Angle-domain reverse time migration with Gaussian beams for TI media

被引：0
|
作者：
Xiao J. [1 ]
Li Z. [1 ]
Zhang K. [1 ]
Liu Q. [1 ]
机构：
[1] School of Geosciences, China University of Petroleum (East China), Qingdao, 266580, Shandong
来源：
Shiyou Diqiu Wuli Kantan/Oil Geophysical Prospecting | 2019年 / 54卷 / 05期
关键词：
Angle-domain common imaging gather (ADCIG); Green function; Reverse time migration with Gaussian beams; TI media;
D O I：
10.13810/j.cnki.issn.1000-7210.2019.05.014
中图分类号：
学科分类号：
摘要：
The reverse time migration with Gaussian beams combines the high efficiency and flexibility of Gaussian beam migration and the high precision of reverse time migration, which can be used for target-oriented imaging.In this paper, an anisotropic ray tracing algorithm based on phase velocity is introduced into the reverse time migration with Gaussian beams, and combined with the propagation angle information of Gaussian beam calculation, a more efficient angle-domain Gaussian beams reverse time migration method for TI media is realized.According to our model trial, compared with the conventional anisotropic algorithm based on elastic parameters, the proposed method has higher computational efficiency and extracted angle-domain common imaging gathers (ADCIGs) can not only provide support for subsequent migration velocity analysis, but also be used for stack imaging to suppress imaging noise and improve image quality. © 2019, Editorial Department OIL GEOPHYSICAL PROSPECTING. All right reserved.
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页码：1067 / 1074
页数：7
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