| 基于遗传算法的叠前地震波形反演构建虚拟井曲线 |
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| 引用本文： | 罗文造,杨绍国,王英民.基于遗传算法的叠前地震波形反演构建虚拟井曲线[J].南海地质研究,2006(1):121-128. |
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| 作者姓名： | 罗文造 杨绍国 王英民 |
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| 作者单位： | [1]广州海洋地质调查局,广州510760 [2]成都理工大学,成都610059 [3]中国石油大学北京,北京102200 |
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| 基金项目： | 国家“863”项目资助,编号：2003AA611010. |
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| 摘 要： | 叠前地震波形反演能够提供详细的地下地层特征，但由于其计算量大、数据和模型之间的非线性、目标函数的多极值和反演结果的多解性使叠前地震反演的实施成为一大难点。本文通过叠前和叠后混合反演技术采用遗传算法实现了深海无井地震反演。遗传算法思想简单、易于实现和使用、具有隐含并行性和全局搜索能力等优点，基于遗传算法的叠前地震波形反演得到了与井中实际数据基本吻合的速度和密度数据。
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| 关 键 词： | 叠前反演 遗传算法 虚拟井 |
The construction of pseudo-well logs by inversion of pre-stack seismic waveform based on genetic algorithm |
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| Authors: | Luo Wenzao Yang Shaoguo Wang Yingrnin |
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| Institution: | 1. Guangzhou Marine Geological Survey, Guangzhou, 510760 ; 2. Chengdu University Sciences and Technologies, Chengdu, 610059; 3. China Petroleum University, Beijing, 102200 |
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| Abstract: | The inversion of pre-stack seismic waveform is capable of providing the detailed character of subsurface stratigraphy. But its large scale of calculation, the non-linear relationship between data and model, multi-pole of objective functions and its multi-resolution has resulted in the difficulty of its operation. The seismic inversion without well constrained in the deep sea has been realized by hybrid inversion of pre-and post-inversion. The genetic algorithm is simple, easy to realizing and using with the character of latent paralleling and global searching capability. The inversion of pre-stack seismic waveform based on genetic algorithm gives the velocity and density which consists basically with those from the wells. |
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| Keywords: | Pre-stack inversion Genetic algorithm Pseudo-well |
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