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《Journal of Chengdu University of Technology(Science & Technology Edition)》 2010-06
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Research and application of multi-wavelet decomposition and reconstructing technology

XU Tian-ji1,2,SHEN Zhong-min1,WEN Xue-kang31.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu 610059,China;2.Deyang Branch Institute,Exploration & Production Research Institute of Southwest Branch Co.,SINOPEC,Deyang 618000,China;3.Engineering Supervision Center of Southwest Branch Co.,SINOPEC,Deyang 618000,China  
To study the multi-wavelet decomposition and reconstructing technology of seismic data can provide some important supports for predicting the oil-gas reservoir.When the seismic data are decomposed,by the arithmetic of matching pursuit,the wavelet dictionary will be established by a series of Morlet wavelet functions with various frequencies.When the seismic data are reconstructed,according to the requirement of oil-gas response and geology phenomena,the dictionary will be filtered and optimized firstly,and then,the Morlet wavelet functions will be linearly summed by the frequency attribute.The process of decomposing and reconstructing seismic data can combine the time field with the time-frequency field seismic data to interpret and overcome the cognition localization of geology phenomena and oil-gas response character in the single field.The technologies have been used to predict the reservoir and identify the gas and achieved good effects because the predictions are consistent with well loggings.
【Fund】: 国家科技重大专项(2008ZX05002-004-003);; 中国石化科研项目(P09076)
【CateGory Index】: TE132.14
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