应用P波AVO技术预测煤层气储层裂隙
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摘要
利用晋城无烟煤集团某矿的三维地震资料对纵波叠前AVO和方位AVO反演方法进行了应用研究,讨论了保持振幅处理的几项关键技术,并对基于煤层气储层地震勘探的野外采集方法提出了建议。
Anisotropic characteristic is a key restriction towards CBM exploration and exploitation. On the premise of weak anisotropy, AVO technology can be used to predicate the anisotropic development of underground medium relatively accurately. This paper makes the application study on pre-stacked AVO and Azimuthal AVO for the 3D seismic data obtained in some mining area of Jincheng Anthracite Group, discusses several critical techniques about relative amplitude preserved processing, and puts forward some suggestions on the field acquisition method in CBM reservoir seismic exploration.
Anisotropic characteristic is a key restriction towards CBM exploration and exploitation. On the premise of weak anisotropy, AVO technology can be used to predicate the anisotropic development of underground medium relatively accurately. This paper makes the application study on pre-stacked AVO and Azimuthal AVO for the 3D seismic data obtained in some mining area of Jincheng Anthracite Group, discusses several critical techniques about relative amplitude preserved processing, and puts forward some suggestions on the field acquisition method in CBM reservoir seismic exploration.
引文
[1]Ruger A.P-wave reflection coefficients for transverselyisotropic models with vetical and horizontal axis of symmetry[J].Geophysics,1997,62(3):713-722.
[2]Shuey,R T.Asimplification of the Zeoppritzequation[J].Geophysics,1985,50(4):609-614.
[3]刘洋.各向异性介质中的方位AVO[J].石油地球物理勘探,1999,34(3):260-267.
[4]彭晓波,彭苏萍.P波方位AVO在煤层裂缝探测中的应用[J].岩土力学与工程学报,2005,24(16):2960-2965.
[5]董守华.地震资料煤层横向预测与评价方法[M].徐州:中国矿业大学出版社,2004:83-85.
[6]张立勤,彭苏萍.方位AVO技术检测储层各向异性的方法和实践[J].天然气工业,2005(10):39-40.
[2]Shuey,R T.Asimplification of the Zeoppritzequation[J].Geophysics,1985,50(4):609-614.
[3]刘洋.各向异性介质中的方位AVO[J].石油地球物理勘探,1999,34(3):260-267.
[4]彭晓波,彭苏萍.P波方位AVO在煤层裂缝探测中的应用[J].岩土力学与工程学报,2005,24(16):2960-2965.
[5]董守华.地震资料煤层横向预测与评价方法[M].徐州:中国矿业大学出版社,2004:83-85.
[6]张立勤,彭苏萍.方位AVO技术检测储层各向异性的方法和实践[J].天然气工业,2005(10):39-40.
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