提高川西海相地震勘探精度采集方法探讨
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摘要
由于川西地区海相地层埋藏深度较深,储层厚度较薄,目前采集资料分辨率无法满足勘探要求。这里总结了其它地区高精度勘探经验,展示了川西地区海相地层进行高精度勘探方法探索效果,包括激发、接收、观测系统方法试验效果,并结合该区的地震地质条件进行了吸收衰减分析,解释高精度勘探方法探索应用效果。通过方法探索和原因分析,得出了通过"小道距、高覆盖次数"的高精度地震勘探提高资料信噪比,从而提高川西海相地层勘探精度的结论,为今后川西地区海相地层地震勘探提供了借鉴经验。
The resolution of the gathers meteria does not meet the requirements of exploration in the western Sichuan region duo to deeper burial depth of marine strate and thinner of the reservoir thickness.The article summarizes experience of high-precision exploration experience in other regions and also shows the high-precision exploration methods for the marine strate of the western Sichuan region,including excitation,receiving,observing the effect of systematic approach to test.The exploration effect of the high-resolution exploration method is explained by combining with seismic geological conditions in the area of attenuation analysis.Our study indicate that high signal to noise data could be obtained by high-precision seismic exploration with high coverage and small channel spacing in the marine strate of the western Sichuan region.
The resolution of the gathers meteria does not meet the requirements of exploration in the western Sichuan region duo to deeper burial depth of marine strate and thinner of the reservoir thickness.The article summarizes experience of high-precision exploration experience in other regions and also shows the high-precision exploration methods for the marine strate of the western Sichuan region,including excitation,receiving,observing the effect of systematic approach to test.The exploration effect of the high-resolution exploration method is explained by combining with seismic geological conditions in the area of attenuation analysis.Our study indicate that high signal to noise data could be obtained by high-precision seismic exploration with high coverage and small channel spacing in the marine strate of the western Sichuan region.
引文
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[4]赵殿栋.高精度地震勘探技术发展回顾与展望[J].石油物探,2009(5):425.
[5]李庆忠.地震高分辨率勘探中的误区与对策[J].石油地球物理勘探,1997,32(4):751.
[6]郝召兵,秦静欣,伍向阳.地震波品质因子Q研究进展综述[J].石油地球物理学进展,2009,24(2):375.
[7]吕公河.高精度地震勘探采集技术探讨[J].石油地球物理勘探,2005,40(3):261.
[8]周希领,王颜领,方建明.深层地震勘探技术研究[J].内蒙古石油化工,2003,29(8):92.
[9]杨文采,于常青.深层油气地球物理勘探基础研究[J].地球物理勘探进展,2007,22(4):1238.
[10]王永刚,李振春,高洪海,等.增加深层下传能量的野外试验及理论分析[J].2001,36(2):231.
[2]李振春,王清振.地震波衰减机理及能量补偿研究综述[J].石油地球物理学进展,2005,22(4):1147.
[3]钱绍湖,高建华,谷永兴,等.地层吸收衰减模型的制作及补偿方法的研究[J].石油地球物理勘探,1998,(S1)1:18.
[4]赵殿栋.高精度地震勘探技术发展回顾与展望[J].石油物探,2009(5):425.
[5]李庆忠.地震高分辨率勘探中的误区与对策[J].石油地球物理勘探,1997,32(4):751.
[6]郝召兵,秦静欣,伍向阳.地震波品质因子Q研究进展综述[J].石油地球物理学进展,2009,24(2):375.
[7]吕公河.高精度地震勘探采集技术探讨[J].石油地球物理勘探,2005,40(3):261.
[8]周希领,王颜领,方建明.深层地震勘探技术研究[J].内蒙古石油化工,2003,29(8):92.
[9]杨文采,于常青.深层油气地球物理勘探基础研究[J].地球物理勘探进展,2007,22(4):1238.
[10]王永刚,李振春,高洪海,等.增加深层下传能量的野外试验及理论分析[J].2001,36(2):231.
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