Simultaneous enhancement and detection of microseismic events based on autocorrelation

Feng, L., Gui, Z.X., Chen, Z., Liu, Y.H. and Wei, Q., 2023. Simultaneous enhancement and detection of microseismic events based on autocorrelation. Journal of Seismic Exploration, 32: 337-356. Microseismic monitoring is the main method of hydraulic fracturing evaluation, which is realized by locating the source. Before locating the source, it is necessary to determine the position of the valid signal in the receiving channel. But the data received is very complicated, including the dead trace, strong noise, invalid data, etc. In order to solve some cases, Methods of data enhancement and data detection are mentioned. However, there are some problems in the application of the enhancement method and detection method in microseismic monitoring. Therefore, This research improves the enhancement method to reduce the suppression of the P-wave by the original method and proposes a more efficient detection method based on autocorrelation. The test of synthetic data and filed microseismic data shows that the enhancement method improved and the detection method is effective.
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