Results 211 to 220 of about 6,666 (250)

Rethinking the sphenoparietal sinus: implications for lesser sphenoid wing dural arteriovenous fistulas. Illustrative cases. [PDF]

J Neurosurg Case Lessons
Serioli S, Seguini S, Quilici L, Lunghi A, Gritti P, Ciccone A, Giussani CG, Lanterna LA.   +7 more
europepmc   +1 more source

Hemispherotomy for Drug-Resistant Epilepsy in a Low-Resource Setting: Surgical Outcomes and Quality of Life in 23 Children Treated in a Hybrid Program in Panama.

Pediatr Neurosurg
Rhodenhiser EG, Bonda D, Baez C, Weiss HK, Dastagirzada Y, Aranda G, Bruggeman L, Grover A, Rodgers SD, Kuzniecky R, Zelenka-Kuzniecky Y, Weiner HL, Hidalgo ET.   +12 more
europepmc   +1 more source

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Emergency Disconnection Guidelines

OTC Brasil, 2013
Abstract The construction of petroleum wells is becoming more and more complex and challenger. Drilling and completion in deep and ultra deep water requires use of dynamic positioning rigs increasingly sophisticated. Despite all the technology, an emergency disconnection may occurs at any time in dynamic positioning
Diogo Fonseca, Rubens Ribeiro Paula Junior   +1 more
exaly   +2 more sources

Study on mud discharge after emergency disconnection of deepwater drilling risers

Journal of Petroleum Science and Engineering, 2020
Abstract Mud is often discharged into seawater after emergency disconnection of risers in offshore oil and gas drilling engineering. The discharged mud needs to be simulated accurately since it can produce a huge load on risers. Several mud discharge models have been proposed, such as Young's slug model, SFM model, WFC model and one-dimensional ...
Guoming Chen
exaly   +2 more sources

Marine riser emergency disconnection analysis using scalar elements for tensioner modelling

Applied Ocean Research, 2016
Abstract 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
Rafael Guimarães Pestana, Francisco Edward Roveri, Ricardo Franciss, Gilberto Bruno Ellwanger   +3 more
exaly   +2 more sources

Frequency Emergency Control for Large-scale Disconnection of Renewable Energy

2021 IEEE 5th Conference on Energy Internet and Energy System Integration (EI2), 2021
Xiaoteng Ma, Liang Yao
exaly   +2 more sources

4899776 Method and apparatus for emergency disconnection of a fluid petroleum product transfer arm

Marine Pollution Bulletin, 1990
A method and apparatus for effecting emergency disconnection of a fluid transfer arm from a marine tanker manifold or other vessel to which the arm is connected, including means to purge the arm of fluid prior to disconnection in order to prevent fluid spillage.
exaly   +2 more sources

Dynamic recoil response of tensioner and riser coupled in an emergency disconnection scenario

Ocean Engineering, 2022
Guoming Chen, Chaowei Li, Na Qiu
exaly   +2 more sources