Abstract

The observation of microseismicity has raised the interest of the seismological and geoengineering communities in recent decades, and a significant effort has been spent to develop or improve methodologies to perform seismological analysis for weak sources at a local scale. Investing for the microseismic source attributes has gained increasing popularity in recent years as a way to understand the fracturing process. Accurate source location and excitation time can help us understand the development situation of underground checking. Moreover, the real microseismic magnitude can determine fracture amplitude and reflect the microseismic focal mechanism, so that we can achieve the correct evaluation of reservoir fracturing conditions. In this study, we develop a joint inversion approach for the microseismic source location, excitation time, and amplitude. Then, we demonstrate that our joint inversion method is a promising algorithm for microseismic source attributes in hydraulic fracturing monitoring. Using the synthetic and field data examples, we show that our microseismic joint inversion method can effectively locate the microseismic source positions and give the accurate excitation time and source amplitude at the same time.

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