相控稠油储层物性随机建模实例

A case of facies control stochastic modeling of heavy oil reservoir petrolphysics

以辽河油田32-18块为例，探讨了应用测井和取心井资料及标点过程方法进行沉积微相三维建模．在此基础上，给出了相控物性建模的方法；研究了该区扇三角洲前缘分流河道的定量结构模式．结果表明：分流河道单砂体宽度一般为160～240m，砂体的横向变化快，砂层薄，砂体的定量结构模式为“迷宫状”．物性模型的结果表明，孔隙度、渗透率与沉积微相关系密切，其空间分布明显受微相控制．应用测井和取心井资料．可提取三维建模所需的地质统计学参数．采用标点过程和相控建模方法，可以建立符合地质特征的物性模型．

Taking Block 32-18 in Liaohe oilfield as an example,this paper deals with the method of 3D modeling of sedimentary microfacies and facies control stochastic modeling of reservoir petrolphysics using data of log and cored wells with marked point process technique,in addition presentation of the quantitative architecture model of the braided channel of the fan-delta front in study area.Facies models show that the widths of single sand bodies in braided channel are averagely from 160 m to 240 m,sand bodies are thin,spatial continuity of sand bodies in landscape orientation is relatively poor,and architecture model of channel body is like a labyrinth.Petrolphysics models show that porosity and permeability have close relation to sedimentary micro facieses,and their spatial distribution is controlled obviously by micro facieses.Essential geostatistical parameters for 3D modeling can be picked up effectively using data of log and cored wells.Research shows that the method of marked point process and facies control modeling is feasible in Block 32-18,and petrolphysics models are in line with its geology.