岩穴储气库的天然气存储能力分析

doi:10.19799/j.cnki.2095-4239.2021.0138

储能科学与技术 ›› 2021, Vol. 10 ›› Issue (5): 1624-1630.doi: 10.19799/j.cnki.2095-4239.2021.0138

• 物理储能十年专刊·压缩空气 • 上一篇下一篇

岩穴储气库的天然气存储能力分析

张新敏¹(), 蒋中明²(), 刘澧源³, 肖喆臻²

^1.长沙理工大学土木工程学院
^2.长沙理工大学水利工程学院，湖南长沙 410114
^3.湖南水利水电职业技术学院，湖南长沙 410131

收稿日期:2021-04-01 修回日期:2021-05-14 出版日期:2021-09-05 发布日期:2021-09-08
作者简介:张新敏（1971—），女，高级讲师，从事油气地下存储技术方面的研究工作，E-mail：zxm210@163.com|蒋中明，教授，主要从事能源地下储存方面的研究工作，E-mail：zzmmjiang@163.com。
基金资助:
湖南省教育基金(17C0053);土木工程重点学科创新性项目(17ZDXK06)

An analysis of the storage capacity of rock cavern repository for natural gas

Xinmin ZHANG¹(), Zhongming JIANG²(), Liyuan LIU³, Zhezhen XIAO²

^1.School of Civil Engineering, Changsha University of Science & Technology
^2.School of Hydraulic Engineering, Changsha University of Science & Technology, Changsha 410114, Hunan, China
^3.Hunan Polytechnic of Water Resources and Electric Power, Changsha 410131, China

Received:2021-04-01 Revised:2021-05-14 Online:2021-09-05 Published:2021-09-08

摘要/Abstract

摘要：

为深入了解岩穴储气库的天然气储气能力及库容可利用率，假定储气库内各部位天然气的温度相同以及储气库周围的岩体为同一介质，基于能量和质量守恒原理，考虑天然气的真实可压缩性，研究了定容岩穴储气库内压缩天然气的温度和压力变化过程，进而提出了岩穴地下储气库库容和储气能力的计算方法，并分析了垫底气压力大小对岩穴储气库的储气能力及库容可利用率的影响。研究表明：随垫底气压力增大，岩穴储气库的总储气量相应增加，注采比和库容可利用率则呈现出先增加后减小的变化趋势，且在垫底气压力约为3.0 MPa时，库容可利用率达到最大值。采气完成后的待储阶段，储气库内天然气的压力出现了逐渐恢复现象；垫底气压力增大，天然气压力恢复程度越小；垫底气压力大于3.0 MPa后天然气压力恢复值逐渐趋于稳定。研究结论可为各类天然气储气库的可行性研究与设计提供理论指导。

关键词: 地下储气库, 压缩天然气, 热力学过程, 储气能力, 库容可利用率

Abstract:

This study aimed to clarify the natural gas storage capacity and storage capacity availability of cavern repositories, assuming that the temperature of natural gas in each part of the gas storage was the same and that the rock mass around the gas storage was the same medium. Based on the principle of the conservation of energy and mass, and considering the real compressibility of natural gas, the temperature, and pressure change processes of compressed natural gas in constant-volume cavern gas storage were studied. Furthermore, the calculation method for the storage capacity and the gas storage capacity of a rock cavern for gas storage was proposed. The influence of cushion gas pressure on the gas storage capacity and storage capacity availability of cavern repositories were also analyzed. The results indicated that the cavern repositories' total gas storage capacity increased as the cushion gas pressure increased. Moreover, the injection-production ratio and the storage capacity availability exhibited a trend in which it initially increased before decreasing. When the cushion gas pressure was approximately 3.0 MPa, the storage capacity availability reached the maximum value. Once the gas production stage was completed, the pressure in natural gas stores gradually recovered. As the pressure of the cushion gas increased, less of the natural gas pressure would be recovered. The pressure recovery value of natural gas gradually stabilized once the cushion gas pressure was higher than 3.0 MPa. The study's conclusions provide good theoretical guidance for the feasibility of research and design approaches for various rock-cavern repositories for natural gas storage.

Key words: rock cavern for gas storage, compressed natural gas, thermodynamic process, gas storage capacity, storage capacity availability

中图分类号:

TE 85

张新敏, 蒋中明, 刘澧源, 肖喆臻. 岩穴储气库的天然气存储能力分析[J]. 储能科学与技术, 2021, 10(5): 1624-1630.

Xinmin ZHANG, Zhongming JIANG, Liyuan LIU, Zhezhen XIAO. An analysis of the storage capacity of rock cavern repository for natural gas[J]. Energy Storage Science and Technology, 2021, 10(5): 1624-1630.

图/表 8

表1

图1

表2

图2

图3

图4

图5

图6

参考文献 13

1	陆争光. 中国地下储气库主要进展、存在问题及对策建议[J]. 中外能源, 2016, 21(6): 15-19.
	LU Z G. Major progress in China's underground gas storage construction, obstacles and countermeasures[J]. Sino-Global Energy, 2016, 21(6): 15-19.
2	丁国生, 谢萍. 中国地下储气库现状与发展展望[J]. 天然气工业, 2006, 26(6): 111-113,170.
	DING G S, XIE P. Current situation and prospect of Chinese underground natural gas storage[J]. Natural Gas Industry, 2006, 26(6): 111-113,170.
3	武志德, 郑得文, 李东旭, 等. 我国利用废弃矿井建设地下储气库可行性研究及建议[J]. 煤炭经济研究, 2019, 39(5): 15-19.
	WU Z D, ZHENG D W, LI D X, et al. Feasibility study and suggestions on constructing underground gas storage in abandoned mines in China[J]. Coal Economic Research, 2019, 39(5): 15-19.
4	邱贤德, 邵明康, 张兰, 等. 岩盐流变特性与工程应用研究[J]. 中国井矿盐, 2004, 35(6): 16-20.
	QIU X D, SHAO M K, ZHANG L, et al. Study on rheological characteristics of rock salt and its application in engineering[J]. China Well and Rock Salt, 2004, 35(6): 16-20.
5	刘新荣, 姜德义, 余海龙, 等. 岩盐变形特性的试验研究[J]. 矿冶工程, 1999, 19(4): 12-15.
	LIU X R, JIANG D Y, YU H L, et al. The experiment study of rocksalt's deformation characteristics[J]. Mining and Metallurgical Engineering, 1999, 19(4): 12-15.
6	刘绘新, 张鹏, 盖峰. 四川地区盐岩蠕变规律研究[J]. 岩石力学与工程学报, 2002, 21(9): 1290-1294.
	LIU H X, ZHANG P, GAI F. Study on creep rule of salt rock in Sichuan region[J]. Chinese Journal of Rock Mechanics and Engineering, 2002, 21(9): 1290-1294.
7	罗天宝, 李强, 许相戈. 我国地下储气库垫底气经济评价方法探讨[J]. 国际石油经济, 2016, 24(7): 103-106.
	LUO T B, LI Q, XU X G. The economic evaluation methodology of base gas in China's underground gas storage[J]. International Petroleum Economics, 2016, 24(7): 103-106.
8	冉莉娜, 郑得文, 罗天宝, 等. 盐穴地下储气库的建设与运行特征[J]. 油气储运, 2019, 38(7): 778-781, 787.
	RAN L N, ZHENG D W, LUO T B, et al. Construction & operation characteristics of salt cavern underground gas storages[J]. Oil & Gas Storage and Transportation, 2019, 38(7): 778-781, 787.
9	严铭卿, 赵梦涛, 李军, 等. 洞穴型地下储气库热力分析[J]. 煤气与热力, 2015, 35(2): 59-65.
	YAN M Q, ZHAO M T, LI J, et al. Thermodynamic analysis of cavern-type underground gas storage[J]. Gas & Heat, 2015, 35(2): 59-65.
10	刘燕, 赵耀宗, 于玉良. 天然气内衬岩洞式地下储气库热力学工况探析[J]. 煤气与热力, 2016, 36(2): 27-31.
	LIU Y, ZHAO Y Z, YU Y L. Discussion on thermodynamic operation state of lined cavern underground natural gas storage reservoir[J]. Gas & Heat, 2016, 36(2): 27-31.
11	KUSHNIR R, DAYAN A, ULLMANN A. Temperature and pressure variations within compressed air energy storage caverns[J]. International Journal of Heat and Mass Transfer, 2012, 55(21/22): 5616-5630.
12	YAN K L, LIU H, SUN C Y, et al. Measurement and calculation of gas compressibility factor for condensate gas and natural gas under pressure up to 116 MPa[J]. The Journal of Chemical Thermodynamics, 2013, 63: 38-43.
13	洪开荣. 地下水封能源洞库修建技术的发展与应用[J]. 隧道建设, 2014, 34(3): 188-197.
	HONG K R. Development and application of construction technologies for underground water-sealed energy storage Caverns[J]. Tunnel Construction, 2014, 34(3): 188-197.

计算参数		单位	参数值
洞室半径(r₀)		m	12.5
洞室长度(H)		m	2000
洞室表面积(A_c)		10⁴ m²	16
洞室体积(V)		10⁴ m³	100
密封层对流换热系数(h_c)		W/(m²·K)	50
洞室初始温度(T₀，T_rw)		℃	15
围岩密度(ρ)		kg/m³	2700
气体常数(R)		J/(kg·K)	518.3
空气等压比热(c_p)		J/(kg·K)	2215.24
空气等容比热(c_v)		J/(kg·K)	1697.5
热传导系数(λ)	围岩	W/(m·K)	3
	衬砌		1.74
	密封层		45

垫底气压力/MPa	注气速率/(kg·s^-1)	采气速率/(kg·s^-1)	垫底气质量/10³ kg	垫底气体积/10⁴ m³
0.1	11.3	3.2	669.6	100
1	14.75	17.0	6695.8	1000
2	15.25	36.0	13391.5	2000
3	15.15	47.0	20087.3	3000
4	14.8	46.0	26783.1	4000
5	14.32	42.5	33478.8	5000
6	13.76	39.07	40174.6	6000
7	13.14	35.5	46870.4	7000
8	12.5	32.5	53566.1	8000
9	11.83	28.9	60261.9	9000
10	11.15	25.48	66957.6	10000

[1]	蒋中明, 郭菁, 唐栋. 压气储能地下储气库压缩湿空气热力学模型[J]. 储能科学与技术, 2021, 10(2): 638-646.
[2]	蒋中明, 郭菁, 唐栋. 基于储能效率分析的CAES地下储气库容积分析[J]. 储能科学与技术, 2020, 9(3): 892-900.
[3]	蒋中明, 刘澧源, 胡炜, 梅松华, 李鹏. 考虑空气压缩因子变化影响的地下储气库热力学过程分析[J]. 储能科学与技术, 2018, 7(5): 902-907.
[4]	刘澧源，蒋中明，王江营，胡炜，李鹏. 压气储能电站地下储气库之压缩空气热力学过程分析[J]. 储能科学与技术, 2018, 7(2): 232-239.

岩穴储气库的天然气存储能力分析

An analysis of the storage capacity of rock cavern repository for natural gas

RichHTML

PDF

可视化

摘要/Abstract

引用本文

使用本文

图/表 8

参考文献 13

相关文章 4

编辑推荐

Metrics

本文评价