Abstract：Artificial fracturing in tight sandstone reservoir with faults and natural fractures can improve the internal diversion ability of reservoir and increase oil and gas production. However complex anisotropy in reservoir makes it difficult to predict artificial fracturing shape in advance. Microseismic monotoring can obtain the distribution of microseismic events and their attribute characteristics which can be used to accurately evaluate fracturing effects. This paper presents a tight sandstone microseismic monitoring project. Based on the analysis of microseismic events and their locations, the characteristics of microseismic events and source attributes caused by hydraulic fracturing are identified and the reason of large water production after reservoir stimulation is found.
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