| 波在PTL介质中传播的旅行时反演 |
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| 引用本文： | 朱衍镛.波在PTL介质中传播的旅行时反演[J].石油地球物理勘探,1991(3). |
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| 作者姓名： | 朱衍镛 |
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| 作者单位： | 石油地球物理勘探局研究院 |
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| 摘 要： | 本文对Byun(1990)的横向各向同性介质的旅行时反演方法作了两点改进:其一是根据优化后的V_r值计算一个初始的F值,然后再根据这个初始值进行最小均方误差分析;其二是对初始值进行优化分析时,提出用测量值(或由式(4)和式(10)计算的理论值)作为实际值进行拟合,而Byun的方法是用式(11)的计算来得到一个实际值。理论模型证明:本文所述方法有一个比较宽的适应性,而Byun方法只在弱各向异性时才可以得到较精确的结果。
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| 关 键 词： | 各向异性介质 旅行时反演 |
Travel time inversion of seismic wave in PTL medium, |
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| Zhu Yanyong Geophysical Research Institute,Bureau of Oil Geophysical Prospecting,Zhuozhou City,Hebei Province,China,Internal Postcode:.Travel time inversion of seismic wave in PTL medium,[J].Oil Geophysical Prospecting,1991(3). |
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| Authors: | Zhu Yanyong Geophysical Research Institute Bureau of Oil Geophysical Prospecting Zhuozhou City Hebei Province China Internal Postcode: |
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| Affiliation: | Zhu Yanyong Geophysical Research Institute,Bureau of Oil Geophysical Prospecting,Zhuozhou City,Hebei Province,China,Internal Postcode: 072751 |
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| Abstract: | The article improves Byun's inversion of seismic travel time in transversely isotropic medium in two aspects. First, an initial value is calculated from optimal value (V_r), then used to make least mean square error analysis. Second, in making optimization analysis of the initial value, measure values (or theoretical values calculated using formulas(4)and(10))are used as real values for fitting, while Byun's method calculates real value from formula (11). Theoretical modeling shows that this method has quite good adaptability, whereas only in the case of weak anisotropic medium, can Byun's method bring quite accurate result. |
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| Keywords: | Subject heading anisotropic medium travel time inversion |
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