干旱区生态环境知识资源中心(Arid): 沙漠地区震采集避高就低方法探讨

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	沙漠地区震采集避高就低方法探讨
其他题名	Discussion on the method of "dodging thick LVL and moving from high places to the lower" in desert seismic acquisition
	王德志 1; 贾烈明 2
来源期刊	石油物探
ISSN	1000-1441
出版年	2003
卷号	42 期号:3 页码:350-354
中文摘要	沙漠地区地表是起伏连绵的沙丘，在沙丘的高部位，疏松干燥沙层(低降速带)的厚度可达几十米至上百米，而在2个沙丘之间的谷状地带低降速带的厚度一般只有几米。随着低降速带厚度增大，地震采集的激发条件和接收条件也随之变差，在一定程度上制约着地震资料信噪比的提高。地震采集施工过程中，根据沙丘分布情况，在一定的约束条件下，将部分激发点和接收点设置到沙漠的较低洼部位，避开较厚的低降速带，即避高就低，能有效改善激发和接收条件，取得更好的地震勘探地质效果。通过实际资料来说明高大沙匠对地震资料品质的影响，并从理论上探讨如何根据勘探目的层参数和勘探精度要求来规范避高就低方案。
英文摘要	Rolling dunes are met everywhere when seismic acquisition is carried out in deserts. The depth of loose and arid sand, i. e. LVL depth, can reach tens of meters in the thick parts of the dunes, whereas it is only several meters in the valleys between dunes. When the LVL thickness increases, the shooting and receiving conditions deteriorate, which to some extent restrains the data quality from improving. In order to dodge the thick LVL, some shooting and receiving points are moved to the lower places according to the scattering of dunes, which can effectively improve the shooting and receiving conditions and in turn yield desired seismic and geologic effects. This is called "dodging thick LVL and moving from high places to the lower". This paper analyzed the effect of high dunes on seismic data, and discussed theoretically how to design the scheme of "dodging thick LVL and moving from high places to the lower"according to the requirements of target parameters and surveying accuracy.
中文关键词	地震采集 ; 避高就低 ; 信噪比 ; 地震资料 ; 沙漠地区
英文关键词	seismic acquisition "dodging thick LVL and moving from high places to the lower" signal-to-noise ratio seismic data desert area
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENERGY FUELS
WOS研究方向	Energy & Fuels
CSCD记录号	CSCD:1308975
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204317
作者单位	1.中国地质大学(武汉), 武汉, 湖北 430074, 中国; 2.河南油田地调处, 南阳, 河南 473132, 中国
推荐引用方式 GB/T 7714	王德志,贾烈明. 沙漠地区震采集避高就低方法探讨[J],2003,42(3):350-354.
APA	王德志,&贾烈明.(2003).沙漠地区震采集避高就低方法探讨.石油物探,42(3),350-354.
MLA	王德志,et al."沙漠地区震采集避高就低方法探讨".石油物探 42.3(2003):350-354.