采用射线追踪法的天然气水合物海底地震观测系统设计

doi:10.11978/j.issn.1009-5470.2011.01.064

热带海洋学报 ›› 2011, Vol. 30 ›› Issue (1): 64-69.doi: 10.11978/j.issn.1009-5470.2011.01.064cstr: 32234.14.j.issn.1009-5470.2011.01.064

采用射线追踪法的天然气水合物海底地震观测系统设计

伍忠良1, 伍人暾2

1．国土资源部广州海洋地质调查局, 广东广州 510760; 2．中南大学数学院, 湖南长沙 410012

收稿日期:2010-03-18 修回日期:2010-06-22 出版日期:2011-03-17 发布日期:2011-03-16
通讯作者: 伍人暾(1989—), 男, 广东省广州市人, 中南大学数学院学士(在读), 从事地球物理数学建模与研究。E-mail: 623539822@qq.com
作者简介:伍忠良(1967—), 男, 湖南省安乡县人, 高级工程师, 从事海洋地质地球物理勘察研究。E-mail: wzllzw1997@21cn.com
基金资助:
国家“863”计划重大项目((2006AA09A202, 2009AA09A201)

Layout design of ray tracing method on ocean bottom seismic survey for natural gas hydrate

WU Zhong-liang1, WU Ren-tun2

1. Guangzhou Marine Geological Survey Bureau, Ministry of Land & Resources, Guangzhou 510760, China; 2. School of Mathematics, Central South University, Changsha 410012, China

Received:2010-03-18 Revised:2010-06-22 Online:2011-03-17 Published:2011-03-16
Contact: 伍人暾(1989—), 男, 广东省广州市人, 中南大学数学院学士(在读), 从事地球物理数学建模与研究。E-mail: 623539822@qq.com
About author:伍忠良(1967—), 男, 湖南省安乡县人, 高级工程师, 从事海洋地质地球物理勘察研究。E-mail: wzllzw1997@21cn.com
Supported by:
国家“863”计划重大项目((2006AA09A202, 2009AA09A201)

摘要/Abstract

摘要：

射线追踪法是以建立的地下地质模型为基础, 研究不同的激发点发出的射线经地下地质界面反射后可以被接收到的信息, 从而了解不同的观测系统对于特定地质条件地震资料采集的效果, 对于海上地震采集相关参数的确定十分关键。在天然气水合物地震勘探中, 丰富的多波勘探信息对于查清水合物内部速度结构、提高地层的分辨率具有重要意义。本文在分析国外天然气水合物海底地震仪(OBS, ocean bottom seismometer)勘探的应用成果基础上, 采用射线追踪法理论计算和海上实验, 实现了针对天然气水合物的海底地震观测系统设计, 试验获得了转换横波记录, 取得了良好的应用效果。

关键词: 射线追踪法, 天然气水合物, 海底地震仪, 观测系统

Abstract:

Ray tracing method of basing on the subsurface geology model is very important for defining some parameters during marine seismic exploration. The signal reflected from underground interface can be directly viewed when different emission locations are chosen. Thus the effect of different seismic survey geometry on seismic data acquisition can be under-stood. It is also very significant for using multi-waves both to reveal the internal velocity structure of gas hydrates ores and enhance the resolution of gas hydrates bearing formations. By analyzing the application of ocean bottom seismometers (OBS) on the gas hydrate exploration abroad, the method of ray tracing was introduced on the layout design of OBS in this paper; PS wave was recorded in the sea test, which gives satisfied application result.

Key words: ray tracing method, natural gas hydrate, ocean bottom seismometer, layout design

伍忠良,伍人暾. 采用射线追踪法的天然气水合物海底地震观测系统设计[J]. 热带海洋学报, 2011, 30(1): 64-69.

WU Zhong-liang,WU Ren-tun. Layout design of ray tracing method on ocean bottom seismic survey for natural gas hydrate[J]. Journal of Tropical Oceanography, 2011, 30(1): 64-69.

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采用射线追踪法的天然气水合物海底地震观测系统设计

Layout design of ray tracing method on ocean bottom seismic survey for natural gas hydrate

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