... which shows dependencies on the initial pressure state and temperature. INTRODUCTION The use and operation of underground storage caverns in rock salt allows the storage of large volumes of gases and oil. Considering the operating parameters defined by the rock mechanical dimensioning, underground...

... ABSTRACT: The conversion of existing natural gas storage caverns for hydrogen storage requires the assessment of the mechanical integrity of the wellbore. The additional impact on the wellbore induced by cavern convergence due to long-term operation must be particularly considered. Numerical...

.... (depending on the location in the network) and the maximum excess pressure in in the range of 35 m. Hence, the top of the storage cavern has to be at a level of app. 447 m asl. • The cavern should have a competent rock overburden of at least 100 m to (1) reduce heat losses and temperature effects...

... Abstract Withdrawing gas from gas storage caverns in rock salt causes a decrease in temperature within the cavity. This temperature drop leads to a decrease in the tangential stresses at the cavern wall which may result in macroscopic fracturing in the rock salt mass. The internal gas pressure...

... structural geology stockage souterrain Reservoir Characterization Laurent knowledge management France cavern Paris failure mode storage cavern mega wedge Montreal rock mechanics isrm13 Upstream Oil & Gas 13th international congress Vaskou storage underground storage...

..., the catastrophic accidents about salt storage cavern (e.g., oil/gas seepage, cavern collapse, and ground subsidence) have happened from time to time ever since 1950s. Besides, they usually caused great economic losses and secondary environmental disasters. According to the global statistical events...

...Harmonising Rock Engineering and the Environment Qian & Zhou (eds) © 2012 Taylor & Francis Group, London, ISBN 978-0-415-80444-8 Geological assessment of underground storage cavern sites G. Kannan, R. Rath & A. Nanda Engineers India Limited, New-Delhi, India P. Vaskou Geostock, Rueil-Malmaison...

... Since the early 1970s, Korea has constructed many large-scale tunnels and underground storage caverns in response to the rapid industrial development. The rock mechanics engineers have accumulated valuable experiences in the area of underground space technologies. But they still face technical...

... ratios) as well as during a healing process (under very low stress to strength ratios with high confining pressure). The development of the damage and the stress to strength ratio in the excavation damaged zone (EDZ) of a storage cavern under a minimum internal pressure as well as the development...

... storage (abbreviated as CAES) system has been studied recently as an effective option. In this system, during low consumption time, we drive a compressor and store highly compressed air into storage caverns. In daytime we retrieve and use the stored compressed air for power generation. Foregoing CAES...

... was assumed and passive, fully-grouted rockbolts were considered in the numerical model. The reliability and applicability of the model to the stability analysis for the underground excavation in practice was checked by simulating the behavior of underground crude oil storage caverns. RESUME: Dans cette...

... way. First, water barrier tunnels and water barrier boreholes are excavated prior to excavating the storage caverns. Then, while the caverns are being excavated, water is poured into the water barrier facilities in order to prevent the groundwater level from falling excessively. In the clay grouting...

... ABSTRACT: A number of underground gas storage caverns are being developed in water-saturated rock masses, relying on water pressures to provide containment. However, the gas-water contact in fractured rock is quantitatively different from conventional continuum assumptions. This paper...

... ABSTRACT: This paper is mainly concerned with the influence of stress redistribution induced by excavation on the permeability change and groundwater flow around underground oil storage cavern. The exponential functions which describe the relationships of volumetric and lateral strains...

.... Since the efficiency of the system is supposed to be influenced by the leakage of the air, it is an important subject to study the prevention of the air leakage from the storage caverns. Especially in the case that the compressed air is stored in unlined rock caverns by means of underground water flow...

... SUMMARY At the Porvoo Works of Neste Oy - Finland's national oil company - underground oil storage caverns of total capacity, of 5.2 million m 3 are in operation. In April 1986 the implementation of two additional caverns totalling 150.000 m 3 in volume was initiated. The 37 individual...

... social responsibility displacement borehole wind energy Upstream Oil & Gas hot water rock cavern Research Foundation sustainable development renewable energy programme research programme heated water Sweden instrument excavation tunnel Stockholm storage cavern construction...

... SUMMARY: During May, June and July 1977 the Rafnes 100,000 m 3 propane storage cavern in unlined rock was tested with nitrogen gas at a maximum pressure of 0.79 MPa (7.9 bars abs.). After satisfactory performance with no leakage observed the cavern was filled up with propane. The storage has...