物探与化探2025，Vol.49Issue(5)：1030-1038,9.DOI:10.11720/wtyht.2025.0036
张北地区天然氢气藏远景区分析评价
Prospect area analysis and evaluation of natural hydrogen reservoirs in the Zhangbei area:Interpretation of basement structures based on gravity and magnetotelluric sounding
摘要
Abstract
Large-area hydrogen escape anomalies were detected during the soil hydrogen geochemical survey in the Zhangbei Basin,making it urgent to apply geophysical methods to understand the basement structures that generate and transport hydrogen.For this pur-pose,the first gravity and magnetotelluric surveys targeting natural hydrogen were conducted in the Zhangbei Basin,with 1∶50,000 gravity and magnetotelluric surveys performed within the study area.Using the collected gravity and magnetotelluric data,a large-scale gravity-magnetotelluric profile across the study area was inverted,constrained by drilling,geological,and physical property data.The study identified a"two depressions and three uplifts"structural pattern in the basin,with a total Mesozoic-Cenozoic sedimentary thick-ness ranging from 0.62 to 1.9 km.Four concealed faults were revealed,among which faults F1 and F4 can serve as migration pathways and storage channels for natural hydrogen.The inversion results indicate that the two depressions exhibited continuous and stable strati-graphic interfaces and relatively thick sandstone-mudstone assemblage layers,which provide good sealing capacity to reduce hydrogen leakage effectively.These findings on basement structures offer valuable insights for the prospect area evaluation of natural hydrogen and subsequent exploration plans in the area.They also provide a significant basis for establishing a natural hydrogen exploration tech-nology system and selecting optimal exploration targets.关键词
天然氢/重力勘查/大地电磁勘查/重力-大地电磁约束反演/张北地区/基底构造Key words
natural hydrogen/gravity exploration/magnetotelluric sounding/joint inversion of gravity and magnetotelluric data with constraints/Zhangbei area/basement structure分类
天文与地球科学引用本文复制引用
万燕鸣,刘玲,宿鑫,梁帅,高雪峰..张北地区天然氢气藏远景区分析评价[J].物探与化探,2025,49(5):1030-1038,9.基金项目
国能氢创科技(北京)有限责任公司项目"中国天然氢勘察关键技术研究" （北京）
