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地球科学进展  2014, Vol. 29 Issue (10): 1138-1148    DOI: 10.11867/j.issn.1001-8166.2014.10.1138
综述与评述     
近地表速度建模研究现状及发展趋势
王振宇1, 2, 杨勤勇1, 李振春2, 胡光辉1, 尹力1, 2, 王杰1
1.中国石油化工股份有限公司石油物探技术研究院,江苏 南京 211103; 2.中国石油大学(华东)地球科学与技术学院,山东 青岛 266580
Research Status and Development Trend of Near-Surface Velocity Modeling
Wang Zhenyu1, 2, Yang Qinyong1, Li Zhenchun2, Hu Guanghui1, Yin Li1, 2, Wang Jie1
1.Sinopec Geophysical Research Institute, Nanjing 211103, China; 2.School of Geosciences, China University of Petroleum, Qingdao 266580, China
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摘要:

速度是反映地下构造和岩石物性的一个重要参数。近地表速度的精度直接影响勘探区域的地震资料静校正、速度分析以及最终成像的效果。目前常用的近地表建模方法和技术多基于高频近似的射线理论,不能满足当前近地表精细建模的需求。通过对微测井、折射波法、面波法、走时层析以及全波形反演等近地表建模技术的全面调研,总结了它们的适应性、优缺点及研究应用现状,指出联合走时层析与波形反演的技术方法在时间域分步骤、多尺度的反演策略是近地表高精度建模的有效手段和发展方向,能有效提高建模精度,适应高精度成像要求。该方法在近地表的矿产普查、工程物探、油气勘探等领域存在广泛的应用前景。

关键词: 全波形反演联合反演策略高精度多尺度走时层析    
Abstract:

Seismic velocity is a critical factor in reflecting underground structure and lithology. The accuracy of near-surface velocity directly influences the results of static correction, velocity analysis and the final imaging in exploration areas. Near-surface modeling methods and technologies commonly used are based on the ray theory of high-frequency approximation, which barely meet the highaccuracy request in current nearsurface modeling. Through an overall investigation into nearsurface modeling technologies such as micro logging, mini refraction, surface wave method, traveltime tomography and Full Waveform Inversion (FWI), this paper summarizes their adaptability, advantages and disadvantages, research and application status, points out that by combining traveltime tomography and waveform inversion, the step-by-step and multiscale inversion strategy in the time domain is an effective means and trend of near-surface high-accuracy modeling, which can improve modeling accuracy effectively and meet the requirements of high accuracy imaging. Thus, the method has widespread application prospects in near-surface mineral prospecting, engineering geophysics and hydrocarbon exploration.

Key words: Multiscale    Full waveform inversion    Joint inversion strategy    High-accuracy.    Traveltime tomography
收稿日期: 2014-06-13 出版日期: 2014-10-20
:  P631  
基金资助:

国家科技重大专项课题“井数据驱动的高精度地震处理关键技术”(编号:2011ZX05006-002);国家自然科学基金青年科学基金项目“深层复杂介质全波场波形反演方法研究”(编号:41204086)资助.

作者简介: 王振宇(1989),男,山西大同人,硕士研究生,主要从事地震波传播理论、层析反演和波形反演研究. E-mail: wangzhenyu121@163.com
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引用本文:

王振宇, 杨勤勇, 李振春, 胡光辉, 尹力, 王杰. 近地表速度建模研究现状及发展趋势[J]. 地球科学进展, 2014, 29(10): 1138-1148.

Wang Zhenyu, Yang Qinyong, Li Zhenchun, Hu Guanghui, Yin Li, Wang Jie. Research Status and Development Trend of Near-Surface Velocity Modeling. Advances in Earth Science, 2014, 29(10): 1138-1148.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2014.10.1138        http://www.adearth.ac.cn/CN/Y2014/V29/I10/1138

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