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CA2240023A1 - Protected lubricant reservoir for sealed bearing earth boring drill bit - Google Patents

Protected lubricant reservoir for sealed bearing earth boring drill bit

Info

Publication number
CA2240023A1
CA2240023A1 CA 2240023 CA2240023A CA2240023A1 CA 2240023 A1 CA2240023 A1 CA 2240023A1 CA 2240023 CA2240023 CA 2240023 CA 2240023 A CA2240023 A CA 2240023A CA 2240023 A1 CA2240023 A1 CA 2240023A1
Authority
CA
Canada
Prior art keywords
reservoir
lubricant reservoir
drill bit
sealed bearing
earth boring
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA 2240023
Other languages
French (fr)
Other versions
CA2240023C (en
Inventor
Robert H. Slaughter, Jr.
Peter T. Cariveau
Kirk A. Norris
Roger Didericksen
William M. Conn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Smith International Inc
Original Assignee
Smith International 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 Smith International Inc filed Critical Smith International Inc
Priority to CA002567415A priority Critical patent/CA2567415C/en
Priority to CA002567355A priority patent/CA2567355A1/en
Publication of CA2240023A1 publication Critical patent/CA2240023A1/en
Application granted granted Critical
Publication of CA2240023C publication Critical patent/CA2240023C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • E21B10/24—Roller bits characterised by bearing, lubrication or sealing details characterised by lubricating details
    • 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
    • E21B10/003—Drill bits with cutting edges facing in opposite axial directions
    • 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
    • E21B10/18—Roller bits characterised by conduits or nozzles for drilling fluids

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

A rotary cone rock bit, comprises a bit body including a plurality of legs extending therefrom, each of the legs having an outer surface that includes a leading surface and a trailing surface, a roller cone rotatably supported on each of the legs, a bearing system between each cone and the leg on which it is supported, and a lubricant reservoir in fluid communication with the bearing system. The reservoir can be provided with a wear resistant plug, if desired. In the present bit, the reservoir has at least one opening positioned in either the leg's leading surface, trailing surface, center surface, shoulder surface or some combination of these. Alternatively, the reservoir can be formed inside the bit body, preferably by means of a canister, which can be provided with venting means as desired.
CA 2240023 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit Expired - Lifetime CA2240023C (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002567415A CA2567415C (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit
CA002567355A CA2567355A1 (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US5137397P 1997-07-01 1997-07-01
US60/051,373 1997-07-01
US92586997A 1997-09-09 1997-09-09
US08/925,869 1997-09-09

Related Child Applications (2)

Application Number Title Priority Date Filing Date
CA002567355A Division CA2567355A1 (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit
CA002567415A Division CA2567415C (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Publications (2)

Publication Number Publication Date
CA2240023A1 true CA2240023A1 (en) 1999-01-01
CA2240023C CA2240023C (en) 2007-02-13

Family

ID=26729352

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2240023 Expired - Lifetime CA2240023C (en) 1997-07-01 1998-06-08 Protected lubricant reservoir for sealed bearing earth boring drill bit

Country Status (4)

Country Link
AU (1) AU731531B2 (en)
CA (1) CA2240023C (en)
GB (1) GB2326894A (en)
SE (5) SE9802318L (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2355747B (en) * 1999-11-01 2001-12-12 Baker Hughes Inc Journal bearing for earth-boring bit
RU2231613C2 (en) * 2002-07-01 2004-06-27 Открытое акционерное общество "Волгабурмаш" Boring chisel for well boring with blow-down of pit-face with air
US7749947B2 (en) 2006-05-01 2010-07-06 Smith International, Inc. High performance rock bit grease
US7677338B2 (en) 2007-03-14 2010-03-16 Overstreet James L System, method, and apparatus for passive and active updrill features on roller cone drill bits
US8047309B2 (en) 2007-03-14 2011-11-01 Baker Hughes Incorporated Passive and active up-drill features on fixed cutter earth-boring tools and related systems and methods
RU2486329C2 (en) * 2011-05-18 2013-06-27 Открытое акционерное общество "Волгабурмаш" (ОАО "Волгабурмаш") Drill bit with blowing face by air and sealing of rolling cutter bearings

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917028A (en) * 1975-01-13 1975-11-04 Smith International Lubrication reservoir assembly
GB1524914A (en) * 1976-06-14 1978-09-13 Smith International Rotary rock drill bits
US4375242A (en) * 1980-08-11 1983-03-01 Hughes Tool Company Sealed and lubricated rock bit with air protected seal ring
US4793719A (en) * 1987-11-18 1988-12-27 Smith International, Inc. Precision roller bearing rock bits

Also Published As

Publication number Publication date
SE9802318D0 (en) 1998-06-29
AU7396198A (en) 1999-01-14
GB2326894A (en) 1999-01-06
SE0000839D0 (en) 2000-03-14
SE519685C2 (en) 2003-04-01
CA2240023C (en) 2007-02-13
SE9802318L (en) 1999-01-02
SE519576C2 (en) 2003-03-18
SE0000840D0 (en) 2000-03-14
SE0000841L (en) 2000-03-14
SE519577C2 (en) 2003-03-18
SE0000842L (en) 2000-03-14
SE518362C2 (en) 2002-10-01
SE0000840L (en) 2000-03-14
AU731531B2 (en) 2001-03-29
SE0000841D0 (en) 2000-03-14
SE0000839L (en) 2000-03-14
SE0000842D0 (en) 2000-03-14
GB9813000D0 (en) 1998-08-12

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20180608