地震反演——煤田地震勘探的新进展
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摘要
地震反演根据数据来源、信息类型、反演结果及实现方法可划分不同种类,地震反演的基本方法可分为基于波动方程的反演和以地震褶积模型为基础的反演二大类。目前国内建立在地震记录褶积模型基础的主要反演软件有STRATA、JASONI、SIS。依托国家重大产业技术开发专项"西部煤炭资源高精度三维地震勘探技术,"在阳泉二矿7个钻孔中,应用STRATA和JASON软件对其三维地震资料进行波阻抗反演,其结果不仅可提高纵向分辨率,准确界定煤层顶、底板,提高下组弱反射煤层的连续性,而且通过波阻抗切片,可获得煤层及顶板的岩性信息。另外通过对比STRATA和JASON软件,发现前者的分辨率较高,而后者在波形连续性表现较好。
According to data source,information type,inversion result and implementation method,the seismic inversion can be divided into two accordingly based on wave equation inversion and seismic convolution model kinds.At present,main based on seismic record convolution model software have STRATA,JASON and ISIS.Rely on the state major industrial technological development special project "Western China Coal Resource High Precision 3D Seismic Prospecting Technology",in 7 boreholes in Yangquan No.2 coalmine,the STRATA and JASON have used in 3D seismic data natural impedance inversion,The results not only can improve longitudinal resolution,define coal roof and floor with accuracy,improve lower coal group coal reflection wave continuity,but also obtain lithologic information of coal seams and roofs.Besides,through contrast of STRATA and JASON found that the former has higher resolution,while the later has better exhibition on waveform continuity.
According to data source,information type,inversion result and implementation method,the seismic inversion can be divided into two accordingly based on wave equation inversion and seismic convolution model kinds.At present,main based on seismic record convolution model software have STRATA,JASON and ISIS.Rely on the state major industrial technological development special project "Western China Coal Resource High Precision 3D Seismic Prospecting Technology",in 7 boreholes in Yangquan No.2 coalmine,the STRATA and JASON have used in 3D seismic data natural impedance inversion,The results not only can improve longitudinal resolution,define coal roof and floor with accuracy,improve lower coal group coal reflection wave continuity,but also obtain lithologic information of coal seams and roofs.Besides,through contrast of STRATA and JASON found that the former has higher resolution,while the later has better exhibition on waveform continuity.
引文
[1]李庆忠.走向精确勘探的道路—高分辨率地震勘探系统工程剖析[M].北京:石油工业出版社.1993.
[2]姚姚,詹正彬,钱绍湖.地震勘探新技术与新方法[M].武汉:中国地质大学出版社,1991.
[3]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探.2002,41(4):385-390.
[4]姚逢昌,甘利灯.地震反演的应用与限制.石油勘探与开发[J].2000,27(2).
[5]王延光.储层地震反演方法以及应用中的关键问题对策[J].石油物探.2002,41(3):299-303.
[6]高少武,蔡加铭,赵波,等.地震和测井联合反演储层波阻抗技术[J].石油物探.2002,41(3):279-283.
[7]沈财余,江洁,赵华,等.测井约束地震反演解决地质问题能力的探讨[J].石油地球物理勘探.2002,37(4).
[8]Gislain B Madiba,George A.McMechan.Seismic impedance inversion and interpretation of a gas carbonate reservoir in the Alberta Foothills,Western Canada[J].Geophysics.2003,68(5):1460-1469.
[9]Yanghua Wang.Sparseness-constrained least-squares inversion:Application to seismic wave reconstruction[J].Geophysics.2003,68(5):1633-1638.
[10]Adam P Koesoemadinata,George A McMechan.Petro-seismic inversion for sandstone properties[J].Geophysics.2003,68(5):1611-1625.
[2]姚姚,詹正彬,钱绍湖.地震勘探新技术与新方法[M].武汉:中国地质大学出版社,1991.
[3]张永刚.地震波阻抗反演技术的现状和发展[J].石油物探.2002,41(4):385-390.
[4]姚逢昌,甘利灯.地震反演的应用与限制.石油勘探与开发[J].2000,27(2).
[5]王延光.储层地震反演方法以及应用中的关键问题对策[J].石油物探.2002,41(3):299-303.
[6]高少武,蔡加铭,赵波,等.地震和测井联合反演储层波阻抗技术[J].石油物探.2002,41(3):279-283.
[7]沈财余,江洁,赵华,等.测井约束地震反演解决地质问题能力的探讨[J].石油地球物理勘探.2002,37(4).
[8]Gislain B Madiba,George A.McMechan.Seismic impedance inversion and interpretation of a gas carbonate reservoir in the Alberta Foothills,Western Canada[J].Geophysics.2003,68(5):1460-1469.
[9]Yanghua Wang.Sparseness-constrained least-squares inversion:Application to seismic wave reconstruction[J].Geophysics.2003,68(5):1633-1638.
[10]Adam P Koesoemadinata,George A McMechan.Petro-seismic inversion for sandstone properties[J].Geophysics.2003,68(5):1611-1625.
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