Progressing Cavity Pump Sizing: Black Magic or Science?
Notice bibliographique
Résumé
Abstract Progressing cavity (PC) pumps deployed as an artificial lift method have seen their range of use expand from their heavy oil origins in Canada to a wide variety of different applications around the world. This expansion has been enabled by the development of new products to meet the different volume, lift and downhole fluid environment requirements. However the effect of the fluid environment on the PC pumps‘ stator elastomeric lining dimensions and properties and, in turn their impact on pump performance and life, introduces a critical application design consideration. This consideration is commonly referred to in the industry as pump sizing and encompasses the process of adjusting rotor dimensions to compensate for the impact of the downhole environment on the stator. Pump sizing started as a trial and error approach based on pump functional testing. As the fluid environments began to have an increased impact on the stator elastomer, pump sizing came to be recognized as being important to ensuring pump success. Methods for measuring rotors and stators were improved and calculation and sizing methodologies developed. Pump test bench equipment and processes became more sophisticated and their accuracy and reliability improved. Methods for laboratory testing elastomer samples in well fluids were developed to quantify dimensional and mechanical property changes. The second edition of the ISO 15136-1 International Standard for PC Pump Systems for Artificial Lift¹ provides guidelines for component measurement, pump testing and elastomer compatibility testing but does not address the use of this information for pump sizing. Consequently pump sizing is currently done differently across the industry with limited information being provided to end users. This often results in confusion and poor implementation and can detrimentally affect PC pump performance and runtimes. In extreme cases it has led to the characterization of PC pumps as being unsuitable for a particular application when the problem was primarily with the pump sizing. This paper provides an overview of the historical and current state of the different processes associated with PC pump sizing and shows how the newer processes can be applied in a systematic scientific manner to support the successful application of PC Pumps.
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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 ».