【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。更多还原

【Abstract】 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.更多还原