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《Applied Geophysics》 2006-02
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Use of low-frequency signals to improve imaging quality under high-velocity basalt

She Deping1,2, Guan Luping2, Xu Ying2, and Li Pei21. Civil Engineering Department, Hehai University, Nanjing 210098, China. 2. Nanjing Institute of Geophysical Prospecting of Sinopec Petroleum Exploration & Development Research Institute, Nanjing 210014, China)  
Wave equation wave field numerical modeling technology is applied to the observation that deep layer imaging is difficult below a screening layer of high-velocity basalt. Three simple high-velocity basalt models are designed on the basis of basalt formation characteristics. The analysis of deep-layer reflection seismic signal energy shows that low- frequency seismic signals are capable of both penetrating the thin high-velocity basalt layer and reducing the diffraction noise caused by the rough surfaces. The simulation experiment of a complete 2D basalt model confirms that the low-frequency signals can be used to boost the quality of deep-layer imaging under the high-velocity basalt layer and achieve good results in low-pass filter processing of actual data.
【CateGory Index】: P631.8
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【References】
Chinese Journal Full-text Database 1 Hits
1 Hou Cheng-fu Gao Shu-qin Jiang Lian-bin Department of International Exploration,BGP,No.307,Fanyang Dong Road,Zhuozhou City,Hebei Province,072751,China;Technology of streamer seismic data acquisition in basalt-overlaid area,Red Sea[J];Oil Geophysical Prospecting;2008-03
【Secondary References】
Chinese Journal Full-text Database 1 Hits
1 CHEN Jie,WEN Ning,LUO Wen-zao,GUAN Xiao-chun,WANG Li-ning,WANG Gong-xiang(Guangzhou Marine Geological Survey,Guangzhou 510760,China);Several ideas on deep water oil and gas comprehensive geophysical data acquisition from marine experiments[J];Progress in Geophysics;2009-01
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