Progressing cavity stator with gas breakout port
AssigneeCameron International Corporation
InventorsDerek L. Twidale, Brennon Cote
Life of this patent
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Abstract
Progressing cavity devices and systems are provided. In one embodiment, a stator of a progressing cavity device includes metal plates with apertures that are rotationally offset to form a winding rotor conduit for receiving a rotor of the progressing cavity device. A layer of elastomer can be provided on edges of the apertures of the metal plates in the winding rotor conduit, and the stator can also include a gas breakout port through the metal plates to enable gas between the metal plates to escape the stator. Additional systems, devices, and methods are also disclosed.
Claims19
A system comprising:
- a stator of a progressing cavity device, the stator including:
- a plurality of metal plates with apertures that are rotationally offset to form a winding rotor conduit for receiving a rotor of the progressing cavity device;
- a layer of elastomer provided on edges of the apertures of the metal plates in the winding rotor conduit;
- and
- a gas breakout port through at least some of the metal plates and isolated from the winding rotor conduit by the layer of elastomer, wherein the gas breakout port enables gas between the metal plates to exit the stator.
A system comprising:
- a series of plates assembled to form a stator of a progressing cavity device, the stator including first and second conduits through the series of plates, the first conduit having a coating that inhibits fluid flow from inside the first conduit to the second conduit through interstices between the plates, wherein the second conduit is in fluid communication with the interstices and the stator includes a third conduit extending laterally from the second conduit to an exterior of the stator so as to allow gas in the coating to escape from the stator via the second conduit and the third conduit.
A method comprising:
- providing plates each having a central aperture;
- forming a stator core of a progressing cavity device using the plates, wherein forming the stator core includes providing a rotor conduit formed by the central apertures of the plates and providing a gas breakout conduit spaced apart from the rotor conduit to facilitate escape of gas between the plates to outside the stator core during operation of the progressing cavity device;
- installing the stator core in a housing;
- and
- boring a hole through the housing to the gas breakout conduit.
Dependencies are inferred from the claim text.