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US 8,282,365 B2Granted
Pump for pumping fluid in a wellbore using a fluid displacer means
AssigneeStar Oil Tools Inc.
InventorMarcel Obrejanu
Life of this patent
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Abstract
A pump is disclosed which has a housing with a upper end and a lower end. A conduit is defined through the housing between the upper and the lower ends. The pump includes an impeller within the housing, an inlet from the conduit to the impeller and an outlet from the impeller. Portions of the impeller may be distributed around the conduit. The pump may also include a motor coupled to the impeller. Portions of motor may also be distributed around the conduit. The outlet from the impeller may be independent of the conduit.
Claims10
A pump for pumping fluid, comprising:
- a pump housing having a first end and a second end;
- a fluid inlet opening in the first end and a fluid outlet opening in the second end;
- an unobstructed conduit extending through the pump housing from the fluid inlet opening to the fluid outlet opening;
- a first fluid displacer that is separate from the unobstructed conduit and positioned externally of the unobstructed conduit and having a plurality of portions which are arranged to act on fluid;
- an inlet channel for introducing fluid from the unobstructed conduit to the first fluid displacer to be pumped by the plurality of portions;
- and
- an outlet channel separate from the unobstructed conduit for carrying pumped fluid from the first fluid displacer to outside the pump without the fluid re-entering the unobstructed conduit;
- wherein the unobstructed conduit is in fluid communication with the fluid inlet opening and the fluid outlet opening;
- and
- wherein the unobstructed conduit extends past the first fluid displacer.
7 more elements
Dependencies are inferred from the claim text.