Marine riser emergency disconnection analysis using scalar elements for tensioner modelling
Applied Ocean Research, 2016Abstract This work proposes nonlinear parallel spring-damper scalar elements in series with a rigid beam element to represent drilling riser tensioner behavior during an emergency disconnection scenario in global riser analysis. The software package used was Orcaflex. This is a simpler approach than the more complex, full hydraulic-pneumatic-mechanic
Ricardo Franciss
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Frequency Emergency Control for Large-scale Disconnection of Renewable Energy
2021 IEEE 5th Conference on Energy Internet and Energy System Integration (EI2), 2021Liang Yao, Xiaoteng Ma
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Dynamic recoil response of tensioner and riser coupled in an emergency disconnection scenario
Ocean Engineering, 2022Na Qiu, Yuanjiang Chang, Chaowei Li
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An experimental study of emergency cooling conditions in RBMK reactors on load disconnection
Soviet Atomic Energy, 1984S P Kuznetsov, Kuznetsov S P
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A Deepwater Riser Emergency Disconnect Antirecoil System
Journal of Petroleum Technology, 1993Summary During drilling in deep water, very high tensions must be used to control the riser, so a large amount of energy is stored in the riser and tensioning system. If the riser and stored energy are not controlled during an unplanned disconnect of the riser from the subsea blowout preventer (BOP), which would ...
C.J. Hock, R.D. Young
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Unplanned Disconnects in Deepwater Drilling: Prevention Measures and Emergency Response
SPE/IADC Drilling Conference, 2001Abstract In 2000, two unplanned disconnects of the Lower Marine Riser Package (LMRP) occurred on deepwater rigs in the Gulf of Mexico. Both were attributed to human error. The IADC Deepwater Well Control Task Force reconvened to study this problem and investigate preventative measures.
D. Bruce +5 more
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Barrier Analysis of Emergency Disconnect on Dp Mobile Offshore Drilling Units
Volume 2A: Structures, Safety, and Reliability, 2020Abstract Technical, operational and organization barrier elements related to the emergency disconnect on dynamically positioned mobile offshore drilling units on the Norwegian Continental Shelf are identified. Position loss scenarios are analyzed based on the published station-keeping incidents by IMCA (International Marine Contractors ...
Haibo Chen +3 more
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Disconnects between expectations and deliverables among emergency responders
Journal of Emergency Management, 2004-
Richard Besserman, MD, MS +3 more
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Stopping, Emergency Stopping and Disconnecting Machines from Electricity
AUTOMATYKA, ELEKTRYKA, ZAKLOCENIA, 2020The work highlights one of the most important aspects of machinery safety, which is stopping. Due to their specificity, the Machinery Directive distinguishes two stopping modes: normal (technological) and emergency, and separate disconnection from the power supply.
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Methodology for Recoil Analysis of Emergency Disconnection Drilling Riser in a Deepwater Environment
Abu Dhabi International Petroleum Exhibition & Conference, 2019Abstract In deepwater drilling, it is inevitable to disconnect the riser from the Low Marine Riser Package (LMRP) with the blowout preventer (BOP) under some extreme operating conditions. Since the riser is in tensile state under normal working conditions, elastic potential energy is stored in the riser.
Yanbin Wang, Deli Gao, Jinduo Wang
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