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《Progress in Geophysics》 2013-05
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Multi-azimuth seismic data applied analysis on the exploration and development of Wenchang sag

ZHU Jiang-mei;LI Lie;YANG Wei;YUAN Quan-she;XIE Song-lei;LI Tian-cai;College of Geophysics,Chengdu University of Technology;CNOOC Energy Technology &Services-Geophysics Institute;CNOOC-Ltd.;Institute of Geology and Geophysics,The Chinese Academy of Sciences;  
Wenchang sag,located in the west part of PearlMouth basin,it is a very important hydrocarbongeneration area.But the main natural gas reservoir Zhuhai group is too deep,and its property is not ideal.The original old seismic data is low S/N and fault system is difficult to differentiate,affect the further evaluation of exploration targets.According to the geological features of Wenchang sag,through targeted acquisition illumination analysis,we designed more favorable 3Dacquisition geometry to collect new seismic data.Using different acquisition azimuth data,analyze the impact of fault imaging and fault shallow in different acquisition azimuth seismic data of Wenchang sag.Proposed that after geometry normalized,matched different azimuth seismic data,and combined these seismic data.At last,migrated the normalized and combined seismic data in CMP gather,and the new imaging results with better fault shadows suppression capability and higher fault identification capability.After the real seismic data analyzed,multi-azimuth seismic data combined imaging method can obtain a better fault imaging and better fault shadow suppress effect,and provide a reliable basis for later exploration and development.
【Fund】: 中海油能源发展科技项目“海上多方位角地震资料处理方法研究” 项目号:HFKJ-CJK1107;; 国家自然科学基金(40930421)和国家自然科学基金(40874009)联合资助
【CateGory Index】: P631.44
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