小口径高温伽马能谱测井仪关键技术及应用  

Key Technology of Small Caliber Gamma Spectrum Logger and Application in High Temperature

作　　者：冯延强[1] 焦仓文[1] 邵帅 吴仙明 布和 FENG Yanqiang;JIAO Cangwen;SHAO Shuai;WU Xianming;BU He(CNNC Key Laboratory of Uranium Resources Exploration and Evaluation Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China)

机构地区：[1]核工业北京地质研究院、中核集团铀资源勘查与评价技术重点实验室,北京100029

出　　处：《世界核地质科学》2023年第3期796-804,共9页World Nuclear Geoscience

基　　金：中核集团第四代铀矿勘查关键技术与示范项目(编号:物SD03-02)资助。

摘　　要：针对我国铀矿科学深钻深部放射性参数的探测需求,研究了高温伽马能谱探测、小口径一体化承压耐温以及新型探测器核脉冲信号获取等技术,解决了小口径钻孔条件下伽马能谱定量探测耐高温高压技术难题。实现的小口径高温伽马能谱测井仪铀含量测量范围为100×10^(-6)~5000×10^(-6),耐温技术指标为130℃条件下可连续工作10 h,并已在相山铀矿田3000 m深度铀矿科学深钻和诸广长江1号科学钻孔实际应用。该技术能够为铀资源攻深找盲、深部成矿环境研究等提供技术装备支撑。To meet the demand of detecting deep radioactive parameters in the deep scientific drilling of uranium deposit in China,new techniques such as high-temperature gamma spectrum detection,small-caliber integrated pressure-resistance and temperature-resistance,and new detector nuclear pulse signal acquisition have been innovatively developed to solve the technical problems of high-temperature and high-pressure resistance of gamma spectrum quantitative detection under small-caliber conditions.The measurement range of uranium content of the small-caliber high-temperature gamma-ray spectrometry logger is 100×10^(-6) to 5000×10^(-6).The temperature-resistant technical index is 130℃,which can work continuously for 10 hours and has been applied in the 3000m deep uranium scientific drilling at Xiangshan uranium ore filed and Zhuguang Changjiang No.1 scientific drilling.This technology can provide technical equipment support for the exploration of uranium resources and the study of deep ore-forming environment.

关 键 词：小口径 耐高温 γ能谱测井 

分 类 号：P631.817[天文地球—地质矿产勘探]