山地Walk-away VSP技术研究及应用
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摘要
针对山地Walk-away VSP资料采集、处理的特点,从优化采集参数、中高频静校正,速度模型建立及其合理性评价、波场分离、叠前偏移成像等几个方面进行了研究,建立了一套资料采集、处理方法。通过对LG2井的Walk-awayVSP资料采集、处理和解释,获得了高质量的井旁成像剖面,准确标定了储层的位置,落实了礁滩的形态及大小,精细刻画了礁体内部的细节,表明文中所使用的山地Walk-awayVSP资料采集、处理解释技术可行,具备良好的推广应用前景。
In this paper,aiming at the data acquisition and processing characteristics of mountanious Walk-away VSP technique,the following aspects have been studied,such as optimizing acquisition parameter,medium and high frequency static correction,velocity model establishment and its reasonable evaluation,wavefield separation and prestack migration imaging.A set of data acquisition and processing methods is established.Through the Walk-away VSP data acquisition,processing and interpretation of LG2 well,high quality well-side imaging profile is gained,and the location of reservoir is demarcated exactly,the forms and sizes of reefs are ascertained,interior details of reefs are depicted subtly.It is showed that the mountanious Walk-away VSP data acquisition,processing and interpretation technology used in this paper is feasible and has good popularization and application foreground.
In this paper,aiming at the data acquisition and processing characteristics of mountanious Walk-away VSP technique,the following aspects have been studied,such as optimizing acquisition parameter,medium and high frequency static correction,velocity model establishment and its reasonable evaluation,wavefield separation and prestack migration imaging.A set of data acquisition and processing methods is established.Through the Walk-away VSP data acquisition,processing and interpretation of LG2 well,high quality well-side imaging profile is gained,and the location of reservoir is demarcated exactly,the forms and sizes of reefs are ascertained,interior details of reefs are depicted subtly.It is showed that the mountanious Walk-away VSP data acquisition,processing and interpretation technology used in this paper is feasible and has good popularization and application foreground.
引文
[1]Brian E.Hornby,Jiahua Yu,VSP:beyond time-to depth.The Leading edge[J],April,2006.
[2]John Brien,Ron Harris,Multi-component VSP imaging of tight-gas sands.GEOPHYSICS,2006,71(6).
[3]Vladimir Grechka,Albena Mateeva.Inversion of P-wave VSP data for local anisotropy:Theory and case study[J].Geophysics,2007,72(4).
[4]Emil Blias.The use of VSP techniques for fault zone characterization:An example from the San Andreas Fault[J].The Leading Edge,2007,26(6).
[5]Chavarria J.Andres,Alex Goertz,Martin Karrenbach.Estimation of seismic anisotropy from P-wave VSP data[J].The Leading Edge,2007,26(6).
[6]严又生,宜明理,等,三维三分量数据处理方法及效果[J].石油地球物理勘探,2005,40(1).
[7]朱光明.垂直地震剖面方法[M].北京:石油工业出版社,1988年.
[8]万奎,肖富森,邵勇,等.多方位VSP技术在川东寨沟3井目标选择论证中的应用[J].天然气工业,2006,26(7).
[9]曹立斌,等.三分量VSP资料在裂缝检测中的应用[J].石油物探,2008,1(13).
[2]John Brien,Ron Harris,Multi-component VSP imaging of tight-gas sands.GEOPHYSICS,2006,71(6).
[3]Vladimir Grechka,Albena Mateeva.Inversion of P-wave VSP data for local anisotropy:Theory and case study[J].Geophysics,2007,72(4).
[4]Emil Blias.The use of VSP techniques for fault zone characterization:An example from the San Andreas Fault[J].The Leading Edge,2007,26(6).
[5]Chavarria J.Andres,Alex Goertz,Martin Karrenbach.Estimation of seismic anisotropy from P-wave VSP data[J].The Leading Edge,2007,26(6).
[6]严又生,宜明理,等,三维三分量数据处理方法及效果[J].石油地球物理勘探,2005,40(1).
[7]朱光明.垂直地震剖面方法[M].北京:石油工业出版社,1988年.
[8]万奎,肖富森,邵勇,等.多方位VSP技术在川东寨沟3井目标选择论证中的应用[J].天然气工业,2006,26(7).
[9]曹立斌,等.三分量VSP资料在裂缝检测中的应用[J].石油物探,2008,1(13).
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