三维观测系统采集脚印定量分析技术
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摘要
"采集脚印"是三维地震勘探中的一种地震噪声,是三维地震观测系统的固有属性,严重影响采集资料的振幅保真度及处理和解释效果。本文论述的三维观测系统采集脚印定量分析技术可定量描述三维观测系统接收、激发参数及施工方式与采集脚印的关系,综合考虑道距、接收线距、炮点距、炮线距、排列滚动线数、地层深度及变观方式等因素对形成采集脚印的影响,提供了从设计源头压制采集脚印、优化三维观测系统的方法。该方法在地震勘探实践中取得了良好的应用效果。
"Footprint",a kind of noise of 3-D seismic,is mainly depend on seismic geometry.It harms amplitude fidelity during data acquisition,and affect badly processing and interpretation.In this article,we propose a quantitative analysis method of 3-D geometry footprint,which describe quantitatively the relationship between receiver parameter,source parameter and operation procedure.Considering the influence factors on footprint,such as receiver interval,receiver line interval,source interval,source line interval,number of rolling lines,target depth,and geometry changes,this method can effectively suppress footprint from geometry design and optimize 3-D seismic geometry.
引文
[1]侯成福等.三维观测系统与采集脚印.石油地球物理勘探,2007,42(6):611~615Hou Cheng-fu et al.3-D geometry and acquisitionfootprint.OGP,2007,42(6):611~615
    [2]中国石油集团东方地球物理公司,中国石油学会物探专业委员会.地震勘探方法理论与实践——地震资料采集分册.地震勘探方法高级培训教材系列丛书,2006,68~70
    [3]董世泰等.压制三维地震数据采集脚印的方法研究.石油地球物理勘探,2007,42(1):7~11Dong Shi-tai et al.Method research for suppression ofacquisition footprint of 3-D seismic data.OGP,2007,42(1):7~11
    [4]尹成等.三维观测系统属性分析与优化设计.石油地球物理勘探,2005,40(5):495~498Yin Cheng et al.Attributes analysis and opti mum de-sign of 3-D geometry.OGP,2005,40(5):495~498
    [5]熊金良等.基于地震物理模拟的采集脚印分析.石油地球物理勘探,2006,41(5):493~497Xiong Jin-liang et al.Analysis of acquisition footprintsbased on seismic physical si mulation.OGP,2006,41(5):493~497
    [6]碗学俭等.影响观测系统采集脚印的因素分析.中国石油勘探,2009,14(6):60~64Wan Xue-jian et al.Factorial analysis of the influenceof geometry acquisition footprint.China PetroleumExploration,2006,14(6):60~64

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