海上地震资料潮汐校正技术的分析及应用  

Analysis and Application of Tidal Correction Methods of Marine Seismic Data

作　　者：陈华 王征[2] 张亚斌 

机构地区：[1]中海石油(中国)有限公司上海分公司,上海200030 [2]中海油田服务股份有限公司物探事业部,天津300451

出　　处：《石油天然气学报》2011年第1期90-93,167,共4页Journal of Oil and Gas Technology

摘　　要：海洋地震资料在采集过程中会受到潮汐的影响,由于目前进行勘探作业的区块大部分分布在近海,受近海水深浅和海岸线影响大的原因,潮汐的变化量比较大,这将直接影响crossline方向剖面的连续性或造成CDP道集内同相轴存在上下错动的时差。介绍了利用Skyfix XP高程数据进行潮汐校正和利用水深数据进行潮汐校正的技术,指出了它们各自的应用条件和精度,在实际应用中证明了这两种方法进行潮汐校正处理的可靠性。The marine seismic data would be influenced by tidal variations during collection,the most of seismic surveys were distributed in offshore areas where the tidal variations were obviously strong due to the effect of shallow water and the long coast.That would lead to lateral discontinuities on cross-line sections or jitters in CDP gathers.Two tidal correction methods are discussed in detail,of which Skyfix XP data or water depth data are deployed to correct the tidal correction,tidal correction the application conditions and precision of the two methodologies are tidal correction by analyzing their principles and technologies,the reliabilities by using these two techniques are further verified by testing them in actual surveys.

关 键 词：潮汐校正 高程 水深 静校正 时间切片 

分 类 号：P631.44[天文地球—地质矿产勘探]