塔中围斜区连片精细速度建模与变速成图
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摘要
塔中围斜区断裂构造复杂,构造形态难以落实。由于数据采集年代、施工参数、处理方法、野外地震和地质条件等方面的差异,连片整体速度研究及构造成图是研究该地区构造形态的关键。针对整体构造评价薄弱的问题及勘探部署难以决策的迫切需求,研究了塔中围斜区八个区块连片精细速度建模及变速成图技术。通过速度基准面统一技术、速度闭合差分析校正技术和基于解释层位框架控制的速度去噪技术的研究,获得了塔中八连片整体速度模型及各地震反射层整体构造图。
The faulted structures in Tazhong area is complex,which makes it hard to ascertain the shape of structures.Because of the difference on acquisition time,parameters,processing methods,seismic and geologic conditions,the problem is still unsolved for piecing velocity modeling and structure mapping.Aiming at the poor whole structure evaluation and difficulty in exploration deployment,the detailed velocity modeling and velocity-variable structure mapping of eight-piecing processing in Tazhong area has been probed.Based on the study of velocity datum unified technique,velocity closure analysis and correction technique,and velocity de-noise technique controlled by interpreted layer framework,the whole velocity model of eight-piecing area has been achieved,as well as the whole structure map of every reflections.
The faulted structures in Tazhong area is complex,which makes it hard to ascertain the shape of structures.Because of the difference on acquisition time,parameters,processing methods,seismic and geologic conditions,the problem is still unsolved for piecing velocity modeling and structure mapping.Aiming at the poor whole structure evaluation and difficulty in exploration deployment,the detailed velocity modeling and velocity-variable structure mapping of eight-piecing processing in Tazhong area has been probed.Based on the study of velocity datum unified technique,velocity closure analysis and correction technique,and velocity de-noise technique controlled by interpreted layer framework,the whole velocity model of eight-piecing area has been achieved,as well as the whole structure map of every reflections.
引文
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[14]赵鹏大.地质勘探中的统计分析[M].武汉:中国地质大学出版社,1990:1-288
[2]Causse E.Seismic traveltime approximations with high accuracy at all offsets[J].Expanded Abstracts of 72~(nd) Annual Internat SEG Mtg,2002,2325-2328
[3]杨军,王永刚,杨彦敏,等.阿尔及利亚416a—417区块构造精细成图方法[J].石油物探,2007,46(3): 294-301
[4]Koren Z,Ravve I.Constrained velocity inversion[J]. Expanded Abstracts of 75~(th) Annual Internat SEG Mtg,2005,2289-2292
[5]潘宏勋,孙开峰,叶勇.地震速度分析技术新进展[J].勘探地球物理进展,2008,31(3):172-177
[6]何际平,鲁烈琴,王红旗,等.复杂地区速度场建立与变速构造成图方法研究[J].地球物理学进展,2006, 26(2):167-172
[7]马海珍,雍学善,杨午阳,等.地震速度场建立与变速构造成图的一种方法[J].石油地球物理勘探,2002, 37(1):53-59
[8]宋桂桥,尹天奎,刘连升,等.关于塔中大沙漠区低速带调查重新定位的思考[J].石油物探,2008,47(4): 372-375
[9]王振国,陈小宏,王学军,等.沙漠地区老地震资料的处理技术及效果分析[J].勘探地球物理进展,2007, 30(2):123-129
[10]吴琼,杨长春,张文忠,等.过渡带拼接地震资料处理方法研究[J].地球物理学进展,2008,23(3): 761-767
[11]叶勇.三维约束Dix反演层速度方法及其应用研究[J].石油地球物理勘探,2008,43(4):443-446
[12]叶勇,孙开峰.密点速度分析技术在塔河油田西南部低幅构造中的应用[J].地球物理学进展,2008,23 (1):124-128
[13]孙开峰,叶勇.泛克里格法在三维地震资料变速成图中的应用[J].石油物探,1998,37(2):112-117
[14]赵鹏大.地质勘探中的统计分析[M].武汉:中国地质大学出版社,1990:1-288
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