Abstract:In the exploration of lithologic hydrocarbon reservoirs,we usually use seismic high-resolution processing to extract thin-bed reflection information.Different deconvolution methods have different ways of wavelet extraction.The zero-phase wavelet can show accurate stratigraphic interface with the highest resolution.Therefore,the deconvolution based on zero-phase wavelet can better preserve the authenticity of geological body information,and to achieve the purpose of real characterization of unconformity and other geological bodies.This paper demontrates an examplle of data processing for a 3D seismic in the East Well Pencan 2 in the Junggar Basin.In order to improve the data resolution,different deconvolution methods are tested.In the identification of the contact between the bottom of Cretaceous Qingshui River formations and the lower Jurassic,we get two different imaging results.Based on seismic deposition process analysis and logging data validation,the contact relationship between the bottom of Cretaceous Qingshui River formations and the lower Jurassic is erosion,and pinchouts obtained with the zero phase-deconvolution provided by GeoEast System are reliable.
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