震源子波反褶积在海洋地震资料处理中的应用
|
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.
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.
引文
[1]陈金海,王桂华,李国发.海上地震虚反射探讨[J].海洋石油,2000,1(1):22-27Chen J H,Wang G H,Li G F.Assessment of ghostsin marine seismic data[J].Marine Petroleum,2000,1(1):22-27
[2]杨文达,刘望军.海洋高分辨率地震技术在浅部地质勘探中的运用[J].海洋石油,2007,27(2):18-25Yang W D,Liu W J.Marine high-resolution sesmictechniques applying in the geological exploration ofshallow strata[J].Offshore Oil,2007,27(2):18-25
[3]陈浩林,全海燕,於国平,等.气枪震源理论与技术综述(上)[J].物探装备,2008,18(4):211-217Chen H L,Quan H Y,Yu G P,et al.Summary ofairgun source theory and technology(1)[J].Equip-ment for Geophysical Prospecting,2008,18(4):211-217
[4]孙振刚,李宏图,张晓渝,等.海洋拖揽地震资料处理关键技术[J].天然气工业,2007,27(增刊A):192-194Sun Z G,Li H T,Zhang X Y,et al.Seismic data pro-cessing gordian technique of deep-sea streamer[J].Gas Industry,2007,27(SA):192-194
[5]宁日亮,张文波,张淑梅,等.深海拖揽二维地震资料处理技术[J].石油地球物理勘探,2006,41(5):519-524Ning R L,Zhang W B,Zhang S M,et al.2Dseismicdata processing from deep-sea streamer[J].Oil Geo-physical Prospecting,2006,41(5):519-524
[6]李振勇,姜浩,李东升.海洋地震数据处理技术探讨[J].石油地球物理勘探,2007,42(增刊):8-13Li Z Y,Jiang H,Li D S.Discussion on marine sesmicdata processing technique[J].Oil Geophysical Pros-pecting,2007,42(S):8-13
[7]牟永光,陈小宏,李国发,等.地震数据处理方法[M].北京:石油工业出版社,2007:57-100Mou Y G,Chen X H,Li G F,et al.Seismic data en-hancement[M].Beijing:Petroleum Industry Press,2007:57-100
[8]伊尔马滋.渥.地震资料分析——地震资料处理、反演和解释(上册)[M].刘怀山,王克斌,童思友,等译.北京:石油工业出版社,2006:122-178Yilmaz W.Seismic data analysis:processing,inver-sion,and interpretation of seismic data(Volume 1)[M].Liu H S,Wang K B,Tong S Y,et al,transla-tor.Beijing:Petroleum Industry Press,2006:122-178
[2]杨文达,刘望军.海洋高分辨率地震技术在浅部地质勘探中的运用[J].海洋石油,2007,27(2):18-25Yang W D,Liu W J.Marine high-resolution sesmictechniques applying in the geological exploration ofshallow strata[J].Offshore Oil,2007,27(2):18-25
[3]陈浩林,全海燕,於国平,等.气枪震源理论与技术综述(上)[J].物探装备,2008,18(4):211-217Chen H L,Quan H Y,Yu G P,et al.Summary ofairgun source theory and technology(1)[J].Equip-ment for Geophysical Prospecting,2008,18(4):211-217
[4]孙振刚,李宏图,张晓渝,等.海洋拖揽地震资料处理关键技术[J].天然气工业,2007,27(增刊A):192-194Sun Z G,Li H T,Zhang X Y,et al.Seismic data pro-cessing gordian technique of deep-sea streamer[J].Gas Industry,2007,27(SA):192-194
[5]宁日亮,张文波,张淑梅,等.深海拖揽二维地震资料处理技术[J].石油地球物理勘探,2006,41(5):519-524Ning R L,Zhang W B,Zhang S M,et al.2Dseismicdata processing from deep-sea streamer[J].Oil Geo-physical Prospecting,2006,41(5):519-524
[6]李振勇,姜浩,李东升.海洋地震数据处理技术探讨[J].石油地球物理勘探,2007,42(增刊):8-13Li Z Y,Jiang H,Li D S.Discussion on marine sesmicdata processing technique[J].Oil Geophysical Pros-pecting,2007,42(S):8-13
[7]牟永光,陈小宏,李国发,等.地震数据处理方法[M].北京:石油工业出版社,2007:57-100Mou Y G,Chen X H,Li G F,et al.Seismic data en-hancement[M].Beijing:Petroleum Industry Press,2007:57-100
[8]伊尔马滋.渥.地震资料分析——地震资料处理、反演和解释(上册)[M].刘怀山,王克斌,童思友,等译.北京:石油工业出版社,2006:122-178Yilmaz W.Seismic data analysis:processing,inver-sion,and interpretation of seismic data(Volume 1)[M].Liu H S,Wang K B,Tong S Y,et al,transla-tor.Beijing:Petroleum Industry Press,2006:122-178
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心