摘要
根据油田高温油井测试的需求,设计分布式高温单模光纤传感器和检测设备,叙述该高温光纤传感现场安装过程,并给出油井温度测试的2维数据,构建3维温度场,由于拉曼后向散射信号微弱和测试温度信号噪声干扰严重,采用小波多分辨分析与重构方法进行测试信号去噪处理。通过现场测试应用,分布式光纤传感技术可在石化、冶金、电力等一些行业的高温、高压以及强烈的冲击与振动的环境中使用。
According to the demand of high temperature test of oil well in oil field,single mode distributed optical fiber temperature sensor and measuring device including system performance parameters were designed.How to install high temperature optical fiber and how to measure in oil well were explained in detail.High temperature measurement data of oil well were shown from 2-dimension curve to 3-dimension plot.Because the Raman back scattering signal was weak and temperature data were heavily interfered by noise,used wavelet analysis and reconstruction method to denoise temperature measurement signal.The test results prove that distributed optical fiber high temperature sensor can be used in high temperature,high pressure（up to 35MPa） and strong interference environment in the fields of petrochemical industry,metallurgical industry and electric power industry,etc.
出处
《化工自动化及仪表》
CAS
2007年第5期54-56,61,共4页
Control and Instruments in Chemical Industry
基金
中国博士后基金资助项目(20060391001)
山东省中青年科学家奖励基金项目(2006BS05007)
关键词
分布式光纤
温度传感
小波分析
去噪
distributed optical fiber
temperature sensor
wavelet analysis
denoise
