IT966440B - Punta per perforazioni in roccia e sistema di livellamento delle pressioni per la stessa - Google Patents

Punta per perforazioni in roccia e sistema di livellamento delle pressioni per la stessa

Info

Publication number
IT966440B
IT966440B IT53511/72A IT5351172A IT966440B IT 966440 B IT966440 B IT 966440B IT 53511/72 A IT53511/72 A IT 53511/72A IT 5351172 A IT5351172 A IT 5351172A IT 966440 B IT966440 B IT 966440B
Authority
IT
Italy
Prior art keywords
rock
drilling
bit
same
leveling system
Prior art date
Application number
IT53511/72A
Other languages
English (en)
Original Assignee
Dresser Ind
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 Ind filed Critical Dresser Ind
Application granted granted Critical
Publication of IT966440B publication Critical patent/IT966440B/it

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

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)
IT53511/72A 1971-11-24 1972-10-20 Punta per perforazioni in roccia e sistema di livellamento delle pressioni per la stessa IT966440B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20173371A 1971-11-24 1971-11-24

Publications (1)

Publication Number Publication Date
IT966440B true IT966440B (it) 1974-02-11

Family

ID=22747052

Family Applications (1)

Application Number Title Priority Date Filing Date
IT53511/72A IT966440B (it) 1971-11-24 1972-10-20 Punta per perforazioni in roccia e sistema di livellamento delle pressioni per la stessa

Country Status (6)

Country Link
US (1) US3721306A (it)
AR (1) AR201187A1 (it)
CA (1) CA967552A (it)
DE (1) DE2258367A1 (it)
GB (1) GB1397970A (it)
IT (1) IT966440B (it)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3847234A (en) * 1972-06-01 1974-11-12 Reed Tool Co Pressure relief device for drill bit lubrication system
US4019785A (en) * 1975-05-30 1977-04-26 Hughes Tool Company Drill bit utilizing lubricant thermal expansion and relief valve for pressure control
US4014595A (en) * 1975-05-30 1977-03-29 Hughes Tool Company Drill bit with seal ring compensator
US4055225A (en) * 1976-05-17 1977-10-25 Hughes Tool Company Lubricant pressure compensator for an earth boring drill bit
US4388984A (en) * 1981-02-09 1983-06-21 Smith International, Inc. Two-stage pressure relief valve
US4335791A (en) * 1981-04-06 1982-06-22 Evans Robert F Pressure compensator and lubricating reservoir with improved response to substantial pressure changes and adverse environment
US4552228A (en) * 1984-02-21 1985-11-12 Varel Mfg. Co. Low pressure differential compensator
US4577705A (en) * 1984-04-23 1986-03-25 Smith International, Inc. Bellows lubricant pressurizer for sealed bearing rock bits
US4730681A (en) * 1986-08-29 1988-03-15 Rock Bit Industries U.S.A., Inc. Rock bit cone lock and method
US4942930A (en) * 1989-02-28 1990-07-24 Cummins Engine Company, Inc. Lubrication system for an earth boring drill bit and methods for filling and retrofit installing thereof
US5381868A (en) * 1993-10-08 1995-01-17 Triumph*Lor Inc Sealed bearing roller reamer
US6619412B2 (en) 1996-09-09 2003-09-16 Smith International, Inc. Protected lubricant reservoir for sealed earth boring drill bit
US6116357A (en) * 1996-09-09 2000-09-12 Smith International, Inc. Rock drill bit with back-reaming protection
US6138778A (en) * 1999-08-20 2000-10-31 Camco International Inc. Rock bit lubricant relief valve
GB2365038B (en) * 2000-07-27 2004-06-02 Walker & Co James Ltd Sealing structure for a rock drill bit
US6802380B2 (en) 2001-08-31 2004-10-12 Halliburton Energy Services Inc. Pressure relief system and methods of use and making
US8448723B2 (en) * 2006-08-02 2013-05-28 Burintekh USA, LLC Seal assembly for drill bit

Also Published As

Publication number Publication date
GB1397970A (en) 1975-06-18
CA967552A (en) 1975-05-13
DE2258367A1 (de) 1973-05-30
US3721306A (en) 1973-03-20
AR201187A1 (es) 1975-02-21

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