| A New Inversion Method of Sedimentary Strata For Deriving Double Parameters and Its Applications |
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| 作者姓名： | GUO Hua LIU Cai LI Yue and YANG Baojun |
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| 作者单位： | College of Geo-exploration Science and Technology，Jilin University，Changchun 130026，P.R.China |
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| 摘 要： | 1 ＩｎｔｒｏｄｕｃｔｉｏｎＷｉｔｈｔｈｅｄｅｖｅｌｏｐｍｅｎｔｏｆｃｏｍｐｕｔｉｎｇｔｅｃｈｎｉｑｕｅｓｔｈｅｒｅｓｅａｒｃｈｏｆｉｎｖｅｒｓｅｐｒｏｂｌｅｍｓｈａｓｅｘｔｅｎｓｉｖｅｌｙｂｅｅｎｕｓｅｄｉｎｍａｎｙｓｃｉｅｎｔｉｆｉｃｆｉｅｌｄｓ .Ｔｈ
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A New Inversion Method of Sedimentary Strata For Deriving Double Parameters and Its Applications |
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| GUO Hua,LIU Cai,LI Yue and YANG Baojun.A New Inversion Method of Sedimentary Strata For Deriving Double Parameters and Its Applications[J].Journal of Geoscientific Research in Northeast Asia,2002(2). |
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| Authors: | GUO Hua LIU Cai LI Yue and YANG Baojun |
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| Abstract: | The inverse problem of wave equation is the importance of study not only in seismic prospecting but also in applied mathematics. With the development of the research, the inverse methods of 1D wave equations have been trending towards the multiple parameters inversion .We have obtained an inverse method with double-parameter, in which medium density and wave velocity can be derived simultaneously. In this paper, to increase the inverse accuracy, the method is improved as follows. Firstly, the formula in which the Green Function is omitted are derived and used. Secondly, the regularizing method is reasonable used by choosing the stable function. With the new method, we may derive elastic parameter and medium density or medium density and wave velocity. Thus, lithology parameters for seismic prospecting may be obtained. After comparing the derived values from the new method with that from previous method, we obtain the new method through which substantially improve the derived accuracy .The new method has been applied to real depths inversion for sedimentary strata and volcanic rock strata in Chaoyanggou Terrace of Songliao Basin in eastern China. According to the inverse results, the gas-bearing beds are determined. |
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| Keywords: | Sedimentary strata Double-Parameter inversion Green function Regularization method Fredholm integral equation of the first kind Volcanic rock strata |
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