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Norwegian oil and gas storage in rock caverns-Technology based on experience from hydropower development

Norwegian oil and gas storage in rock cavernse——Technology based on experience from hydropower development

作     者:Bjørn Nilsen Bjørn Nilsen

作者机构:Department of Geoscience and PetroleumNorwegian University of Science and Technology(NTNU)TrondheimNorway 

出 版 物:《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报(英文版))

年 卷 期:2021年第13卷第2期

页      面:479-486页

核心收录:

学科分类:080706[工学-化工过程机械] 08[工学] 081501[工学-水文学及水资源] 0807[工学-动力工程及工程热物理] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0814[工学-土木工程] 

主  题:Underground storage Oil Gas Liquefied petroleum gas(LPG) Hydropower Air cushion chamber 

摘      要:Underground storage in rock caverns is widely used in Norway for many different petroleum products,such as crude oil,fuel,propane and butane.Basically,the caverns for such storages are unlined,i.***.containment is ensured without using any steel lining or membrane.The main basis for the storage technology originates from the extensive hydropower development in Norway.As part of this activity,about 4500 km of tunnels and shafts have been excavated,and around 200 large powerhouse caverns have been constructed.The hydropower tunnels are mainly unlined,with hydrostatic water pressure on unlined rock of up to 1000 m.Some of the projects also include air cushion chambers with volumes of up to 1×10^(5)m^(3)and air pressure up to 7.7 MPa.Many lessons which are valuable also for underground oil and gas storage have been learnt from these projects.For a storage project to become successful,systematic,well planned design and ground investigation procedures are crucial.The main steps of the design procedure are first to define the optimum location of the project,and then to optimize orientation,shape/geometry and dimensions of caverns and tunnels.As part of the procedure,ground investigations have to be carried out at several steps integrated with the progress of design.The investigation and design procedures,and the great significance of these for the project to become successful will be discussed.Case examples of oil and gas storage in unlined rock caverns are given,illustrating the relevancy of experience from high-pressure hydropower projects for planning and design of unlined caverns for oil and gas storage.

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