Notice bibliographique
Résumé
Abstract Flexible riser systems are critical for the use of floating production systems in harsh shallow water environments. The use of flexible risers in such environments is driven by large vessel offsets, large vessel motions, and harsh shallow water environmental conditions. Where turret disconnectability is required in ice-infested waters, the riser system must be able to accommodate not only the normal FPSO motions, but also the disconnection and freefall of the spider buoy from the FPSO, and the spider buoy motions in the disconnected position. The Terra Nova riser system is the first large capacity disconnectable riser system in the world and the systems successful design and installation have demonstrated the ability to utilize flexible pipe technology for this type of application. Introduction The Terra Nova field development is located in 94 meters of water off the East Coast of Newfoundland, Canada in the Grand Banks Offshore area. The region has a harsh environment with intense storms occurring frequently in winter and the presence of pack ice and icebergs. Terra Nova is an FPSO development. The Terra Nova FPSO has an overall length of 292.2 meters (277.0 meters between perpendiculars) with a nominal crude oil storage capacity of 960,000 barrels. The first phase of field development utilizes four remote drill centers connected to 34.4 km of static flexible flowlines and umbilicals. Eleven dynamic risers and four dynamic umbilicals provide the link between the static pipelines and the FPSO. Considering future development, the entire riser system accommodates for 14 dynamic risers and 5 dynamic umbilicals. The selection of a floating production design for Terra Nova, the seasonal presence of ice, and the possibility of an iceberg encroaching on the field introduced basic functional requirements for the field's development. These main requirements were the design/fabrication of an ice strengthened vessel and a facility capable of disconnecting from its risers and mooring chains;thus enabling the vessel to move off location to avoid a potential collision with an iceberg. Pursuant to these functional requirements and the overall design requirements, this paper details the challenges imposed on the global design of the Terra Nova riser system and its associated equipment. Furthermore, a synopsis of the riser installation in year 2000 is provided along with lessons learned from the design and installation of the Terra Novariser system. Riser Configuration Selection Three types of riser configurations were considered for the Terra Nova riser system. The first of these configurations was the Pliant Wave® (Fig. 1). The riser's wave configuration is shaped via a distributed buoyancy module section. Following this section the riser is anchored to the seabed via a tether that is connected to a swivel clamp on the riser and a gravity base on the seabed. The riser then descends to the seabed and ultimately is terminated at the flowline connection.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,004 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».