γ测井仪计量特性在高品位铀模型上的验证

Gamma Logging Metrological Characteristics of High-grade Uranium on the Validation of the Pad

我国原有铀矿γ测井模型标准铀含量上限为1.09%,应用其校准的γ测井仪对高品位铀矿的测量结果曾饱受争议。在2014年研建高品位(1.83%、5.09%)铀模型后,用其对γ测井仪的计量特性在进行了试验验证后,结果表明仪器死时间和铀含量灵敏度没有显著变化,说明γ测井仪在铀含量5%以内的测量结果仍然可靠。

The upper range of uranium concentration of our countrys＇ γ logging pad is 1.09% ,the measurement result of high uranium concentration deposit by γ logger that calibrated by 3, logging pads was controversial. After researched and built the calibration pads of high concentration of uranium （ 1.83% ,5.09% ） in 2014, carried out the test of metrologieal characteristics of γ logger through the pads, proved there is not notable change of dead time and sensitivity of uranium content of γ logger, indi- cated γ loggers＇ measuring result is reliable when uranium concentration under 5%.