沙特沙漠区地震采集方法技术研究
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摘要
沙特多为沙漠地形,地表多为沙丘、戈壁,近地表地质条件复杂,横向速度变化大,且面波、线性干扰、散射、绕射、沙丘引起的回响等干扰大。针对以上问题,通过对沙特几个项目施工进行采集技术研究和总结分析,从观测系统设计、可控震源参数优化和检波器组合优化来压制干扰提高信噪比,并就可控震源在沙漠地区高效采集前沿技术的发展进行了陈述。
Most terrain are desert in Saudi Arabia, and most of the surface are sand dunes and the gobi. Near surface complexgeological condition is very complicated, horizontal speed change is vast, and there are more interference waves includessurface wave, linear interference, scattering, diffraction, caused by sand dunes echoes of the interference, etc. Aimmingat these questions, technology research and analysis of seismic acquisition have been done on several projects. By geometry design, vibroseis parameters optimization and geophone strings combinatorial optimization, signal-to-noise isimproved and the noises are suppressed. The development of high efficient acquisition technology ofvibroseis in desertareas is described.
Most terrain are desert in Saudi Arabia, and most of the surface are sand dunes and the gobi. Near surface complexgeological condition is very complicated, horizontal speed change is vast, and there are more interference waves includessurface wave, linear interference, scattering, diffraction, caused by sand dunes echoes of the interference, etc. Aimmingat these questions, technology research and analysis of seismic acquisition have been done on several projects. By geometry design, vibroseis parameters optimization and geophone strings combinatorial optimization, signal-to-noise isimproved and the noises are suppressed. The development of high efficient acquisition technology ofvibroseis in desertareas is described.
引文
[1]李卫忠,Saleh A.Al-Maghlouth,Adnan Hashem等.鲁卜哈利盆地B区块近地表快速建模研究与应用[J].石油物探,2008,47(3)
[2]Gijs J.O.Ver meer.3-D Survey Design[M].GeophysicalReferences Series 12,2002
[3]李庆忠,魏继东.论检波器横向拉开组合的重要性[J].石油地球物理勘探,2008,43(4)
[4]Jack Bouska.Distance separated simultaneous sweeping:ef-ficient 3D Vibroseis acquisition in Oman[J].SEG Houston2009 International Exposition and Annual Meeting
[5]Dave Howe,Mark Foster,Tony Allen,et al.Independentsimultaneous sweeping-a method to increase the productivity ofland seismic crews[J].SEG Las Vegas 2008 Annual Meeting
[2]Gijs J.O.Ver meer.3-D Survey Design[M].GeophysicalReferences Series 12,2002
[3]李庆忠,魏继东.论检波器横向拉开组合的重要性[J].石油地球物理勘探,2008,43(4)
[4]Jack Bouska.Distance separated simultaneous sweeping:ef-ficient 3D Vibroseis acquisition in Oman[J].SEG Houston2009 International Exposition and Annual Meeting
[5]Dave Howe,Mark Foster,Tony Allen,et al.Independentsimultaneous sweeping-a method to increase the productivity ofland seismic crews[J].SEG Las Vegas 2008 Annual Meeting
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