叠前时间偏移在采区三维地震老资料重新处理解释中的应用
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摘要
受技术条件限制,以往采区地震资料多采用叠后时间偏移处理方法。实践证明该方法在地层倾角大、断层发育等地质条件复杂地区,很难准确成像。采用Kirchhoff叠前时间偏移的方法,合理配置参数,可以有效解决速度横向变化不大但倾角变化剧烈条件下三维地震成像精度低的问题。通过对淮北某矿区三维地震老资料应用叠前时间偏移处理结果表明:经过叠前时间偏移处理得到的数据体,其反射波特征明晰,经解释修正原断层7条、否定原断层2条、新发现断层4条,其中修正后的DF3断层已得到矿方的揭露验证,地震解释的断层性质、空间位置与实际揭露情况吻合良好。
Limited by technical conditions,previous winning district seismic data processing mostly uses poststack time migration.Practices have shown that the method used in complicated geological condition areas with high strata dip angle,developed faults etc.can hardly to get accurate images.Using Kirchhoff prestack time migration with reasonable parameter configuration can effectively resolve low accuracy of 3D seismic imaging under not large transverse velocity changing but abrupt dip angle variation conditions.The prestack time migration processed result of old 3D seismic data from a Huaibei mine area has shown that the data volume after prestack time migration processing has shown clear reflection characteristics.After interpretation,corrected 7 original interpreted faults,2 denied,4 newly found,in which,the corrected DF3 has revealed and validated by the coalmine side.The seismic data interpreted fault characters and spatial location can commendably accord with practically revealed.
Limited by technical conditions,previous winning district seismic data processing mostly uses poststack time migration.Practices have shown that the method used in complicated geological condition areas with high strata dip angle,developed faults etc.can hardly to get accurate images.Using Kirchhoff prestack time migration with reasonable parameter configuration can effectively resolve low accuracy of 3D seismic imaging under not large transverse velocity changing but abrupt dip angle variation conditions.The prestack time migration processed result of old 3D seismic data from a Huaibei mine area has shown that the data volume after prestack time migration processing has shown clear reflection characteristics.After interpretation,corrected 7 original interpreted faults,2 denied,4 newly found,in which,the corrected DF3 has revealed and validated by the coalmine side.The seismic data interpreted fault characters and spatial location can commendably accord with practically revealed.
引文
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[15]张胤斌,潘冬明,胡明顺,等.复杂地表初至层析地震静校正技术及其应用[J].煤田地质与勘探,2012,8(4):65-70.ZHANG Yinbin,PAN Dongming,HU Mingshun,LI Yongming,LI Juanjuan,Research and application of first arrival tomographic static technique in complex surface area[J].Goal Geology&Exploration,2012,8(4):65-70.
[16]冷广升,陈加林,王秀荣,等.叠前时间偏移方法在煤田勘探中的应用[J].中国煤炭地质,2008,20(6).
[17]李刚.煤矿采区三维地震叠前时间偏移处理技术研究[J].中国煤炭地质,2011,23(1).
[18]金秀芹,孙培林.叠前时间偏移在八宝矿区的应用[J].中国煤炭地质,2009,21(6).
[19]冯世民,冯鑫,李雅玲.地震资料叠前时间偏移处理在徐庄煤矿西部采区的应用[J].中国煤炭地质,2009,21(1).
[20]汤红伟.煤矿采区三维地震叠前深度偏移技术研究[J].中国煤炭地质,2011,23(19).
[21]王秀荣.叠前时间偏移技术在煤田地震资料处理中的应用[J].中国煤炭地质,2006,18(5).
[2]马在田.三维地震勘探数据处理的问题及其解决方法[J].地球物理学报,1988,31(1):99-107.Ma Z T.On the problems of 3D seismic data processing[J].Chines eJournal of Geophysics,1988,31(1):99-107.
[3]王建青.叠前时间偏移技术在潞安矿区的应用[J].中国煤炭地质,2008,20(6).
[4]张颖.三维地震叠前时间偏移处理技术应用与展望[J].石油勘探与开发,2006,33(5):536-541.Zhang Y.Application and prospect of 3D seismic prestack time migration processing technique[J].Petroleum Exploration and Development,2006,33(5):536-541.
[5]马丽娟,郑和荣,陈霞.隐蔽油气藏地震预测技术研究新进展[J].地球物理学进展,2007,22(1):294-300.Ma L J,Zheng H R,Chen X.The new progress of seismic forecast technology of subtle traps[J].Progress in Geophysics,2007,22(1):294-300.
[6]樊卫花,杨长春,等.三维地震资料叠前时间偏移应用研究[J].地球物理学进展,2007,22(3):836-842.Fan W H,Yang C C,etal.Application of prestack time migration for three dimensional seismic data[J].Progress in Geophysics,2007,22(3):836~842.
[7]李素华,王云专,范兴才,等.模型正演技术在兴城地区叠前深度偏移中的应用[J].地球物理学进展,2008,23(4):1216-1222.Li S H,Wang Y Z,Fan X C,etal.Application of forward modeling technique prestack depth migration in Xingcheng area[J].Progress in Geophysics,2008,23(4):1216-1222.
[8]陈新荣.叠前时间偏移成像质量影响因素探讨[J].油气地球物理,2007,3(5),40-44.Chen X R.Discussion on influencing factors of PSTM imaging quality[J].Petroleum Geophysics,2007,3(5),40-44.
[9]王锡文,秦广胜,刘向东,等.叠前偏移技术在中原复杂断块区的应用[J].地球物理学进展,2005,20(4):1092-1098.Wang X W,Qin G S,Liu X D,etal.The application of prestack migration technique in complex Fault blocks of Zhong yuan oilfield[J].Progress in Geophysics(inChinese),2005,20(4):1092-1098.
[10]张丽艳,刘洋.转换波叠前时间偏移方法综述[J].地球物理学进展,2005,20(4):1134-1139.
[11]陈志德,刘振宽,李成斌.三维叠前深度偏移速度分析及蒙卡洛自动层速度拾取[J].地球物理学报,2002,45(2):246-254.Chen Z D,Liu Z K,Li C B.3D Prestack depth migration velocity analysis and automatic montecarlo velocity picking in depth[J].Chinese Journal of Geophysics,2002,45(2):246-254.
[12]孟凡冰,等.叠前时间偏移在三维连片处理中的应用实例[J].勘探地球物理进展,2003,26(3):211-215.Meng F B,etal.Application of prestack time migration in data processing for piecing to gether various 3D data sets[J].Progress in Exploration Geophysics,2003,26(3):211-215.
[13]杨长春,刘兴材,等.地震叠前深度偏移方法流程及应用[J].地球物理学报,1996,39(3):409-415.Yang C C,Liu X C,etal.A methodology for seismic prestack depth migration[J].Chinese Journal of Geophysics,1996,39(3):409-415.
[14]武磊彬,徐奭.叠前时间偏移技术在淮北某煤矿采区三维地震勘探中的应用与效果[J].地球物理学进展,2007,2(1):0001-0008.WU Lei-bin,XU Shi,Applied Effect of Prestack Time Migration Technology in A Coal Mine 3D Seismic Exploration in HuaiBei[J].PROGRESS IN GEOPHYSICS,2007,2(1):0001-0008.
[15]张胤斌,潘冬明,胡明顺,等.复杂地表初至层析地震静校正技术及其应用[J].煤田地质与勘探,2012,8(4):65-70.ZHANG Yinbin,PAN Dongming,HU Mingshun,LI Yongming,LI Juanjuan,Research and application of first arrival tomographic static technique in complex surface area[J].Goal Geology&Exploration,2012,8(4):65-70.
[16]冷广升,陈加林,王秀荣,等.叠前时间偏移方法在煤田勘探中的应用[J].中国煤炭地质,2008,20(6).
[17]李刚.煤矿采区三维地震叠前时间偏移处理技术研究[J].中国煤炭地质,2011,23(1).
[18]金秀芹,孙培林.叠前时间偏移在八宝矿区的应用[J].中国煤炭地质,2009,21(6).
[19]冯世民,冯鑫,李雅玲.地震资料叠前时间偏移处理在徐庄煤矿西部采区的应用[J].中国煤炭地质,2009,21(1).
[20]汤红伟.煤矿采区三维地震叠前深度偏移技术研究[J].中国煤炭地质,2011,23(19).
[21]王秀荣.叠前时间偏移技术在煤田地震资料处理中的应用[J].中国煤炭地质,2006,18(5).
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