Stage pump having composite components
AssigneeSchlumberger Technology Corporation
InventorsArthur I. Watson, Dwight C. Chilcoat
Life of this patent
Estimating the term…
Abstract
A system and method is provided for pumping fluid. A pump incorporates composite components that provide a high degree of formability while maintaining wear resistance for use in potentially abrasive environments. The composite components may comprise one or more impellers and/or one or more diffusers.
Claims38
A pumping system, comprising:
- a submersible, centrifugal pump having an outer housing, a shaft, a plurality of diffusers mounted within the outer housing and a plurality of impellers mounted about the shaft, each impeller having a short hub formed of a moldable plastic and a sleeve axially adjacent the short hub, wherein the sleeve is positioned about the shaft for rotation within a next adjacent diffuser, the sleeve being formed of a non-plastic material able to better withstand abrasive wear relative to the moldable plastic.
An electric submersible pumping system, comprising:
- a submersible motor;
- a motor protector;
- and
- a submersible pump with a plurality of stages, each stage having an impeller with a plurality of vanes, and a sleeve that rotates with the plurality of vanes, the plurality of vanes being formed of a moldable plastic and the sleeve being formed of a material having greater wear resistance than the moldable plastic.
A pumping system, comprising:
- a submersible, centrifugal pump having an outer housing, a shaft, a plurality of diffusers mounted within the outer housing and a plurality of impellers mounted about the shaft, each diffuser being formed of a moldable material and a reinforcement member molded into the moldable material, the reinforcement member being disposed generally circumferentially along a radially outlying region of the diffuser.
A method of creating an impeller for a centrifugal, submersible pump having a plurality of stages through which a liquid is pumped, comprising:
- forming a short hub and a plurality of attached impeller vanes from a moldable material;
- and
- positioning a wear resistant sleeve axially adjacent the short hub to create a longer hub, the wear resistant sleeve being formed of a material having greater wear resistance than the moldable material, the wear resistant sleeve extending into an area more susceptible to wear.
A method of creating a centrifugal, submersible pump having a plurality of stages through which a liquid is pumped, comprising:
- forming a composite diffuser with a stiffening member integrally molded into a moldable plastic material such that the stiffening member is at least partially disposed at a radially outlying region of the composite diffuser.
A device for use in a centrifugal pump, comprising:
- a composite diffuser formed of a moldable material and a reinforcement member integrally molded into the moldable material at a radially outlying region of the composite diffuser.
A device for use in a centrifugal pump, comprising:
- an impeller having a plurality of vanes extending radially from a central section and a sleeve extending axially from the central section to provide a wear surface, the plurality of vanes being formed from a moldable material and the sleeve being formed from a material comprising nickel-resist to provide greater wear resistance than the moldable material.
Dependencies are inferred from the claim text.