时移地震数据互均衡处理方法研究
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摘要
在时移地震实际生产中总是存在不一致性的因素,主要表现在时间信号延迟、信号能量差异、信号的带宽差异及相位差异等4个方面。为了消除或减少这些不一致性因素,在时移地震资料处理中,出现了4种互均衡技术:资料的时间移动,均方根能量补偿(也叫振幅均衡),带宽均衡及相位均衡。通过模拟出不同时间存在的振幅、时间、相位、频率等单因素差异,再用互均衡技术对地震记录分别进行振幅、时间、相位、频率等单因素校正,获得了较好的结果。
The inconsistent factors always existed in practical time-lapse seismic work,and four aspects mainly came out: time-delay of signal,energy difference of signal,bandwidth difference of signal and phase difference.In order to remove or reduce the inconsistent factors,there are four cross equilibration techniques in time-lapse seismic data processing: time shift of data,mean square root(msr) energy compensation(amplitude equalization),bandwidth equalization and phase equalization.The paper simulated amplitude,time,phase,frequency as single ingredient difference from different times,and corrected seismic data in amplitude,time,phase,frequency by cross-equalization technique,obtained better outcome.
The inconsistent factors always existed in practical time-lapse seismic work,and four aspects mainly came out: time-delay of signal,energy difference of signal,bandwidth difference of signal and phase difference.In order to remove or reduce the inconsistent factors,there are four cross equilibration techniques in time-lapse seismic data processing: time shift of data,mean square root(msr) energy compensation(amplitude equalization),bandwidth equalization and phase equalization.The paper simulated amplitude,time,phase,frequency as single ingredient difference from different times,and corrected seismic data in amplitude,time,phase,frequency by cross-equalization technique,obtained better outcome.
引文
[1]李蓉,胡天跃.时移地震资料处理中的互均衡技术[J].石油地球物理勘探,2004,39(4):424-427.
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[3]Rickett J,Lumley D E.A cross-equalization processingflowfor off the shelf 4D seismic data[J].Expanded Ab-stracts of 68th SEG Mtg,1998,16-19.
[4]丁伟.互均衡处理技术的分析与应用[J].石油地球物理勘探,2007,42(1):17-23.
[5]陈小宏.四维地震数据的归一化方法及实例处理[J].石油学报,1999,20(3):22-26.
[6]Ross C P,Cunningham G Betal.Inside the cross-equali-zation black box[J].The Leading Edge,1996,15(11):1233-1240.
[7]Altan,Suat,Time-lapse seismic monitoring:Repeatabilityprocessing tests,Presented at the 67thAnn.Internat.Mtg.Soc.Expl.Geophys,Dallas,1997.
[8]Johnstad S E,Uden R C,Dunlop K N B.Seismic reser-voir monitoring over Oseberg field[J].First Break,1993,11(5):177-185.
[2]LumleyD E.Time-lap seseismic reservoir monitoring[J].Geophysics,2001,66(1):50-53.
[3]Rickett J,Lumley D E.A cross-equalization processingflowfor off the shelf 4D seismic data[J].Expanded Ab-stracts of 68th SEG Mtg,1998,16-19.
[4]丁伟.互均衡处理技术的分析与应用[J].石油地球物理勘探,2007,42(1):17-23.
[5]陈小宏.四维地震数据的归一化方法及实例处理[J].石油学报,1999,20(3):22-26.
[6]Ross C P,Cunningham G Betal.Inside the cross-equali-zation black box[J].The Leading Edge,1996,15(11):1233-1240.
[7]Altan,Suat,Time-lapse seismic monitoring:Repeatabilityprocessing tests,Presented at the 67thAnn.Internat.Mtg.Soc.Expl.Geophys,Dallas,1997.
[8]Johnstad S E,Uden R C,Dunlop K N B.Seismic reser-voir monitoring over Oseberg field[J].First Break,1993,11(5):177-185.
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