三维匹配拼接技术在西江——惠州工区的应用  

Application of 3-D matching technology in Huizhou area

作　　者：但志伟[1] 万欢[1] 陈瑜[1] 方中于[1] 

机构地区：[1]中国海洋石油总公司能源发展股份有限公司特普地球物理分公司,广东湛江524057

出　　处：《勘探地球物理进展》2010年第2期112-120,125,共10页Progress in Exploration Geophysics

基　　金：国家重大科技专项子专题"莺琼盆地高温高压区高精度地震资料采集处理技术研究"(2008ZX050000230401)资助

摘　　要：大油田往往是由不同三维地震工区组成,不同时间采集的三维地震资料由于各区块采用不同的处理系统、流程和参数,处理后的地震资料存在时间、振幅、频率和波形等波组特征不一致的问题,地震解释成果的闭合问题较严重。为此开展了三维连片处理技术研究,包括子波整形技术、振幅匹配技术、向高频率端匹配的处理技术、相位匹配技术、叠加速度匹配技术以及三维测网拼接匹配技术等。西江惠州工区三维地震资料维连片处理结果表明,处理后的地震剖面在振幅、频率、相位等波组特征方面有很好地一致性,信噪比、分辨率、保幅性明显提高,地震资料处理质量的提高证明了三维连片处理技术的有效性。In most cases,an oilfield consists of several seismic work areas. Hence,the three-dimensional seismic data acquired at different times may show differences in signal signatures in terms of time,amplitude,frequency,and waveform. The merging process is impossible,unless the seismic data of different work areas can be spliced seamlessly. In this article,unified seismic data processing is studied,including wavelet shaping,amplitude matching,phase matching,stack velocity matching,and survey grid splicing,etc. After merging processing,the wave group characteristics in Huizhou work area are reasonable,the signal-to-noise ratio and seismic resolution ratio are improved,the amplitude preservation is better. And in consequence,the seismic data quality is improved.

关 键 词：连片拼接 叠前匹配技术 叠后匹配技术 

分 类 号：P631.4[天文地球—地质矿产勘探]