井间地震观测系统设计实例分析
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摘要
垦71区块低序级断层组合关系不明、剩余油分布不清、油水关系复杂、储层较薄且多,纵、横向变化大。利用井间地震技术研究了该地区的低序级断层及储层特征。首先根据实施井间地震工区的地质模型建立速度模型,依据设计的观测系统进行正演模拟,模拟的波场反映了井间地震的主要波场特征,反射波成像剖面反映了地质模型的地质特征。基于正演模拟结果对观测系统进行优化,并进行野外采集,获得的实际资料的反射波成像剖面分辨率较高,落实了井间的低序级断层及薄储层。
Some problems exist in the development of Ken71 fault block, such as unclear combination relationship of low-level sequence faults,unknown distribution of remaining oil,complex oil-water relationship, thin and many reservoirs with large lateral and vertical variation.Therefore,crosswell seismic was utilized to study the characteristics of low-level sequence faults and reservoirs in the area. Firstly,velocity model was established by the geologic model of the area where crosswell seismic will be carried out.Then forward modeling was carried out by the designed geometry.The simulated wavefield reflects the main characteristics of crosswell seismic wavefield,and the imaging section of reflection wave reflects the characteristics of geologic model.The geometry was optimized based on the forward modeling results.Field acquisition was carried out and the obtained reflection imaging section of actual data has relatively high resolution.Finally,the characteristics of crosswell low-level sequence fault and thin layers have been identified.
Some problems exist in the development of Ken71 fault block, such as unclear combination relationship of low-level sequence faults,unknown distribution of remaining oil,complex oil-water relationship, thin and many reservoirs with large lateral and vertical variation.Therefore,crosswell seismic was utilized to study the characteristics of low-level sequence faults and reservoirs in the area. Firstly,velocity model was established by the geologic model of the area where crosswell seismic will be carried out.Then forward modeling was carried out by the designed geometry.The simulated wavefield reflects the main characteristics of crosswell seismic wavefield,and the imaging section of reflection wave reflects the characteristics of geologic model.The geometry was optimized based on the forward modeling results.Field acquisition was carried out and the obtained reflection imaging section of actual data has relatively high resolution.Finally,the characteristics of crosswell low-level sequence fault and thin layers have been identified.
引文
[1]赵群,郝守玲.井间地震观测系统的物理模型研究[J].石油物探,2004,43(3):298-300
[2]陈国金.井间观测系统的讨论[J].石油物探,996, 35(3):93-109
[3]曹辉,郭全仕,唐金良,等.井间地震资料特点分析[J].勘探地球物理进展,2006,29(5):312-317
[4]唐金良,曹辉,王立华,等.中值滤波在井间地震资料处理中的应用[J].石油物探,2005,44(1):47-50
[5]刘辛,居春荣,黄啸年,等.井间地震技术在黄珏油田开发中的初步应用[J].石油天然气学报,2005,27 (6):729-731
[6]毛中华,牟来勇,刘美丽,等.垦71井区井间地震数据采集方法[J].石油地球物理勘探,2008,43(增刊2):80-83
[7]王永刚,曹丹平,刘磊,等.井间地球物理资料的综合显示及其应用[J].石油物探,2004.,43(5):462-465
[8]曹辉.井间地震技术发展现状[J].勘探地球物理进展,2002,25(6):6-10
[9]李红立,潘冬明,徐红利.井地地震CT技术及其应用[J].煤田地质与勘探,2008,36(3):71-74
[10]李万万,裴正林.井间地震弹性波传播特征数值模拟[J].物探与化探,2008,32(2):207-211
[11]曹辉.井中地球物理技术综述[J].勘探地球物理进展,2004,27(4):235-240
[2]陈国金.井间观测系统的讨论[J].石油物探,996, 35(3):93-109
[3]曹辉,郭全仕,唐金良,等.井间地震资料特点分析[J].勘探地球物理进展,2006,29(5):312-317
[4]唐金良,曹辉,王立华,等.中值滤波在井间地震资料处理中的应用[J].石油物探,2005,44(1):47-50
[5]刘辛,居春荣,黄啸年,等.井间地震技术在黄珏油田开发中的初步应用[J].石油天然气学报,2005,27 (6):729-731
[6]毛中华,牟来勇,刘美丽,等.垦71井区井间地震数据采集方法[J].石油地球物理勘探,2008,43(增刊2):80-83
[7]王永刚,曹丹平,刘磊,等.井间地球物理资料的综合显示及其应用[J].石油物探,2004.,43(5):462-465
[8]曹辉.井间地震技术发展现状[J].勘探地球物理进展,2002,25(6):6-10
[9]李红立,潘冬明,徐红利.井地地震CT技术及其应用[J].煤田地质与勘探,2008,36(3):71-74
[10]李万万,裴正林.井间地震弹性波传播特征数值模拟[J].物探与化探,2008,32(2):207-211
[11]曹辉.井中地球物理技术综述[J].勘探地球物理进展,2004,27(4):235-240
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