渭河盆地固市凹陷Y区氦气储层地质条件分析及有利区预测

蔡鑫磊; 张良; 李谦益; 张阳; 李正; 李玲; 张国强; 李萌瑶

doi:10.3969/j.issn.1006-6535.2025.05.005

特种油气藏 >

2025 , Vol. 32 >Issue 5: 40 - 48

DOI: https://doi.org/10.3969/j.issn.1006-6535.2025.05.005

地质勘探

渭河盆地固市凹陷Y区氦气储层地质条件分析及有利区预测

蔡鑫磊 ,
张良 ,
李谦益 ,
张阳 ,
李正 ,
李玲 ,
张国强 ,
李萌瑶

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1.陕西燃气集团有限公司,陕西西安 710016;
2.西安石油大学,陕西西安 710065;
3.西北有色工程有限责任公司,陕西西安 710038

蔡鑫磊(1969—),男,正高级会计师,2010年毕业于西北大学经济学专业,获博士学位,现主要从事氦气勘探地质研究及矿产经济学研究工作。

收稿日期: 2024-11-20

修回日期: 2025-08-01

网络出版日期: 2025-10-30

基金资助

陕西省地质勘查项目“陕西省渭南市华州—华阴地区地热水及氦气普查”(陕地勘金字[2021]38号);深地国家科技重大专项“盆地边缘天然氦富集与探测”(SQ2025AAA060128)

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Geological conditions of helium reservoir and favorable area prediction in Y Region, Gushi Sag, Weihe Basin

CAI Xinlei ,
ZHANG Liang ,
LI Qianyi ,
ZHANG Yang ,
LI Zheng ,
LI Ling ,
ZHANG Guoqiang ,
LI Mengyao

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1. Shaanxi Gas Group Co., Ltd., Xi′an, Shaanxi 710016, China;
2. Xi′an Shiyou University, Xi′an, Shaanxi 710065, China;
3. Northwest Nonferrous Engineering Co., Ltd., Xi′an, Shaanxi 710038, China

Received date: 2024-11-20

Revised date: 2025-08-01

Online published: 2025-10-30

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摘要

氦气是壳幔物质交换信息的重要载体,更是关系国家安全和高新技术产业发展的重要战略性稀有气体资源。基于钻测井和二维地震资料,对渭河盆地固市凹陷Y区储层地质条件进行分析,并对氦气成藏条件进行刻画,旨在深入理解该区域的地质构造特征、储层特性以及氦气的赋存状态,以预测氦气富集区,为氦气资源的勘探开发和可持续利用提供科学依据。结果表明:Y区主力储层高陵群组、蓝田—灞河组储层物性、电性良好,早期发育扇三角洲,至张家坡组沉积时期,滨浅湖沉积范围扩大,三角洲向陆退积,是一套良好的储盖组合;区域基底花岗岩提供了充足的氦气源,地热水流通为氦气成藏提供了载体,深大断裂为氦气运移提供通道,并为不同构造圈闭的形成提供了保障,张家坡组盖层则有效地阻止氦气的逸散,有利于氦气的聚集成藏;蓝田—灞河组气水层厚度为48～102 m,沉积环境适宜,可作为Y区氦气勘探主力层段。该研究可为渭河盆地氦气资源勘探关键靶区的优选提供技术支持。

关键词： 氦气; 成藏条件; 有利区预测; 固市凹陷; 渭河盆地

本文引用格式

蔡鑫磊 , 张良 , 李谦益 , 张阳 , 李正 , 李玲 , 张国强 , 李萌瑶 . 渭河盆地固市凹陷Y区氦气储层地质条件分析及有利区预测[J]. 特种油气藏, 2025 , 32(5) : 40 -48 . DOI: 10.3969/j.issn.1006-6535.2025.05.005

Abstract

Abstract:Helium is an important carrier of information on crust-mantle material exchange and a strategic rare gas resource critical to national security and high-tech industries.Based on drilling,logging,and 2D seismic data,we analyzed the reservoir geological conditions in Y Region of the Gushi Sag,Weihe Basin,and characterized the helium accumulation conditions,aiming to deeply understand the geological structural features,reservoir properties,and helium occurrence state in this area,to predict helium-rich zones and provide a scientific basis for helium resource exploration,development,and sustainable utilization.The results showed that the main reservoir in Y Region-the Gaoling Group and the Lantian-Bahe Formation,had good physical and electrical properties.In the early stage,a fan delta developed;by the time of Zhangjiapo Formation deposition,the shore-shallow lacustrine deposition expanded,and the delta retreated landward,forming an excellent reservoir-caprock assemblage.The regional basement granite provided ample helium source,and circulating geothermal water served as a carrier for helium migration and accumulation.Deep,large faults provided pathways for helium migration and helped form various structural traps,while the Zhangjiapo Formation caprock effectively prevented helium from escaping,facilitating helium accumulation.In the Lantian-Bahe Formation,the gas-bearing water layer is 48-102 m thick with a favorable depositional environment,making it the main target interval for helium exploration in the Y Region.This research provides technical support for selecting key target areas for helium exploration in the Weihe Basin.

Key words： helium; accumulation conditions; favorable area prediction; Gushi Sag; Weihe Basin

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