天然气水合物准三维地震调查导航定位技术
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摘要
随着我国天然气水合物调查工作进展到需要实施钻探阶段,为了进一步提高水合物识别的准确度,精确描述水合物矿体的外部形态及展布特征,获取矿体准确的位置信息,必须要提高导航定位的精度。在水合物调查的实践过程中,根据单源单缆准三维地震的特殊性,通过对定位网络配置、误差分析、数据处理等技术方法的建立,有效地提高了定位精度并在实际的工作实践中取得了明显的效果,为水合物的获取提供了有力的技术支持。
With the exploration of gas hydrate in China going forward to the phase when field test drilling is carried out,the accuracy of navigation and positioning has to be improved to identify gas hydrate more accurately and describe its outer conformation and distribution characteristics more precisely so as to determine where gas hydrate exactly exists.In normal gas hydrate investigation,navigation and positioning accuracy can be greatly improved by means of different methods such as positioning network configuration,error analysis and data post processing based on the particularity of single streamer and single source pseudo-3D seismic survey.These methods have been proved to be of significant effect on practical field seismic data acquisition and will provide effective technical support for the discovery of gas hydrate in China.
With the exploration of gas hydrate in China going forward to the phase when field test drilling is carried out,the accuracy of navigation and positioning has to be improved to identify gas hydrate more accurately and describe its outer conformation and distribution characteristics more precisely so as to determine where gas hydrate exactly exists.In normal gas hydrate investigation,navigation and positioning accuracy can be greatly improved by means of different methods such as positioning network configuration,error analysis and data post processing based on the particularity of single streamer and single source pseudo-3D seismic survey.These methods have been proved to be of significant effect on practical field seismic data acquisition and will provide effective technical support for the discovery of gas hydrate in China.
引文
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[2]凌云,吴琳,陈波,等.宽/窄方位角勘探实例分析与评价(一)[J].石油地球物理勘探,2005,40(3):305.308,317.[LI NG Yun,WULin,CHENBo,et al.Prospecting sample and eval.uation of Wide/Narrow.azi muth seismic surveys(Ⅰ)[J].Geo.physical Exploration for Petroleum,2005,40(3):305.308,317.]
[3]凌云,吴琳,陈波,等.宽/窄方位角勘探实例分析与评价(二)[J].石油地球物理勘探,2005,40(4):423.427.[LI NG Yun,WU Lin,CHEN Bo,et al.Prospecting sample and evaluation of Wide/Narrow.azi muth seismic surveys(Ⅱ)[J].Geophysical Exploration for Petroleum,2005,40(4):423.427.]
[4]Andreas Cordsen.陆上三维地震勘探的设计与施工[M].石油工业出版社,1996.[Andreas Cordsen.Design and Construc.tion of Land3D Seismic Surveys[M].Beijing:PetroleumIn.dustry Press,1996.]
[5]郝钧.三维地震勘探技术[M].北京:石油工业出版社,1992.[HAOJun.Technology of Land3D Seismic Surveys[M].Bei.jing:PetroleumIndustry Press,1992.]
[6]曹占全,杨思勤.多源多缆震源电缆定位传感器配置方法[C]//中国海洋石油“三新、三化”优秀论文集.1999.[CAO Zhan.quan,YANG Si.qin.Deploy methods of positioning.sen.sor of multi.source and multi.cable of seismic source cable[C]//Institute of Geophysical Prospecting of CNNOC:Col.lected Excellent Papers of“Three New&Three Changed”of CNNOC.1999.]
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