A research based on the temperature field of high precision temperature measuring method of ROTDR

According to the traditional measuring method of oil well temperature deficiency, the temperature measurement solutions based on Raman scattering principle is proposed, the oil wells temperature monitoring system based on the distributed optical fiber sensor is built, and analyzing and testing its feasibility. On the basis of promoting test system hardware index and improving demodulation algorithm,deeply studied the spatial resolution closely related to accuracy and temperature measuring accuracy, proposed a calibration method of improving the distributed optical fiber temperature sensor temperature measurement precision. The experiment showed that, this method can effectively achieve the temperature of the more distributed real-time fast measure on temperature field of the original distribution, good temperature measurement stability, high precision.