NO331192B1 - Pressurized rotary sleeve - Google Patents
Pressurized rotary sleeveInfo
- Publication number
- NO331192B1 NO331192B1 NO20093108A NO20093108A NO331192B1 NO 331192 B1 NO331192 B1 NO 331192B1 NO 20093108 A NO20093108 A NO 20093108A NO 20093108 A NO20093108 A NO 20093108A NO 331192 B1 NO331192 B1 NO 331192B1
- Authority
- NO
- Norway
- Prior art keywords
- rotary sleeve
- bearing
- drill string
- pressurized
- packing elements
- Prior art date
Links
Abstract
Rotasjonsmuffe for bruk sammen med, og sammenskrudd til en borestreng med den hensikt å fungere som et rullelager mellom borestrengen og innsiden av et foringsrør. Rotasjonsmuffen er i følge oppfinnelsen konstruert slik at lagerhuset kan trykksettes og forbli trykksatt under boreoperasjonen uavhengig av trykk i det omkringliggende miljøet, dette for å sikre et rent smørefett for rullelageret. Overtrykket i lagerhuset forhindrer at brønnvæske trenger inn i dette. Rotasjonsmuffen vil ifølge oppfinnelsen ha et overskuddslager av smørefett som tilføres automatisk ved begynnende slitasje på pakningselementene. Status på pakningselementene kan ifølge oppfinnelsen observeres visuelt uten demontering etter bruk.Rotary sleeve for use with, and screwed into, a drill string for the purpose of acting as a roller bearing between the drill string and the inside of a casing. According to the invention, the rotary sleeve is designed so that the bearing housing can be pressurized and remain pressurized during the drilling operation regardless of pressure in the surrounding environment, to ensure a clean grease for the roller bearing. The overpressure in the bearing housing prevents well fluid from entering it. In accordance with the invention, the rotary sleeve has an excess bearing of grease which is supplied automatically upon initial wear on the packing elements. According to the invention, the status of the packing elements can be observed visually without disassembly after use.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20093108A NO331192B1 (en) | 2009-10-07 | 2009-10-07 | Pressurized rotary sleeve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20093108A NO331192B1 (en) | 2009-10-07 | 2009-10-07 | Pressurized rotary sleeve |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20093108A1 NO20093108A1 (en) | 2011-04-08 |
NO331192B1 true NO331192B1 (en) | 2011-10-31 |
Family
ID=44106343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20093108A NO331192B1 (en) | 2009-10-07 | 2009-10-07 | Pressurized rotary sleeve |
Country Status (1)
Country | Link |
---|---|
NO (1) | NO331192B1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996034173A1 (en) * | 1995-04-27 | 1996-10-31 | Austoil Technology Limited | Drill string fitting |
US6651744B1 (en) * | 1997-11-21 | 2003-11-25 | Superior Services, Llc | Bi-directional thruster pig apparatus and method of utilizing same |
EP1475172A1 (en) * | 2003-03-13 | 2004-11-10 | Powers Fasteners Europe BV | Drilling devices and methods for producing undercut holes |
-
2009
- 2009-10-07 NO NO20093108A patent/NO331192B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996034173A1 (en) * | 1995-04-27 | 1996-10-31 | Austoil Technology Limited | Drill string fitting |
US6651744B1 (en) * | 1997-11-21 | 2003-11-25 | Superior Services, Llc | Bi-directional thruster pig apparatus and method of utilizing same |
EP1475172A1 (en) * | 2003-03-13 | 2004-11-10 | Powers Fasteners Europe BV | Drilling devices and methods for producing undercut holes |
Also Published As
Publication number | Publication date |
---|---|
NO20093108A1 (en) | 2011-04-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CHAD | Change of the owner's name or address (par. 44 patent law, par. patentforskriften) |
Owner name: INNOVAR SOLUTIONS AS, NO |
|
MM1K | Lapsed by not paying the annual fees |