| 摘要 |
A device and method of tailoring a pump lift capacity of a pump for an electrical submersible pumping unit (ESP). The pump unit of the ESP has a plurality of stages, each made up of an impeller and a diffuser. The ESP has a pump lift capacity, which is ideally matched with well capacity. The well capacity is, therefore, the target lift capacity. To facilitate matching of pump lift capacity and well capacity, one or more stages of the pump unit may be replaced with a spacer assembly to reduce pump lift capacity by a desired amount. The spacer assembly may include a shaft bearing support made up of an outer ring and an inner ring, wherein the outer and inner ring are connected by webs, which allow oil to flow through the support. The spacer assembly may be axially located on the pump shaft via compression tubes. |
