地震资料精细处理技术在神狐海域研究区的应用

The Application of Accurate Seismic Processing in Shenhu Area

探讨以神狐海域研究区三维地震资料为基础,针对研究区崎岖海底造成的成像精度不高的问题,提出相关的处理方法:利用组合多次波压制技术解决崎岖海底多次波衰减难题,凸出中深层构造特征;利用预测反褶积及零相位处理技术提升浅层水合物分辨率;利用多次迭代速度分析技术逐步细化速度分析精度,突出水合物相关的速度反转特征。最终的处理效果表明,提出的相关处理技术达到了预期效果,成果中BSR极性反转、振幅空白带、速度反转等水合物相关地球物理特征清晰,断层等与水合物气源及运移通道研究相关的地质构造特征清晰,利于解释专家研究水合物的富集、成藏特征。

This article based on Shenhu Area’s seismic data,in order to solve the problem of low imaging accuracy caused by rugged seafloor in the research area,this paper proposes a targeted treatment method:using combined multiple wave suppression technology to solve the problem of multiple wave attenuation in rugged seafloor,protruding the structural characteristics of middle and deep layers;using predictive deconvolution and zero phase processing technology to improve the resolution of shallow hydrate;using multiple iterative velocity analysis techniques to refine the accuracy of velocity analysis gradually,highlight the velocity reversal feature of hydrate.The final treatment results show that the targeted treatment technology proposed in this paper has achieved the expected results.The geophysical characteristics of hydrate related to BSR polarity reversal,amplitude blank zone and velocity reverse are clear,and the geological structural characteristics are clear such as faults,which are related to hydrate gas source and migration channel research.The result is helpful for interpretation experts to study hydrate enrichment and reservoir formation characteristics.