Design and performance analysis of a slotted blade impeller for electrical submersible pumps
To resolve gas locking and head deterioration in traditional centrifugal submersible pumps handling fluids with Gas Volume Fraction (GVF) >10 %, this study designs a novel slotted blade impeller using orthogonal experiments (four factors/four levels) and Computational Fluid Dynamics technology. K...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025020432 |
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| Summary: | To resolve gas locking and head deterioration in traditional centrifugal submersible pumps handling fluids with Gas Volume Fraction (GVF) >10 %, this study designs a novel slotted blade impeller using orthogonal experiments (four factors/four levels) and Computational Fluid Dynamics technology. Key parameters—slot position (R), width (b), deflection angle (β), and depth (h)—were optimized, revealing β = 60° as the dominant factor (priority: β > b > R > h). The optimal single-slot configuration (R = 29 mm, b = 2 mm, β = 60°, h = 0.75) achieved 2.575 m head and 23.398 % efficiency at GVF=30 %, while reducing high-GVF zones (GVF>80 %) to 3.757 % flow volume. A breakthrough double-slot design (Slot 1: R = 29 mm, b = 2 mm; Slot 2: R = 24 mm, b = 1 mm) further enhanced performance to 2.644 m head, 23.838 % efficiency, and 1.067 % gas volume, by fragmenting gas accumulation and enabling dispersed bubble flow via stepwise pressurization. This slotted impeller eliminates gas locking at Gas Volume Fractions (GVFs) >10 %, providing a field-deployable solution for stable high-GVF oil well production without external separators. |
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| ISSN: | 2590-1230 |