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US 9,416,780 B2Granted
Electroformed stator tube for a progressing cavity apparatus
AssigneeHalliburton Energy Services, Inc.
InventorDavid Joe Steele
Life of this patent
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Abstract
A method for use in producing a stator for a progressing cavity apparatus which includes the use of electroforming to produce the stator tube. A stator tube for a progressing cavity apparatus which is produced using electroforming and a stator for a progressing cavity apparatus which includes a stator tube produced using electroforming.
Claims12
A stator tube for a progressing cavity apparatus, the stator tube comprising:
- a single integral metallic tube comprising a cylindrical outer surface and a contoured inner surface;
- and
- a substantially constant thickness elastomeric lining formed on and matching the shape of the contoured inner surface of the single integral metallic tube,
- wherein the single integral metallic tube comprises an electroformed metal deposit and the shape of the contoured inner surface of the single integral tube varies at least one of axially and circumferentially.
1 more element
A stator for a progressing cavity apparatus, the stator comprising:
- a housing;
- and
- a stator tube mounted in the housing, the stator tube comprising:
- a single integral metallic tube comprising a cylindrical outer surface and a contoured inner surface;
- and
- a substantially constant thickness elastomeric lining formed on and matching the shape of the contoured inner surface of the single integral metallic tube,
- wherein the single integral metallic tube comprises an electroformed metal deposit and the shape of the contoured inner surface of the single integral metallic tube varies at least one of axially and circumferentially.
4 more elements
Dependencies are inferred from the claim text.