Abstract：A super-large 3D seismic converted-wave dataset in the LNS area,Western China has low signal-to-noise ratio (SNR) and serious statics,which obstruct the prediction of ultra-deep carbonate reservoirs.To overcome this problem,a strategy of converted-wave static corrections is proposed.First P-wave shot-point statics are used for converted-wave shot-point statics.For converted-wave receiver point statics,initial receiver point statics are obtained by the proportional coefficient method.Then short-wavelength statics are obtained by the surface-consistency residual static corrections.And at last the trend surface based on common-receiver-point stacks is adopted,so residual converted-wave statics are eliminated.Our converted-wave seismic data processing results show that the proposed strategy greatly improves the imaging quality of converted-wave data,and lays a good foundation for subsequent seismic interpretation and reservoir prediction.
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