陈上仁, 王祥, 王来军,等.右江盆地三叠系石炮组：华南页岩气新层系的潜力初探[J].河南理工大学学报（自然科学版）,2026,45(6):62-71.

Chen S R, Wang X, Wang L J, et al.The Triassic Shipao Formation in the Youjiang Basin： A preliminary study on the potential of a new shale gas formation in South China[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(6):62-71.

右江盆地三叠系石炮组：华南页岩气新层系的潜力初探

陈上仁1, 王祥1, 王来军1, 黄文芳1, 岑文攀1,2, 覃英伦3,4, 罗瑜洁1, 陈基瑜1, 张静娴1, 陆文师3

1.广西壮族自治区地质调查院，广西 南宁  530031；2.中国地质大学（武汉） 构造与油气资源教育部重点实验室，湖北 武汉  430074；3.广西能源集团有限公司，广西 南宁  530031；4.中国石油大学（北京） 地球科学学院，北京  102299

摘要: 目的 为探究新区新层系右江盆地三叠系石炮组页岩气富集地质条件，剖析其页岩气勘探潜力。  方法 以野外实地调查为基础，综合运用全岩X衍射测试、扫描电镜（scanning electron microscope，SEM）观测和甲烷等温吸附实验等技术手段，结合国内外典型区块系统分析石炮组页岩气富集潜力。 结果 结果表明：（1）台盆相有利于有机质富集，沉积中心富有机页岩厚度通常为50～120 m；（2）总有机碳（total organic carbon， TOC）含量为0.21%～12.30%（平均1.52%），有机质类型以Ⅰ-Ⅱ型为主，处于过成熟阶段；（3）储层以矿物溶蚀孔为代表的无机孔为主，该类孔为游离气赋存提供了更多空间；（4）多期构造运动对页岩气的保存产生了较大影响，现今三叠系残余厚度较大、埋深适中的区域仍具备较好的页岩气保存条件。  结论 右江盆地石炮组页岩沉积-构造背景较复杂，但其具有富有机质页岩厚度较大，脆性矿物含量高，页岩吸附性能良好等优点，是页岩气勘探的有利区域。

关键词:新区带;新层系;页岩气;右江盆地;富集条件

doi:10.16186/j.cnki.1673-9787.2025020011

基金项目:国家自然科学基金资助项目（U24A20592）；广西自然科学基金资助项目（2024JJA150208）；广西地矿局科研项目（GXDK202430）

收稿日期:2025/02/11

修回日期:2025/04/24

出版日期:2026/10/09

The Triassic Shipao Formation in the Youjiang Basin： A preliminary study on the potential of a new shale gas formation in South China

Chen Shangren1, Wang Xiang1, Wang Laijun1, Huang Wenfang1, Cen Wenpan1,2, Qin Yinglun3,4, Luo Yujie1, Chen Jiyu1, Zhang Jingxian1, Lu Wenshi3

1.Guangxi Institute of Geological Survey， Nanning  530031， Guangxi， China；2.Key Laboratory of Tectonics and Petroleum Resources of the Ministry of Education， China University of Geosciences （Wuhan）， Wuhan  430074， Hubei， China；3.Guangxi Energy Group Co.， Ltd.， Nanning  530031， Guangxi， China；4.School of Earth Sciences， China University of Petroleum （Beijing）， Beijing  102299， China

Abstract: Objectives To investigate the geological conditions for shale gas enrichment in the Triassic Shipao Formation of the Youjiang Basin as a new area and new stratum， and to evaluate its shale gas exploration potential. Methods Based on field investigations， the shale gas enrichment potential of the Shipao Formation was systematically evaluated using whole-rock X-ray diffraction， scanning electron microscopy （SEM）， and methane isothermal adsorption experiments， combined with comparative analyses of typical shale gas blocks in China and abroad.  Results The results show that： （1） platform-basin facies are conducive to organic matter enrichment， and the thickness of organic-rich shale in the sedimentary center generally ranges from 50 to 120 m； （2） total organic carbon （TOC） content ranges from 0.21% to 12.30% （average： 1.52%）， with organic matter predominantly of types I-II， in the over-mature stage； （3） the reservoir is dominated by inorganic pores， mainly represented by mineral dissolution pores， which provide more space for free gas occurrence； （4） multi-stage tectonic movements have significantly affected the preservation of shale gas. However， areas where the residual Triassic thickness is relatively large and burial depth is moderate still have relatively good preservation conditions.  Conclusions The sedimentary-tectonic setting of the Shipao Formation shale in the Youjiang Basin is relatively complex. Nevertheless， it has the advantages of large thickness of organic-rich shale， high brittle mineral content， and good adsorption performance， making it a favorable region for shale gas exploration.

Key words: new zone; new stratification; shale gas; Youjiang Basin; enrichment conditions