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Vol. 58 No. 5
May 2006
Artificial Lift
Development Status of a Metal Progressing Cavity Pump for Heavy-Oil and Hot-Production Wells
Progressing cavity pumps (PCPs) often are used for cold heavy-oil production because of their adaptability to viscous and abrasive fluids. However, for thermal recovery, a standard PCP is not adaptable because the elastomer of the stator, the heart of the pump, cannot withstand fluid temperatures higher than 160°C. An all-metal pump, avoiding the elastomer weakness, has been developed. Validation tests began in early 2005 using extraheavy crude with temperatures up to 200°C, pressure up to 75 bar, and flow rates up to 260 m3/d at 350 rpm. The flow-rate range will be as high as 1000 m3/d.
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