【摘要】 本文介绍在石油测井中利用碘化钠探头测量地层自然放射性物质U、Th和K含量的仪器。测量精度:U、Th测量误差不大于1.5ppm,K测量误差不大于0.5％。现正用于石油测井现场。更多还原

【Abstract】 In.this paper an instrument system designed for measuring natural γ-energy spectrum (U, Th, K) is described. The accuracy for measuring uranium and thorium is better than 1.5 ppm, and for measuring potassium is better than 0.5%.更多还原