随机地震反演在岩性油气藏储层预测中的应用
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摘要
随机反演突破了地震频带宽度的限制,可获得高分辨率的地层波阻抗资料,具有纵向分辨率较高且不完全受井分布控制等优点。随机地震反演不仅可以获得高分辨率波阻抗资料,还可以得到伽玛、孔隙度等储层物性参数,具有更直接的岩石物理意义。实例应用表明,利用该方法得到的反演结果精度更高,储层预测效果更好。
High vertical resolution impedance can be obtained by seismic stochastic inversion which is not limited by the bandwidth of seismic data.Through stochastic inversion,not only the high resolution impedance,but also the gamma ray,porosity and other lithologic parameters with physical properties of rock can be inverted.Real case application indicated that reservoir prediction results with higher precision could be acquired using the approach of seismic stochastic inversion.
引文
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    2 Guerreiro L,Caetano H.Global seismic inversion-a new approach tointegrate seismic information in the stochastic models.SPE111305-MS,2007
    3李方明,计智锋,赵国良,等.地质统计反演之随机地震反演方法——以苏丹M盆地P油田为例.石油勘探与开发,2007;34(4):451—455
    4李国良,蔡佳,甘华军,等.南阳凹陷边界断裂带砂体反演及预测.岩性油气藏,2010;22(2):99—102
    5韩涛,彭仕宓,黄述旺,等.南阳凹陷东部地区核二段储层“四性”关系研究.石油天然气学报,2007;29(01):69—73

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