利用自然伽马能谱确定泥质质量分数和阳离子交换量的方法

Determination of Clayey Mass Fraction and Cation Exchange Capacity with Natural Gamma Ray Spectrometry

阐述了地层中的自然伽马能谱与泥质质量分数及阳离子交换量的关系，介绍一种利用自然伽马能谱确定泥质质量分数和阳离子交换量的方法．利用该方法分析了松辽盆地大庆地区、三肇地区３３口井９３４块岩心的自然伽马能谱与泥质质量分数和阳离子交换量的对应关系。

This paper theoretically discusses the relationship between the natural gamma ray spectrometry (NGS) and clayey mass fraction and cation exchange capacity (CEC) in the stratum. A method is introduced about how to determine clayey mass fraction and CEC with NGS. Using this method, we have analysed corresponding ralationships between NGS and clayey mass fraction and CEC in 33 wells and 934 rock samples in Daqing and Sanzhao regions of Songliao Basin. We have also given quantitative formula used for calculating clayey mass fraction and CEC.