SUBMERSIBLE PUMP IMPELLER DESIGN FOR LIFTING GASEOUS FLUID

摘要

A gas-handling centrifugal pump has impellers for pumping gaseous materialscontaining up to 50 % by volume free gas. The impellers have split vanes withhigh exit angles up to about 90 degrees and preferably greater than 50degrees. The split vanes define flow passages that contain large diameterbalance holes that typically range between 45% to 100% of the width betweeneach split vane. The gas-handling centrifugal pump can be used as a chargepump for a centrifugal pump in a lower tandem configuration within a well.