随机建模是指以已知的信息为基础,以随机函数为理论,应用随机模拟方法,产生可选的、等概率的储层模型方法。该方法承认控制点以外的储层参数具有一定的不确定性,即具有一定的随机性。Deautch等根据模拟单元的特征,将随机模型分为基于目标的随机模型和基于象元的随机模型。 Stochastic modeling refers to the known information as the basis, the stochastic function as the theory, the application of stochastic simulation method to produce an alternative, equal probability reservoir model. This method admits that the reservoir parameters outside the control point have certain uncertainty, that is, they have a certain degree of randomness. According to the characteristics of analog units, Deautch divides the stochastic models into target-based stochastic models and pixel-based stochastic models.