Imaging study of complex faulted block groups in northern slope of Biyang sag

The northern slope area of Biyang sag is one of the key exploratory blocks of Henan oilfield,with the characteristics of complex structure and developed faults.At the request of high accuracy of exploration,the denoising method of data reconstruction in multi - domains has been adopted to suppress interference,and the tomographic inversion of static ccorreclion can solve the problem caused by the complicated surface conditions.Based on the dual spectrum velocity analysis of anisotropy,the accuracy of imaging technology of this area can be further enhanced.Through processing parameters analysis of imaging effect,such as migration aperture, aliasing parameters,and etc.the optimal migration processing parameter has been determined.In the end,by using integral migration method,the prestack imaging process of this area has been conducted and the final results indicate the newly processed section is improved on the aspects of signal to noise ratio and seismic lateral resolution.