封闭结构模型建立方法
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摘要
在地震勘探中 ,模型正演技术广泛应用于地震资料的采集、处理和解释的各个环节 ,模型正演技术的基础是建立正演地质模型。本文提出封闭结构建模方法 ,以具有相同速度、密度属性的介质为单元 ,由包围它的界面组成封闭结构 ,彼此相连的封闭单元构建成具有封闭结构特性的地质模型。封闭结构模型同层状结构模型相比 ,最大优点是可以有效地描述任意复杂的地下地质结构。本文首先介绍了层结构模型的特点 ,然后描述了二维和三维封闭结构模型的拓扑关系 ,并给出了相关的数学处理方法
The forward modeling technology is widely used in each link in seismic exploration chain:data acquisition,processing and interpretation. The basis of forward modeling technology is building the forward geologic model The method presented by the paper is to take medium with same velocity and same density as an unit to build a closed structure out of its surrounding interface, and those closed units connecting each other to built a geologic model with the feature of closed structure. The model of a closed structure,compared with a model of a layered structure,the maximum advantage is that it can effectively describe any complicated underground geologic structrue.First,the paper introduced the feature of layered model,then described the topologic relation between 2 D and 3 D closed model and finally presented relevant mathematic processing method.
The forward modeling technology is widely used in each link in seismic exploration chain:data acquisition,processing and interpretation. The basis of forward modeling technology is building the forward geologic model The method presented by the paper is to take medium with same velocity and same density as an unit to build a closed structure out of its surrounding interface, and those closed units connecting each other to built a geologic model with the feature of closed structure. The model of a closed structure,compared with a model of a layered structure,the maximum advantage is that it can effectively describe any complicated underground geologic structrue.First,the paper introduced the feature of layered model,then described the topologic relation between 2 D and 3 D closed model and finally presented relevant mathematic processing method.
引文
[1] 徐果明,卫山,高尔根,林庆忠,蒋先艺,罗开云.二维复杂介质的块状建模及射线追踪.石油地球物理勘探,2001,26(2):213～218
[2] 杨长春,冷传波,李幼铭.适于复杂地质模型的三维射线追踪方法.地球物理学报,1997,40(3):414～420
[3] NicolasE etal.A new tool to seal a3D earth model:acut with constraints.SEG ExpandedAbstracts,1998
[2] 杨长春,冷传波,李幼铭.适于复杂地质模型的三维射线追踪方法.地球物理学报,1997,40(3):414～420
[3] NicolasE etal.A new tool to seal a3D earth model:acut with constraints.SEG ExpandedAbstracts,1998
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