卫城81断块沙四段沉积微相与储层非均质性

储层非均质性既受古地理背景、地层格架、沉积相带、断裂作用的宏观控制，也受岩石类型（岩相）、成岩作用、空隙结构等微观性质的影响。首先应用扬沉作用及优势相编图法的原理编制出东濮凹陷卫城81断块沙四段各编图单元的沉积微相图，研究储层的宏观非均质性；然后利用测井资料二次解释的孔隙度、渗透率及含油饱和度等资料，对研究地区目的层段的储层非均质性进行定量或半定量研究，认为沙四段层内非均质性严重，层间非均质性较强，平面非均质性较强；最后，改进研究区断裂体系分布图及注采单元分布图，为油田开发方案编制及调整提供科学依据。

The Sedimentary Microfacies and Reservoir Heterogeneity in the Fourth Member of Shahejie Formation of Fault Block 81 in Weicheng Oil-field

The reservoir heterogeneity which is under the macrocontrol of the paleogeographic setting, stratigraphic framework, sedimentary facies belt, and fault is under the control of rock type, diagenesis and porestrucue etc. First, the planar distribution of micro-facies of the Fourth Member of Shahejie Formation of Fault Block 81 is compiled by means of mapping method of predominant facies under the guidance of winnow-deposition sedimentation. Then the reservoir heterogeneity of the target zone is studied quantitatively and semi-quantitatively by means of thereexplanation result of well logs including porosity, permeability and oil saturation data etc. The conclusion is drawn as follows: the innerbedded heterogeneity is high, the interbedded heterogeneity is relatively high, and the plane heterogeneity is relatively high. Last, the distribution map of fault system and flooding unit is improved. It can serve the project setting of the oil field.