Abstract:At present, common injection profile monitoring methods in oilfields have the disadvantages of long construction cycles, poor well condition adaptability, and pollution. In order to find a new method for monitoring the injection profile, a distributed optical fiber temperature sensing system (DTS) was used to monitor the change in well temperature during the water injection process, and the injection amount of each layer was qualitatively analyzed by the slope of the well temperature change. The distributed acoustic wave sensing system (DAS) is used to monitor the vibration of the well during the water injection process. According to the vibration energy analysis, the precise position of each water distributor is located, and the injection volume is estimated. According to the test results, the DTS and DAS systems can be used for rapid monitoring and estimation of the injection profile, which helps the oilfield side to grasp the injection profile situation in a more real-time and accurate manner.