利用海水平均声速进行海洋分布式垂直缆姿态校正
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摘要
垂直缆地震采集方法能够获得高信噪比、宽频带、宽方位角的地下结构的反射资料,进而实现目标区域的高精度成像。垂直缆姿态的准确获得是高质量地震资料解编的必要前提。利用初至采样点差值与震源激发采样点差值的相关匹配方法,得到共检波点道集。依据超短基线测得的位置参数,得到垂直缆的初始姿态模型,结合海水平均声速的估算值,校正垂直缆的姿态以及确定倾斜角度范围,为垂直缆地震数据的后续处理工作提供支持。
The seismic acquisition method with vertical cable may acquire the reflection from the underground structure of the area with high signal-to-noise ratio,wide frequency band and wide azimuth angle,thereby realizing high-precision imaging of the target area.The accurate acquisition of the vertical cable attitude is a necessary prerequisite for the deconstruction of high quality seismic data.The common detection wave point gather is obtained by using the correlation matching method of first-break sampling point difference and the source excitation sampling point difference.According to the position parameters measured by the ultra-short baseline,the initial attitude model of the vertical cable is obtained.Combined with the estimated average acoustic velocity of seawater,the attitude of the vertical cable is corrected and the range of the tilt angle is determined to support the subsequent processing of the vertical cable seismic data.
The seismic acquisition method with vertical cable may acquire the reflection from the underground structure of the area with high signal-to-noise ratio,wide frequency band and wide azimuth angle,thereby realizing high-precision imaging of the target area.The accurate acquisition of the vertical cable attitude is a necessary prerequisite for the deconstruction of high quality seismic data.The common detection wave point gather is obtained by using the correlation matching method of first-break sampling point difference and the source excitation sampling point difference.According to the position parameters measured by the ultra-short baseline,the initial attitude model of the vertical cable is obtained.Combined with the estimated average acoustic velocity of seawater,the attitude of the vertical cable is corrected and the range of the tilt angle is determined to support the subsequent processing of the vertical cable seismic data.
引文
[1]张茗,刘怀山.天然气水合物立体观测系统分析[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十一)——地球物理应用前沿.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2015.
[2]Asakawa E,Sekino Y,Okamoto T,et al.Development of Vertical Cable Seismic System for Hydrothermal Deposit Survey[J].Egu General Assembly,2010,64(4):1993.
[3]Krail P M.Vertical cable as a subsalt imaging tool[J].Leading Edge,1994,13(8):885-887.
[4]Krail P M.Vertical Cable Marine Seismic Acquisition[C]∥Proceedings of Offshore Technology Conference.Houston:Texas Offshore Technology Conference,1997,1(29):347-355.
[5]Rodriguez-Suarez C,Stewart R R.Survey design for vertical cable seismic acquisition[J].International Congress of the Brazilian Geophysical Society,1999,10(6):1-19.
[6]Rodriguez-Suarez C,Bancroft J C,Xu Y,et al.3-D vertical cable processing using EOM[R].CREWES Research Report,1999:1-11.
[7]Wang H,Macbeth C,Li X Y.Separation of up and downgoing wave fields in vertical cable seismic[C].61st EAGEConference and Exhibition,1999.
[8]Wang H.The impact of multiple suppression on vertical cable data imaging[J].Seg Technical Program Expanded Abstracts,2000,19(1):2484.
[9]Wang H.Seismic Imaging and Anisotropic Inversion using Vertical Cable Data[D].Edingburgh:University of Edingburgh,2003.
[10]Amundsen L,Westerdahl H,Thompson M,et al.Multicomponent ocean bottom and vertical cable seismic acquisition for wavefield reconstruction[J].Geophysics,2010,75(6):WB87-WB94.
[11]Ikelle L T.Attenuating primaries and free-surface multiples of vertical cable(VC)data while preserving receiver ghosts of primaries[J].Geophysics,2012,66(3):9.
[12]Ikelle L T,Yoo S.An optimization of the inverse scattering multiple attenuation method for OBS and VC data[J].Geophysics,2002,67(4):1293-1303.
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[14]王祥春,赵庆献,伍忠良.海洋垂直缆地震勘探技术[N].中国矿业报,2018-09-28(008).
[15]陈晨,黄建宇,伍忠良.海洋垂直缆系统水听器对比测试与分析[J].电子技术,2018,47(3):1-4.
[16]陈晨,黄建宇,伍忠良.天然气水合物垂直缆地震系统设计与试验[J].电子技术,2018,47(2):34-37+33.
[17]黄建宇,伍忠良,王伟巍,等.天然气水合物垂直缆地震系统关键技术与试验[J].新能源进展,2016,4(3):219-224.
[18]何勇,张建中.海洋地震垂直缆观测系统的射线照明分析[J].CT理论与应用研究,2015,24(5):689-700.
[19]安振芳,张进,张建中.海洋三维VC观测系统优化设计[J].吉林大学学报(地球科学版),2018,48(1):271-284.
[20]吴树梁,刘怀山,王春霖.基于混合Radon变换在海洋垂直缆资料的噪声压制[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十三)——军民融合与地球物理.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2017:5.
[21]邸泽鹏,童思友,孙传禧.基于网格自动搜索拟合曲面法垂直缆初至波二次定位[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十二)——地球物理与信息感知.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2016:4.
[22]刘建国,刘怀山.天然气水合物赋存区立体观测正演模拟研究[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十一)——地球物理应用前沿.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2015:5.
[2]Asakawa E,Sekino Y,Okamoto T,et al.Development of Vertical Cable Seismic System for Hydrothermal Deposit Survey[J].Egu General Assembly,2010,64(4):1993.
[3]Krail P M.Vertical cable as a subsalt imaging tool[J].Leading Edge,1994,13(8):885-887.
[4]Krail P M.Vertical Cable Marine Seismic Acquisition[C]∥Proceedings of Offshore Technology Conference.Houston:Texas Offshore Technology Conference,1997,1(29):347-355.
[5]Rodriguez-Suarez C,Stewart R R.Survey design for vertical cable seismic acquisition[J].International Congress of the Brazilian Geophysical Society,1999,10(6):1-19.
[6]Rodriguez-Suarez C,Bancroft J C,Xu Y,et al.3-D vertical cable processing using EOM[R].CREWES Research Report,1999:1-11.
[7]Wang H,Macbeth C,Li X Y.Separation of up and downgoing wave fields in vertical cable seismic[C].61st EAGEConference and Exhibition,1999.
[8]Wang H.The impact of multiple suppression on vertical cable data imaging[J].Seg Technical Program Expanded Abstracts,2000,19(1):2484.
[9]Wang H.Seismic Imaging and Anisotropic Inversion using Vertical Cable Data[D].Edingburgh:University of Edingburgh,2003.
[10]Amundsen L,Westerdahl H,Thompson M,et al.Multicomponent ocean bottom and vertical cable seismic acquisition for wavefield reconstruction[J].Geophysics,2010,75(6):WB87-WB94.
[11]Ikelle L T.Attenuating primaries and free-surface multiples of vertical cable(VC)data while preserving receiver ghosts of primaries[J].Geophysics,2012,66(3):9.
[12]Ikelle L T,Yoo S.An optimization of the inverse scattering multiple attenuation method for OBS and VC data[J].Geophysics,2002,67(4):1293-1303.
[13]Wilson R J.Potential impacts of vertical cable seismic:modeling,resolution and multiple attenuation[D].Texas,USA:Texas A&M University,2002.
[14]王祥春,赵庆献,伍忠良.海洋垂直缆地震勘探技术[N].中国矿业报,2018-09-28(008).
[15]陈晨,黄建宇,伍忠良.海洋垂直缆系统水听器对比测试与分析[J].电子技术,2018,47(3):1-4.
[16]陈晨,黄建宇,伍忠良.天然气水合物垂直缆地震系统设计与试验[J].电子技术,2018,47(2):34-37+33.
[17]黄建宇,伍忠良,王伟巍,等.天然气水合物垂直缆地震系统关键技术与试验[J].新能源进展,2016,4(3):219-224.
[18]何勇,张建中.海洋地震垂直缆观测系统的射线照明分析[J].CT理论与应用研究,2015,24(5):689-700.
[19]安振芳,张进,张建中.海洋三维VC观测系统优化设计[J].吉林大学学报(地球科学版),2018,48(1):271-284.
[20]吴树梁,刘怀山,王春霖.基于混合Radon变换在海洋垂直缆资料的噪声压制[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十三)——军民融合与地球物理.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2017:5.
[21]邸泽鹏,童思友,孙传禧.基于网格自动搜索拟合曲面法垂直缆初至波二次定位[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十二)——地球物理与信息感知.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2016:4.
[22]刘建国,刘怀山.天然气水合物赋存区立体观测正演模拟研究[M]∥中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会.国家安全地球物理丛书(十一)——地球物理应用前沿.中国地球物理学会国家安全地球物理专业委员会、陕西省地球物理学会军事地球物理专业委员会:中国地球物理学会,2015:5.