Designing and Building a Buried High Integrity Pipeline for 150°C Emulsion Transportation
Notice bibliographique
Résumé
Abstract This SAGD development is a tie-back extension to an existing upgrader. Two parallel pipelines ship water and emulsion between the two facilities: water is piped from the upgrader to the SAGD wellpads at 130°C where it is heated through OTSGs before injection into the wells and a water/bitumen emulsion is then retrieved from the wells, to be piped back to the upgrader at 150°C where the bitumen is separated out. The terrain between the two facilities is difficult with ca. 60% muskeg and several creeks, railroads and highways that require HDDs (Horizontal Direction Drill). Given the high design temperatures and the mostly non-competent soil, an electrically traced ITP pipe-in-pipe was selected as the most robust solution. The following advantages in operation, construction and for integrity surveillance were identified by the operator: Extremely efficient thermal insulationUnlimited shutdown capabilitySelf-anchoring of the inner pipe to the outer pipe, reducing reliance on soil propertiesSimple pre-tensioning using the heat-tracing systemReduced thermal expansion, eliminating expansion loopsNegative buoyancy, eliminating the need for anchoring the pipelineHigh integrity of the jacket pipe with ○Leak before spill detection capability○Second-to-none leak detection sensitivity (x1000 relative to volumetric methods) A key learning of construction during the winter of 2013 was that up to 1 km per day could be built. The presentation will detail the system key elements, the rationale for its design and provide the lessons learned from the wintertime installation in a typical northern Alberta SAGD development, and in particular how the electrical heat tracing provides schedule control for the pre-tensioning. The technology has the potential to significantly change the operation of oil/bitumen fields by eliminating the requirement for diluent. The heat tracing technology combined with an extremely efficient insulation allows transport of the hot fluids over unlimited distances. In the wider picture, the pipe-in-pipe technology provides a means to achieve an extremely sensitive pipeline integrity surveillance with almost instantaneous detection of all but the smallest leaks (which will be detected eventually); it could be proposed as a reliable solution for difficult areas where enhanced scrutiny is deemed necessary, such as wetlands, HDDs, unstable terrain etc., at an installed cost that is not significantly higher than for a simple pipeline. During the winter of 2012-2013, a first application of an Electrically Heat Traced Flowline (EHTF) based on pipe-in-pipe (PIP) technology was installed in the Fort McMurray area. It consists of two buried high-temperature lines to be operated by a major Canadian Oil&Gas Company at design temperatures of respectively 110°C and 150°C. This technology has been selected by the operator because of advantages inherent to the technology and the project execution has demonstrated that this novel solution is compatible with the severe weather conditions and areas of northern Alberta. Moreover, careful planning and use of the heat tracing capability of the pipelines provides simple schedule control of the required pre-stressing of the pipelines prior to burial. The technology has the potential to significantly change the operation of oil/bitumen fields by eliminating the requirement for diluent and providing a means of tying satellite developments back to existing facilities. The heat tracing technology combined with an extremely efficient insulation actually allows transport of the hot fluids over unlimited distances. From an integrity and environmental perspective, the pipe-in-pipe technology provides a means to achieve extremely sensitive pipeline integrity surveillance with almost instantaneous detection of all but the smallest leaks (which will be detected eventually); it could even be proposed as a safety feature on non-thermal pipelines for difficult areas where enhanced scrutiny is deemed necessary, such as wetlands, HDDs, unstable terrain etc., at an installed cost that is not significantly higher than for a simple pipeline. The articles details the system key elements, the rationale for its design and provide the lessons learned from the wintertime installation in a typical northern Alberta SAGD development, and in particular how the electrical heat tracing provides a simple means of controlling pre-tensioning.
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 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 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 ».