Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Subsea pipelines"”.
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Estimation of Wax Deposition in Subsea Pipelines
… model forecasting wax deposition rate within subsea production pipelines. This research employs experiments from 1-D and 2-D multiphase flow that have been successfully matched by a combined physics model on a closed-loop structure where the measuring length was 2.5m and the pipe inside …
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Estimation of Wax Deposition in Subsea Pipelines
… model forecasting wax deposition rate within subsea production pipelines. This research employs experiments from 1-D and 2-D multiphase flow that have been successfully matched by a combined physics model on a closed-loop structure where the measuring length was 2.5m and the pipe inside …
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Pipe-Soil Interaction on a Clay Seabed
Subsea pipelines form an integral part of the infrastructure associated with offshore oil and gas developments. These pipelines fulfill a range of functions from linking extraction wells to other subsea infrastructure to transporting products onshore, or to a central processing facility. Ancillary …
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Improved operational limits for offshore pipelay vessels
<p>Subsea pipelines are used extensively throughout the world’s oceans to transport oil and gas from offshore facilities to land, often hundreds of miles. These pipelines range in diameter from three to sixty inches and are installed in deeper depths every year, currently as deep as 2,900 meters. …
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Application of superparamagnetic nanoparticle-based heating for non-abrasive removal of wax deposits from subsea oil pipelines
… hydrate and wax deposits on the inner surface of pipelines. Commonly used methods for removal of deposits from pipelines are chemical injection and foam or gel pigs, which face several limitations. In our work, an application to use superparamagnetic nanoparticle-based heating for flow assurance, …
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Computational fluid dynamics modelling of pipeline on-bottom stability.
Subsea pipelines are subjected to wave and steady current loads which cause pipeline stability problems. Current knowledge and understanding on the pipeline on-bottom stability is based on the research programmes from the 1980s such as the Pipeline Stability Design Project (PIPESTAB) and American …
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Capillary forces and wetting dynamics by diffuse-interface modeling
… where gas hydrates forming large clusters in subsea pipelines during crude oil transportation is a major concern. The dynamics of such systems is also of great interest from a fundamental perspective. Indeed describing non-equilibrium situations involving a 3-phase contact line is a …
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Multiphase flow modeling and deposition of hydrates in oil and gas pipelines
… prevailing flow-assurance problems in deepwater subsea oil and gas operations. Due to the potentially severe economic impact of forming a gas hydrate plug, it is critical to develop gas hydrate formation models, which predict temporal and spatial gas hydrate plug formation in flowlines. Gas …
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Multiphase flow modeling and deposition of hydrates in oil and gas pipelines
… prevailing flow-assurance problems in deepwater subsea oil and gas operations. Due to the potentially severe economic impact of forming a gas hydrate plug, it is critical to develop gas hydrate formation models, which predict temporal and spatial gas hydrate plug formation in flowlines. Gas …