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Processing microseismic data to form composite microseismic data to inform about a hydraulic fracturing process
Processing microseismic data to form composite microseismic data to inform about a hydraulic fracturing process
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机译：处理微地震数据以形成复合微地震数据以告知水力压裂过程
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摘要
The method includes identifying 130 a plurality of subsets of the microseismic data, wherein each subset of the microseismic data corresponds, respectively, to a microseismic event occurring underground at a known source location. The method also includes, for each combination of source location and receiver: determining 150 a travel-time adjustment based on a spatial relationship between the source location and the receiver; and applying 160 the travel-time adjustment to a waveform in a subset of the microseismic data that corresponds to the combination of source location and receiver. The method also includes combining 170 the adjusted subsets of microseismic data to form composite microseismic data. The composite microseismic data may have a higher signal to noise ratio compared with the individual subsets of microseismic data, and may be useful in determining a model that describes one or more properties relating to the propagation of elastic waves from at least one source location to a plurality of receivers, e.g. a static model or total travel-time model.
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