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《Natural Gas Geoscience》 2006-02
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THE APPLICATION OF 3D CONVERTED WAVE FIRSTBREAK REFRACTION STATIC IN THE SLG AREA

WANG Yu chao~1,2,NIU Bin hua~1,ZHANG Nian chun~2,3,MA long~2,3,WANG Jian hua~2(1.China University of Geosciences,Beijing 100083,China;2.Research Institute of Petroleum Exploration &Development Northwest(NWGI),PetroChina,Lanzhou 730020,China;3 ChengduUniversity of Technology,Chengdu 610059,China)  
Due to converted shear wave have lower velocity than P wave and the fluid in the medium have no action to converted shear wave.The near surface model for converted shear wave is different from that for P wave.The static of converted shear wave become more important and serious than P wave in converted shear wave seismic data processing.In this article,first,use firstbreak time of P wave to obtain the near surface model;second,pick the firstbreak time difference between P wave and converted shear wave by cross correlation;then,calculate the static of converted shear wave.We use the real 3D converted wave seismic data in the SLG area.As it shows in this paper,the problem of converted shear wave static is solved perfectly.We suggest that this method may be widely used in converted shear wave seismic data processing.
【CateGory Index】: P631.4
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