Progressing cavity pump and methods of operation
AssigneeActivate Artificial Lift Inc.
InventorStephen BARBOUR
Life of this patent
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Abstract
A progressing cavity pump has: a stator; a rotor; the rotor having a first axial operating position within the stator in which a first axial part of the rotor aligns with a first axial part of the stator to form an active pump section adapted to generate a pumping force on rotation of the rotor in the stator; the rotor having a second axial operating position within the stator in which the first axial part of the rotor aligns with a second axial part of the stator to form an active pump section adapted to generate a pumping force on rotation of the rotor in the stator. A related method is disclosed.
Claims23
A method for operating a progressing cavity pump in a borehole, the progressing cavity pump having a rotor within a stator, the method comprising:
- axially translating the rotor, relative to the stator, from a first operating position within the stator to a second operating position within the stator;
- in which, when the rotor is in the first operating position a first axial part of the rotor aligns with a first axial part of the stator to form an active pump section adapted to generate a pumping force on rotation of the rotor in the stator;
- and
- and in which, when the rotor is in the second operating position the first axial part of the rotor aligns with a second axial part of the stator to form an active pump section adapted to generate a pumping force on rotation of the rotor in the stator.
A progressing cavity pump comprising:
- a stator;
- a rotor;
- the rotor having a first axial operating position within the stator in which a first axial part of the rotor aligns with a first axial part of the stator to form an active pump section adapted to generate a pumping force on rotation of the rotor in the stator;
- the rotor having a second axial operating position within the stator in which the first axial part of the rotor aligns with a second axial part of the stator to form an active pump section adapted to generate a pumping force on rotation of the rotor in the stator.
Dependencies are inferred from the claim text.