壳源氦气成藏问题及成藏模式  

Several issues in the accumulation of crust-derived helium and the accumulation model

作　　者：李玉宏[1,2] 张文[1,2] 王利[3] 赵峰华[2] 韩伟[1] 陈高潮[1] 

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054 [2]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [3]中国地质调查局资源评价部,北京100037

出　　处：《西安科技大学学报》2017年第4期565-572,共8页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金(41572131);中国地质调查局矿产资源调查评价项目(121201011000150014;12120113040300)

摘　　要：氦气作为一种稀有战略资源,在工业和高科技领域应用广泛。目前富氦气藏中被工业利用的氦气资源基本为壳源氦,采自天然气。氦气特殊的气源条件和物理化学性质决定其成藏过程与常规油气有着极大的差别。根据近年来在渭河盆地氦气调查工作中的一些困惑和思考,总结了氦气成藏中亟待探索的3个方面:(1)不同氦源岩的性质及氦源岩的有效性评价;(2)载体气性质及氦气赋存状态对弱源氦气运聚过程中的影响;(3)氦气直径最小,其保存的特殊性。在此基础上初步提出了氦气成藏概念模式,认为有效氦源岩、高效运移通道和合适的载体气藏是氦气成藏的关键。研究结果供业内有兴趣的同行批评指正,为寻找氦气资源提供参考和指导。Helium is widely applied in industry and high-tech field as a kind of rare resource. Nowadays, the vast majority of helium used in industry is collected from natural gas, with the features of crust-derived helium. The special source and physiochemical property of helium make the accumulation far different from conventional oil and gas. According to some confusion and thinking in the research of helium in Weihe Basin, we conclude three aspects awaiting to be studied in helium accumulation：①the properties of different helium source rocks and validity evaluation ; ②the influence of carrier gas properties and helium occurrence on the accumulation of weak source helium;and ③the requirement of helium preservation due to the smallest size. On the basis of above discussion, we further put forward the preliminary helium accumulation model, suggesting that the key of helium accumulation are effective helium source rocks, efficient migration pathways and a suitable carrier gas reservoir. The results provide guidance for helium resource exploration, and peer review and criticism are welcomed.

关 键 词：氦气 成藏 弱源 赋存状态 

分 类 号：P618[天文地球—矿床学]