NO331192B1 - Pressurized rotary sleeve - Google Patents

Pressurized rotary sleeve

Info

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
Application number
NO20093108A
Other languages
Norwegian (no)
Other versions
NO20093108A1 (en
Inventor
Karluf Hagen
Original Assignee
Innovar Engineering As
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innovar Engineering As filed Critical Innovar Engineering As
Priority to NO20093108A priority Critical patent/NO331192B1/en
Publication of NO20093108A1 publication Critical patent/NO20093108A1/en
Publication of NO331192B1 publication Critical patent/NO331192B1/en

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.

NO20093108A 2009-10-07 2009-10-07 Pressurized rotary sleeve NO331192B1 (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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