Pore-Level Investigation of Heavy Oil and Bitumen Recovery Using Hybrid SAGD Process
Notice bibliographique
Résumé
Pore-Level Investigation of Heavy Oil and Bitumen Recovery Using Hybrid SAGD Process O.. Mohammadzadeh; O.. Mohammadzadeh University of Waterloo Search for other works by this author on: This Site Google Scholar N.. Rezaei; N.. Rezaei University of Waterloo Search for other works by this author on: This Site Google Scholar I.. Chatzis I.. Chatzis University of Waterloo Search for other works by this author on: This Site Google Scholar Paper presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, April 2010. Paper Number: SPE-130011-MS https://doi.org/10.2118/130011-MS Published: April 24 2010 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Mohammadzadeh, O.. , Rezaei, N.. , and I.. Chatzis. "Pore-Level Investigation of Heavy Oil and Bitumen Recovery Using Hybrid SAGD Process." Paper presented at the SPE Improved Oil Recovery Symposium, Tulsa, Oklahoma, USA, April 2010. doi: https://doi.org/10.2118/130011-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu nav search search input Search input auto suggest search filter All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE Improved Oil Recovery Conference Search Advanced Search Abstract Attempts have been made to reduce the energy requirements of a Steam Assisted Gravity Drainage (SAGD) project through coupled thermal-solvent processes such as hybrid SAGD, ES-SAGD, SAP and SAS. The augmented process brings superior features to the SAGD process in terms of reduced energy requirement, enhanced quality of produced oil and also improved oil recoveries. The pore-level recovery mechanisms of the hybrid SAGD process have not been investigated yet. The main objective of this paper is to visually investigate and to document the pore-scale events of the hybrid SAGD process using glass micromodel type of porous media. Different additives (n-pentane and n-hexane solvents) were added to steam prior to injecting into the model. Experiments were conducted in an inverted-bell vacuum chamber to reduce the excessive heat loss to surrounding. The results indicate that the gravity drainage process takes place through a thick layer of pores, in the direction perpendicular to the nominal oil-gaseous mixture interface, within the mobilized region. The interplay between gravity and capillarity forces results in the drainage of mobilized oil. The visualization results demonstrated coexistence of water-in-oil and solvent-in-water emulsification at the interface, due to the local condensation of both the steam and the vaporized solvent. The extent of emulsification depends directly to the temperature gradient between the gaseous mixture and the cold bitumen. Asphaltene precipitation was also observed when the condensed solvent reached to the bitumen interface. As the nature of the process tends towards being partially miscible, the extent of film-flow drainage type of mobilized oil was also significant. Other pore-scale phenomena such as localized entrapment of steam and vaporized solvent followed by condensation, steam and gaseous solvent condensation at the interface due to temperature gradient, capillary instabilities, and snap-off of liquid films were also illustrated using these pore-level visualization experiments. Keywords: gradient, drainage, gaseous phase, live oil, upstream oil & gas, bitumen, nominal sa-sagd interface, visualization experiment, asphaltene precipitation, pore Subjects: Improved and Enhanced Recovery, Steam-solvent combination methods Copyright 2010, Society of Petroleum Engineers You can access this article if you purchase or spend a download.
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| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
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| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
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| Intégrité de la recherche | 0,000 | 0,001 |
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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.
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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
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