Notice bibliographique
Résumé
This article, written by Assistant Technology Editor Karen Bybee, contains highlights of paper SPE 88500, "Methane Pressure-Cycling Process With Horizontal Wells for Thin Heavy-Oil Reservoirs," by Mingzhe Dong, SPE, PTRC, and Sam Huang, SPE, and Keith Hutchence, SRC, prepared for the 2004 SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth, Australia, 18-20 October. The methane pressure-cycling (MPC) process is an enhanced-oil-recovery (EOR) method used in some heavy-oil reservoirs after termination of primary or waterflood production. The object of the process is restoration of the solution-gas-drive mechanism. This restoration is accomplished by reinjecting an amount of solution gas, mainly methane, and then repressuring the gas into solution by injecting water until the original reservoir pressure is reached. This recreates the primary-production conditions. This recovery technique targets the large portion of heavy oil in thin reservoirs. Introduction Heavy oil in reservoirs thicker than 10 m commonly is produced by use of thermal recovery methods. These methods generally are not suitable for thin reservoirs because of heat losses to the overburden, underburden, and bottomwater zones. Saskatchewan accounts for 62% of Canada’s total heavy-oil resource including 1.7×109 m3 of proven and 3.7×109 m3 of probable reserves. Of the province’s proven initial heavy oil in place, 97% is contained in reservoirs with pay zones less than 10 m thick and 55% is in reservoirs with pay zones less than 5 m thick. Primary and secondary methods recover only approximately 7% of the proven initial oil in place (IOIP). The incentive is strong for the development of EOR techniques that will maximize the recovery of these thin heavy-oil reservoirs. The MPC process is an EOR method intended for application after termination of primary or waterflood production in some thin reservoirs. The objective of the pressure-cycling process is restoration of the solution-gas-drive mechanism that provided primary production. Restoration is accomplished by reinjecting an amount of solution gas and then repressuring the gas back into solution by injecting water until original reservoir pressure is reached. This recreates the primary-production conditions. The process uses infill horizontal production wells located between the existing vertical wells that are used for methane and water injection to pressure up the depleted reservoir. This pressure cycling is repeated until additional economic recovery is no longer feasible. The Saskatchewan Research Council/Petroleum-Technology Research Center has been investigating the pressure-cycling process for the past few years. Experimental Pressure/Volume/Temperature (PVT) Studies. PVT studies were conducted for oil samples collected from four Saskatchewan heavy-oil reservoirs (Senlac, Golden Lake, Plover Lake, and Cactus Lake North) in contact with methane. The purpose of these studies was to investigate the PVT properties of heavy-oil/methane mixtures and to provide input data on the PVT behavior of live oils for numerical simulations. Heavy-Oil Coreflood Studies. The heavy-oil coreflood apparatus consists of a 30.5-cm triaxial-stress core holder, a Ruska dual-cylinder positive-displacement pump, an injection system, a production system, and support units. A backpressure regulator installed at the production end maintained the operating pressure. Oil production was determined on a mass basis.
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 machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| 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 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,002 | 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 source (Gemma direct ou Codex distillé), 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 ».