Surface Microseismic Monitoring in Complex Geological Structure of Gas Shale Reservoir--A case of No

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  Through to processing and interpretation of microseismic records for the shale gas reservoir hydrofracturing,the fracture trend,spatial distribution and other geometric features(crack length,width and height)are be counted.Organic-rich shale is widely developed in Lujiaping group of under Cambrian in Northeast Chongqing.However,the region has suffered to the shallow metamorphism of regional dynamic,interlayer fold development with the large inclination,widely exposed limestone and the steep elevation difference.It takes more difficulties to surface micro-seismic acquisition,processing and interpretation.A combination observation system of surface microseismic monitoring is aim at the complicated geologic structure,the noise reduction method based on wavelet transform is used to noise suppression for raw data,which contributes to improve the SNR of raw data and achieve accurate event location.
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