Results 51 to 60 of about 1,280 (210)

Coupling of marine riser and tensioner system [PDF]

open access: yes, 2011
A coupled model of a marine riser and a tensioner system is built. The riser is modeled using the multi-body dynamics program MSC Adams, and the tensioner system using the powerful controls and systems simulation tool, MSC Easy5.
Olssøn, Tor Trainer
core   +1 more source

Marine Riser

open access: yes, 2022
Niz usponskih cijevi predstavlja hermetičnu i integriranu vezu postrojenja koje se nalazi na površini mora te ušća bušotine na morskom dnu tijekom cijelog životnog vijeka naftnog/plinskog polja. Pomnim odabirom komponenata niza i njihovom dimenzioniranju
Krištafor, Zdenko   +2 more
core  

Experimental Study on Two-phase Flow and Vibration Characteristics of Marine Riser

open access: yesShiyou jixie, 2016
In order to identify flow patterns that may occur in the marine riser system and study the dynamic response of the riser under different flow patterns,two-phase flow pressure fluctuations in the riser and resulting riser vibration displacement were ...
Liu Chang   +4 more
doaj  

Mitigation of Vortex-Induced Vibration of Cylinders Using Cactus-Shaped Cross Sections in Subcritical Flow

open access: yesJournal of Marine Science and Engineering, 2021
Flexible cylinders, such as marine risers, often experience sustained vortex-induced vibrations (VIVs). Installing helical strakes on a riser is the most widely used technique to mitigate VIVs. This study was inspired by the giant Saguaro Cacti which can
Jialu Wang   +3 more
doaj   +1 more source

Natural Frequencies Analysis of Hyperstatic Integration Marine Drilling Riser

open access: yes, 2010
The marine drilling riser is a key outfit which links the wellhead above seabed with the drilling vessel together and it is also a fluid passageway during drilling.
Wei Zhang, Deli Gao
core   +1 more source

Calculation method of riser top tension in deep water drilling

open access: yesPetroleum Exploration and Development, 2015
Through mechanical analysis, a calculation method which meets the requirements of both the riser stability and the bottom over-pull margin was deduced. It was verified by an example of ultra deepwater well in South China Sea, and compared with two other ...
Jin YANG   +5 more
doaj   +1 more source

Improved VIV Response Prediction Using Adaptive Parameters and Data Clustering

open access: yesJournal of Marine Science and Engineering, 2020
Slender marine structures such as deep-water riser systems are continuously exposed to currents, leading to vortex-induced vibrations (VIV) of the structure. This may result in amplified drag loads and fast accumulation of fatigue damage.
Jie Wu   +5 more
doaj   +1 more source

Experimental study on vortex induced vibration of risers with fairing considering wake interference

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2017
Vortex Induced Vibration (VIV) is a typical flow-structure interference phenomenon which causes an unsteady flow pattern due to vortex shedding at or near the structure's natural frequency leading to resonant vibrations.
Min Lou, Wu-gang Wu, Peng Chen
doaj   +1 more source

CO2 corrosion behavior of high-strength martensitic steel for marine riser exposed to CO2-saturated salt solution

open access: yesMaterials Research Express, 2021
CO _2 corrosion is an inevitable problem of marine riser steel for oil and gas transportation. In the following work, the corrosion behavior was revealed in terms of microstructure characterization, corrosion kinetic curves, morphology and phase ...
Dazheng Zhang   +7 more
doaj   +1 more source

Severe slugging and unstable flows in an S-shaped riser [PDF]

open access: yes, 2002
Severe slugging and unstable flow in an S-Shaped riser has been investigated in three research themes - experiments, criterion modelling and transient code modelling.
Montgomery, J. A.
core  

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