This article discusses how various factors can affect the accuracy of U, Th, and K elemental content measurements in natural gamma spectroscopy logs. These factors include errors in the measured energy spectrum, degradation of energy resolution, and spectrum drift. Currently, there is limited research on quantifying the individual impact of each factor on measurement accuracy. To address this gap, the study proposes a methodology that combines energy spectrum data sampling and single-factor quantitative analysis. This approach allows for a more precise understanding of how each factor influences the accuracy of the measurements. The results of the study have important implications for improving the accuracy of U, Th, and K content measurements in applications such as the oil and gas industry.
Li et al. (Sun,) studied this question.