ISSN 1009-6248CN 61-1149/P 双月刊

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中国地质学会

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柴达木盆地北缘天然气中氦气富集规律与远景区预测

贺政阳, 杨国军, 周俊林, 李玉宏, 张文, 何文发, 郑斌, 韩伟, 马尚伟

贺政阳, 杨国军, 周俊林, 等. 柴达木盆地北缘天然气中氦气富集规律与远景区预测[J]. 西北地质, 2022, 55(4): 45-60. DOI: 10.19751/j.cnki.61-1149/p.2022.04.004
引用本文: 贺政阳, 杨国军, 周俊林, 等. 柴达木盆地北缘天然气中氦气富集规律与远景区预测[J]. 西北地质, 2022, 55(4): 45-60. DOI: 10.19751/j.cnki.61-1149/p.2022.04.004
HE Zhengyang, YANG Guojun, ZHOU Junlin, et al. Helium Enrichment Law and Predication of Prospective Areas of the North Qaidam Basin[J]. Northwestern Geology, 2022, 55(4): 45-60. DOI: 10.19751/j.cnki.61-1149/p.2022.04.004
Citation: HE Zhengyang, YANG Guojun, ZHOU Junlin, et al. Helium Enrichment Law and Predication of Prospective Areas of the North Qaidam Basin[J]. Northwestern Geology, 2022, 55(4): 45-60. DOI: 10.19751/j.cnki.61-1149/p.2022.04.004

柴达木盆地北缘天然气中氦气富集规律与远景区预测

基金项目: 

国家重点研发计划项目“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。

详细信息
    作者简介:

    贺政阳(1995-),女,助理工程师,主要从事油气及非常规能源地质调查工作。E-mail:hzhengyang@mail.cgs.gov.cn。

    通讯作者:

    周俊林(1986-),男,工程师,主要从事油气及非常规能源地质调查工作。E-mail:zjunlin@mail.cgs.gov.cn。

  • 中图分类号: P618.13

Helium Enrichment Law and Predication of Prospective Areas of the North Qaidam Basin

  • 摘要: 以往调查研究成果表明,柴达木盆地东坪、马北为富氦天然气田,并初步揭示了氦气的成因与来源,但氦气富集规律与资源前景研究依然薄弱。笔者通过对东坪、马北、尖北等气田开展天然气氦含量测试,并结合以往天然气组分和稀有气体同位素数据,对柴达木盆地天然气中氦气的富集规律进行研究。结果表明:柴达木盆地具有良好氦气资源前景,东坪3井区、东坪1井区、尖北气田和马北气田氦气含量达到工业利用标准;氦气主要富集在远离生烃凹陷的板块边缘基底隆起带之上,含量受基底岩性控制;基底断层与区域不整合面构成了氦气和烃类气体高效的运移通道,孔隙-裂隙水、游离相甲烷和氮气是氦气运移的主要载体,活跃的边底水促进了氦气的运移和富集;高排驱压力的含膏泥岩和厚层泥岩构成了良好的保存条件。基于氦气富集控制因素的分析,建立了柴达木盆地氦气富集模式;基于氦气地质条件分析,预测阿尔金山山前隆起带和马海—大红沟隆起带为氦气资源远景区,是下一步氦气勘探的有利区带。研究成果可为柴达木盆地氦气勘探提供方向和线索。
    Abstract: Previous investigation and research results show that Dongping and Mabei in the Qaidam basin are helium-rich natural gas fields, and the origin and source of helium have been preliminarily revealed. However, the research on the enrichment law and resource prospect of helium is still weak. In this paper, based on the helium content test of natural gas in Dongping, Mabei and Jianbei gas fields, combined with the previous natural gas composition and rare gas isotope data, the enrichment law of helium in natural gas in the Qaidam basin was studied. The results show that the Qaidam basin has a good prospect of helium gas resources, and the helium content of Dongping 3 well area, Dongping 1 well area, Jianbei gas field and Mabei gas field reaches the standard of industrial utilization. Helium gas is mainly enriched in the basement uplift belt at the plate edge far from the hydrocarbon generating sag, and its content is controlled by the basement lithology; Basement faults and regional unconformity surfaces constitute efficient migration channels for helium and hydrocarbon gas. Pore fissure water, free phase methane and nitrogen are the main carriers of helium migration. Active edge and bottom water promote the migration and enrichment of helium;Gypsum bearing mudstone and thick mudstone with high displacement pressure constitute good preservation conditions. Gypsum bearing mudstone and thick mudstone with high displacement pressure constitute good preservation conditions. Based on the analysis of the controlling factors of helium enrichment, the helium enrichment model of Qaidam basin is established. Based on the analysis of the geological conditions of helium, it is predicted that the Altun mountain front uplift belt and the Mahai Dahonggou uplift belt are the prospective areas of helium resources and the favorable areas for the next helium exploration. The research results can provide directions and clues for the helium exploration in Qaidam Basin.
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出版历程
  • 收稿日期:  2022-07-11
  • 修回日期:  2022-09-22
  • 网络出版日期:  2023-01-09

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