【摘要】 确定储集层孔隙度及渗透率下限值,是识别油气层、计算储量必需的参数,介绍了经验统计法、储集层喉道下限法、相渗曲线法和试气法等4种常用储集层孔渗下限的计算方法,对鄂尔多斯盆地某气田B井区石盒子组盒8段孔隙度和渗透率的下限值进行了确定,其储集层孔隙度下限值确定为6.25%,渗透率下限值确定为0.1×10-3μm2.更多还原

【Abstract】 This paper presents four methods of empirical statistical analysis,throat radius cut off,relative permeability curve and gas test for effective determination of reservoir porosity and permeability cutoff values for the purpose of oil-gas reservoir identification and reserves estimation. These methods are applied to determination of cutoffs of porosity and permeability of the He-8 member,Shihezi formation in Wellblock-8 in a gas field in Ordos basin,showing that the porosity cutoff value is 6.25%,the permeability cutoff value is 0.1×10-3 μm2.更多还原