应用数值模拟方法分析观测系统压噪效果
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摘要
本文采用数值模拟方法分别从观测系统属性、反射波能量和地震资料品质等方面分析了不同观测系统压制干扰波的效果,得出以下结论:①不同观测系统对线性干扰波具有不同压制效果,横纵比大的观测系统具有较好压制效果;②改善面元属性(方位角和炮检距分布均匀)、增大排列片横纵比,不仅能降低采集脚印,同时能更好地压制线性干扰,削弱噪声。因此数值模拟方法是一种较为经济实用的分析研究观测系统的方法,且具有较高的灵活性和适应性。
In this paper,we propose a noise attenuation method by 3D geometry numerical simulation.We simulate 3D seismic acquisitions with different geometries and process the datasets with the same processing flow and parameters.The following understandings have been found:(1)Simulations show that different geometries have different capability of linear interference suppression.Geometry with larger aspect ratio gets better noise suppression.(2)Three different geometries are simulated.The results show that the geometry with smaller bin size and larger aspect ratio removes linear noise and footprints better than the others.This method is an effective and practical way to optimize geometry design.
In this paper,we propose a noise attenuation method by 3D geometry numerical simulation.We simulate 3D seismic acquisitions with different geometries and process the datasets with the same processing flow and parameters.The following understandings have been found:(1)Simulations show that different geometries have different capability of linear interference suppression.Geometry with larger aspect ratio gets better noise suppression.(2)Three different geometries are simulated.The results show that the geometry with smaller bin size and larger aspect ratio removes linear noise and footprints better than the others.This method is an effective and practical way to optimize geometry design.
引文
[1]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 simulation.OGP,2006,41(5):493～497
[2]张军华等.地震采集脚印综合评述.石油仪器,2007,21(5):1～4Zhang Jun-hua et al.An overview of the methods andtechniques for seismic acquisition footprints.Petrole-um Instrument,2007,21(5):1～4
[3]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
[4]加尔彼林E I著;朱光明等译.垂直地震剖面方法.北京:石油工业出版社,1983:228
[5]绿山软件使用手册.绿山公司,2006,V10.0
[2]张军华等.地震采集脚印综合评述.石油仪器,2007,21(5):1～4Zhang Jun-hua et al.An overview of the methods andtechniques for seismic acquisition footprints.Petrole-um Instrument,2007,21(5):1～4
[3]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
[4]加尔彼林E I著;朱光明等译.垂直地震剖面方法.北京:石油工业出版社,1983:228
[5]绿山软件使用手册.绿山公司,2006,V10.0
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