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Keywords: tunnel
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Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 2023
Paper Number: OTC-32444-MS
... and compiled to add depth; however, the end result is a more detailed understanding of precise objects or structures. Typically, these types of underwater models are used within benthic seafloor mapping, dam/bridge/tunnel inspections, surveying canals and channels, or assessing offshore energy structures...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29638-MS
... draft based on the original T&R Bulletin 5-4 (1988) has been edited with comments from both the OC-8 SNAME committee and outside experts (including wind tunnel facilities) several times in the past three years. The overview of the guidelines presents the requirements for a successful test...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 6–9, 2019
Paper Number: OTC-29289-MS
..., which encompassed three available wind load estimation methods: empirical building block procedures, wind tunnel testing, and Computational Fluid Dynamics (CFD). To permit an ‘apples-to-apples’ comparison, the same representative semisubmersible design was used by all participants, including a single...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 4–7, 2015
Paper Number: OTC-25939-MS
... of how these tools and methodologies have been employed in the design process of Marine and Offshore structures will be presented. Validations compared to tank tests and wind tunnels will be presented for damping coefficients, green water impact, aerodynamic coefficients and non-linear wave loading...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2012
Paper Number: OTC-23409-MS
... thevulnerability to liquefaction-induced uplift and lateral displacements of anexisting relatively light (i.e., relative to the surrounding soil) immersedtube tunnel in California. The studies were performed to guide decisionsregarding the need for retrofit and subsequently to select optimal mitigationmeasures...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2010
Paper Number: OTC-20858-MS
... of Los Angeles County (LACSD) are evaluating the feasibility of a new tunnel and ocean outfall offshore the Port of Los Angeles, California. This project serves as a case study on the essential role of the GIS database in storing and analyzing various types of data, allowing integrated marine geohazard...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2007
Paper Number: OTC-18962-MS
... and locations were evaluated. langeled project tunnel operation langeled north construction installation statoil pipeline pipeline installation operator easington contractor otc 18962 subsea pipeline terminal nyhamna platform offshore pipeline tie-in valve sleipner upstream oil...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 2004
Paper Number: OTC-16714-MS
... oil & gas tunnel application internal gravel pack screen selection productivity expandable sand screen sand control completion installation and operations OTC 16714 Towards the Expandable Reservoir Completion: The Case for Open-hole Completions Nicholas Gee, SPE, Colin Jones, SPE...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 30–May 3, 2001
Paper Number: OTC-13282-MS
... as reducing the risk of early water production compromising gas production. assembly tunnel packer upstream oil & gas screen selection permeability expansion cone otc 13282 history expandable sand screen perforation tunnel clinton terry-chevron usa offshore technology conference...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1995
Paper Number: OTC-7883-MS
... ABSTRACT Subsea approaches to the Norwegian coast are characterised by very rugged topography. Landfall of offshore pipelines therefore often require dedicated subsea tunnel and pipeline tie-in concepts. To land the 36" and 40" offshore pipe[intw associated with the Troll Phase I development...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1993
Paper Number: OTC-7141-MS
... ABSTRACT Construction is currently underway on a bridge-tunnel across Tokyo Bay, Japan. The tunnel segment contains a concrete structure "island" of approx/mate/y 175 m (377 ft) diameter, located in 28 m (92 ft) water depth, for ventilation and access to the tunnel during construction. Due...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 3–6, 1993
Paper Number: OTC-7299-MS
... Abstract Gas from the North Sea is processed at Karsw, Western Norway, before it isexported to the European Continent. The pipelines are placed in a 600 metresconcrete tunnel, consisting of 5 bridge elements, at the shore approach. Cracks developed in the foundations and the elements shortly...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 7–10, 1990
Paper Number: OTC-6386-MS
... ABSTRACT The design and construction planning of deepwater tunneled ocean outfalls involves both underground and offshore engineering. In particular, the demands placed on the outfall seabed riser structures requires consideration of many of the engineering disciplines associated...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1989
Paper Number: OTC-6142-MS
... ABSTRACT The Oseberg Transportation System includes a crude oil pipeline placed in water depths up to 357m, connecting the Oseberg Field in the North Sea with a storage terminal in Norway. In the eastern slope of the Norwegian Trench, gravel sleepers were placed and a shore approach tunnel...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 1–4, 1989
Paper Number: OTC-6017-MS
... ABSTRACT The Water Board of Sydney, Australia has begun the construction of three submarine ocean out falls to handle the sewage disposal needs of the area for the next 100 years. The outfalls consist of three separate underground tunnels, extending up to 3.1 miles (5 km) offshore which...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5525-MS
... ABSTRACT The paper describes a preliminary wind-tunnel investigation of the below-deck aerodynamic climate of a TLP. The general features of multi-cylinder flow are discussed. The technique of pulsed l a s e r velocimetry is described and examples of its application to a 1:300 model platform...
Proceedings Papers

Paper presented at the Offshore Technology Conference, April 27–30, 1987
Paper Number: OTC-5599-MS
... tests was completed. Five different spherical indenters were used resulting in a wide range of maximum indenter contact area (0.02-3.0 square meters) A total of twenty-one such tests were performed in tunnels excavated into a grounded iceberg near Pond Inlet on Baffin Island. A closed-loop, feedback...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 5–8, 1986
Paper Number: OTC-5174-MS
... ABSTRACT A detailed parametric study of two simple semi-submersible platform models was carried out in a boundary layer wind tunnel. The results identified the trends of behaviour for this class of platform over a range of platform configurations. Parameters considered included freeboard...

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