A processing method to improve the seismic resolution on expanding spread

In data processing of expanding spread, output frequency is normally affected by earth filtering and NMO stretching and decreases as offset increases,which makes high resolution of final data impossible. We presented a new data processing procedure based on surface consistent deconvolution to solve this problem.After conventional surface consistent deconvolution, data is sorted into common offset gathers and NMO applied, then a second surface consistent deconvolution is run on common offset gathers which eliminates offset related frequency decrease.We are studied the relevant processing steps and compared the data after conventional and novel processing.The positive result verified that this new processing method might raise data resolution and improve data quality effectively.