发明名称 |
ATTENUATION CORRECTION FOR DISTRIBUTED TEMPERATURE SENSORS USING ANTISTOKES TO RAYLEIGH RATIO |
摘要 |
A distributed temperature sensor, a method of determining temperature, and a processing system to compute temperature are described. The sensor includes an optical fiber disposed in an area where temperature is to be measured, a primary light source to inject light into the optical fiber, and a secondary light source to inject light into the optical fiber. The sensor additionally includes a photodetector to detect backscatter light energy from the optical fiber the backscatter light energy including Stokes Raman scatter or anti-Stokes Raman scatter and primary Rayleigh scatter resulting from the primary light source and secondary Rayleigh scatter resulting from the secondary light source, and a processor to determine temperature based on a ratio of the Stokes Raman scatter or the anti-Stokes Raman scatter and a combination of the primary Rayleigh scatter and the secondary Rayleigh scatter. |
申请公布号 |
EP3134615(A1) |
申请公布日期 |
2017.03.01 |
申请号 |
EP20150783518 |
申请日期 |
2015.03.19 |
申请人 |
Baker Hughes Incorporated |
发明人 |
MITCHELL, Ian;JOHNSTON, William;CHANDRAN, Ashwin |
分类号 |
E21B47/07;E21B47/12;G01V9/00 |
主分类号 |
E21B47/07 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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