was it considered. Effective and safe cooperation of optical cable protector and centralizer

Method used

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Embodiment Construction

[0034] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0035] see Figure 1 to Figure 5 , the downhole optical cable protector, including a first protector body 1 and a second protector body 2, and the first protector body 1 and the second protector body 2 are movably connected by a shaft 6, when in use, the downhole optical cable protector sleeve Set on the outside of the collar 9 on the casing 11, the optical cable is placed between the collar 9 and the downhole optical cable protector, and one end of the first protector body 1 connected to the second protector body 2 is respectively provided with a first protrusion. 7 and the second protrusion 8, and the first protrusion 7 and the second protrusion 8 are respectively provided with a first connection hole and a second connection hole that can communicate, and the shaft 6 is inserted through the first connection hole and the second connection hole. In the two connecting...

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Abstract

The invention discloses a downhole cable protector comprising a first protector body and a second protector body which are movably connected by a shaft. When used, the downhole cable protector sleevesthe outer side of a coupling on a casing pipe and an optical cable is placed between the coupling and the downhole cable protector. The downhole cable protector achieves the centralization effect ofa casing centralizer, ensures the smooth return of well cementation cement slurry, and also has a function of protecting an optical fiber cable.

Description

technical field [0001] The invention relates to the field of optical cable protection, in particular to an underground optical cable protector. Background technique [0002] Optical fiber has been widely used in military industry, communication, fire protection, construction, and other fields. Optical fiber has the advantages of no electromagnetic interference, corrosion resistance; passive real-time monitoring, electrical insulation, good explosion-proof performance; small size, light weight, can be bent; high sensitivity, long service life; long transmission distance, easy maintenance and so on. Therefore, in recent years, in industries such as oil and gas, geothermal energy development, etc., optical fibers have also received more and more attention and attention. They are mainly used for temperature measurement and pressure measurement. However, due to the material of the optical fiber, it is relatively fragile and easy to break. , the ability to resist compression and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/4429
Inventor 高海仁李力刘建宏杨瑞涛卢雄龙安杰熊文学杨超辉侯学明马庆阳李建明申超林明
Owner 陕西延长石油国际能源化工有限公司
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