叠前道集地层约束反演技术在砂砾岩储层预测中的应用
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摘要
通常叠后波阻抗反演是基于入射角为零的叠后地震资料进行的,可以较好地反映岩性特征,但对于非均质性较强的储层物性预测效果不理想.叠前道集地层约束反演技术基于贝叶斯原理,利用叠前道集数据反演,包含振幅随入射角度变化的信息,能够较好地反映储层非均质性.东营凹陷北部陡坡带砂砾岩体反演结果表明,该技术能够较好地预测了工区砂砾岩体储层的空间展布特征.
Traditional post-stack impedance inversion performs inversion of post-stack seismic data.It is a better technique to describe subsurface lithologic character.But it could not get an exact reservoir prediction to heterogeneous reservoir.Pre-Stack Constrained Stratigraphic Inversion Technique is based on a bayesian formalism.It performs simultaneous inversion of multiple angle stacks.This inversion combines pre-stack seismic amplitude and could predict heterogeneous reservoir much better.Pre-Stack Constrained Stratigraphic Inversion is applied to glutenite reservoir prediction at steep slop structure zone in north Dongying Sag and sculpts glutenite reservoir Spatial Distribution.
Traditional post-stack impedance inversion performs inversion of post-stack seismic data.It is a better technique to describe subsurface lithologic character.But it could not get an exact reservoir prediction to heterogeneous reservoir.Pre-Stack Constrained Stratigraphic Inversion Technique is based on a bayesian formalism.It performs simultaneous inversion of multiple angle stacks.This inversion combines pre-stack seismic amplitude and could predict heterogeneous reservoir much better.Pre-Stack Constrained Stratigraphic Inversion is applied to glutenite reservoir prediction at steep slop structure zone in north Dongying Sag and sculpts glutenite reservoir Spatial Distribution.
引文
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[8]McAulay A D.Pre-stackinversion with plane-layer point source modeling[J].Geophysics,1985,50(1):77-89.
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[11]Connolly P.Elastic impedance[J].The Leading Edge,1999,18:438-452.
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[14]Tonellot T,MacéD,Richard V.Joint stratigraphic inversion of angle limited stacks[R].71st Ann.Internat.Mtg:Soc.of Expl.Geophys,2001:227-230.
[15]Tonellot T,MacéD,Richard V.3D quantitative AVA:joint versus sequential stratigraphic inversion of angle-limited stacks[R].72nd Ann.Internat.Mtg:Soc.of Expl.Geophys,2002:253-256.
[2]年静波,张尔华.我国东部复杂断块区三维地震反演与储集层预测[J].新疆石油地质,2006,27(2):184-187.
[3]张永刚.油气地球物理技术新进展[M].北京:石油工业出版社,2003:128-175.
[4]张学才.适于陡坡带砂砾岩体的地震资料叠前时间偏移处理技术[J].地球物理学进展,2008,23(2):588-593.
[5]苑书金.叠前地震反演技术的进展及其在岩性油气藏勘探中的应用[J].地球物理学进展,2007,22(3):879-880.
[6]苑书金,于常青.各向异性介质中的弹性阻抗及其反演[J].地球物理学进展,2006,21(2):520-523.
[7]Cooke D A,Schneider W A.Generalized linear inversion of reflection seismic data[J].Geophysics,1983,48(6):665-676.
[8]McAulay A D.Pre-stackinversion with plane-layer point source modeling[J].Geophysics,1985,50(1):77-89.
[9]McAualy A D.Plane layer prestackinversionin the presence of surface reverberation[J].Geophysics,1986,51(9):1789-1800.
[10]Whitcombe D N.Elastic impedance normalization[J].Geophysics,2002,58:60-62.
[11]Connolly P.Elastic impedance[J].The Leading Edge,1999,18:438-452.
[12]王云专,李素华.基于AVO正演模拟的泊松比反演[J].大庆石油学院学报,2006,30(1):7-9.
[13]刘彦,胡金民.叠前弹性反演技术研究及应用[J].地质装备,2008,9(5):25-28.
[14]Tonellot T,MacéD,Richard V.Joint stratigraphic inversion of angle limited stacks[R].71st Ann.Internat.Mtg:Soc.of Expl.Geophys,2001:227-230.
[15]Tonellot T,MacéD,Richard V.3D quantitative AVA:joint versus sequential stratigraphic inversion of angle-limited stacks[R].72nd Ann.Internat.Mtg:Soc.of Expl.Geophys,2002:253-256.
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