Microseismic Monitoring Technology Research And Application Of Horizontal Well Fracturing

Microseismic monitoring horizontal well technology has become one of the important technology of domestic at present the development of low permeable oil fields,Microseismic monitoring horizontal well technology for horizontal Wells in the oilfield development network optimization, improve the recovery factor is of great significance.This paper studies fracturing model and gas reservoir percolation model,Volcanic rock and gravel seepage characteristics of different stages and the factors affecting capacity,Analysis of perforating parameters are summarized and wellbore azimuth parameters on the fracture crack pressure influence law.Borehole micro seismic random noise suppression is the key to deal with problems.According to the borehole micro seismic acquisition methods and the characteristics of micro seismic events,Pretreatment of micro seismic record,Using the noise energy ratio method,Improve the signal-to-noise ratio of micro seismic record detector azimuthal orientation,Calculate each detector position and Angle For micro seismic signal amplitude and the amplitude processing within the tao and Hilbert transform To enhance the effective signal energy.Butterworth filtering and Hankel matrices filtering method is used,Filter out noise improve signal-to-noise ratio micro seismic record.Micro seismic signal with the conventional seismic signal representation is roughly same,Usually in amplitude and phase.By receiving signal available and the size of the signal amplitude characteristics,With the difference between them as the objective function.Building as the objective function and the direction of the objective function,Accurate source inversion.Extracted from the forward modeling data inversion to locate the required information,Application of Newton iterative method and secant method for solving equations of micro seismic inversion.Get in the process of fracturing fracture parameters such as height,length, precision is more accurate,Through these information more accurately depict fracture distribution in spatial domain.