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Keywords: keel
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Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29126-MS
... flowline due to interaction with free-floating and gouging icebergs. Large deformation finite element analysis is utilized to simulate the iceberg-flowline-soil interaction scenario. The iceberg keel is idealized with shape and dimensions based on analysis of recent iceberg profiles. A sensitivity study...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29097-MS
... of a free-floating iceberg interacting with a flowline placed on the seafloor. Two scenarios were considered in this testing program. The first focused on understanding the local iceberg failure processes and the second evaluated the transverse flowline motion when a free-floating keel snags a flexible pipe...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29107-MS
...-Arctic. Important components of a ridge creating ice loads are the consolidated layer at the surface (which is considered as solid ice) and the ridge keel below consisting of ice rubble, but much thicker. The load due to the consolidated layer is usually derived as if it is thick level ice. On a cone...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, November 5–7, 2018
Paper Number: OTC-29176-MS
... Abstract Numerous field studies show that mature first-year (FY) ridges consist of a solid ice consolidated layer (CL) below which is a keel of ice rubble. The CL is generally thicker than the ambient level ice. With the decrease in multi-year ice in the Arctic, FY ridges may become...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27359-MS
... to the interaction of the iceberg with the seabed, i.e. (2) where FIS(t) will depend on the location and slope of the seabed and the position of the iceberg keel with respect to both the iceberg CG and the seabed. For determining the response of the iceberg to a towing force, it is necessary to consider the forces...
Proceedings Papers

Paper presented at the Arctic Technology Conference, October 24–26, 2016
Paper Number: OTC-27363-MS
... recrystallization bertha interaction boulder scour mark modification keel ice block hodgson upstream oil & gas offshore technology conference pisce iv dive seafloor striation technology conference keel ice iceberg keel experiment fracture iceberg skip mark C-CORE...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, March 23–25, 2015
Paper Number: OTC-25557-MS
... measurements to be a complete and robust characterization of potentially hazardous features. In this paper, we apply algorithms that detect different types of sea ice features: large singular ice keels, hummocky ice, thick brash ice, old or multi-year ice and marine glacial ice (icebergs and ice islands...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24553-MS
... OTC 24553 An Overview of the Development of Ice Ridge Keel Strengths Test Program Eleanor Bailey, CARD; Jonathon Bruce, C-CORE; Ahmed Derradji-Aouat, Michael Lau, National Research Council of Canada Copyright 2014, Offshore Technology Conference This paper was prepared for presentation...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24603-MS
... preset gouge depth upstream oil & gas interaction soil deformation th international conference keel modeling & simulation ice gouging offshore pipeline database engineering source paper international conference numerical model subgouge soil deformation attack angle...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24604-MS
... was selected and vertical loads were monitored; the other with a pre-set vertical load and where keel heaving is allowed. Soil type and normal versus high simulated gravity are two other decisive parameters in test design. The results of this compilation are summarized. Parametric analysis of variables...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24605-MS
... of ice gouging has been developed and exercised to better understand how the environmental conditions affect the gouging process. Further, numerical simulations of the keel-soil-pipe interaction have been performed, relating to the input and output of the ice gouging model. The ice gouging simulations...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 10–12, 2014
Paper Number: OTC-24629-MS
... Abstract Typical rock berms used to protect submarine pipelines may be damaged under shear by a first year grounded ice rubble keel. Physical model tests in a centrifuge have indicated that such damage occurs under loads less than those typical of actual design conditions. These novel tests...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23792-MS
... OTC 23792 Physical Testing Method to Study Ice Keel Strength Limits During a Gouging Process Jim Bruce, C-CORE, Gerry Piercey, C-CORE, Andrew Macneill,C-CORE, Ryan Phillips, C-CORE, and Ahmed Derradji, NRC Copyright 2012, Offshore Technology Conference This paper was prepared for presentation...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23811-MS
... processesbased on the relationship of maximum ice thickness as a function ofsimultaneous values of undeformed ice thickness. Using the more extensive ULSice keel data sets now available, these methods were re-evaluated and updated. Similar analyses were carried out on ice thickness measurements obtained...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23789-MS
... Abstract A simple, rectangular sub-surface caisson was evaluated using physical andnumerical modeling to develop a method for protecting subsea installationsagainst scouring keels of icebergs on the Grand Banks. This protection strategywas developed to assess the feasibility of the structure...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23790-MS
... Abstract The Pipeline Ice Risk Assessment & Mitigation JIP (PIRAM) developed aset of engineering models and design procedures for implementation intoindustry best practices for risk mitigation and protection of pipelineinfrastructure from ice keel loading. The models established...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, December 3–5, 2012
Paper Number: OTC-23764-MS
... and the required further developments for thecurrent technology to enable the industry to better evaluate the risk of icegouging. interaction sub-gouge deformation upstream oil & gas international conference horizontal displacement test data keel displacement centrifuge test soil displacement...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22109-MS
... Abstract Offshore Arctic pipelines must be designed to withstand unique loading conditions of seafloor gouging by drifting sea ice ridge keels and icebergs. Due to the high cost of offshore pipeline burial, determination of the required burial depth is a critical factor for economical designs...
Proceedings Papers

Paper presented at the OTC Arctic Technology Conference, February 7–9, 2011
Paper Number: OTC-22136-MS
... frequency subsea system moon pool otc 22136 hull natural period water depth riser mooring system resonance turret keel operation turret buoy stability upstream oil & gas spectrum fpso water plane area OTC 22136 Circular FPSO for Arctic Deepwater Nagan Srinivasan, Consultant...

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