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序贯指示模拟和序贯高斯模拟是2种常用的随机模拟方法。在地质统计学反演中,将这2种模拟方法组合使用,先做序贯指示模拟得到岩性数据体,然后进行带岩性遮挡的序贯高斯模拟,最后加上随机反演。用这种方法计算含水饱和度并应用于某地区的精细流体预测中,与常规的流体预测方法叠前AVA同步反演进行了对比,该方法在薄层流体的精细预测方面取得了更好的效果。
Sequential Directed Simulation and Sequential Gaussian Simulation are two commonly used methods of stochastic simulation. In the inversion of geostatistics, the two simulation methods are used in combination. First, the lithologic data body is first simulated by sequential indication, followed by sequential Gaussian simulation with lithological occlusion, followed by stochastic inversion. In this method, the water saturation is calculated and applied to the prediction of fine fluid in a certain area, which is compared with the prestack AVA synchronization inversion of the conventional fluid prediction method. The method achieves better effect.