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介绍了气井产能的确定方法及地质参数的选择与计算方法 :采用初始二项式无阻流量、稳定产量及初始采气指数作为气井产能评价的指标 ;1 0项参数分别是①储层有效厚度 ;②储层孔隙度 ;③储容系数 ;④好储层的储容系数 ;⑤与断层的距离 ;⑥与断层距离开方的倒数 ;⑦视褶皱强度系数 ;⑧构造面最大主曲率 ;⑨横向剖面线曲率 ;⑩纵向剖面线曲率。分析了影响气井产能的地质参数特征 ,完成了气井产能与地质因素的相关分析。在气井产能与地质因素的图论聚类分析的基础上 ,对气井作了分类 ,提出了两种不同模式的高产井的观点 ,即 :①储层厚度大、孔隙度中等、视褶皱强度系数中等的高产井 ;②储层厚度中等、孔隙度高、视褶皱强度系数大的高产井。
The methods to determine gas well productivity and the selection and calculation of geological parameters are introduced. The initial binomial unobstructed flow rate, stable yield and initial gas recovery index are used as indicators of gas well productivity evaluation. The 10 parameters are ① the effective reservoir thickness; (2) reservoir porosity; (3) storage factor; (4) storage factor of good reservoir; (5) distance from fault; (6) inverse of the square root of fault distance; (7) Section line curvature; ⑩ Longitudinal section line curvature. The characteristics of geological parameters that affect the productivity of gas wells are analyzed, and the correlation analysis of gas well productivity and geological factors is completed. Based on the graph theory clustering analysis of gas well productivity and geological factors, the gas wells are classified and two different modes of high production wells are proposed. That is: ① The reservoir thickness is thick, the porosity is moderate, the apparent compressive strength coefficient Medium-high production wells; ② medium reservoir thickness, high porosity, depending on the folds intensity coefficient of high-yielding wells.