基于衰减补偿的多分量自适应聚焦束偏移

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摘要:将自适应聚焦束拓展到弹性介质中,基于弹性格林函数的构建,结合自适应聚焦束的优势,并考虑黏滞性对高斯束的影响,发展基于衰减补偿的多分量自适应聚焦束偏移方法。模型测试验证了本文方法的正确性和适应性。结果表明,新方法能够适应强横向速度变化,压制噪音对成像结果造成的影响,使成像剖面更加干净清晰。
关键词:高斯束; 偏移成像; 自适应聚焦束; 多分量; 衰减补偿; 弹性介质; 格林函数
中图分类号:P 631 文献标志码:A
引用格式:陈超,李振春,黄建平.基于衰减补偿的多分量自适应聚焦束偏移[J].中国石油大学学报(自然科学版),2024,48(4):80-91.
CHEN Chao, LI Zhenchun, HUANG Jianping. Multicomponent adaptive focused beam migration based on attenuation compensation[J].Journal of China University of Petroleum (Edition of Natural Science),2024,48(4):80-91.
Multicomponent adaptive focused beam migration based on
attenuation compensation
CHEN Chao1,2, LI Zhenchun1,2, HUANG Jianping1,2
(1.School of Geosciences in China University of Petroleum(East China), Qingdao 266580, China;
2.State Key Laboratory of Deep Oil and Gas, China University of Petroleum(East China), Qingdao 266580, China)
Abstract:This paper extends the adaptive focused beam technique to elastic media. By constructing elastic Greens function and incorporating the advantages of adaptive focused beams while accounting for the influence of viscosity on Gaussian beams, we develop a multi-component adaptive focused beam migration method based on attenuation compensation. Model tests verify the correctness and adaptability of this method, demonstrating its ability to handle strong lateral velocity variations, reduce noise impact on imaging results, and produce cleaner, clearer images.
Keywords: Gaussian beam; migration imaging; adaptive focused beam; multi component; attenuation compensation; elastic medium; Greens function
自适应聚焦束是在高斯束的基础上发展的,考虑了局部速度的变化,将高斯束的能量限制到一个波场内,避免了高斯束能量的扩散,有助于提高成像质量。(剩余9738字)