Article
Environmental Studies
Zhen Liu, Yuk Ming Tang, Ka Yin Chau, Fengsheng Chien, Wasim Iqbal, Muhammad Sadiq
Summary: South Asian countries are challenged with energy price fluctuations and external shocks, necessitating the maintenance of high levels of strategic petroleum reserves. Afghanistan is the most vulnerable in terms of energy strategic reserves, while India is the least vulnerable country in the South Asian sub-region.
Article
Environmental Studies
Yang Yang, Zhen Liu, Hayot Berk Saydaliev, Sajid Iqbal
Summary: Strategic petroleum reserves are an important tool to mitigate the risk of oil supply disruptions and geopolitical influence. By using econometric estimation and principal component analysis (PCA), this study measures the physical oil supply risk and strategic petroleum reserves in South Asia aim to enhance social welfare. The findings show that 30% of the crude oil distribution shortfall is attributed to the fluctuation in crude oil costing, resulting in a 40% decrease in GDP and significant social welfare wastage. The study also emphasizes the importance of crude oil accumulation and drawdown in optimizing consumer well-being while maintaining control over oil stockpiles.
Article
Energy & Fuels
Houyin Long, Shitong Wang, Wei Wu, Guanglu Zhang
Summary: This paper uses a computable general equilibrium model to examine the impact of oil shortages on the Chinese economy and proposes a framework for determining the optimal strategic petroleum reserve (SPR). The results show that oil shortages lead to price increases, GDP declines, and differential effects on energy and non-energy sectors.
Article
Energy & Fuels
Samira Mohammadkhani, Benaiah U. Anabaraonye, Armin Afrough, Rasoul Mokhtari, Karen Louise Feilberg
Summary: A systematic study was conducted on crude oil-brine-rock interactions in tight chalk cores at reservoir conditions, revealing that polar components in the oil phase play a significant role in wettability alteration during ageing. Formation water and diluted seawater were found to be better candidates for enhanced oil recovery in the Dan field, and the modified flow zone indicator was likely the main variable responsible for higher oil recoveries observed in Tor core samples.
Article
Economics
Reid B. Stevens, Jeffery Y. Zhang
Summary: This study uses a structural vector autoregression model to analyze the impact of purchases and releases from the Strategic Petroleum Reserve (SPR) on oil prices in the U.S. The results indicate that while unanticipated purchases raise oil prices by about 1 percent, unanticipated releases have no measurable impact.
Article
Geosciences, Multidisciplinary
G. Marquez, A. Morato, M. A. Guzman, C. Boente, C. Witt
Summary: This research paper investigates the hydrocarbon generation and accumulation in the Progreso Basin Province of the southern coastal region of Ecuador through an organic geochemical analysis of oils and sedimentary rocks. The study reveals that almost all oils from this province underwent biodegradation and were generated from multiple Tertiary source rocks in a marine environment with terrestrial organic material influx. The research also establishes correlations between source facies and oil samples, identifying three families of oils. Furthermore, geochemical data suggest the presence of two probable hydrocarbon kitchens in the deepest parts of the basin and a potential offshore kitchen beyond the Santa Elena Peninsula.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Mechanics
Anrun Li, Hui Deng, Haojie Zhang, Hanhan Liu, Mingliang Jiang
Summary: This study investigates the impact of acidity on red-bed landslides and establishes a stress-acidity-strain-time model, providing improved accuracy in describing the shear-creep behavior of red-bed soft-rock weak interlayers.
MECHANICS OF TIME-DEPENDENT MATERIALS
(2023)
Article
Energy & Fuels
Yuhao Zhang, Hongling Ma, Xilin Shi, Hongwu Yin, Shengnan Zhang
Summary: This study focuses on the structure of China's salt mines and the design of horizontal salt cavern gas storage (HSCGS). By establishing a Yield-Dilatancy-Failure (YDF) model, the minimum pressure and casing shoe position have been determined, providing reference for the design of HSCGS.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Energy & Fuels
Zhikai Dong, Yinping Li, Haoran Li, Xilin Shi, Hongling Ma, Kai Zhao, Yuanxi Liu, Tao He, Dongzhou Xie, Ahu Zhao
Summary: This study investigates the influence of loading history on the creep behavior of rock salt through laboratory tests and numerical simulations. The results show that the improved multi-stage loading data processing method is effective, cracks are more developed in samples with an early loading history, and the steady-state creep rate of rock salt is independent of loading history but related to stress and temperature. This study provides important insights into the understanding of loading history effects on rock salt creep and offers a basis for the design, construction, and operation of gas storage salt caverns.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Thermodynamics
Daosheng Ling, Song Zhu, Jianjing Zheng, Zijun Xu, Yunsong Zhao, Liuping Chen, Xilin Shi, Jinlong Li
Summary: This study investigates the effect of interface angle on the solution mining of a salt cavern for energy storage. A coupled convection-mass transfer model is developed to simulate the dissolution of salt surfaces with different angles. The results show that the interface angle indirectly influences the dissolution rate through the flow pattern and rate, with larger interface angles leading to faster dissolution rates. The research suggests using the proposed simulation method to determine the actual dissolution rate in different stages of engineering design.
Article
Engineering, Geological
Zhikai Dong, Yinping Li, Haoran Li, Ziheng Wang, Xilin Shi, Xiangsheng Chen, Qingfeng Lu
Summary: Constructing salt cavern gas storage in the ultra-deep strata of over 2000 m in depth is a crucial strategic development in China. This paper conducted triaxial creep tests and synchronous acoustic emission monitoring on rock salt under multi-stage temperatures to examine the impact of temperature on its creep behavior. The results indicate that higher temperature leads to shorter transient creep duration and a higher steady-state creep rate. Moreover, temperature rise initiates volume dilatation creep and generates more microcracks. This research enhances the understanding of the creep properties of ultra-deep rock salt and provides essential insights for the design, construction, and operation of gas storage salt caverns.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Energy & Fuels
Qingdong Li, Zexu Ning, Jia Liu, Wenjie Xu, Liangtong Zhan, Jiqin Liu, Yunmin Chen, Xilin Shi, Xiangsheng Chen, Jinlong Li
Summary: This paper investigates the impact of step distance on the stability and economy of multi-step horizontal salt caverns (MSHSCs) for energy storage. The study uses a solution mining model to determine the geometry of MSHSCs with different step distances and conducts static creep analyses to assess stability risks. Results show that smaller step distances increase stability risks but also lead to increased cavern volume and expected revenue. Economic analysis is conducted to find a balanced step distance, and a medium step distance of 100 m or 125 m is recommended for MSHSC design.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Xinxing Wei, Xilin Shi, Wei Hu, Shengnan Ban, Yinping Li, Hongling Ma, Peng Li, Chunhe Yang
Summary: In this paper, a classification model is developed using logging data from a 61-day closed well in a salt cavern of the Jianghan gas storage cavern to analyze the factors affecting salt cavern tightness. A hierarchical model and population competition model are established to analyze the influence weights of temperature and pressure on salt cavern tightness. Based on the results, a principal component analysis evaluation model of salt cavern tightness at different moments is established. The established dynamic evaluation method of salt cavern tightness has a reference value for engineering practice.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
Xinxing Wei, Shengnan Ban, Xilin Shi, Peng Li, Yinping Li, Shijie Zhu, Kun Yang, Weizheng Bai, Chunhe Yang
Summary: China aims to reach its peak CO2 emissions in 2030 and achieve carbon neutrality by 2060. Salt caverns, which can store CO2, are considered as excellent underground energy storage facilities. A correlation model is developed to predict the volume of underground salt caverns and China's CO2 emissions by 2030 based on recent data. An evaluation model for carbon capture capacity is also developed, along with a proposed method for comprehensive utilization of salt cavern energy storage. The research findings provide reference values for the large-scale development of salt caverns and carbon neutralization.
Article
Thermodynamics
Xin Liu, Xilin Shi, Yinping Li, Liangliang Ye, Xinxing Wei, Shijie Zhu, Weizheng Bai, Hongling Ma, Chunhe Yang
Summary: Synthetic salt rock prepared by molten salt crystallization method can achieve crystallization of salt veins, and its physical properties and crystal structure are consistent with natural salt rock, with uniform density distribution and good compaction. The porosity and permeability of synthetic salt rock range from 2.3% to 5.9% and from E-13 to E-16 m2, respectively, and its mechanical properties are close to those of natural salt rock, with obvious ductility.
Article
Computer Science, Interdisciplinary Applications
Peng Li, Yinping Li, Xilin Shi, Kun Yang, Xinxing Wei, Kai Zhao, Hongling Ma, Chunhe Yang
Summary: In this study, the self-stabilization capability of the roof structure in salt cavern gas storage was thoroughly investigated, focusing on the influences of roof span, roof interlayer thickness, and arch height. The results show that the stability of the roof structures is influenced by the internal gas pressure and the depth of the salt cavern. The plastic zone and vertical displacement increase with the roof span, resulting in roof collapse due to the penetration effect between the salt layer and interlayer. The findings have significant implications for optimizing cavern design and enhancing stability in underground salt caverns.
COMPUTERS AND GEOTECHNICS
(2023)
Article
Energy & Fuels
Hongying Tan, Hejuan Liu, Xilin Shi, Hongling Ma, Xiaosong Qiu, Yintong Guo, Shengnan Ban
Summary: This paper investigates the mechanical and acoustic responses of low-permeability sandstone under different confining pressures through multistage triaxial loading-unloading tests, and reveals the evolution laws of its mechanical behavior and acoustic emission parameters.
Article
Engineering, Geological
Peng Li, Yinping Li, Xilin Shi, Hongling Ma, Kai Zhao, Xiaopeng Liang, Xinxing Wei, Chunhe Yang
Summary: Enhancing natural gas storage capacity by utilizing the pore space of sediments in cavern bottoms holds significant potential in high impurity salt formations. This study utilized X-ray computed tomography imaging to comprehensively investigate pore structures of sediment samples and conducted fluid flow simulations to understand the influence of particle size on the brine velocity field. The study found that permeability of partial packings positively correlated with porosity and particle size, with finer particles posing a higher risk of blockage during debrining operations.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Shengnan Ban, Hejuan Liu, Xinxing Wei, Xilin Shi, Haijun Mao, Yujia Song, Hongying Tan
Summary: This paper systematically analyzes the dominant factors affecting the sealing performance of caprocks in underground gas storage. The weights of these factors are analyzed by the analytic hierarchy process (AHP). The fuzzy comprehensive evaluation method (FCEM) is then applied to evaluate the sealing performance of caprocks in three typical underground gas reservoirs in China. The results show that breakthrough pressure and permeability are key parameters affecting the sealing ability of caprocks.
APPLIED SCIENCES-BASEL
(2023)
Article
Energy & Fuels
Peng Li, Yinping Li, Xilin Shi, Dongzhou Xie, Hongling Ma, Chunhe Yang, J. J. K. Daemen
Summary: The debrining process in high impurity salt mines involves four stages: rapid increase of injection gas pressure, discharging the upper brine, discharging the brine in sediments, and rapid decrease of injection gas pressure. A mathematical model based on the pressure equilibrium principle is proposed to calculate debrining parameters, and a numerical method is established to calculate the total debrining time. The results show that the debrining rate affects the time to reach the final sediment surface and the descending speed of the gas-brine interface.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
Article
Energy & Fuels
Xiaopeng Liang, Hongling Ma, Rui Cai, Kai Zhao, Xuan Wang, Zhuyan Zheng, Xilin Shi, Chunhe Yang
Summary: This study uses the Discrete Element Method to simulate the sediment-filled salt cavern underground gas storage process and assess the impact of sediment on salt cavern stability. The findings show that sediment has a positive influence on salt cavern stability, reducing deformation and shrinkage and improving the stress state of rock salt.
Article
Green & Sustainable Science & Technology
Shijie Zhu, Xilin Shi, Chunhe Yang, Yinping Li, Hang Li, Kun Yang, Xinxing Wei, Weizheng Bai, Xin Liu
Summary: This paper systematically analyzed the ways of hydrogen loss in salt cavern hydrogen storage (SCHS), identified the most significant loss pathways, and proposed prevention and control measures. The research results are of great significance for promoting the healthy and rapid development of SCHS.
