二维地震技术在煤层气勘探中存在的问题及对策
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摘要
二维地震技术贯穿于煤层气勘探开发整个过程。井位部署、开发方案编制、地质分析均离不开二维地震技术所提供的成果。本文通过对沁水盆地煤层气二维地震勘探过程中出现的单炮监视记录远端接收信号弱,目的层反射波不明显、静校正、偏移成像及解释成图四个问题进行了概括,并提出了相应解决对策,在沁水盆地煤层气勘探开发过程中取得了较好的应用效果。
The 2D seismic technology is applied to the entire process of the coalbed methane exploration and development.Well deployment,development programming,geological analysis are all needs the results of the 2D seismic technology.This paper summaries the problems which arise in the process of CBM 2D seismic exploration,then proposes the corresponding solutions and achieves a better effect thoughout the process of CBM exploration in QinShui basin.The problems are discussed in the paper such as weak signals,static correction,migration imaging,meanwhile,the reflected wave which belongs to the target layer is not obvious in the monitor records,interpreted as a map and so on.
The 2D seismic technology is applied to the entire process of the coalbed methane exploration and development.Well deployment,development programming,geological analysis are all needs the results of the 2D seismic technology.This paper summaries the problems which arise in the process of CBM 2D seismic exploration,then proposes the corresponding solutions and achieves a better effect thoughout the process of CBM exploration in QinShui basin.The problems are discussed in the paper such as weak signals,static correction,migration imaging,meanwhile,the reflected wave which belongs to the target layer is not obvious in the monitor records,interpreted as a map and so on.
引文
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[4]Yuan,S.Y.and Wang,S.X.Spectral sparse Bayesian learning reflectivity inversion.Geophysical Prospecting,2013,61(2),1-12.doi:10.1111/1365-2478.12000.
[5]王猛,朱炎铭,李伍,等.沁水盆地郑庄区块构造演化与煤层气成藏[J],中国矿业大学学报,2012,41(3):425-431.
[6]杨长春,刘兴材,李幼铭,等.地震叠前深度偏移方法流程及应用[J].地球物理学报,1996,39(3):409-415
[7]易远元.浅谈地震速度场建立的意义和方法.科协论坛[J],2010,10(下):94-95.
[2]云厚美,宋玉龙,丁伟,等.镇巴复杂山地地震成像质量影响因素及对策[J].勘探地球物理进展,2006,29(1):42-47.
[3]邹传皎.地震二维归位问题和三维地震勘探.石油物探[J],1988,27(4):79-88.
[4]Yuan,S.Y.and Wang,S.X.Spectral sparse Bayesian learning reflectivity inversion.Geophysical Prospecting,2013,61(2),1-12.doi:10.1111/1365-2478.12000.
[5]王猛,朱炎铭,李伍,等.沁水盆地郑庄区块构造演化与煤层气成藏[J],中国矿业大学学报,2012,41(3):425-431.
[6]杨长春,刘兴材,李幼铭,等.地震叠前深度偏移方法流程及应用[J].地球物理学报,1996,39(3):409-415
[7]易远元.浅谈地震速度场建立的意义和方法.科协论坛[J],2010,10(下):94-95.
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