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Fibre Optic Sensing Cable
Fibre Optic Sensing Cable
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Special Sensing Fibre Optic Cable for Oil Industry
Special Sensing Fibre Optic Cable for Oil Industry is a type of sensing optical cable used for monitoring underground temperature and sound waves.The optical cable is composed of four layers of structure:outer seamless steel pipe, aluminum sheath,inner seamless steel pipe,and outer PP or HOPE sheath.The product has strong mechanical and sealing properties and is suitable for oil well sensing and monitoring applications below 300℃ .
Features
1.Three layer seamless tube protection ensures the mechanical strength and good sealing of the optical cable. 2.Accurate fibrelength control ensures that the sensing fibre is in a free state and is not affected by external forces
3.Seamless steel pipes are made of 316 stainless steel or nickel 825 material,which has good corrosion resistance strength
4.Seamless aluminum sheath has excellent hydrogen resistance and isolation performance
. 5.The square outer sheath is easy to fix and install in the well,and has a good buffering and protection effect on mechanical impact
Applications
. Special sensing optical cable foroll wells below 300℃
Parameters
Items
Parameters or Description
Fibre optic
Fibre type
Single mode/Multimode/Fibre grating array
Inner seamless steel pipe
Material
SUS 316L
External diameter
2.60
Aluminum tube
Material
Aluminium
External diameter
4.4mm
External seamless steel pipe
External diameter
6.35±0.05mm
Material
SUS 316L or Inconel 825
Thickness
0.89mm
Outer sheath
External diameter
11*11mm
Material
PP or HDPE
Maximum attenuation
Maximum
attenuation(20℃)
≤3.5dB/km@850nm; ≤1.5dB/km@1300nm
Mechanical properties
Long term working tension
Long term load ≥500ON
Short term work pull
Short term load≥1000ON
Working temperature
-55~300℃
Pressure resistance strength
≥70Mpa
Weight
Net weight of optical cable
Approximately 230kg/km
