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Cable and manufacture method thereof

An optical cable and optical fiber technology, applied in the field of optical cable and its preparation, can solve the problems of poor hydrogen resistance performance of optical cable and increased optical fiber transmission loss, and achieve the effects of good tensile strength and compressive strength, and excellent comprehensive performance.

Active Publication Date: 2013-04-10
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide an optical cable with excellent hydrogen barrier performance in order to overcome the disadvantages of the existing optical cable with poor hydrogen barrier performance, which leads to the increase of optical fiber transmission loss

Method used

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  • Cable and manufacture method thereof

Examples

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preparation example Construction

[0027] The method for preparing an optical cable provided by the present invention includes forming a fiber paste layer 2, a first protective layer 3, a hydrogen barrier layer 4, and a second protective layer 5 covering the surface of the optical fiber 1 from the inside to the outside.

[0028] The present invention does not specifically limit the method of forming the fiber paste layer 2 and the first protective layer 3. For example, a metal layer can be coated on the outside of the optical fiber 1, and filled between the optical fiber 1 and the metal layer. Hydrogen barrier fiber paste, thereby forming the fiber paste layer 2 and the first protective layer 3. It should be noted that the method of filling the hydrogen barrier fiber paste between the optical fiber 1 and the metal layer may be various existing filling methods, for example, the hydrogen barrier fiber paste may be applied while covering the metal layer. The filling between the optical fiber 1 and the metal layer may...

Embodiment 1

[0041] This embodiment is used to illustrate the preparation of the optical cable provided by the present invention.

[0042] The hydrogen barrier fiber paste used in this example was purchased from Unigel Company, and the model was OPGW-400H.

[0043] (1) Preparation of materials for forming colloidal hydrogen absorbing agent layer 6:

[0044] 30 kg of hydrogen barrier fiber paste and 17 kg of palladium sulfate ethanol solution (concentration of 85% by weight) were mixed to obtain the material for forming the colloidal hydrogen absorbing agent layer 6. Wherein, in the obtained material for forming the colloidal hydrogen absorbing agent layer 6, based on the total mass of the hydrogen barrier fiber paste, the content of the palladium sulfate is 48% by weight.

[0045] (2) Preparation of materials for forming the hydrogen barrier layer 4:

[0046] Stir and mix 5 kg of carbon, 10 kg of silicon carbide and 11 L of ethanol to obtain a colloidal mixture.

[0047] (3) Preparation of optical c...

Embodiment 2

[0050] This embodiment is used to illustrate the preparation of the optical cable provided by the present invention.

[0051] The hydrogen-blocking fiber paste used in this embodiment was purchased from Unigel Company, and the model was 128FN-WB.

[0052] (1) Preparation of materials for forming colloidal hydrogen absorbing agent layer 6:

[0053] 30 kg of hydrogen barrier fiber paste and 10.5 kg of an ethanol solution of tantalum carbonate (85% by weight) were mixed to obtain the material for forming the colloidal hydrogen absorbing agent layer 6. Wherein, in the obtained material for forming the colloidal hydrogen absorbing agent layer 6, the content of the tantalum carbonate is 30% by weight based on the total mass of the hydrogen barrier fiber paste.

[0054] (2) Preparation of materials for forming the hydrogen barrier layer 4:

[0055] Stir and mix 8 kg of carbon, 7 kg of magnesium oxide and 14 L of ethanol to obtain a colloidal mixture.

[0056] (3) Preparation of optical cable: ...

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Abstract

The invention provides a cable which comprises at least one optical fiber (1), a fiber paste layer (2), a first protective layer (3), a hydrogen blocking layer (4) and a second protective layer (5), wherein the fiber paste layer (2), the first protective layer (3), the hydrogen blocking layer (4) and the second protective layer (5) are sequentially wrapped on the surface of the optical fiber (1) from inside to outside. The invention further provides a manufacture method of the cable. The method includes: sequentially forming the fiber paste layer (2), the first protective layer (3), the hydrogen blocking layer (4) and the second protective layer (5) on the surface of the optical fiber (1) from inside to outside. The cable has excellent hydrogen blocking performance and can meets the requirements of being used in severe environment under wells.

Description

Technical field [0001] The invention relates to an optical cable and a preparation method thereof. Background technique [0002] The optical cable is mainly composed of optical fiber, plastic protective sleeve and plastic outer sheath. In recent years, optical fiber technology has been widely used in many fields. With the development of optical fiber sensors in the exploitation and application of oil and natural gas, an optical cable that can withstand the same working conditions as the optical fiber sensor is required as the optical communication transmission medium between the downhole optical fiber sensor and the uphole tool. [0003] Because the downhole conditions are very harsh, such as high temperature, high pressure, vibration, corrosion, etc., the optical fiber is easily damaged and fails. More importantly, the hydrogen ions in the working environment can penetrate into the optical cable, which will increase the transmission loss of the optical fiber. Therefore, it is ne...

Claims

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Application Information

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IPC IPC(8): G02B6/44
Inventor 罗勇郭士生闫波付豪李三喜孙琪黄正宇
Owner CHINA NAT OFFSHORE OIL CORP
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