基于预测反褶积理论的多次波压制技术研究  

Research on Multiple Wave Suppression Technique Based on Predictive Deconvolution Theory

作　　者：冯晟 郑勋 王沛 宋峙潮 Feng Sheng;Zheng Xun;Wang Pei;Song Zhichao(Engineering Technology Branch of CNOOC Energy Development Co.LTD.,Tianjin 300467,China)

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津300467

出　　处：《黑龙江科学》2023年第4期136-138,共3页Heilongjiang Science

摘　　要：多次波压制采用多道叠加的方法,即通过物理多道数据叠加的方式来识别和压制多次波,但会导致多次波产生偏移距,且随着叠加次数的增加偏移现象越来越明显。针对这一现象,提出了基于预测反褶积理论的地震数据保真处理技术,在单道多次波数据处理过程中产生了较好的效果。但地震资料需要了解整体剖面,还需检验其在地震剖面上的压制效果。常规浅水区块地震剖面同向轴较粗,在1 s区间内多次波发育,反褶积利用周期性多次波压制了海底鸣震,明显提高了浅层构造的分辨率,为井场勘察奠定了良好的基础,可保证海洋钻探工程的安全性。Multichannel superposition method is adopted for multiwave suppression.Multiple waves are identified and suppressed by means of superposition of physical multichannel data,but it will lead to multiple wave offset.And the offset phenomenon becomes more and more obvious with the increase of superposition times.According to the phenomenon,the study proposes the seismic data fidelity processing technology based on predictive deconvolution theory,with which relatively good effect is gained in the process of single channel multiple wave data processing.But we need to know the whole section of seismic data,and also need to test its compression effect on the seismic section.The coaxial axis of the seismic profile in the conventional shallow water block is thicker.In the 1 s interval,multiple waves develop,and submarine chirps is suppressed with the periodic multiple waves of deconvolution.In this way,the resolution ratio of suprastructure improves significantly,good foundation for exploration is laid,and the security of offshore drilling project is ensured.

关 键 词：井场勘察 反褶积 多次波 地震剖面 

分 类 号：P631.44[天文地球—地质矿产勘探]