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US 8,985,975 B2Granted
Multistage pump suitable for use in wells
AssigneeBP Exploration Operating Company Limited
InventorMark Joseph Denny
Life of this patent
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Abstract
Multistage pump comprising a plurality of components which include a plurality of pre-assembled pump modules, having at least one twin screw pump module. The multistage pump further has an elongate sleeve for housing the components, and a securing device attachable or engagable with a portion of the elongate sleeve. The securing device is operable to fixedly retain the components within the sleeve. Each of the pre-assembled pump modules has at least one thrust bearing.
Claims13
A multistage pump comprising:
- a plurality of components comprising a plurality of pre-assembled pump modules including at least one twin screw pump module;
- wherein the multistage pump further comprises an elongate sleeve for housing the components and securing means attachable or engagable with a portion of the elongate sleeve, the securing means being operable to fixedly retain the components within the sleeve, and wherein each of the pre-assembled pump modules comprises at least one thrust bearing.
A method of assembling a multistage pump comprising:
- providing a plurality of components comprising a plurality of pre-assembled pump modules including at least one twin screw pump module, each of the pre-assembled pump modules comprising at least one thrust bearing;
- arranging the components into a stack such that the pump modules are located in series;
- inserting the stack within an outer housing or sleeve;
- and
- operating securing means to fixedly secure the stack within the outer housing or sleeve.
2 more elements
Dependencies are inferred from the claim text.