| 基于波动方程的地震波衰减理论研究及应用 |
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| 引用本文： | 尹陈,贺振华,黄德济.基于波动方程的地震波衰减理论研究及应用[J].成都理工大学学报(自然科学版),2008,35(3):263-267. |
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| 作者姓名： | 尹陈 贺振华 黄德济 |
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| 作者单位： | 成都理工大学"油气藏地质及开发工程"国家重点实验室,成都,610059 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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国家自然科学基金 |
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| 摘 要： | 地震波在传播过程中的能量衰减特征表现为:一方面为球面扩散,另一方面是由于地层合流体而引起的衰减,它直接和地层的岩性、合流体性密切相关.由于合流体岩石存在的内摩擦性及粘滞性,使得地震波在传播过程中能量得到衰减,且高频能量衰减强,低频能量衰减弱,从而成为形成低频阴影现象的重要原因.作者在基于波动方程正演的基础上,从岩石的内摩擦性和粘滞性出发,模拟地震波穿过合流体地层时的频率能量变化特征,解释由于含流体地层的吸收衰减而导致的低频阴影现象,并在实际处理中得以应用.
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| 关 键 词： | 品质因子 低频阴影 粘滞性 内摩擦性 |
Research and application of the attenuation theory for seismic wave based on the wave equation |
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| YIN Chen,HE Zhen-hua,HUANG De-ji.Research and application of the attenuation theory for seismic wave based on the wave equation[J].Journal of Chengdu University of Technology: Sci & Technol Ed,2008,35(3):263-267. |
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| Authors: | YIN Chen HE Zhen-hua HUANG De-ji |
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| Institution: | YIN Chen,HE Zhen-hua,HUANG De-jiState Key Laboratory of Oil , Gas Reservoir Geology , Exploitation,Chengdu University of Technology,Chengdu 610059,China |
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| Abstract: | There are two sides of the energy attenuation for the seismic along with the propagation in the medium.One is the sphere spread,and the other is the attenuation caused by the liquid in the rock,and it has a close relation with the lithology character and the liquid.The diffusivity and viscosity in the rock saturated with the liquid make the seismic energy attenuate when the seismic wave propagates in the rock.Further more,the energy of high frequency attenuates faster and more,in reverse,the energy of the l... |
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| Keywords: | quality factor low-frequency shadow viscosity diffusivity |
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