摘要
从毛管压力的产生机理，得出压汞曲线反映喉道特征，退汞曲线反映孔隙特征的原理。提出似孔喉比（λ）概念，并按似孔喉比的大小及受其控制曲线的综合形态将储层分为三类：Ⅰ类（λ＜１５）、Ⅱ类（１５＜λ＜２５）、Ⅲ类（λ＞２５）。据排驱压力、最大进汞饱和度等参数将每类又分出三个亚型，共九个亚型。综合评价将储层划分为五个等级，对确定合理经济的开发方案具有重要意义。
From generating mechanism of the capillary pressure the paper presents intrusive mercury curve representing throat character and mercury ejection curve representing pore character.The new concept of the apparent throat ratio λ is presented.According to values of apparent throat ratio λ and overall shape of control curves the reservoirs are divided into three categories.First:λ<15,second:15<λ<25 and third:λ>25.In accord with the parameters of expulsion pressure and maximum intrusive mercury saturation,each category may also be divided into three sub categories,total 9 sub categories.with the comprehensive evaluation the reservoirs are classified as five classes.It is important for determing reasonable economic development project.
关键词
压汞
退汞
储集层
油田开发
reservoir, evaluation intrusive mercury,mercury ejection,apparent throat ratio
