| 摘要 |
A pumping system for injecting buoyant spheres into an oil or gas well having a feeder containing a plurality of buoyant spheres; and a sphere pump in proximity to the feeder, having first and second rotatable wheels, wherein the first wheel has a plurality of notches and the second wheel has a corresponding plurality of notches, such that during rotation of the wheels the first and second wheel notches temporarily combine to form a plurality of pockets, wherein each pocket receives then ejects one of the plurality of buoyant spheres from the feeder during rotation of the first and second wheels.
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