复杂断块地区地震资料目标处理技术应用研究
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摘要
研究区块内某凹陷断裂系统十分复杂,构造破碎,圈闭面积小,火成岩发育广泛,地震资料以低信噪比为主,目的层地震资料分辨率较低。本文针对以上存在的问题,开展了目标性处理,在充分发挥各项处理技术优势的基础上,探索出一套实用的地震资料目标处理技术流程。实践证明,高分辨率拉冬变换能够有效衰减多次波,串联反褶积可用于深层高频能量补偿,各向异性叠前偏移技术能够精细刻画地下构造断裂特征,有效提高识别小断块的能力。该区复杂资料的目标处理成果有效地提高了地震剖面的质量,使弱反射目的层及小断块的成像效果得到明显改善。
Because of complex fracture system,faulted structures,and rich igneous rocks,the seismic data shows low signal-to-noise ratio and poor resolution in the study area.Aiming at resolving these problems,based on the fully used potentials of each processing technique,a set of practical target-oriented processing techniques is introduced in the paper.The practice proves that high resolution Radon transform can effectively attenuate multiples,cascaded deconvolution can be used in high-frequency energy compensation,anisotropy pre-stack time migration is able to accurately describe the structure fracture features,and improve the ability to identify the small fault block.The target-oriented processing techniques can effectively improve the quality of the seismic sections and improve the weak reflection layer and the small block imaging significantly.
Because of complex fracture system,faulted structures,and rich igneous rocks,the seismic data shows low signal-to-noise ratio and poor resolution in the study area.Aiming at resolving these problems,based on the fully used potentials of each processing technique,a set of practical target-oriented processing techniques is introduced in the paper.The practice proves that high resolution Radon transform can effectively attenuate multiples,cascaded deconvolution can be used in high-frequency energy compensation,anisotropy pre-stack time migration is able to accurately describe the structure fracture features,and improve the ability to identify the small fault block.The target-oriented processing techniques can effectively improve the quality of the seismic sections and improve the weak reflection layer and the small block imaging significantly.
引文
[1]梁尚勇,胡斌,季红军.苏北盆地复杂断块地区资料处理解释及效果[J].石油物探,2002,41(3):367-371
[2]刘建芳,华伟等.江苏低信噪比地区深层地震资料处理方法研究[J].石油物探,2008,47(6):583-587
[3]王世瑞,狄帮让等.地震数据目标处理技术在松辽南部的应用[J].石油地球物理勘探,2008,43(5):518-525
[4]张雪冰,李春红,孙淑春.深层火山岩目标处理技术在徐家围子地区的应用[J].大庆石油地质与开发,2009,28(6):328-331
[5]高银波,徐右平,梁宏.复杂断块叠前时间偏移技术应用实例[J].物探化探计算技术,2010,32(4):365-370.
[6]秦亚玲,王彦春,秦广胜等.各向异性叠前时间偏移——以东濮凹陷为例[J].地球物理学进展,2010,25(3):926-931
[7]刘彦,Chenyun,王者顺TI介质各向异性速度多参数分析[J].地球物理学进展,2005,20(2):540-544
[8]王建民,王元波等.高分辨率处理技术在松辽盆地中、浅层岩性油藏勘探中的应用[J].大庆石油地质与开发,2004,23(5):107-109
[9]王西文,高建虎,刘伟方等.复杂地区地震勘探实践[M].北京:石油工业出版社,2010:100-102
[10]李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993:80-94
[2]刘建芳,华伟等.江苏低信噪比地区深层地震资料处理方法研究[J].石油物探,2008,47(6):583-587
[3]王世瑞,狄帮让等.地震数据目标处理技术在松辽南部的应用[J].石油地球物理勘探,2008,43(5):518-525
[4]张雪冰,李春红,孙淑春.深层火山岩目标处理技术在徐家围子地区的应用[J].大庆石油地质与开发,2009,28(6):328-331
[5]高银波,徐右平,梁宏.复杂断块叠前时间偏移技术应用实例[J].物探化探计算技术,2010,32(4):365-370.
[6]秦亚玲,王彦春,秦广胜等.各向异性叠前时间偏移——以东濮凹陷为例[J].地球物理学进展,2010,25(3):926-931
[7]刘彦,Chenyun,王者顺TI介质各向异性速度多参数分析[J].地球物理学进展,2005,20(2):540-544
[8]王建民,王元波等.高分辨率处理技术在松辽盆地中、浅层岩性油藏勘探中的应用[J].大庆石油地质与开发,2004,23(5):107-109
[9]王西文,高建虎,刘伟方等.复杂地区地震勘探实践[M].北京:石油工业出版社,2010:100-102
[10]李庆忠.走向精确勘探的道路[M].北京:石油工业出版社,1993:80-94
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