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《Geophysical Prospecting for Petroleum》 2011-04
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One modified ray-path elastic impedance and elastic parameter inversion

Wang Xuben Liu Lihui,Chengdu University of Technology,Chengdu 610059,China  
During the direct computation of v_P/v_S by ray-path elastic impedance, the analytic expression is high-power function consisted of the ratio of two elastic impedance,which has poor stability and antinoise ability,so it is limited for application.Therefore,one modified ray-path elastic impedance need to be developed to make the computation of elastic parameters more stable.Through using binomial theorem quadratic to the ray-path elastic impedance formula,the ray-path elastic impedance was expressed into a function of P-wave impedance and S-wave impedance.By experimental analysis and error derivation,analytical formula of P-wave impendence,S-wave impendence and other elastic parameters were given.The application in some offshore area obtained good results.
【CateGory Index】: P631.4
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