洛伦兹曲线在微观非均质性研究中的应用

由于 A 油田 B 井区 E31碎屑岩储层主要为大套厚层砂砾岩，其宏观非均质性研究的成果并不能很好地反应储层的非均质性。为了更准确地掌握砂体在空间分布状况，从孔喉、颗粒、填隙物三方面对其微观非均质性展开研究。通过选取孔喉分选系数、相对分选系数、平均孔喉比、颗粒分选系数、胶结物含量及杂基含量等参数，从孔喉、颗粒及填隙物空间分布的角度出发，首次将洛伦兹曲线引入微观非均质性研究，通过分析认为该层微观非均质性具有中等强度特征。

Application of Lorentz curves in the research of microscopic heterogeneity

The microscopic heterogeneity can be studied in respect of pore throats,detrital particles and interstitial ma-terial like matrix or cements.With the proper parameters,lorenz curves are first introduced into the evaluation of micro-scopic heterogeneity of E3 1 clastic reservoir in B well block of A Oilfield on space distribution of detrital particles and in-terstitial material.It can be inferred that the microscopic heterogeneity of the reservoir is of moderate intensity.