GB1534445A - Sealing system for a rotary rock bit - Google Patents

Sealing system for a rotary rock bit

Info

Publication number
GB1534445A
GB1534445A GB7465/76A GB746576A GB1534445A GB 1534445 A GB1534445 A GB 1534445A GB 7465/76 A GB7465/76 A GB 7465/76A GB 746576 A GB746576 A GB 746576A GB 1534445 A GB1534445 A GB 1534445A
Authority
GB
United Kingdom
Prior art keywords
bearing
cutter
spindle
bearing system
feb
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.)
Expired
Application number
GB7465/76A
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.)
Dresser Industries Inc
Original Assignee
Dresser Industries 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 Dresser Industries Inc filed Critical Dresser Industries Inc
Publication of GB1534445A publication Critical patent/GB1534445A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • 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
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • 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
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2352/00—Apparatus for drilling

Abstract

1534445 Boring earth DRESSER INDUSTRIES INC 25 Feb 1976 [27 Feb 1975] 07465/76 Heading E1F In a roller-cutter drill bit 10, each cutter 14 is mounted on a spindle 13 by a bearing system including roller bearings 16 running in a raceway groove in the cutter 14, a seal 20 being provided between the cutter 14 and spindle 13. As described the bearing system includes roller bearing 16, ball bearing 17, friction bearing 18 and thrust button 19. In a first embodiment, as shown, the flushing fluid is air which is circulated through passages 27, 22, 26 to cool the spindle 13 and bearing system, the air being prevented from entering the bearing system by seal 24. In a second embodiment (not shown) which uses liquid as the flushing fluid, the bearing is supplied with lubricant from a reservoir whose pressure is equalised with the hydrostatic pressure in the borehole by means of a flexible diaphragm.
GB7465/76A 1975-02-27 1976-02-25 Sealing system for a rotary rock bit Expired GB1534445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55376275A 1975-02-27 1975-02-27

Publications (1)

Publication Number Publication Date
GB1534445A true GB1534445A (en) 1978-12-06

Family

ID=24210651

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7465/76A Expired GB1534445A (en) 1975-02-27 1976-02-25 Sealing system for a rotary rock bit

Country Status (8)

Country Link
BR (1) BR7601243A (en)
CA (1) CA1048489A (en)
DE (1) DE2608205A1 (en)
FR (1) FR2302408A1 (en)
GB (1) GB1534445A (en)
IT (1) IT1053907B (en)
PL (1) PL100432B1 (en)
SE (1) SE415380B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365038A (en) * 2000-07-27 2002-02-13 Walker & Co James Ltd Pressure relief seal for a drill bit

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4386663A (en) * 1981-02-25 1983-06-07 Hughes Tool Company Cooled journal bearing
US5016719A (en) * 1990-01-24 1991-05-21 Western Rock Bit Company Limited Rotary cone type rock bits

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2075997A (en) * 1935-06-25 1937-04-06 Chicago Pneumatic Tool Co Roller cutter, spindle and bearing assembly for earth boring drills
US3102601A (en) * 1959-04-13 1963-09-03 Phillips Petroleum Co Drill bit
FR1260080A (en) * 1960-03-22 1961-05-05 Materiel De Forage Soc De Fab Sealed roller drill bit
US3844363A (en) * 1973-06-11 1974-10-29 E Williams Drill tool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2365038A (en) * 2000-07-27 2002-02-13 Walker & Co James Ltd Pressure relief seal for a drill bit
GB2365038B (en) * 2000-07-27 2004-06-02 Walker & Co James Ltd Sealing structure for a rock drill bit

Also Published As

Publication number Publication date
FR2302408A1 (en) 1976-09-24
DE2608205A1 (en) 1976-09-09
BR7601243A (en) 1976-09-14
PL100432B1 (en) 1978-10-31
CA1048489A (en) 1979-02-13
SE7600320L (en) 1976-08-30
IT1053907B (en) 1981-10-10
FR2302408B1 (en) 1982-11-05
SE415380B (en) 1980-09-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee