为使放射性测井仪的测量结果与地层物性建立一定的关系,并使仪器间具有可比性,目前部颁测井规程要求用刻度环或标准源在固定强度下对仪器进行刻度。然而,此刻度方法既忽视了刻度源发射能谱与测井时仪器接收射线能谱的差异,也忽视了不同能量的射线产生的仪器效应不同。因此,达不 In order to establish a certain relationship between the measuring results of the radioactive logging tools and the physical properties of the formation and to make comparability among the instruments, currently, the ministerial logging procedures require graduation rings or standard sources to calibrate the instruments under a fixed intensity. However, this calibration method not only ignores the difference between the emission energy spectrum of the scale source and the energy spectrum of the receiver beam when logging, but also ignores the different instrument effects caused by different energy rays. Therefore, up to no