Topic
Overpressure
About: Overpressure is a research topic. Over the lifetime, 3236 publications have been published within this topic receiving 34648 citations.
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TL;DR: In this article, a new approach was proposed for predicting lightning-induced mechanical damage using the shock wave overpressure (SWO) due to lightning arc channel expansion and also its equivalent air blast overpressure due to an explosion of chemical potential energy in AS4/3506 carbon/epoxy laminates.
19 citations
TL;DR: In this article, the authors investigated the effect of unbonded prestressed ultra-high performance reinforced concrete slab (UPUHPRCS) against gas explosion in buried utility tunnel.
19 citations
TL;DR: In this article, a new method was proposed for suppressing gas-explosion propagation in a tunnel by using a vacuum chamber, which can absorb the explosion wave and explosion energy as much as possible at the beginning of the gas explosion and when the vacuum chamber is used the closer it is to the ignition source the more significant the suppression effect.
19 citations
TL;DR: In this paper, a high-resolution flow model of a 60 km 2 area straddling the pressure compartments is used to investigate the main parameters controlling pressure compartmentalisation in the North Sea.
Abstract: Two discrete pressure cells with a 128 bar pressure difference within a 100 m thick Tarbert reservoir interval are separated by a fault with a throw of 50 m. Given that high permeability reservoir rocks are juxtaposed across the fault, the observed across-fault pressure difference cannot be maintained for reasonable fault rock permeabilities over geologically significant periods (> 10,000 years). A high resolution flow model of a 60 km 2 area straddling the pressure compartments is used to investigate the main parameters controlling pressure compartmentalisation. Single-phase hydrodynamic flow modelling demonstrates that the observed pressure distribution requires low across-fault transmissibilities and relatively high hydrodynamic flow rates (10 m 3 /day). The most significant contributor to the high flow rates is gas generation and migration into the high pressure cell. Low fault transmissibilities are attributed either to shale smearing or, less likely, to extensive quartz cementation of the fault rock. Our study shows that pressure compartmentalisation in the North Sea can be controlled by relatively small displacement faults and highlights the importance of high resolution 3-D geological models in understanding overpressure distribution.
19 citations
TL;DR: In this paper, a new method, simple and easy to use, is presented which only requires the vessel filling degree and the temperature at failure as input variables to estimate this energy.
18 citations