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Keywords: floe
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Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29167-MS
... management. While global wave and iceberg actions are typically much more severe than sea-ice actions, it is necessary to determine whether sea-ice actions combined with wave loads could be significant. The Grand Banks is a marginal sea-ice zone, with relatively low sea-ice concentrations and small floe...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29157-MS
... Abstract The stationkeeping performance prediction of a Dynamic Positioning (DP) vessel greatly depends on the accurate modelling of the ice forces, which in turn depends on managed ice field characteristics (ice concentration, floe thickness, floe size, ice drift speed and direction and...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29166-MS
... small floes and limited concentrations. The current practice for semi-submersible drilling operations on the Grand Banks is to avoid contact with pack ice by disconnecting and moving off-station in the event of an ice incursion. From a global loads perspective this may be unnecessary, given that the...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27347-MS
... for numerical modeling of ice management, the challenges, and how field trial data can support the development of effective simulation tools. ice management pattern ice condition effectiveness coefficient ice management trial ice management ice management operation operation floe...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27357-MS
... another. Model extensions for relative current drag and friction can be added on the cell averaged level. The resulting 2D hybrid continuum model yields promising first results: The computational speed is sufficient to simulate large ice fields (>5km squared, >5,000 ice floes) at more than real...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27430-MS
... characteristics (floe size, floe thickness, inclusion of brash ice and small ice pieces, ice drift speed and direction) and DP system (gain set-ups). Over the years, many engineers have been using numerical and experimental tools to assess the effect of these parameters. More recently, a comprehensive series of...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27407-MS
.... Based on an adapted sensor calibration the measurement results are presented as well as the analysis of ship ice floe interaction is discribed. At the end trail experiences of the measurement- system are reflected and further prospect for ice force measurements are given. ccg amundsen ship...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27486-MS
... mission azimuth thruster ice trial science operation scientist ice condition full scale trial operational capability level ice deployment research vessel thruster floe operation icebreaker University-National Oceanographic Laboratory System (UNOLS) Website - https://www.unols.org...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27481-MS
... Abstract Moored upward looking sonars (ULS) have been used extensively for over twenty years to measure sea ice draft thicknesses and ice keel widths. They have rarely been used to analyze ice floe sizes. In 2015, Statoil Canada, ArcticNet, the Research & Development Corporation of...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25565-MS
... provides no restoring moment to vessel's yaw. In such system, thrusters would be used to provide damping and to apply the corrective moment that controls the heading of the vessel. The pack ice cover is assumed to consist of managed floes of sizes ranging from 30 m to 50 m, and with a uniform thickness of...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25517-MS
... Abstract The search for hydrocarbons in deep Arctic waters requires the use of drillships and floating production units (FPUs). Typically, these units require protection by using ice management, e.g. icebreakers battling large ice floes followed by icebreakers downstream that cut the ice into...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25520-MS
... floe probability penetration step strength sea ice load reserves evaluation iso 19906 implementation multi-year sea ice load ice load breakout force ramp-up probabilistic assessment upstream oil & gas multi-year floe sil technology conference reservoir simulation breakout force...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24548-MS
... cannot be larger than the force due to ice in contact with the structure face failing (defined as the limit stress When the structure is impacted by a large floe or ridge, the load on the structure may be less than the limit stress if the driving force due to wind, current and surrounding ice on the...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24549-MS
... model, wherein the numerical model enables modelling of the arctic floater the mooring and different managed ice conditions. The managed ice is created as convex ice floes with comparable size ice floes used in model scale tests. A number of simulations were compared with and validated against results...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24645-MS
... contains hundreds of discrete and interacting ice floes. A simple vessel is modeled as it navigates through the domain. Each ship-ice collision is modeled, as is every ice-ice contact. Each ship-ice collision event is logged, along with all relevant ice and ship data. Thousands of collisions are logged as...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24647-MS
... vessel, as well as its surge, sway and yaw responses. The drillship assumed in this simulation work has a length of 230 m, a beam of 42 m, and a mass of 100,000 Mt. Simulations examine a case representing a moored vessel in a managed ice field consisting of 50 m floes that are 1 m in thickness, moving at...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23761-MS
... theice loads in this region due to a clear lack of knowledge of the pack icedriving forces. This pack ice driving force is one of the primarymechanisms that dictate how much force the ice can exert on an offshoreplatform, even if large multi-year ice floes are present. Improvedknowledge of this force...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23839-MS
... Abstract Hydrocarbon exploration in the Arctic environment will very much depend onour ability to continuously track ice floes and forecast ice events that maygenerate dangerous loads on exploration and production infrastructure. Wepresent a first-of-its-kind computational framework which is...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23824-MS
... 1975-1976 AIDJEX (Arctic Ice Dynamics JointExperiment) field project for model calibration and focused on modeling freeice drift of individual floes. ice drift forecasting mechanism amundsen otc 23824 time history technology conference drift path reservoir simulation sea ice drift...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23705-MS
... landfast ice on a freshwater lake. Thechannel was about 55m long and 32m wide and the ice was between 300mm and 400mmthick (with an average measured thickness of 340mm). The ice that was cut outof the level ice sheet to make the channel was further cut into floes of twobasic sizes, the smaller about 1.65m...

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