子波法去鬼波在墨西哥湾的应用
|
摘要
海洋深水地震资料鬼波发育,造成地质假象,严重影响油田的勘探开发。分析地震资料采集环境及采集特征,采用子波法压制鬼波,在Echos(地震资料处理软件)处理平台上,利用采集设计子波,计算反褶积算子,再将压制鬼波算子应用于实际地震资料。鬼波压制后频率域陷波点得到有效补偿,单炮及叠加剖面上鬼波被有效压制,资料品质得到明显改善,利于构造解释及储层研究。
The ghost wave is developed well in deep water.Meanwhile,the seismic profile will be wrong when the ghost and the reflection merge or separate,and this situation infuences the oilfield exploration and development seriously.In order to analyze the characteristics of the seismic data acquisition environment and acquisition,the authors chose the wavelet method to remove the ghost wave by Echos( software of seismic data processing) processing platform.According to the acquisition parameter,the wavelet was designed for calculating the de-convolution factor which was applied to the actual seismic data.After the application,the notch points were compensated effectively.The results show that the ghost wave is effectively attenuated both on the shot and on stack profile,and the quality is effectively improved,which is benificial to the tectonic interpretation and reservoir research.
The ghost wave is developed well in deep water.Meanwhile,the seismic profile will be wrong when the ghost and the reflection merge or separate,and this situation infuences the oilfield exploration and development seriously.In order to analyze the characteristics of the seismic data acquisition environment and acquisition,the authors chose the wavelet method to remove the ghost wave by Echos( software of seismic data processing) processing platform.According to the acquisition parameter,the wavelet was designed for calculating the de-convolution factor which was applied to the actual seismic data.After the application,the notch points were compensated effectively.The results show that the ghost wave is effectively attenuated both on the shot and on stack profile,and the quality is effectively improved,which is benificial to the tectonic interpretation and reservoir research.
引文
[1]Moldveanu N.Seismec source,a marine surveying arrangement,a method of operating a marine seismic source and a method of deghosting seismec data[P].USA Patent,20040008577,2004-01-15.
[2]Moldoveanu N.Vertical source array in marine seismic exploration[C]//Expanded Abstracts of the 70thAnnual SEG Meeting.Calgary,Alberta:Society of Exploration Geophysicists,2000:53-56.
[3]赵仁永,张振波,轩义华.上下源、上下缆地震采集技术在珠江口的应用[J].石油地球物理勘探,2011,46(4):517-521.
[4]Parrack A L.Method of marine reflection-type seismic exploration[P].USA Patent,3979713,1976-09-07.
[5]管西竹,陈宝书,符力耘,等.基于波动方程的上下缆地震数据鬼波压制方法研究[J].地球物理学报,2015,58(10):3746-3757.
[6]Brink M,Svendsen M.Marine seismic exploration using vertical receiver arrays:ameans for reduction of weather downtime[C]//Expanded Abstracts of the 57thAnnual SEG Meeting.New Orleans,Louisiana:Society of Exploration Geophysicists,1987:184-187.
[7]Barr F J,Sanders J I.Attenuation of water-column reverberations using pressure and velocity detectors in a water-bottom cable[C]//Expanded Abstracts of the 59thAnnual SEG Meeting.Dallas,Texas:Society of Exploration Geophysicists,1989:653-656.
[8]Soubaras R.Ocean bottom hydrophone and geophone processing[C]//Expanded Abstracts of the 66thAnnual SEG Meeting.Denver,Colorado:Society of Exploration Geophysicists,1996:24-27.
[9]赵伟,陈小宏,李景叶.海底电缆采集地震数据多次波压制处理[J].西安石油大学学报:自然科学版,2007,22(6):1-4.
[10]Starr J G.Method of reverberation removal from seismic data and removal of dual-sensor coupling errors[P].USA Patent,5825716,1998-10-20.
[11]Soubaras R.Deghosting by joint deconvolution of a migration and a mirror migration[C]//Expanded Abstracts of the 80thAnnual SEG Meeting.Denver,Colorado:Society of Exploration Geophysicists,2010:3406-3410.
[12]Soubaras R,Dowle R.Variable-depth streamer,a broadband marine solution[J].First Break,2010,28(12):89-96.
[13]宋建国,宫云良,李珊.斜缆数据频率域高分辨率Radon变换与虚反射消除方法[J].应用地球物理,2015,12(4):564-572.
[14]陆敬安,伍忠良,曾宪军.海洋地震勘探中地震波、鬼波综合效应分析与应用[J].海洋技术,2006,25(4):76-78,98.
[15]丁洪波.海上地震资料鬼波机理与消除方法研究[D].青岛:中国石油大学(华东),2013:21-26.
[2]Moldoveanu N.Vertical source array in marine seismic exploration[C]//Expanded Abstracts of the 70thAnnual SEG Meeting.Calgary,Alberta:Society of Exploration Geophysicists,2000:53-56.
[3]赵仁永,张振波,轩义华.上下源、上下缆地震采集技术在珠江口的应用[J].石油地球物理勘探,2011,46(4):517-521.
[4]Parrack A L.Method of marine reflection-type seismic exploration[P].USA Patent,3979713,1976-09-07.
[5]管西竹,陈宝书,符力耘,等.基于波动方程的上下缆地震数据鬼波压制方法研究[J].地球物理学报,2015,58(10):3746-3757.
[6]Brink M,Svendsen M.Marine seismic exploration using vertical receiver arrays:ameans for reduction of weather downtime[C]//Expanded Abstracts of the 57thAnnual SEG Meeting.New Orleans,Louisiana:Society of Exploration Geophysicists,1987:184-187.
[7]Barr F J,Sanders J I.Attenuation of water-column reverberations using pressure and velocity detectors in a water-bottom cable[C]//Expanded Abstracts of the 59thAnnual SEG Meeting.Dallas,Texas:Society of Exploration Geophysicists,1989:653-656.
[8]Soubaras R.Ocean bottom hydrophone and geophone processing[C]//Expanded Abstracts of the 66thAnnual SEG Meeting.Denver,Colorado:Society of Exploration Geophysicists,1996:24-27.
[9]赵伟,陈小宏,李景叶.海底电缆采集地震数据多次波压制处理[J].西安石油大学学报:自然科学版,2007,22(6):1-4.
[10]Starr J G.Method of reverberation removal from seismic data and removal of dual-sensor coupling errors[P].USA Patent,5825716,1998-10-20.
[11]Soubaras R.Deghosting by joint deconvolution of a migration and a mirror migration[C]//Expanded Abstracts of the 80thAnnual SEG Meeting.Denver,Colorado:Society of Exploration Geophysicists,2010:3406-3410.
[12]Soubaras R,Dowle R.Variable-depth streamer,a broadband marine solution[J].First Break,2010,28(12):89-96.
[13]宋建国,宫云良,李珊.斜缆数据频率域高分辨率Radon变换与虚反射消除方法[J].应用地球物理,2015,12(4):564-572.
[14]陆敬安,伍忠良,曾宪军.海洋地震勘探中地震波、鬼波综合效应分析与应用[J].海洋技术,2006,25(4):76-78,98.
[15]丁洪波.海上地震资料鬼波机理与消除方法研究[D].青岛:中国石油大学(华东),2013:21-26.