自然伽玛和中子伽玛测井是岩性测井的重要方法之一。取得一致性较好的测井资料是进行定量解释和逐步过渡到标准刻度的重要前提。我们曾对FC—651型闪烁放射性测井仪的地面面板和仿GC—751型闪烁放射性测井仪进行标准化工作。经过反复实践,发现了不少问题。其中一部份是属于仪器设计不完善或目前条件不具备造成的,则暂时采取权宜的 Natural gamma ray and neutron gamma logging are one of the important methods of lithology logging. Obtaining well-matched well logging data is an important prerequisite for quantitative interpretation and gradual transition to a standard scale. We have standardized the ground panels and the GC-751 scintillation radioactivity log of the FC-651 scintillation radioactivity logging tool. After repeated practice, I found a lot of problems. Some of which are due to imperfect instrument design or current conditions do not have the result, then temporarily take the expedient