基于衰減補償?shù)亩喾至孔赃m應(yīng)聚焦束偏移
摘要:將自適應(yīng)聚焦束拓展到彈性介質(zhì)中,基于彈性格林函數(shù)的構(gòu)建,結(jié)合自適應(yīng)聚焦束的優(yōu)勢,并考慮黏滯性對高斯束的影響,發(fā)展基于衰減補償?shù)亩喾至孔赃m應(yīng)聚焦束偏移方法。模型測試驗證了本文方法的正確性和適應(yīng)性。結(jié)果表明,新方法能夠適應(yīng)強橫向速度變化,壓制噪音對成像結(jié)果造成的影響,使成像剖面更加干凈清晰。
關(guān)鍵詞:高斯束; 偏移成像; 自適應(yīng)聚焦束; 多分量; 衰減補償; 彈性介質(zhì); 格林函數(shù)
中圖分類號:P 631 文獻(xiàn)標(biāo)志碼:A
引用格式:陳超,李振春,黃建平.基于衰減補償?shù)亩喾至孔赃m應(yīng)聚焦束偏移[J].中國石油大學(xué)學(xué)報(自然科學(xué)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
自適應(yīng)聚焦束是在高斯束的基礎(chǔ)上發(fā)展的,考慮了局部速度的變化,將高斯束的能量限制到一個波場內(nèi),避免了高斯束能量的擴(kuò)散,有助于提高成像質(zhì)量。(剩余9738字)
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- 中國石油大學(xué)學(xué)報(自然科學(xué)版)
- 2024年04期
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