Abstract：After the hydrocarbon discovery in Well T6 in Tiancao Sag,a wide-azimuth,broadband,and high density (WBH) 3D seismic survey was conducted.In order to evaluate reservoir characteristics and reserve potential in the area,an integrated 3D processing and interpretation workflow based on GeoEast System is carried out.For data processing,main techniques including comprehensive static corrections,combined denoising,amplitude compensation and deconvolution,and prestack time migration are adopted to improve seismic signal-to-noise ratio (SNR) and resolution.Structural interpretation and reservoir prediction techniques are used to depict structures and sedimentary facies belts.Based on this,a favorable area of 82.3km2 is predicted.And four drilled wells proposed based on our comprehensive evaluation obtain commercial oil flow,which shows remarkable success of our work.
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