震源子波反褶积在海洋地震资料处理中的应用  

Application of seismic source wavelet deconvolution in marine seismic survey

作　　者：王红丽[1] 丁在宇[2] 桂德军 黄金连[2] 

机构地区：[1]国土资源部海洋油气资源与环境地质重点实验室,青岛海洋地质研究所,山东青岛266071 [2]中国石油天然气股份有限公司东方地球物理公司研究院大港分院,天津大港300280 [3]CGGVeritas北京办公室,北京100004

出　　处：《石油物探》2013年第1期49-54,5,共6页Geophysical Prospecting For Petroleum

摘　　要：辨别和消除虚反射及气泡效应的影响是提高海洋地震资料分辨率和解释精度的重要环节。研究了压制海洋地震资料虚反射和气泡效应的震源子波反褶积方法,根据震源子波处理的原理及反滤波因子的求取过程,给出了实际生产中常用的震源子波处理流程。首先通过确定性子波反褶积消除虚反射、气泡震荡的影响,然后对震源子波进行整形处理,使其满足后续的反褶积处理所需的最小相位假设条件。将上述方法应用于南黄海盆地某工区实际资料处理,使地震剖面上反射波的续至相位得到有效抑制,子波的形态得到了很好的恢复,证明方法是实用的。The identification and elimination of ghost and bubble effect is an important step for improving resolution and interpretation accuracy of marine seismic data.We discussed the source wavelet deconvolution method for suppressing ghost and bubble effect in marine seismic data and gave conventional source wavelet processing workflow.Ghost and bubble effect are firstly eliminated by means of deterministic wavelet deconvolution,Minimum phase is then used in shape-correction treatment of air gun waveform to make it meet minimum phase hypothesis needed in deconvolution.The above methods were applied on the actual data from South Yellow Sea Basin.The results show that secondary arrival phase of reflections in seismic section is effectively inhibited and wavelet shape is recovered,which proves the effectiveness of the methods.

关 键 词：反褶积 虚反射 子波处理 续至相位 

分 类 号：P631.443[天文地球—地质矿产勘探]