Study And Application Of Microseismic Monitoring Technology In Staged Fracturing Of Tight Oil Horizontal Well

At present,microseismic monitoring technology has been widely used in the fracture technology of unconventional petroleum reservoir.Xinjiang Oilfield Company conducted a microseismic monitoring of the fractured horizontal wells in the pilot test area of the Jimsar Depression in Changji Oilfield.The utilization rate of the monitoring data is low,and the understanding of the effect of the reservoir reconstruction needs to be further improved.In this paper,the basic design and processing methods of microseismic monitoring technology in horizontal well fracture monitoring are summarized by studying the principle and basic flow of microseismic monitoring technology.By analyzing and processing the results of microseismic monitoring,the effect of reservoir reconstruction in 7 fractured horizontal wells and the rationality of fracturing design and tech has been evaluated.Through the SPSS data mining software,the paper has carried on the correlation study and statistical analysis to the data of fracturing construction data and microseismic monitoring,and the correlation between construction pressure,total sand volume,total liquid volume and reservoir reconstruction volume has been obtained.A multivariate linear regression model between fracturing parameters and reservoir reconstruction volume is established,and the law of the fracture propagation in the natural fracture development zone and the non-development zone is obtained.The results of this study show that the microseismic monitoring technology can obtain the spatial distribution and geometric characteristics of underground fracturing fractures in the fracturing construction of tight oil horizontal wells,and evaluate the volume of reservoir reconstruction by fracturing.in a certain range,the reservoir reconstruction volume increases with the scale of fracturing increases in the natural fracture non-development zone.In the natural fracture development zone,the volume of the reservoir reconstruction is affected by the natural fractures and the fracturing scale,and there is no obvious linear relationship.