Mature Oil Field Potential Study in Southern East Asian Countries
Notice bibliographique
Résumé
Abstract With the difficulty to discover large new oil fields in Southern East Asia, it is very challenge for this area to maintain its oil production. Thus to increase the final recovery and increase oil production from mature oil fields gets more and more concern from government and oil companies operating in this region. These fields are classified as depleted solutions gas drive, weak natural water drive with partial water injection and strong natural water drive with no water injection. General characteristics of regional large mature field are analyzed on the basis of typical field data from Southern East Asian countries. Good reservoir property, low in situ viscosity, long production history makes these field often with high primary recovery as high as 40-60%. However, data shows that reserve potential does exist in the secondary reservoirs, in unrecognized oil interbedded zones and in untapped oil area by existing wells. Even for very homogenous reservoirs with perforation covering all oil-bearing intervals, oil has always mainly being produced from the good part of reservoirs. Recalculation of original oil in place and construction of fine reservoir model is critical to these fields for identification of infill well locations and reperforation strategies. Water injection potential for depleted fields are studied and the major challenge is that the depleted reservoir pressure and the existence of the secondary gas cap could make the oil gain from water injections arrives only after several years of injection process. Whole field scale water injection in mature oil fields is always risky and should be only performed by satisfactory simulation and pilot results. Polymer flooding to increase the final recovery is also discussed and its potential mainly fits for the mature fields with weak natural water drive in shallow burial depth. Big potential could be tapped in mature fields for recovering more reserves while high reservoir temperature, depleted reservoir pressure, and significant investment in facilities presents challenge for EOR solutions in this area. Work over and well stimulation potential are also discussed with strong recommendation to cut corresponding investment and relevant operation cost in order to make these measures are economic for mature fields.
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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 ».