四川盆地地下采卤型盐腔空气储能封闭性评价

doi:10.11885/j.issn.1674-5086.2023.12.04.02

西南石油大学学报(自然科学版) ›› 2025, Vol. 47 ›› Issue (3): 48-64.DOI: 10.11885/j.issn.1674-5086.2023.12.04.02

四川盆地地下采卤型盐腔空气储能封闭性评价

毛川^1,2, 刘丽^1,3, 赵晓明^1,3, 王鹏², 周瑞琦⁴

1. 西南石油大学地球科学与技术学院, 四川成都 610500;
2. 四川省非金属(盐业)地质调查研究所, 四川自贡 643000;
3. 天然气地质四川省重点实验室, 四川成都 610500;
4. 四川省能源地质调查研究所, 四川成都 610000

收稿日期:2023-12-04 发布日期:2025-07-11
通讯作者: 刘丽，E-mail： liulswpu@163.com
作者简介:毛川，1999年生，男，汉族，四川宜宾人，硕士，主要从事地下储气库建设方面的研究。E-mail：2972515334@qq.com
刘丽，1978年生，女，汉族，辽宁营口人，高级实验师，博士，主要从事勘查技术与工程方面的教学和科研工作。E-mail：liulswpu@163.com
赵晓明，1982年生，男，汉族，山东安丘人，教授，博士研究生导师，主要从事油气田开发地质学、深水沉积学、非常规油气地质、二氧化碳封存与利用、人工智能与油气地质等方面的研究工作。E-mail：zhxim98@163.com
王鹏，1983年生，男，汉族，四川南充人，高级工程师，硕士，主要从事非金属矿产地质调查与勘查方面的工程与研究工作。E-mail：281906151@qq.com
周瑞琦，1986年生，男，汉族，湖南益阳人，高级工程师，博士，主要从事油气地质勘探方面的研究工作。E-mail：17697671@qq.com
基金资助:
四川省科技计划重点研发项目（2022YFS0447）；四川省地质调查研究院科研项目（SCIGS–CZDXM–2024019）；四川大学自贡市校地科技合作项目（2022CD–ZG–8）

Sealing Evaluation of Air Energy Storage in Underground Brine Mining Salt Cavities in Sichuan Basin

MAO Chuan^1,2, LIU Li^1,3, ZHAO Xiaoming^1,3, WANG Peng², ZHOU Ruiqi⁴

1. School of Geoscience and Technology, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Sichuan Provincial Institute of Non-metallic (Salt) Geological Survey, Zigong, Sichuan 643000, China;
3. Sichuan Key Laboratory of Natural Gas Geology, Chengdu, Sichuan 610500, China;
4. Sichuan Institute of Energy Geological Survey, Chengdu, Sichuan 610000, China

Received:2023-12-04 Published:2025-07-11

摘要/Abstract

摘要： 中国在数千年采盐历史过程中形成了大量采卤型盐腔，与地下盐腔储气库相比，采卤型盐腔具有地质条件复杂、腔体形态极不规则、密闭性及稳定性差等特点。为了研究采卤型盐腔的封闭性能，以薄层不规则采卤型盐腔为研究对象，基于地质、测井和各种室内岩芯实验结果，建立了四川盆地Y盐腔三维精细地质模型和井筒三维动态地质力学模型，并对固井界面微环空和裂缝扩展进行了数值模拟。结果表明：1) 在明确模型渗透率及压力分布的基础上，模拟显示四川盆地Y盐腔具有良好的封闭性；2) 循环荷载作用下的疲劳损伤和塑性应变会局部集中，主要集中在水泥环与套管的界面处；3) 适当降低水泥环弹性模量和纤维含量，会增强井筒处的封闭能力；4) 在评价盐腔封闭能力时，围岩渗透率是主要因素。盐腔储气库建设过程中，应根据区域内岩石封闭能力的强弱，合理预留一部分盐岩顶板厚度，保障腔体密闭性。

关键词: 四川盆地, 采卤型盐腔, 密闭性, 三维地质模型, 数值模拟

Abstract: During thousands of years of salt mining in China, a large number of brine-mining salt cavities have been formed. Compared with underground salt cavity gas storage reservoirs, brine-mining salt cavities are characterised by complex geological conditions, extremely irregular cavity morphology, and poor confinement and stability, etc. In order to study the sealing performance of brine-mining salt cavities, this paper with the thin irregular brine mining salt cavity as the research object based on the results of geological, logging and laboratory coretests, a three-dimensional fine geological model and a three-dimensional dynamic geomechanical model of the Y Salt Cavity and wellbore in the Sichuan Basin were established, and numerical simulations of the micro-annularity and fracture extension at the cementing interface were carried out. The results show that: 1) on the basis of clarifying the model permeability and pressure distribution, the simulation results show that the Y Salt Cavity in Sichuan Basin has good closure; 2) the fatigue damage and plastic strain under cyclic loading will be concentrated locally, mainly at the interface between the cement ring and the casing; 3) appropriately lowering the modulus of elasticity of the cement ring and the content of the fibre will enhance the closure ability at the wellbore; 4) when evaluating the closure ability of the salt cavity, the surrounding rock permeability is the main factor. During the construction of the salt cavity gas storage reservoir, a part of the thickness of the top plate of salt rock should be reasonably reserved according to the strength of the closure ability of the rocks in the region to guarantee the cavity tightness.

Key words: Sichuan Basin, brine-mining salt cavity, confinement, three-dimensional geological model, numerical simulation

中图分类号:

TE822

毛川, 刘丽, 赵晓明, 王鹏, 周瑞琦. 四川盆地地下采卤型盐腔空气储能封闭性评价[J]. 西南石油大学学报(自然科学版), 2025, 47(3): 48-64.

MAO Chuan, LIU Li, ZHAO Xiaoming, WANG Peng, ZHOU Ruiqi. Sealing Evaluation of Air Energy Storage in Underground Brine Mining Salt Cavities in Sichuan Basin[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2025, 47(3): 48-64.

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四川盆地地下采卤型盐腔空气储能封闭性评价

Sealing Evaluation of Air Energy Storage in Underground Brine Mining Salt Cavities in Sichuan Basin

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