Is fiber optic temperature measurement easy to install?

Optical fiber temperature measurement is the essential measurement parameter during the production process. Accurate downhole temperature measurement plays an important role in geological oil well monitoring. Especially in the thermal recovery process of heavy oil, it is necessary to monitor the downhole temperature changes.

　　In the traditional well temperature measurement process, the point-type optical fiber temperature measurement system uses infrared thermometers, infrared thermal imagers, temperature sensor arrays and other equipment. However, due to the great impact of the downhole environment on the test instruments, it is easy to cause testing Errors, and there are many deficiencies in the measurement of the temperature field. The distributed optical fiber temperature sensing system has the advantages of many measurement points, high precision, lightness and can withstand the harsh environment of the underground, etc. It can obtain the temperature field information of the entire optical fiber distribution area. At present, the distributed optical fiber temperature sensing system has realized the measurement of downhole temperature field and other parameters. The measurement of the temperature field in the thermal recovery process of heavy oil has broad application prospects.

　　Distributed optical fiber temperature sensing system technology principle: Distributed optical fiber temperature system DTS is based on optical fiber Raman scattering phenomenon. The light pulse emitted by the laser light source interacts with the fiber molecules and is scattered. There are many types of scattered light, such as: Rayleigh scattering, Brillouin scattering and Raman scattering, etc.; where Raman scattering is an optical fiber The thermal vibrations of the molecules are related, so the temperature can be used to make temperature measurements. Point-type optical fiber temperature measurement system In the optical fiber, the scattered signal is continuous. By using the high-speed signal acquisition technology to measure the time interval between the incident light and the Raman scattered light, the position where the Raman scattered light occurs can be determined. For temperature, so you can measure the corresponding temperature distribution along the fiber.