NO941375L - Drill bit - Google Patents

Drill bit

Info

Publication number
NO941375L
NO941375L NO941375A NO941375A NO941375L NO 941375 L NO941375 L NO 941375L NO 941375 A NO941375 A NO 941375A NO 941375 A NO941375 A NO 941375A NO 941375 L NO941375 L NO 941375L
Authority
NO
Norway
Prior art keywords
bearing shaft
drill bit
cutter
seal
main body
Prior art date
Application number
NO941375A
Other languages
Norwegian (no)
Other versions
NO941375D0 (en
Inventor
Danny E Scott
Original Assignee
Baker Hughes Inc
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 Baker Hughes Inc filed Critical Baker Hughes Inc
Publication of NO941375D0 publication Critical patent/NO941375D0/en
Publication of NO941375L publication Critical patent/NO941375L/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/08—Roller bits
    • E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
    • E21B10/25—Roller bits characterised by bearing, lubrication or sealing details characterised by sealing details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
    • F16J15/3436—Pressing means
    • F16J15/344—Pressing means the pressing force being applied by means of an elastic ring supporting the slip-ring

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

Borkrone (11) omfatter en hoveddel (13), minst en ut- kraget lageraksel (31) innbefattende en basis (43) og en sylindrisk glidelager-flate (37) som strekker seg innad og nedad fra hoveddelen, og minst en kutter som er montert for rotasjon på lagerakselens (31) sylindriske glidelagerflate (37). En tetningsenhet (42) er anordnet mellom den sylindris- ke glidelager-flate (37) og kutteren (33) nær den utkragete lageraksels (31) basis (43) . Tetningsenheten (42) omfatter minst en stiv tethingsring (60) med en tetnings-endeflate (56) i anlegg mot en andre tetnings-endeflate (58). Minst en av tetnings-endeflåtene (56, 58) er i det minste delvis utformet av et ekstra hardt, abrasjonsfast materiale med en slitefast- het som er større enn, og en glidefriksjons-koeffisient som er mindre enn, den til det stive tetningsring-materiale.Drill bit (11) comprises a main body (13), at least one projected bearing shaft (31) including a base (43) and a cylindrical sliding bearing surface (37) extending inward and downward from the main body, and at least one cutter which is mounted for rotation on the cylindrical plain bearing surface (37) of the bearing shaft (31). A sealing unit (42) is provided between the cylindrical sliding bearing surface (37) and the cutter (33) near the base (43) of the projected bearing shaft (31). The seal assembly (42) comprises at least one rigid seal ring (60) with a seal end surface (56) abutting against a second seal end surface (58). At least one of the sealing end barrels (56, 58) is at least partially formed of an extra hard abrasion resistant material with a wear resistance greater than, and a slip friction coefficient less than, that of the rigid seal ring. material.

NO941375A 1993-04-16 1994-04-15 Drill bit NO941375L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4886393A 1993-04-16 1993-04-16

Publications (2)

Publication Number Publication Date
NO941375D0 NO941375D0 (en) 1994-04-15
NO941375L true NO941375L (en) 1994-10-17

Family

ID=21956860

Family Applications (1)

Application Number Title Priority Date Filing Date
NO941375A NO941375L (en) 1993-04-16 1994-04-15 Drill bit

Country Status (3)

Country Link
GB (1) GB2278865B (en)
IT (1) IT1274260B (en)
NO (1) NO941375L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5472058A (en) * 1994-04-20 1995-12-05 Smith International, Inc. Rock bit with mechanical seal
GB9411228D0 (en) * 1994-06-04 1994-07-27 Camco Drilling Group Ltd A modulated bias unit for rotary drilling
US5791421A (en) * 1996-08-06 1998-08-11 Baker Hughes Incorporated Optimal material pair for metal face seal in earth-boring bits
US6684966B2 (en) 2001-10-18 2004-02-03 Baker Hughes Incorporated PCD face seal for earth-boring bit
US7234541B2 (en) 2002-08-19 2007-06-26 Baker Hughes Incorporated DLC coating for earth-boring bit seal ring
WO2008131095A2 (en) * 2007-04-17 2008-10-30 Baker Hughes Incorporated Elastomer material for high temperature roller cone bits
CN101806195A (en) 2010-03-09 2010-08-18 江汉石油钻头股份有限公司 Tricone bit used for high-rotating speed well drilling
DE202018100532U1 (en) * 2018-01-31 2018-03-09 Schöning Gmbh Device for offshore work with a geared motor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0335497B1 (en) * 1988-03-31 1993-04-14 Smith International, Inc. Metal-to-metal face seal for rock bits

Also Published As

Publication number Publication date
GB2278865A (en) 1994-12-14
ITTO940301A0 (en) 1994-04-15
ITTO940301A1 (en) 1995-10-15
GB2278865B (en) 1996-06-26
GB9407359D0 (en) 1994-06-08
IT1274260B (en) 1997-07-17
NO941375D0 (en) 1994-04-15

Similar Documents

Publication Publication Date Title
SE9703653L (en) Seal for drill bit and drill bit provided with such seal
US6142249A (en) Earth-boring bit with improved bearing seal
US4747604A (en) Rotary shaft seal for drill bit cutters
US3765495A (en) Drill bit seals
NZ306581A (en) Drill string fitting
US4629338A (en) Seal and bearing apparatus for bits
US4466621A (en) Rotary drill bit multiple seal assembly
NO941375L (en) Drill bit
CA2025853A1 (en) Double seal with lubricant gap between seals for sealed rotary drill bits
NO20051297L (en) Casing protection device
SE0302925D0 (en) Drill bit with nested bearing with double-sealed design
CA2254044A1 (en) Sealed bearing drill bit with dual-seal configuration and fluid cleaning capability
SE8107488L (en) Rock drill bit
CY1110865T1 (en) CYLINDER CYLINDER LOCK COMBINATION COMBINATION
EP1013876A3 (en) Face seal for rock bits
AU758373B2 (en) Drilling head with cone rock bit
EP0996836A4 (en) Cassette seal with radial and axial lip
EP0757154A3 (en) Earth boring bit with improved bearing seal
EP0049246A1 (en) Rotary drill bit.
AU3997295A (en) Thread coupling for drill string elements for percussive drilling
SE9603663L (en) Rock drill bit and part thereof
TW358777B (en) Rolling bearing with sealing joint with integrated coder and wheel hub incorporating such a bearing
SG44482A1 (en) Improved seal
DE59812616D1 (en) Drilling device with double impact system
ES2154090A1 (en) Driveshaft with intermediate bearing