为了提高随机建模的精度，降低模拟实现中的不确定性，在建模过程中应采取以下地质约束原则：等时约束建模，成因控制建模，多步建模，应用地质模式选择随机模拟方法，应用目标区多学科信息或原型模型确定统计特征参数，应用确定性信息限定随机模拟过程。在此基础上，提出了地质约束条件下的储层随机建模流程，并以长庆安塞油田坪桥水平井区储层随机建模为例，进一步阐述了地质约束随机建模的思路和方法。%The principles of geological constraints on reservoir stochastic modeling are discussed. In order to decrease the uncertainties in simulation realizations, the following geological constraint principles must be abided: ①equivalent-time constrained modeling; ② origin-controlled modeling; ③ multi-stage modeling; ④ choosing optimum stochastic simulation methods using geological model; and ⑤determining statistical character parameters using proto-model. A new flowchart of reservoir stochastic modeling under geological constraints is proposed. A case study of stochastic modeling of Chang 6 reservoir of Triassic in Pingqiao horizontal well region of Changqing oilfield is used to further certify the methods of geological constrained stochastic modeling.
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