无放射源密度孔隙度测井的教学实验设计  

Design of Teaching Experiment for Density Porosity Logging Without Radioactive Sources

作　　者：王新光[1,2] 张锋 陈雪莲[1] 邓少贵[1] WANG Xinguang;ZHANG Feng;CHEN Xuelian;DENG Shaogui(School of Geosciences,China University of Petroleum(East China),Qingdao 266580,Shandong,China;State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]东华理工大学核资源与环境国家重点实验室,南昌330013

出　　处：《实验室研究与探索》2025年第3期17-20,共4页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(41974155);中国石油大学(华东)常规教改项目(CM2024001);中国铀业有限公司-东华理工大学联合创新基金项目(NRE202107)。

摘　　要：为了加深学生对密度孔隙度测井原理和方法的理解,在无源放射性密度测量的教学实验基础上进行了改进,采用工业KCl粉末代替放射源,利用玻璃球和氧化铝陶瓷球构建2种骨架密度和多种孔隙度的模拟地层。通过NaI伽马探测器记录透射伽马能谱,实现了无放射源条件下的密度孔隙度测量、刻度及岩性校正实验。这种实验设计消除了放射性实验的安全隐患和心理负担,提高了教学的安全性和可操作性。实际教学应用表明,该实验显著提升了学生对测井原理、刻度与校正方法的掌握,培养了学生的实验能力、科学观察力和创新思维。实验方案践行了“一流课程”高阶性、创新性和挑战度的要求,在安全性与教学效果方面实现了双重提升,为密度孔隙度测井课程的教学改革提供了重要参考。Density porosity logging is one of the core technologies in geophysical logging.In order to deepen students’understanding of the principle and method of density porosity logging,the teaching experiment of passive radioactivity density measurement is improved.Based on the teaching experiment of sourceless radioactive density measurement,industrial-grade KCl powder is used as a substitute for radioactive sources.Simulated formations with two different matrix densities and various porosities are constructed using glass spheres and alumina ceramic spheres.A NaI gamma detector is employed to record the transmitted gamma energy spectrum,enabling experiments on density porosity measurement,calibration,and lithology correction under non-radioactive source conditions.The experimental design eliminates the safety risks and psychological burden associated with radioactive experiments,thereby improves the safety and operability of teaching.Practical teaching applications demonstrate that the experiment significantly enhances students’understanding of logging principles,calibration,and correction methods,while fosters their experimental skills,scientific observation abilities,and innovative thinking.This experimental approach aligns with the requirements of“first-class courses”in terms of high-level,innovative and challenging teaching objectives,achieves dual improvements in safety and teaching effectiveness.It provides valuable insights for the reform of density porosity logging courses.

关 键 词：密度孔隙度测井 岩性校正 无放射源测量 

分 类 号：TE19[石油与天然气工程—油气勘探]