南阳凹陷白秋地区观测系统优化设计
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摘要
南阳凹陷白秋地区油气勘探的主要目的是寻找岩性加构造油气藏,要求地震资料具有很高的分辨率和频宽。通过对以往地震资料观测系统的分析研究,结合勘探目标特点,建立了地球物理模型,在此基础上,从采集面元、主要目的层深浅变化特点、纵横向覆盖次数、减小"采集脚印"等多方面入手,认真进行观测系统的论证、优化设计,优选出抗噪强及能有效提高目的层分辨率和频宽的观测系统。通过2006年度白秋地区三维地震资料采集技术实际应用,较大地提高了该区地震资料的信噪比和分辨率,较好地完成了地质勘探任务。
The purpose of exploration in Baiqiu block of Nanyang depression was mainly to find lithologic & structural reservoir,which required high resolution and wide bandwidth of acquisition data. Through analysis of previous seismic datarecording geometry,combining the characteristics of exploration target,the geophysical model was built. Based on this,started with acquisition bins,variety in main target layers' depth,folds of inline and cross-line data,decrease of"acquisition footprint",etc. ,carefully carrying on record geometry demonstration,optimization design and optimizing a recording geometry which has antinoise effect and effectively improve target layers' resolution and bandwidth. The actu-al application in 2006 of Baiqiu block three-dimensional seismic data acquisition has greatly improved the S/N and resolution,and well accomplished with the geological task.
The purpose of exploration in Baiqiu block of Nanyang depression was mainly to find lithologic & structural reservoir,which required high resolution and wide bandwidth of acquisition data. Through analysis of previous seismic datarecording geometry,combining the characteristics of exploration target,the geophysical model was built. Based on this,started with acquisition bins,variety in main target layers' depth,folds of inline and cross-line data,decrease of"acquisition footprint",etc. ,carefully carrying on record geometry demonstration,optimization design and optimizing a recording geometry which has antinoise effect and effectively improve target layers' resolution and bandwidth. The actu-al application in 2006 of Baiqiu block three-dimensional seismic data acquisition has greatly improved the S/N and resolution,and well accomplished with the geological task.
引文
[1]林学庆,罗家群,陈萍,等.南阳凹陷北部斜坡带有利勘探目标分析[J].河南石油,2002,16(6):11-13
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[3]陆基孟.地震勘探原理[M].山东东营:石油工业出版社,1993:19-37
[4]Andreas Cordsen,John W.Piece著,俞寿朋译,陆上三维地震勘探的设计与施工[M].涿州:石油地球物理勘探局出版社,1996:20~38
[5]李庆忠.对宽方位角三维采集不要盲从~到底什么叫“全三维采集”[J].石油地球物理勘探,2001,36(1):122-125
[6]凌云研究小组.宽方位角地震勘探应用研究[J].石油地球物理勘探,2003,38(4):350-357
[7]凌云,高军,孙德胜,等.宽/窄方位角勘探实例分析与评价(一).石油地球物理勘探,2005,40(3):305-308
[8]尹成,吕公河,田继东,等,基于地球物理目标参数的三维观测系统优化设计[J].石油物探,2006,45(1):74-78
[9]吕公河.高精度地震勘探采集技术探讨[J].石油地球物理勘探,2005,40(3):261~267
[2]俞寿朋.高分辨率地震勘探[M].北京:石油工业出版社,1993:89-102
[3]陆基孟.地震勘探原理[M].山东东营:石油工业出版社,1993:19-37
[4]Andreas Cordsen,John W.Piece著,俞寿朋译,陆上三维地震勘探的设计与施工[M].涿州:石油地球物理勘探局出版社,1996:20~38
[5]李庆忠.对宽方位角三维采集不要盲从~到底什么叫“全三维采集”[J].石油地球物理勘探,2001,36(1):122-125
[6]凌云研究小组.宽方位角地震勘探应用研究[J].石油地球物理勘探,2003,38(4):350-357
[7]凌云,高军,孙德胜,等.宽/窄方位角勘探实例分析与评价(一).石油地球物理勘探,2005,40(3):305-308
[8]尹成,吕公河,田继东,等,基于地球物理目标参数的三维观测系统优化设计[J].石油物探,2006,45(1):74-78
[9]吕公河.高精度地震勘探采集技术探讨[J].石油地球物理勘探,2005,40(3):261~267
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