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• W2754169345 abstract "Abstract Microseismic method is an essential technique for monitoring the dynamic status of hydraulic fracturing during the development of unconventional reservoirs. However, one of the challenges in microseismic monitoring is that those seismic signals generated from micro seismicity have extremely low amplitude. We develop a methodology to unveil the signals that are smeared in the strong ambient noise and thus facilitate a more accurate arrival-time picking that will ultimately improve the localization accuracy. In the proposed technique, we decompose the recorded data into several morphological multi-scale components. In order to unveil weak signal, we propose an orthogonalization operator which acts as a time-varying weighting in the morphological reconstruction. The orthogonalization operator is obtained using an inversion process. This orthogonalized morphological reconstruction can be interpreted as a projection of the higher-dimensional vector. We first test the proposed technique using a synthetic dataset. Then the proposed technique is applied to a field dataset recorded in a project in China, in which the signals induced from hydraulic fracturing are recorded by twelve three-component (3-C) geophones in a monitoring well. The result demonstrates that the orthogonalized morphological reconstruction can make the extremely weak microseismic signals detectable." @default.
• W2754169345 created "2017-09-25" @default.
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• W2754169345 date "2017-09-20" @default.
• W2754169345 modified "2023-09-27" @default.
• W2754169345 title "Unveiling the signals from extremely noisy microseismic data for high-resolution hydraulic fracturing monitoring" @default.
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• W2754169345 doi "https://doi.org/10.1038/s41598-017-09711-2" @default.
• W2754169345 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5607239" @default.
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• W2754169345 hasPublicationYear "2017" @default.
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