Using cross-hole seismic data to improve resolution of surface-seismic data

Improving the vertical resolution of surface-seismic data is always the difficulty and hotpot of seismic exploration. The paper presented a new method improving the resolution of surface-seismic data by cross-hole seismic data,which is to create the theoretical model of multi-scale geophysical information related the low-frequency surface-seismic data to high-frequency cross-hole seismic data based on linear system theory of seismic waves absorbed by strata,then,the system feature of seismic waves absorbed by strata was assessed by using system recognition technique and the restoration for high-frequency compensation was further implemented to surface-seismic data. Using the method to carry out processing of forward simulation data with different resolution in fine geologic models and practical cross-hole seismic data and surface-seismic data in Ken-71 well zone showed that the dominant frequency was raised by about 10Hz and advantage band was broadened by 10~20Hz on the basis that retains the main characteristic parameters of original surface-seismic data,achieving better optimized results of seismic data.