不同岩性中深层储气库储、盖层岩石力学特征研究

doi:10.11885/j.issn.1674-5086.2025.12.02.04

西南石油大学学报(自然科学版) ›› 2026, Vol. 48 ›› Issue (4): 45-58.DOI: 10.11885/j.issn.1674-5086.2025.12.02.04

• 油藏型储气库建库技术专刊 • 上一篇下一篇

不同岩性中深层储气库储、盖层岩石力学特征研究

段彬¹, 吴海涛¹, 韩东亮², 赵耀¹, 王淼¹, 张子玉³

1. 中国石油冀东油田分公司, 河北唐山 063004;
2. 东北石油大学新能源与材料学院, 黑龙江大庆 163318;
3. 东北石油大学机械科学与工程学院, 黑龙江大庆 163318

收稿日期:2025-12-02 出版日期:2026-07-20 发布日期:2026-07-20
通讯作者: 韩东亮，E-mail:17300931466@163.com

Study on Rock Mechanical Characteristics of Reservoir and Caprock in Medium-deep Gas Storage with Different Lithologies

DUAN Bin¹, WU Haitao¹, HAN Dongliang², ZHAO Yao¹, WANG Miao¹, ZHANG Ziyu³

1. PetroChina Jidong Oilfield Company, Tangshan, Hebei 063004, China;
2. College of New Energy and Materials Science, Northeast Petroleum University, Daqing, Heilongjiang 163318, China;
3. College of Mechanical Science and Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, China

Received:2025-12-02 Online:2026-07-20 Published:2026-07-20
About author:段彬，1982年生，男，汉族，四川简阳人，工程师，主要从事油气藏开发地质、油气田开发与储气库方案设计等研究工作。E-mail:duanbin@petrochina.com.cn
吴海涛，1983年生，男，汉族，山东临朐人，工程师，主要从事油气田开发和油气藏改建储气库研究。E-mail:qhwht1983@petrochina.com.cn
韩东亮，2001年生，男，汉族，河南驻马店人，硕士研究生，主要从事地下储气库岩石力学和地质力学方面的研究。E-mail:17300931466@163.com
赵耀，1986年生，男，汉族，湖北黄冈人，高级工程师，博士，主要从事油气田开发方面研究。E-mail:yibeilol@163.com
王淼，1988年生，女，汉族，吉林松原人，高级工程师，硕士，主要从事油气田开发地质与储气库方案设计等研究工作。E-mail:wangmiao2013@petrochina.com.cn
张子玉，2001年生，女，汉族，山东济南人，硕士研究生，主要从事地下储气库岩石力学和地质力学方面的研究。E-mail:2647809522@qq.com

摘要/Abstract

摘要： 为研究不同中深层储气库储、盖层岩石力学特性差异，选取P、M、X、S等4座储气库的泥岩、页岩、砂岩及白云岩岩样，开展单轴、三轴及疲劳压缩实验。结果表明： 1） X储气库页岩强度与抗变形能力弱于P储气库泥岩； X储气库白云岩抗压强度和弹性模量显著高于砂岩，可达砂岩的2倍以上；砂岩埋深越大，强度与抗变形能力越强；围压对白云岩强度增幅最大。2）埋深增加及孔隙度、渗透率降低可显著提升岩石强度，弹性模量与抗压强度呈正相关。3）疲劳实验显示，深层P储气库泥岩经1 000次注采后强度仅降10%，中层S储气库泥岩强度波动达20%，深层盖层更适应高压交变载荷。4）微观分析表明，白云岩晶间致密胶结赋予其高强度，砂岩多孔弱胶结导致力学性能较差。研究为储气库长期安全运行提供实验依据。

关键词: 储气库, 岩石力学, 单轴压缩实验, 三轴压缩实验, 岩性差异

Abstract: In order to address the differences in mechanical properties of reservoir and cap rocks in middle and deep UGS, this paper selects mudstone, shale, sandstone, and dolomite cores from four UGS (P, M, X, S) and systematically compares their mechanical properties through uniaxial, triaxial, and fatigue compression experiments. The results are as follows: 1) The mechanical strength and deformation resistance of shale in UGS X are weaker than those of cap mudstone of UGS P. The compressive strength and elastic modulus of dolomite in UGS X are much higher than those of sandstone, and its compressive strength can reach more than twice that of sandstone. 2) For UGS with the same sandstone, the deeper the burial depth, the stronger the compressive strength and deformation resistance, and the strength increase of dolomite due to confining pressure is the greatest. Comparison of mechanical parameters of sandstone and mud stone in P UGS, mudstone has slightly higher strength and deformation resistance than sandstone. 3) An increase in burial depth and a decrease in porosity and permeability can significantly enhance rock strength, with a positive correlation between elastic modulus and compressive strength. Fatigue experiments show that the strength of mudstone in deep UGS only decreases by 10% after 1 000 injections, while the strength fluctuation of mud stone in middle UGS reaches 20%. The deep cap rock is more suitable for high-pressure alternating loads. 4) Microstructure analysis reveals that dolomite has high strength due to dense intergranular cementation, while sandstone's porous structure and weak cementation result in weaker mechanical properties. The research results provide experimental support for long-term safe operation of UGS.

Key words: underground gas storage, rock mechanics, uniaxial compression experiment, triaxial compression experiment, lithological differences

中图分类号:

TE822

段彬, 吴海涛, 韩东亮, 赵耀, 王淼, 张子玉. 不同岩性中深层储气库储、盖层岩石力学特征研究[J]. 西南石油大学学报(自然科学版), 2026, 48(4): 45-58.

DUAN Bin, WU Haitao, HAN Dongliang, ZHAO Yao, WANG Miao, ZHANG Ziyu. Study on Rock Mechanical Characteristics of Reservoir and Caprock in Medium-deep Gas Storage with Different Lithologies[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2026, 48(4): 45-58.

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不同岩性中深层储气库储、盖层岩石力学特征研究

Study on Rock Mechanical Characteristics of Reservoir and Caprock in Medium-deep Gas Storage with Different Lithologies

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