Downhole test signals for identification of operational drilling parameters
US-2016348493-A1 · Dec 1, 2016 · US
Electroformed stator tube for a progressing cavity apparatus
US9416780B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9416780-B2 |
| Application number | US-201314108673-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 17, 2013 |
| Priority date | Jan 24, 2007 |
| Publication date | Aug 16, 2016 |
| Grant date | Aug 16, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
What is claimed is: 1. 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. 2. The stator tube of claim 1 , wherein the electroformed metal deposit is comprised of nickel. 3. The stator tube of claim 1 , wherein the electroformed metal deposit is comprised of copper. 4. The stator tube of claim 1 , wherein the stator tube is configured to be mounted in a supporting stator housing. 5. The stator tube of claim 1 , wherein the contoured inner surface comprises a helical lobe surface. 6. 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. 7. The stator of claim 6 , wherein the electroformed metal deposit is comprised of nickel. 8. The stator of claim 6 , wherein the electroformed metal deposit comprised of copper. 9. The stator of claim 6 , wherein the contoured inner surface comprises a helical lobe surface. 10. The stator of claim 6 , wherein an annular space is defined between the stator tube and a supporting stator housing and wherein the annular space is substantially filled with a filler material. 11. The stator of claim 10 , wherein the filler material is comprised of an elastomeric material. 12. The stator of claim 10 , wherein the filler material is comprised of a cement material.
Assignees
Inventors
Classifications
Coating · CPC title
Tubes; Rings; Hollow bodies · CPC title
where one member is stationary while the other member rotates and orbits · CPC title
Screw or gear type, e.g., Moineau type · CPC title
Surface treatment · CPC title
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Frequently asked questions
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- What does patent US9416780B2 cover?
- 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.
- Who is the assignee on this patent?
- Halliburton Energy Services Inc
- What technology area does this patent fall under?
- Primary CPC classification F04C2/1075. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 16 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).