复杂近地表初至波层析反演静校正技术研究

doi:10.6038/pg20170249

地球物理学进展 ›› 2017, Vol. 32 ›› Issue (2): 816-821.doi: 10.6038/pg20170249

复杂近地表初至波层析反演静校正技术研究

张林¹, 杨勤勇¹, 张兵^1,3, 郭立鹏^1,2

1. 中国石油化工股份有限公司石油物探技术研究院, 南京 211103;
2. 中国石油大学(华东)地球科学与技术学院, 青岛 266580;
3. 同济大学海洋与地球科学学院海洋地质国家重点实验室, 上海 200092

收稿日期:2016-06-12 修回日期:2017-01-06 出版日期:2017-04-20 发布日期:2017-04-20
作者简介:张林,女,1989年生,硕士,主要从事地震成像与速度反演研究.(E-mail:zhanglin.swty@sinopec.com)

Tomography inversion by first breaks in areas with complex near surface

ZHANG Lin¹, YANG Qin-yong¹, ZHANG Bing^1,3, GUO Li-peng^1,2

1. Sinopec Geophysical Research Institute, Nanjing 211103, China;
2. School of Geosciences, China University of Petroleum, Qingdao 266580, China;
3. School of Ocean and Earth Science, Tongji University, Shanghai 200092, China

Received:2016-06-12 Revised:2017-01-06 Online:2017-04-20 Published:2017-04-20

摘要/Abstract

摘要：

山前带、黄土塬等复杂近地表地区已成为目前勘探的重点，因其地表起伏剧烈、高差严重等的现象，近地表建模技术严重影响着静校正的准确性.近地表速度建模的方法有很多，包括层析法，折射法，面波法等，旅行时层析法是目前速度建模的一种准确高效的方法，其基于射线理论，利用地震波旅行时信息来反演地下速度.本文利用初至旅行时层析进行近地表建模，并在起伏异常体模型上进行了近地表建模，模型测试说明了本文中方法在山前带等复杂近地表地区进行静校正等的有效性.

Abstract:

Foothill zones which bear complex near surface conditions have become targeted exploration areas in recent years. Due to its strongly rugged surface、severe elevation difference and other features, an accurate model building technique is badly needed, which has great impact on static in these areas. There are many near surface model building methods, such as tomography, refraction, etc. Travel-time tomography is an efficient and precise method for near surface model building. Based on ray propagation theory, it uses seismic wave travel-times to invert medium velocity. In this paper, the author applied first-break travel-time tomography to near surface model building and model tests have shown that the method is effective and robust in near surface model building of complicated medium.

中图分类号:

P631

张林, 杨勤勇, 张兵, 郭立鹏. 2017. 复杂近地表初至波层析反演静校正技术研究. 地球物理学进展, 32(2): 816-821. doi: 10.6038/pg20170249.

ZHANG Lin, YANG Qin-yong, ZHANG Bing, GUO Li-peng. 2017. Tomography inversion by first breaks in areas with complex near surface. Progress in Geophysics. 32(2): 816-821. doi: 10.6038/pg20170249.

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复杂近地表初至波层析反演静校正技术研究

Tomography inversion by first breaks in areas with complex near surface

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