摘要
针对目前广泛使用的电子式油气井下压力温度测量系统可靠性低、高温环境漂移大的不足 ,设计了一种基于非本征型F P干涉仪 (EFPI)和光纤布喇格光栅 (FBG)的复合型油气井下压力、温度测量系统 ,详细说明了其工作原理、传感器组成和信号解调方法 ,初步试验结果表明 ,该测量系统不仅克服了电子测量方式的不足 ,而且具有复用性好。
To overcome the long-term unstability and large shift of the electrical temperature and pressure sensing system used in the oil and gas down-hole at present, a fiber-optic compound system based on EFPI and FBG for this measurement is designed, its working principle, components and signal dividing and demodulating methods are also proposed in detail. The primary testing results show that the aforementioned drawbacks of the electrical sensing systems has been overcome by this novel fiber-optic sensing system , and it also owns many merits such as easily to be multiplexed, high accuracy, good linearity and so on.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2003年第7期864-867,共4页
Acta Photonica Sinica
基金
国家自然科学基金资助课题 (6 0 1770 2 8)
关键词
油气井
非本征型F-P干涉仪
光纤光栅
温度压力传感器
Oil/gas down-hole
Extrinsic Febry-Perot interferometer
Fiber Bragg grating
Temperature and pressure sensor
