Abstract：The Structure Nanpu 1 is located in the southwest slope of Nanpu Sag,and it is a buried-hill drape-anticline structure,which is an important oil and gas distribution zone in Jidong Oilfield.Due to two sets of igneous rocks developed in middle and deep layers,seismic data is characterized by low energy,low signal-to-noise ratio (SNR),and strong multiples.So robust amplitude-preserving processing strategies are used to improve seismic data quality.First,near-surface Q compensation is used to compensate amplitude and frequency loss caused by near-surface absorption.Then OBC dual-sensor seismic data merging is used to remove ghost waves.After that,low SNR data is processed by the surface-consistent robust deconvolution.Finally,high resolution Radon transform is used to suppress multiples caused by two sets of igneous rocks.The disadvantage of conventional processing is overcome by the proposed strategies and seismic image quality is greatly improved.Higher resolution and high SNR data provides a good basis for the oil and gas exploration in the Structure Nanpu 1.
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