华庆地区长8_1储层物性下限研究

Study on Lower Limit of Property of Chang-81 Reservoir of HuaQing Area

华庆地区长81储层孔隙结构复杂,非均质性较强,属于典型的低孔—低渗透储层。针对砂岩储层物性孔隙结构特征,结合岩心分析的孔隙度、渗透率与含油岩心饱和度相渗透率的关系等方面进行深入研究,采用经验统计法以及孔隙度、含水饱和度和相渗曲线组合的方法研究得出该储层的物性下限值,孔隙度下限值为6.0%,渗透率下限值为0.08×10-3μm2。

HuaQing area chang - 8_1 reservoir belongs to the typical low porosity, low permeability reservoir. It＇ s porous structure is complex, strong heterogeneity. Aiming at its porous structure, making an intensive core study on the relationship of porosity, permeability oil - saturation and relative permeability, the lower limit of physical property may be determined by a Statistics method and an integrated method of porosity, water saturation and relative - permeability curve. The limit of its poros-ity is 6% , and the limit of its permeability is 0.08×10^-3μm^2.