Standalone Screen Design and Evaluation for Cased and Perforated Application in Unconsolidated Formations: The Role of Perforation Strategy and Sand Control Design on Well Productivity
Notice bibliographique
Résumé
Abstract Productivity of cased and perforated wellbores completed with standalone screen depends on the interactions of parameters such as perforation diameter, length, phasing and density, the gap between the casing and the standalone screen, and standalone screen aperture/pore size. Moreover, the permeability of the sand in the gap plays a major role in the overall productivity. This study aims at providing a numerical estimation of pressure drop for such completions. This study uses Computational Fluid Dynamics (CFD) in order to simulate the flow around a wellbore equipped with cased and perforated completion with standalone screen. Slotted liner was used as the standalone screen in this study. Details of such a complex completion were imported into the Finite Volume (FV) based numerical simulation via Computer-Aided Design (CAD). In addition to the geometrical design of the completion, different scenarios for the perforation stability, which affect the permeability of the perforation tunnel and result in potential fill-up of the annular gap between the slotted liner and perforations, were investigated. A large number of simulations (over 200 models) were completed to cover the different scenarios for perforation design and strategy along with different Open to Flow Area (OFA) values for the standalone slotted liner. Based on the results, completion efficiency is strongly changed by perforation and gap flow properties. The OFA for the standalone slotted liner completion has minor influence on the overall pressure drop if the gap between the casing and the standalone screen and the perforation is clean, unless the perforations are collapsed and the annular gap between the casing and slotted liner is filled up with sand. This is mainly because perforation parameters, such as penetration and diameter dominate the effect of all the other parameters, including slotted liner configuration. The results emphasize the effect of the completion geometry, perforation strategy, and opening size on the skin and productivity. Another main observation was the need to better understand the stability of the perforations and sanding potential from perforations, which dictate the permeability of the perforation and annular space. The results of this study highlight the comparative importance of different standalone screen designs and perforation parameters on well productivity. This study is the basis for optimizing the sand control and perforation strategy as an alternative to other completion types such as gravel packing in cased and perforated completions in vertical and slant wells.
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 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,001 | 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 ».