摘要
针对复杂断块油藏,由于断块小且破碎,难以建立高精度三维地质模型的问题,论文以东濮凹陷文38断块为例,利用断裂及构造解释结果,以单井断点和单井分层数据为约束,分别建立起文38断块沙三上亚段的高精度三维构造模型。在此基础上,以沉积微相为约束条件,利用各小层单井孔隙度和渗透率数据进行外推插值绘制等值线平面图,进而通过确定性建模方法建立起文38断块沙三上亚段确定的、唯一的储层参数模型,既为下一步油藏数值模拟提供了模型基础,同时也为储层属性的空间表征提供了依据。
In view of the problem that it is difficult to establish a high-precision 3D geological model for complex fault-block reservoirs due to the small and fragmented fault blocks, this paper takes the Wen38 fault block in Dongpu depression as an example, using the results of fault and structural interpretation, with the constraints of single well fault point and single well stratification data, respectively establishes the high-precision 3D structural model of the upper submember of Shahejie Formation in the Wen38 fault block. On this basis, with the sedimentary microfacies as the constraint condition, the porosity and permeability data of each small layer are used for extrapolation interpolation to draw the contour plane, and then the deterministic modeling method is used to establish the determined and unique reservoir parameter model of the upper submember of Shahejie Formation in the Wen38 fault block. This not only provides the model basis for the next step of reservoir numerical simulation, but also provides the basis for the spatial characterization of reservoir properties.
