论文部分内容阅读
储层物性非均质性与沉积体系内部的构成单位关系密切，可以分尺度进行研究：（１）在沉积体系级的大尺度范围内，不同的沉积体系具有不同的储集性能；在同一沉积体系中，不同的成因相孔渗值差别极大，主要取决于沉积作用过程中古水流能量和环境的变化。（２）在成因相级的中尺度范围内，各流体流动单元内部及不同的流体流动单元之间孔渗值存在明显的整体差别，这与构成流体流动单元的储层岩性相关系密切，如果叠加有不均匀的成岩作用的影响，那么流体流动单元的物性将会大大地降低。（３）在岩芯级的微尺度范围内，多孔介质具有各向异性特征。
The heterogeneity of reservoir physical properties is closely related to the constituent units in the sedimentary system and can be studied on a scale-by-scale basis. (1) Different sedimentary systems have different reservoir properties within the large-scale sedimentary system. In the system, the different causes of pore permeability vary widely, depending mainly on changes in paleocurrent energy and environment during sedimentation. (2) In the mesoscale range of genetic facies, there is a clear overall difference in pore permeability between each fluid flow unit and different fluid flow units, which is closely related to the reservoir lithology that constitutes the fluid flow unit. If superimposed with the effect of inhomogeneous diagenesis, the physical properties of the fluid flow unit will be greatly reduced. (3) Porous media have anisotropic characteristics at the core-scale microscale.