The Reliability Research on Water-Sealed Conditions of Underground Water-Sealed Oil Storage Caverns in Guangdong Huizhou, China

Zhang, Bin; Yang, Bo; Jie, Yu; Kang, Xiang Yang; Li, Liqing

doi:10.4028/www.scientific.net/amm.170-173.1318

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…If the volume fraction of gas is assumed to be 0.16 (Che et al., 2009), fluid density and dynamic viscosity can be obtained by Equations and . Due to a lack of the information on in situ hydrological properties of the aquitard, aquitard properties (porosity, specific storage, and permeability) are extracted from other studies (Gassiat et al., 2013; Guo, 2013; Zhang et al., 2012). We assume that earthquake‐induced permeability changes have the form of an exponential function (Wang et al., 2013):

k(t)={k}_{f}+\left({k}_{i}-{k}_{f}\right)\cdot \mathrm{exp}(-t/\tau )

where τ is the decay constant (days) and subscripts i and f denote initial and final values, respectively.…”

Section: Numerical Simulationmentioning

confidence: 99%

Violent Groundwater Eruption Triggered by a Distant Earthquake

Yan

Shi

Wang

et al. 2022

Geophysical Research Letters

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It is now well established that earthquakes cause various hydrogeological responses at distances thousands of kilometers from the epicenter. What remains unexplained is the large amplitude and intensity of some responses. Following the 2004 Mw 9.1 Sumatra earthquake, groundwater 3,200 km from the epicenter erupted violently from a well and formed a water fountain reaching a height exceeding 60 m. We model the relevant processes by combining tidal analysis of groundwater level with numerical simulations using a two‐dimensional finite‐element model. We suggest that the eruption resulted from a combination of factors, including a rapid increase of crustal permeability and runaway CO2 exsolution and bubble nucleation induced by the passage of seismic waves. Our results may have implications for some engineering applications such as oil production and CO2 sequestration, and the eruption of hydrothermal features such as geysers.

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k(t)={k}_{f}+\left({k}_{i}-{k}_{f}\right)\cdot \mathrm{exp}(-t/\tau )

where τ is the decay constant (days) and subscripts i and f denote initial and final values, respectively.…”

Section: Numerical Simulationmentioning

confidence: 99%

Violent Groundwater Eruption Triggered by a Distant Earthquake

Yan

Shi

Wang

et al. 2022

Geophysical Research Letters

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“…Underground water-sealed oil storage caverns play a crucial role in the energy reserve systems of countries worldwide due to their high safety and economic benefits [1][2][3][4][5]. These facilities are commonly established in inland regions characterized by stable surrounding rock and abundant groundwater resources [6][7][8][9][10][11][12]. However, due to the stringent geological conditions required, the availability of suitable land-based reservoir sites is decreasing, posing challenges to fulfilling China's oil reserve needs.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Seawater Intrusion Law and Countermeasures within Island Underground Water-Sealed Oil Storage Caverns

Zhou,

Zhang,

et al. 2023

JMSE

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Underground water-sealed oil storage caverns constructed in island environments is a promising approach for expanding oil storage caverns. However, few researchers have studied the risks of seawater intrusion and the distribution characteristics of intrusion interfaces in large underground water-sealed oil storage caverns in island environments. In this paper, we established a visualized physical simulation platform to investigate the characteristics and control measures of seawater intrusion in single fracture of rock masses within island underground water-sealed oil storage caverns. In addition, the effects of the excavation of caverns, the distance between the cavern and coast, fracture width, seawater level, oil storage stage, water curtain, and water injection pressure were evaluated. The results show that excavation of oil storage caverns carries the risk of seawater intrusion. Specifically, reducing the distance between the oil storage caverns and the coast, increasing the fracture width, and raising the seawater level all contribute to accelerated seawater intrusion into the caverns. However, the vertical water curtain can effectively inhibit seawater intrusion, and increasing the injection pressure of vertical water curtain can avoid the risk of seawater intrusion into the caverns. The research results provide an experimental basis for the study of seawater intrusion in underground oil storage caverns in island environments.

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“…Only a few scholars have studied the site selection of underground water-sealed petroleum storage depots from the perspective of engineering rock mass quality evaluation, rock seepage, and so on. They consider in the process of caverns construction, Water curtain have great influence on the seepage field around the caverns [11][12][13][14][15][16][17]. Caverns excavation mainly affected the change of stress field of surrounding rock mass, and the direction of maximum principal stress of ground stress field is closely related to the stability of caverns [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

A new evaluation method for site selection of large underground water-sealed petroleum storage depots

Xue

Qiu

et al. 2015

Sci. China Technol. Sci.

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Scientific site selection is the first step in constructing underground water-sealed petroleum storage depots, but no uniform standard and code for such activity has been established. Therefore, the main objective of this study is to propose an evaluation method for the site selection of an underground water-sealed petroleum storage depot. The first large underground water-sealed petroleum storage depot being built in China served as the background of this study. The following 12 indexes were used as evaluation factors based on comprehensive evaluation criteria and specifications for key project site selection: geographic structure development feature, topographic feature, lithostratic formation feature, crustal stress, strength of rock mass, joint development feature, hydrogeological conditions, long-term water sealing conditions, environmental/ecological vulnerability, regional stability, technical and economic conditions, and meteorological and hydrological conditions. The weight back analysis and power coefficient methods were also used to evaluate the site selected for the first underground water-sealed petroleum storage depot project. Petroleum site classification models based on the two aforementioned methods were established and used to verify the feasibility of the evaluation criteria and methods, and the evaluation results show the grade of the site selected for the underground water-sealed petroleum storage depot in Huangdao, China is good. The study results may be used as a reference for the site selection of future underground water-sealed petroleum storage depots. underground water-sealed petroleum storage depot, selected site grade, evaluation method, weight back analysis, efficiency coefficient method Citation: Xue Y G, Li S C, Qiu D H, et al. A new evaluation method for site selection of large underground water-sealed petroleum storage depots. Sci China Tech Sci,

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The Reliability Research on Water-Sealed Conditions of Underground Water-Sealed Oil Storage Caverns in Guangdong Huizhou, China

Cited by 4 publications

References 8 publications

Violent Groundwater Eruption Triggered by a Distant Earthquake

Violent Groundwater Eruption Triggered by a Distant Earthquake

Experimental Study on Seawater Intrusion Law and Countermeasures within Island Underground Water-Sealed Oil Storage Caverns

A new evaluation method for site selection of large underground water-sealed petroleum storage depots

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