油井下用光纤温度压力传感器  

Optical fiber temperature and pressure sensor in an oil well

作　　者：赵庆超[1] 郭士生 李舜水 刘嘉[1] 

机构地区：[1]山东省科学院激光研究所,山东济南250014 [2]中海石油(中国)有限公司上海分公司,上海200030

出　　处：《山东科学》2014年第4期57-61,67,共6页Shandong Science

基　　金：山东省自主创新成果转化重大专项(2011ZHZX1A0107);山东省信息产业发展专项资金项目

摘　　要：研制了一种基于光纤F-P腔与光纤Bragg光栅的温度压力传感器,用于监测油井下的压力和温度.该传感器通过F-P腔腔长的变化监测油井下压力,通过光纤Bragg光栅反射波长的变化监测油井下温度.传感器测压范围0～69 MPa,实验测试和标定结果表明,传感器的压力响应与F-P腔腔长呈良好线性关系,线性拟合度为0.999 999;传感器测温范围5～ 175℃,温度精度±1℃.实际应用证明,该传感器可实时在线监测井下压力和温度状况,运行正常.We developed a temperature and pressure sensor based on optical F-P cavity and optical Bragg grating,which was used to monitor temperature and pressure in an oil well.It detected pressure by F-P cavity length variation and temperature by the change of optical Bragg grating reflection wavelength.Pressure measuring range is 0 ～ 69 MPa.Test and calibration results demonstrate that a better linear relationship exists between F-P cavity length and pressure response,linear fitting degree of 0.999 999.Temperature measuring range is 5 ～ 175 ℃,precision of ± 1 ℃.Practical applications prove that the sensor can monitor real-time pressure and temperature in an oil well and is reliable.

关 键 词：油井 温度 压力 F-P腔 光纤BRAGG光栅 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]