Title

小直径伽马能谱测井仪探头温度特性研究

Translated Titles

Research on the temperature character of the detector of small-diameter natural gamma ray spectrum logging tool

Authors

叶显诗;中国石油大学地球科学与技术学院 青岛 266555;叶显诗;李会银;徐德龙;严语鸣;中国石油大学地球科学与技术学院 青岛 266555;中国科学院声学研究所 北京 100101

Key Words

自然伽马能谱测井仪 ; NaI(Tl)晶体 ; 伽马能谱 ; 分辨率 ; 脉冲幅度分析 ; natural gamma ray spectrum logging tool ; NaI(Tl) crystal ; gamma ray spectrum ; resolution ; analysis of pulse height

PublicationName

电子测量技术

Volume or Term/Year and Month of Publication

2016年 10期(2016 / 11 / 28)

Page #

26 - 29

Content Language

簡體中文

Chinese Abstract

小直径自然伽马能谱测井仪器研制中,伽马探测器的尺寸及其温度特性是直接影响测井质量的重要因素。在实验室中,测量了小直径自然伽马能谱探测器本底环境下不同温度环境中的能谱响应,对比在不同温度下所采集到的能谱的变化情况,以及该温度下仪器的高压稳谱效果,发现测井仪在环境温度低于150℃的条件下,采集得到能谱中的总计数率和K元素特征峰道址变化较为平缓;同时探头分辨率能够在不超过125℃的情况下保持较高水平,能够得出了仪器适用的工作温度范围为125℃以内。

English Abstract

The size and temperature character of the gamma ray detector are primary factors which influence the quality of well logging directly in developing small‐diameter natural gamma ray spectrum logging tool .The spectrum response of the detector is measured at various temperatures in natural radioactive background .By comparing the changes of gamma ray spectrum and the character of the logging tool ’ s spectrum stabilization by high‐voltage at different temperatures ,it is able to obtain that ,the total rate and the address of element K ’s characteristic peak in gamma ray spectrum changes slowly when the environment temperature is below 150 degree centigrade .And under 125 degree centigrade ,the resolution of detector works in high condition .So it is said the tool’s best working temperature is below 125 degree centigrade .

Topic Category 工程學 > 電機工程
工程學 > 電機工程