Abstract：The special variations of near-surface litholo-gy in land seismic exploration lead to significant special changes in shooting energy and shooting wavelets,and then result in seismic reflection at-tributes of final imaged reservoirs.These changes are much more large than the changes in reservoir information caused by geology and oil/gas factors,leading to a difficulty for reservoir identification.Former compensation for spherical dispersion and absorption,surface-consistent amplitude compensa-tion and surface-consistent deconvolution can elim-inate certain near-surface influence in some degree,but are difficult to effectively eliminate near-sur-face influence in three domains:time,frequency and space.For that reason,on the basis of original method of compensation for spherical dispersion and attenuation by absorption in time-frequency domain,the paper presented the method of"Com-pensation for spherical dispersion and absorption in time-frequency-space domain".The method has been proved by processing,interpretation and pro-duction drilling of 3D development seismic data in real oil field that the compensation method can meet the processing demand for relative reservation of amplitude information of reservoir,while elimi-nating influence of near-surface on seismic at-tributes.Therefore,the method is effective method for compensation for near-surface and ground at-tenuation by absorption.
