叠前时间偏移技术在松辽盆地应用研究
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摘要
针对松辽盆地某区地震资料特点和数据处理难点,进行了针对性的三维静校正、叠前组合去噪和叠前时间偏移处理,取得了比较显著的效果。同时从叠前时间偏移的基本原理和实现过程,讨论了该区叠前偏移的孔径、反假频参数、速度模型优化及射线追综方法关键参数的选取,通过叠前时间偏移和叠后时间偏移结果的对比与分析可知,叠前时间偏移使地震资料的成像精度得到了较大幅度的提高,剖面上断点清楚,断层清晰,波组特征明显。
Here we introduced the application of pre-stack time migration technology in Songliao basin.The 3D static correction,pre-stack combination noise attenuation and pre-stack time migration processing were carried out in this area and made a relatively obvious effect.Meanwhile,we discussed the key parameters such as aperture,aliased factor,velocity model adjusting and ray-tracing method based on the pre-stack time migration principle and realization.By comparing and analyzing the results of pre-stack and post-stack migrations,it indicated that pre-stack time migration of seismic data substantially increased the imaging precision,the breakpoints and faults more clear and wave groups more obvious.
Here we introduced the application of pre-stack time migration technology in Songliao basin.The 3D static correction,pre-stack combination noise attenuation and pre-stack time migration processing were carried out in this area and made a relatively obvious effect.Meanwhile,we discussed the key parameters such as aperture,aliased factor,velocity model adjusting and ray-tracing method based on the pre-stack time migration principle and realization.By comparing and analyzing the results of pre-stack and post-stack migrations,it indicated that pre-stack time migration of seismic data substantially increased the imaging precision,the breakpoints and faults more clear and wave groups more obvious.
引文
[1]Zhang Yabin,Zheng Zhutang,Du Xian,et al.The applicationof prestack time migration technology in BMZ area[J].Petro-leum Geophysics,2008,6(3):25-29.[张亚斌,郑祝堂,杜贤,等.叠前时间偏移技术在河南BMZ地区的应用[J].油气地球物理,2008,6(3):25-29.]
[2]Xiong Zhu.Complex Seismic Data Processing Ideas[M].Bei-jing:Petroleum Industry Press,2002.[熊煮.复杂地区地震数据处理思路[M].北京:石油工业出版社,2002.]
[3]Luo Yinhe,Liu Jiangping,Dong Qiaoliang,et al.Kirchhoffcurved-ray prestack time migration and its application[J].Natural Gas Industry,2005,25(8):35-37.[罗银河,刘江平,董桥梁,等.Kirchhoff弯曲射线叠前时间偏移及应用[J].天然气工业,2005,25(8):35-37.]
[4]Huang Ling,Li Gang,Li Chunyu,et al.The application ofprestack migration technique in Jilin area[J].Natural Gas In-dustry,2007,27(supplement A):134-136.[黄棱,李刚,李春雨,等.叠前偏移处理技术在吉林探区的应用[J].天然气工业,2007,27(增刊A):134-136.]
[5]Liu Quanxin,Li Daoshan.Points about land static correctionand migration datum[J].Natural Gas Geoscience,2003,14(1):57-59.[刘全新,李道善.关于山地静校正和偏移基准面的一些认识[J].天然气地球科学,2003,14(1):57-59.]
[6]Fan Weihua,Yang Changchun,Sun Chuanwen,et al.Applica-tion of prestack time migration for three dimensional deismicdata[J].Progress in Geophtsics,2007,20(4):571-575.[樊卫花,杨长春,孙传文,等.三维地震资料叠前时间偏移应用研究[J].地球物理学进展,2007,20(4):571-575.]
[7]Su Qin,He Zhenhua,Tian Yancan,et al.Research and appli-cation of pre-stack depth migration method in piedmont com-plex structure imaging[J].Natural Gas Geoscience,2009,20(4):571-575.[苏勤,贺振华,田彦灿,等.山前带复杂构造成像中叠前深度偏移方法研究及应用[J].天然气地球科学,2009,20(4):571-575.]
[8]Zhou Chenguang,Shan Gang,Zhang Lihua.Application ofprestack time migration in north China area[J].Journal of Ji-lin University:Earth Science Edition,2006,36:55-57.[周晨光,单刚,张丽华.叠前时间偏移在华北地区的应用[J].吉林大学学报:地球科学版,2006,36:55-57.]
[9]Cao Yanjun,You Hongwen,Lin Yuying,et al.Prestack time mi-gration technology and its application[J].Fault-Block Oil&GasField,2004,11(5):21-22.[曹延军,游洪文,林玉英,等.叠前时间偏移技术及应用[J].断块油气田,2004,11(5):21-22.]
[10]Tian Yancan,Su Qin,Wang Xiaowei.Application of 3D pres-tack depth migration in CX gas field[J].Natural Gas Geosci-ence,2005,16(2):242-245.[田彦灿,苏勤,王小卫.三维叠前深度偏移在CX气田的应用[J].天然气地球科学,2005,16(2):242-245.]
[2]Xiong Zhu.Complex Seismic Data Processing Ideas[M].Bei-jing:Petroleum Industry Press,2002.[熊煮.复杂地区地震数据处理思路[M].北京:石油工业出版社,2002.]
[3]Luo Yinhe,Liu Jiangping,Dong Qiaoliang,et al.Kirchhoffcurved-ray prestack time migration and its application[J].Natural Gas Industry,2005,25(8):35-37.[罗银河,刘江平,董桥梁,等.Kirchhoff弯曲射线叠前时间偏移及应用[J].天然气工业,2005,25(8):35-37.]
[4]Huang Ling,Li Gang,Li Chunyu,et al.The application ofprestack migration technique in Jilin area[J].Natural Gas In-dustry,2007,27(supplement A):134-136.[黄棱,李刚,李春雨,等.叠前偏移处理技术在吉林探区的应用[J].天然气工业,2007,27(增刊A):134-136.]
[5]Liu Quanxin,Li Daoshan.Points about land static correctionand migration datum[J].Natural Gas Geoscience,2003,14(1):57-59.[刘全新,李道善.关于山地静校正和偏移基准面的一些认识[J].天然气地球科学,2003,14(1):57-59.]
[6]Fan Weihua,Yang Changchun,Sun Chuanwen,et al.Applica-tion of prestack time migration for three dimensional deismicdata[J].Progress in Geophtsics,2007,20(4):571-575.[樊卫花,杨长春,孙传文,等.三维地震资料叠前时间偏移应用研究[J].地球物理学进展,2007,20(4):571-575.]
[7]Su Qin,He Zhenhua,Tian Yancan,et al.Research and appli-cation of pre-stack depth migration method in piedmont com-plex structure imaging[J].Natural Gas Geoscience,2009,20(4):571-575.[苏勤,贺振华,田彦灿,等.山前带复杂构造成像中叠前深度偏移方法研究及应用[J].天然气地球科学,2009,20(4):571-575.]
[8]Zhou Chenguang,Shan Gang,Zhang Lihua.Application ofprestack time migration in north China area[J].Journal of Ji-lin University:Earth Science Edition,2006,36:55-57.[周晨光,单刚,张丽华.叠前时间偏移在华北地区的应用[J].吉林大学学报:地球科学版,2006,36:55-57.]
[9]Cao Yanjun,You Hongwen,Lin Yuying,et al.Prestack time mi-gration technology and its application[J].Fault-Block Oil&GasField,2004,11(5):21-22.[曹延军,游洪文,林玉英,等.叠前时间偏移技术及应用[J].断块油气田,2004,11(5):21-22.]
[10]Tian Yancan,Su Qin,Wang Xiaowei.Application of 3D pres-tack depth migration in CX gas field[J].Natural Gas Geosci-ence,2005,16(2):242-245.[田彦灿,苏勤,王小卫.三维叠前深度偏移在CX气田的应用[J].天然气地球科学,2005,16(2):242-245.]
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