Analysis of support requirements for underground water-sealed oil storage cavern in China

2018 ◽  
Vol 71 ◽  
pp. 36-46 ◽  
Author(s):  
Jie Liu ◽  
Xing-Dong Zhao ◽  
Shu-Jing Zhang ◽  
Lian-Ku Xie
Keyword(s):  
Underground Water ◽  
Oil Storage

Hydro-Mechanical Coupled Analysis of the Stability of Surrounding Rock Mass of Underground Water-Sealed Oil Storage

2013 ◽  
Vol 405-408 ◽  
pp. 402-405 ◽  
Author(s):  
Yun Jie Zhang ◽  
Tao Xu ◽  
Qiang Xu ◽  
Lin Bu
Keyword(s):  
Rock Mass ◽  
Underground Water ◽  
Surrounding Rock ◽  
Comsol Multiphysics ◽  
Coupled Analysis ◽  
Coupling Theory ◽  
Oil Storage ◽  
Stability Of Surrounding Rock ◽  
Straight Wall ◽  
The Stability

Based on the fluid-solid coupling theory, we study the stability of surrounding rock mass around underground oil storage in Huangdao, Shandong province, analyze the stress of the surrounding rock mass around three chambers and the displacement change of several key monitoring points after excavation and evaluate the stability of surrounding rock mass using COMSOL Multiphysics software. Research results show that the stress at both sides of the straight wall of cavern increases, especially obvious stress concentration forms at the corners of the cavern, and the surrounding rock mass moves towards the cavern after excavation. The stress and displacement of the surrounding rock mass will increase accordingly after setting the water curtains, but the change does not have a substantive impact on the stability of surrounding rock mass.

Connectivity Evaluation of Water Curtain System of Underground Oil Storage Caverns

2014 ◽  
Vol 711 ◽  
pp. 566-570
Author(s):  
Wen Sheng Yu ◽  
Yang Ping
Keyword(s):  
Fractured Rock ◽  
Underground Water ◽  
Fractured Rock Mass ◽  
Permeability Characteristics ◽  
Engineering Research ◽  
Water Curtain ◽  
Oil Storage ◽  
Seal Oil ◽  
Water Seal ◽  
Artificial Water

The connectivity of water curtain between holes must be known to ensure water seal effect of artificial water curtain system of the underground oil storage caverns. The permeability characteristics of the fractured rock mass is analysed based on packer test and validity test of the water curtain holes of the China's HuangDao’s national petroleum reserve underground water seal oil engineering, puts forward the connectivity judgment criterion of water curtain holes, and evaluate the connectivity of water curtain system of underground oil storage caverns. This criterion has been used in the connectivity evaluation of water curtain system of the HuangDao’s national petroleum reserve underground water seal oil engineering. Research provides a basis for the dynamic design of water curtain system of underground oil storage caverns, reduce project cost.

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

2012 ◽  
Vol 170-173 ◽  
pp. 1318-1324 ◽  
Author(s):  
Bin Zhang ◽  
Bo Yang ◽  
Yu Xin Jie ◽  
Xiang Yang Kang ◽  
Li Qing Li
Keyword(s):  
Large Scale ◽  
High Reliability ◽  
Three Dimensional ◽  
Underground Water ◽  
Evaluation Index System ◽  
Fuzzy Analytical Hierarchy Process ◽  
Oil Storage ◽  
Before And After ◽  
Hierarchy Process

Reliability of water-sealed conditions is crucial to the safety of water-sealed oil-storage. With a case study of underground water-sealed oil storage cavern in Huizhou, a reliability evaluation index system of water-sealed conditions is estabilished based on the main factors influencing water-sealed conditions. Also, a zonal evaluation of water-sealed conditions of the cave rock mass ranging from 0m to -70m is made by Fuzzy Analytical Hierarchy Process. Moreover, a three-dimensional numerical seepage model is established to study the seepage laws of the groundwater before and after the cavern excavation, and the water inflow during excavation and operation can be forecasted too. The results prove that the cavern site is suitable for the construction of large-scale underground oil storage caverns for its good water-sealed conditions and high reliability.

scholarly journals Stability analysis of underground water-sealed oil storage caverns in China：A case study

2020 ◽  
Vol 38 (6) ◽  
pp. 2252-2276
Author(s):  
Zhao Xingdong ◽  
Deng Lei ◽  
Zhang Shujing
Keyword(s):  
Numerical Simulation ◽  
Plastic Zone ◽  
Laser Scanning ◽  
Underground Water ◽  
New Method ◽  
3D Laser Scanning ◽  
Oil Storage ◽  
The Stability ◽  
Stability Graph ◽  
Q System

The stability of underground water-sealed oil storage caverns is of great importance for safe excavation and operation. To analyze the scope of the failure zone and underground cavern stability accurately, a new method was developed that integrates the rock tunneling quality index Q-system and stability graph method with 3D laser scanning and numerical simulation. The point cloud data were obtained by 3D laser scanning, and the cavern model was built by using DIMINE software, which directly shows the 3D shape of the cavern. The rock mass physical and mechanical parameters and the corresponding stability coefficients were obtained based on Q-system and stability graph method. The plastic zone distribution and deformation characteristics of surrounding rock were analyzed through numerical simulation. Then, the corresponding relationship between caving zone and plastic zone was determined by comparing the numerical simulation results with the 3D laser scanning contour. The new method provides a reliable way to analyze the stability of the underground water-sealed oil storage cavern and also will helpful to design or optimize the subsequent support.

Quantifying the containment efficiency of underground water-sealed oil storage caverns: Method and case study

2021 ◽  
Vol 110 ◽  
pp. 103797
Author(s):  
Huan Liu ◽  
Liping Qiao ◽  
Shuhong Wang ◽  
Wei Li ◽  
Jie Liu ◽  
...  
Keyword(s):  
Underground Water ◽  
Oil Storage

scholarly journals Dynamic Variation Characteristics of Seawater Intrusion in Underground Water-Sealed Oil Storage Cavern under Island Tidal Environment

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 130 ◽  
Author(s):  
Yutao Li ◽  
Bin Zhang ◽  
Lei Shi ◽  
Yiwei Ye
Keyword(s):  
Seawater Intrusion ◽  
Underground Water ◽  
The Finite Element Method ◽  
Tidal Fluctuation ◽  
Seepage Field ◽  
Water Curtain ◽  
Field Coupling ◽  
Oil Storage ◽  
Variation Characteristics ◽  
Seepage Characteristics

In the case of constructing underground water-sealed oil storage caverns in island environments, the groundwater seepage characteristics are more complicated under the influence of seawater and tidal fluctuations. It also faces problems such as seawater intrusion. This research is based on multi-physical field coupling theory and analyzed the influence of tidal fluctuation and water curtain systems on the temporal-spatial variations of seawater intrusion in an island oil storage cavern in China using the finite element method. The results show that the operation of an underground water-sealed oil storage cavern in an island environment has a risk of inducing seawater intrusion. The tidal fluctuation has a certain degree of influence on the seepage field of the island. The water curtain system can decrease seawater intrusion and reduce the influence of tidal fluctuation on the seepage field inside the island. The research results provide a theoretical basis for the study of seawater intrusion in underground oil storage caverns under island tidal environments.

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