西北地质2025，Vol.58Issue(5)：1-10,10.DOI:10.12401/j.nwg.2025004
鄂尔多斯盆地构造热演化对富氦天然气富集的控制作用初探
Preliminary Study On the Controlling Effect of Tectono-Thermal Evolution on Helium-Rich Natural Gas Enrichment in Ordos Basin
摘要
Abstract
Among the numerous gas fields in the Ordos Basin,only a few gas fields such as Dongsheng Gas Field have the potential for helium gas resources,indicating that there are certain differences in the enrichment process of natural gas and helium,and temperature is very important for the enrichment of both gases.This arti-cle explores the relationship between natural gas accumulation and helium enrichment from the perspective of basin tectonic thermal evolution.By analyzing the helium source minerals and their helium sealing temperatures in the basement of the Ordos Basin,combined with the tectonic and thermal evolution history of the basin,this study analyzes the distribution of hydrocarbon source rocks and helium source minerals,as well as the spa-tiotemporal characteristics of natural gas generation and helium release,and discusses the enrichment process of natural gas and helium.The results show that the upper Paleozoic hydrocarbon source rocks in the Ordos Basin are mainly distributed and shallowly buried,and the helium source minerals are mainly zircon,monazite and ap-atite,which are dispersed and deeply buried.The temperature and time coincidence of the gas gas in the source rocks and the helium released by the main helium source minerals are high,and the enrichment process of the two has a spatio-temporal coupling relationship.In addition,due to the large and concentrated amount of natural gas generated and small and dispersed amount of helium released,it is difficult to enrich helium in the primary gas reservoir near the settlement center of the source rock,while the secondary gas reservoir far from the settle-ment center of the source rock and near the base of the helium source is often conducive to the rich and integrat-ed accumulation of helium gas.In this study,structural thermal evolution is combined with natural gas rich accu-mulation and helium release,which opens up new ideas and has certain significance for improving the helium re-source investigation and evaluation system.关键词
鄂尔多斯盆地/构造热演化/天然气/氦气/富集Key words
Ordos Basin/tectono-thermal evolution/Natural gas/Helium/enrichment分类
天文与地球科学引用本文复制引用
韩伟,任军峰,李成福,康锐,刘家涛,魏嘉怡,李吉庆,周学荣..鄂尔多斯盆地构造热演化对富氦天然气富集的控制作用初探[J].西北地质,2025,58(5):1-10,10.基金项目
陕西省自然科学基金项目"盆地热演化对壳源氦气富集成藏的控制作用——以渭河盆地为例"(S2024-JC-YB-0817),中国石油长庆油田分公司重大科技专项"鄂尔多斯盆地地震格架大剖面综合解释与基础地质研究"(2023DZZ02),2024年度青海省"昆仑英才·高端创新创业人才"计划A类项目"柴达木盆地北缘氦气资源成藏机理及勘探开发",国家重点研发计划"富氦天然气成藏机制及氦资源分布预测技术-复杂地质介质中氦气运聚及富氦气藏封盖机制研究"(2021YFA0719003),中国地质调查局项目"全国氦气资源潜力评价与战略选区调查"(DD20221665)联合资助. （S2024-JC-YB-0817）
