OVT处理技术在自贡页岩气勘探中的应用
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摘要
OVT处理技术是一种新的分方位处理技术。该技术能够有效地处理宽方位三维地震数据、提取叠前各向异性地震信息、对数据的各向异性误差进行校正。本文介绍了该技术在自贡地区M工区页岩气三维地震数据处理中的应用流程和结果,取得了较好的处理效果,获得了全工区的各向异性参数,证明了GeoEast系统OVT处理技术在页岩气勘探中的价值。
The offset vector tile(OVT)is an entirely new prestack data arrangement means.The azimuthal anisotropy of seismic data is more evident when seismic data is sorted into the OVT domain.With data processing tools provided by GeoEast System,wide-azimuth seismic data in Zigong,Sichuan are processed into the OVT domain for the shale gas exploration.The anisotropy of the whole survey is obtained,which proves correctness and effectiveness of the OVT processing tools in the shale gas exploration.
The offset vector tile(OVT)is an entirely new prestack data arrangement means.The azimuthal anisotropy of seismic data is more evident when seismic data is sorted into the OVT domain.With data processing tools provided by GeoEast System,wide-azimuth seismic data in Zigong,Sichuan are processed into the OVT domain for the shale gas exploration.The anisotropy of the whole survey is obtained,which proves correctness and effectiveness of the OVT processing tools in the shale gas exploration.
引文
[1] 张保庆,周辉,左黄金,等.宽方位地震资料处理技术及应用效果[J].石油地球物理勘探,2011,46(3):396-400.ZHANG Baoqing,ZHOU Hui,ZUO Huangjin,et al.Wide-azimuth data seismic processing techniques and their applications[J].Oil Geophysical Prospecting,2011,46(3):396-400.
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[5] Jenner E,Williams M,Davis T.A new method for azimuthal velocity analysis and application to a 3D survey,Weyburn field,Saskatchewan,Canada[C].SEG Technical Program Expanded Abstracts,2001,20:102-105.
[6] Williams M,Jenner E.How important is effect of azimuth anisotropy in 3-D seismic data? Enhancing data quality and extending the potential of the 3-D interpretation[C].SEG Technical Program Expanded Abstracts,2001,20:126-128.
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[8] 印兴耀,张洪学,宗兆云.OVT数据域五维地震资料解释技术研究现状与进展[J].石油物探,2018,57(2):155-178.YIN Xingyao,ZHANG Hongxue,ZONG Zhaoyun.Research status and progress of 5D seismic data interpretation in OVT domain[J].Geophysical Prospecting for Petroleum,2018,57(2):155-178.
[9] 段文胜,李飞,王彦春,等.面向宽方位地震处理的炮检距向量片技术[J].石油物探,2013,48(2):206-213.Duan Wensheng,LI Fei,Wang Yanchun,et al.Offset vector tile for wide-azimuth seismic processing[J].Oil Geophysical Prospecting,2013,48(2):206-213.
[10] 段文胜,李飞,李世吉,等.OVT域叠前偏移衰减多次波[J].石油地球物理勘探,2013,48(增刊l):36-41.DUAN Wensheng,LI Fei,LI Shiji,et al.Multiple attenuation on OVT domain prestack migration[J].Oil Geophysical Prospccting,2013,48(S1):36-41.
[11] 赵殿栋.高精度地震勘探技术发展回顾与展望[J].石油物探,2009,48(5):425-435.ZHAO Diandong.Review and prospect of high precision seismic prospecting technology development[J].Geophysical Prospecting for Petroleum,2009,48(5):425-435.
[12] Carp P W,Li X.A regularized approach to 3-D prestack time migration[C].CSEU National Convention,2005,l4l-l44.
[13] Zhan S F,Chen M S,Li L,et al.OVT-domain wide-azimuth prestack seismic attribute analysis[J].Geophysical Prospccting,2015,50(5):956-966.
[14] 袁刚,王西文,雍运动,等.宽方位数据的炮检距向量片域处理及偏移道集校平方法[J].石油地球物理勘探,2016,55(1):81-90.YUAN Gang,WANG Xiwen,YONG Yundong,et al.Wide-azimuth data migration in OVT domain and OVG flattening[J].Oil Geophysical Prospecting,2016,55(1):81-90.
[15] Williams M,Jenner E.Interpreting seismic data in the presence of azimuthal anisotropy;or azimuthal aniso-tropy in the presence of the seismic interpretation[J].The Leading Edge,2002,21(8):771-774.
[2] 刘依谋,印兴耀,张三元,等.宽方位地震勘探技术新进展[J].石油地球物理勘探,2014,49(3):596-610.LIU Yimou,YIN Xingyao ZHANG Sanyuan,et al.Recent advances in wide-azimuth seismic exploration[J].Oil Geophysical Prospecting,2014,49(3):596-610.
[3] Vermeer G J O.Creating image gathers in the absence of proper common-offset gathers[J].Exploration Geo-physics,1998,29(4):636-642.
[4] Starr J.Method of Creating Common-Offset/Common-Azimuth Gathers in 3-D Seismic Surveys and Method of Conducting Reflection Attribute Variation Analysis[P].US6026059,2000-02-15.
[5] Jenner E,Williams M,Davis T.A new method for azimuthal velocity analysis and application to a 3D survey,Weyburn field,Saskatchewan,Canada[C].SEG Technical Program Expanded Abstracts,2001,20:102-105.
[6] Williams M,Jenner E.How important is effect of azimuth anisotropy in 3-D seismic data? Enhancing data quality and extending the potential of the 3-D interpretation[C].SEG Technical Program Expanded Abstracts,2001,20:126-128.
[7] Vermeer G J O.Processing orthogonal geometry:what is missing?[C].SEG Technical Program Expanded Abstracts,2005,24:2201-2204.
[8] 印兴耀,张洪学,宗兆云.OVT数据域五维地震资料解释技术研究现状与进展[J].石油物探,2018,57(2):155-178.YIN Xingyao,ZHANG Hongxue,ZONG Zhaoyun.Research status and progress of 5D seismic data interpretation in OVT domain[J].Geophysical Prospecting for Petroleum,2018,57(2):155-178.
[9] 段文胜,李飞,王彦春,等.面向宽方位地震处理的炮检距向量片技术[J].石油物探,2013,48(2):206-213.Duan Wensheng,LI Fei,Wang Yanchun,et al.Offset vector tile for wide-azimuth seismic processing[J].Oil Geophysical Prospecting,2013,48(2):206-213.
[10] 段文胜,李飞,李世吉,等.OVT域叠前偏移衰减多次波[J].石油地球物理勘探,2013,48(增刊l):36-41.DUAN Wensheng,LI Fei,LI Shiji,et al.Multiple attenuation on OVT domain prestack migration[J].Oil Geophysical Prospccting,2013,48(S1):36-41.
[11] 赵殿栋.高精度地震勘探技术发展回顾与展望[J].石油物探,2009,48(5):425-435.ZHAO Diandong.Review and prospect of high precision seismic prospecting technology development[J].Geophysical Prospecting for Petroleum,2009,48(5):425-435.
[12] Carp P W,Li X.A regularized approach to 3-D prestack time migration[C].CSEU National Convention,2005,l4l-l44.
[13] Zhan S F,Chen M S,Li L,et al.OVT-domain wide-azimuth prestack seismic attribute analysis[J].Geophysical Prospccting,2015,50(5):956-966.
[14] 袁刚,王西文,雍运动,等.宽方位数据的炮检距向量片域处理及偏移道集校平方法[J].石油地球物理勘探,2016,55(1):81-90.YUAN Gang,WANG Xiwen,YONG Yundong,et al.Wide-azimuth data migration in OVT domain and OVG flattening[J].Oil Geophysical Prospecting,2016,55(1):81-90.
[15] Williams M,Jenner E.Interpreting seismic data in the presence of azimuthal anisotropy;or azimuthal aniso-tropy in the presence of the seismic interpretation[J].The Leading Edge,2002,21(8):771-774.