Abstract：We discuss in this paper the vertical resolution of broadband,wide-azimuth and high-density (BWH) seismic data acquired in 2015 in Pubei Oilfield,Tuha Basin.With synthetic seismogram,filtering in an octave,and inversion,it is found that different-band reflections present different resolutions of strata interface in different scales.Lower-frequency seismic data resolution can identify large-scale interfaces,and high-frequency seismic data resolution can identify both large-scale and small-scale interfaces.When seismic data lasts low-frequency information,fewer interfaces could be identified.Low frequency of seismic data determines seismic inversion accuracy,and high frequency of seismic data decides seismic inversion resolution.Reservoir prediction based on BWH seismic data is significantly improved by broadband seismic inversion,and effectively guided lithologic reservoirs exploration in Tuha Basin.
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