|
|
|
| SENSITIVITY ANALYSIS OF INFLUENCE FACTORS OF CAVERN SHRINKAGE RISK IN SALT CAVERN GAS STORAGES |
| JING Wenjun1，YANG Chunhe1，2，LI Luming3，YUAN Zhenyu3，SHI Xilin1，LI Yinping1 |
| (1. State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，Wuhan，Hubei 430071，China；2. Key Laboratory for Exploitation of Southwestern Resources and Environmental Disaster Control Engineering，Ministry of Education，Chongqing University，Chongqing 400044，China；3. Jintan Gas Storage Project Department，Sichuan-to-East Natural Gas Transmission Pipeline Branch Company of SINOPEC，Jintan，Jiangsu 213200，China) |
|
|
|
|
Abstract How to decrease the effective volume loss of salt cavern gas storages during their operation period to increase their service life is the concerned problem of operation and management departments. The influence of formation parameters，design parameters and operation parameters on cavern shrinkage risk of salt cavern gas storages was analyzed from the macroscopic angle. The inductive seven factors were analyzed and forecasted aiming at their effects on volume shrinkage of salt cavern gas storages. Then，the single-parameter sensitivity analysis method was used to calculate the seven factors? sensitivity coefficients to volume shrinkage ratio. Finally，a new method of forecasting the cavern?s volume shrinkage ratio was put forward based on the factors? sensitivity coefficient when the operation parameters were changed. The following conclusions are drawn. Besides the creep parameters of salt rock，the running mode of neighboring caverns，low pressure runtime in a cycle period and ratio of height to diameter of cavern are the sensitive factors for cavern shrinkage risk. Therefore，the cavern shrinkage can be decreased effectively by injecting and producing simultaneously with neighboring caverns，reducing low pressure runtime and controlling the cavern shape during construction and operation periods.
|
|
Received: 27 April 2012
|
|
|
|
| [1] 井文君，杨春和，陈 锋. 基于事故统计分析的盐岩地下油/气储库风险评价[J]. 岩土力学，2011，32(6)：1 787–1 793.(JING Wenjun，YANG Chunhe，CHEN Feng. Risk assessment of salt cavern oil/gas storage based on accident statistical analysis[J]. Rock and Soil Mechanics，2011，32(6)：1 787–1 793.(in Chinese))
[2] 杨春和，李银平，陈 锋. 层状盐岩力学理论与工程[M]. 北京：科学出版社，2009：164–175.(YANG Chunhe，LI Yinping，CHEN Feng. Bedded salt rock mechanics theory and engineering[M]. Beijing：Science Press，2009：164–175.(in Chinese))
[3] 赵克烈. 注采气过程中地下盐岩储气库可用性研究[博士学位论文][D]. 武汉：中国科学院武汉岩土力学研究所，2009.(ZHAO Kelie. Research on the usability of underground salt rock gas storage in the process of gas injection and production[Ph. D. Thesis][D]. Wuhan：Institute of Rock and Soil Mechanics，Chinese Academy of Sciences，2009.(in Chinese))
[4] 李二兵. 层状盐岩中天然气地下储存库稳定性评价研究[博士学位论文][D]. 南京：解放军理工大学，2007.(LI Erbing. Research on evaluation of stabilities for natural gas underground storage caverns in bedded salt[Ph. D. Thesis][D]. Nanjing：PLA University of Science and Technology，2007.(in Chinese))
[5] 任 松，李小勇，姜德义，等. 盐岩储气库运营期稳定性评价研究[J]. 岩土力学，2011，32(5)：1 465–1 472.(REN Song，LI Xiaoyong，JIANG Deyi，et al. Evaluating stability of salt rock gas storage during operation period[J]. Rock and Soil Mechanics，2011，32(5)：1 465– 1 472.(in Chinese))
[6] 尹雪英，杨春和，陈剑文. 金坛盐矿老腔储气库长期稳定性分析数值模拟[J]. 岩土力学，2006，27(6)：869–874.(YIN Xueying，YANG Chunhe，CHEN Jianwen. Numerical simulation research on long-term stability of gas storage in Jintan Salt Mine[J]. Rock and Soil Mechanics，2006，27(6)：869–874.(in Chinese))
[7] 尹雪英，杨春和，李银平. 泥岩夹层对层状盐岩体中储库稳定性影响[J]. 岩土力学，2006，27(增)：344–348.(YIN Xueying，YANG Chunhe，LI Yinping. Influence of mudstone interlayer on stability of oil storage in laminated salt rock[J]. Rock and Soil Mechanics，2006，27(Supp.)：344–348.(in Chinese))
[8] 丁国生，杨春和，张保平，等. 盐岩地下储库洞室收缩形变分析[J]. 地下空间与工程学报，2008，4(1)：80–84.(DING Guosheng，YANG Chunhe，ZHANG Baoping，et al. Shrinkage analysis of salt cavern storage[J]. Chinese Journal of Underground Space and Engineering，2008，4(1)：80–84.(in Chinese))
[9] 丁国生，张保平，杨春和，等. 盐穴储气库溶腔收缩规律分析[J]. 天然气工业，2007，27(11)：94–96.(DING Guosheng，ZHANG Baoping，YANG Chunhe，et al. The creep deformation rule of gas storage salt cavern[J]. Natural Gas Industry，2007，27(11)：94–96.(in Chinese))
[10] CHAN K S，MUNSON D E，BODNER S R，et al. Cleavage and creep fracture of rock salt[J]. Acta Materialia，1996，44(9)：3 553–3 565.
[11] CHAN K S，BODNER S R，MUNSON D E. Recovery and healing of damage in WIPP salt[J]. International Journal of Damage Mechanics，1998，7(2)：143–166.
[12] HAUPT M. A constitutive law for rock salt based on creep and relaxation tests[J]. Rock Mechanics and Rock Engineering，1991，24(4)：179–206.
[13] 马林建，刘新宇，马淑娜，等. 深部盐岩含夹层地层初始地应力场模拟分析[J]. 解放军理工大学学报：自然科学版，2009，10(6)：604–609.(MA Linjian，LIU Xinyu，MA Shuna，et al. Numerical analysis of in-situ stress in deep rock salt stratum containing mudstone interlayers[J]. Journal of PLA University of Science and Technology：Natural Science，2009，10(6)：604–609.(in Chinese))
[14] 曹军义，展辰辉，王改山. 土质高边坡稳定因素的敏感性分析[J]. 岩石力学与工程学报，2005，24(增2)：5 350–5 354.(CAO Junyi，ZHAN Chenhui，WANG Gaishan. Sensitivity analysis of high soil slope stabilizing factors[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(Supp.2)：5 350–5 354.(in Chinese))
[15] 吴振君，王水林，汤 华，等. 一种新的边坡稳定性因素敏感性分析方法——可靠度分析方法[J]. 岩石力学与工程学报，2010，29(10)：2 050–2 055.(WU Zhenjun，WANG Shuilin，TANG Hua，et al. A new sensitivity analysis approach for slope stability—reliability analysis method[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：2 050–2 055.(in Chinese))
[16] 王者超，李术才，吕晓庆，等. 地下水封石油洞库施工期围岩完整性参数敏感性分析[J]. 岩土力学，2011，32(增2)：488–495.(WANG Zhechao，LI Shucai，LU Xiaoqing，et al. Parameter sensitivity of rock mass integrity for a pilot underground crude oil storage caverns during construction phase[J]. Rock and Soil Mechanics，2011，32(Supp.2)：488–495.(in Chinese))
[17] 李二兵，谭跃虎，刘向东，等. 水泥土挡墙整体稳定的敏感性分析[J]. 岩土力学，2006，27(增)：1 137–1 140.(LI Erbing，TAN Yuehu，LIU Xiangdong，et al. Sensitivity analysis of overall stability of cement-soil retaining wall[J]. Rock and Soil Mechanics，2006，27(Supp)：1 137–1 140.(in Chinese)) |
|
|
|
2012, Vol. 31 
