子洲气田山2~3段低孔低渗砂岩储层物性下限确定方法研究

长庆油田子洲气田山2~3段砂岩储层具有典型的低孔—低渗特征。文章论述了其储层物性孔隙结构,分析了岩心孔隙度、渗透率与含油饱和度和相渗透率的关系,采用3种方法确定并相互验证了该储层的物性下限值:孔隙度下限值为3.5%,渗透率下限值为0.1×10~(-3)μm~2。该值得到了试油试采资料的证实,为储量计算提供了依据,对该储层的开发生产具有指导作用。

Research on Low Porosity and Permeability of Sandstone Oil and Gas Reservoir Performance from Lower Permian Shanxi Formation of Zi Zhou gas field

The reservoir section of Zi Zhou gas field has the typical characteristic of low porosity and low permeability. Through a deep study from the sandstone reservoir characteristics of the pore structure,and analysis of the relationship between porosity,permeability and oil saturation by core analysis,taking low porosity and low permeability sandstone reservoir of Lower Permian Shanxi Formation in Zi Zhou gas field.The minimum of reservoir physical property is ascertained.That is,the porosity is 3.5%and the per...