IT1089838B - Perfezionamento negli scalpelli rotanti per trivellazioni - Google Patents

Perfezionamento negli scalpelli rotanti per trivellazioni

Info

Publication number
IT1089838B
IT1089838B IT50954/77A IT5095477A IT1089838B IT 1089838 B IT1089838 B IT 1089838B IT 50954/77 A IT50954/77 A IT 50954/77A IT 5095477 A IT5095477 A IT 5095477A IT 1089838 B IT1089838 B IT 1089838B
Authority
IT
Italy
Prior art keywords
drilling
improvement
chisels
rotary
rotary chisels
Prior art date
Application number
IT50954/77A
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 IT1089838B publication Critical patent/IT1089838B/it

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
    • E21B10/20—Roller bits characterised by detachable or adjustable parts, e.g. legs or axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K15/00—Electron-beam welding or cutting
    • B23K15/0046—Welding
    • B23K15/0053—Seam welding
    • 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
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/002—Drill-bits
IT50954/77A 1976-11-12 1977-09-09 Perfezionamento negli scalpelli rotanti per trivellazioni IT1089838B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/741,167 US4043411A (en) 1976-11-12 1976-11-12 Rotary rock bit with the bearing pin fused to the rock bit arm

Publications (1)

Publication Number Publication Date
IT1089838B true IT1089838B (it) 1985-06-18

Family

ID=24979655

Family Applications (1)

Application Number Title Priority Date Filing Date
IT50954/77A IT1089838B (it) 1976-11-12 1977-09-09 Perfezionamento negli scalpelli rotanti per trivellazioni

Country Status (6)

Country Link
US (1) US4043411A (it)
CA (1) CA1059984A (it)
DE (1) DE2751107A1 (it)
FR (1) FR2372675A1 (it)
GB (1) GB1579439A (it)
IT (1) IT1089838B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4098150A (en) * 1977-01-24 1978-07-04 Dresser Industries, Inc. Cone locking system for a rotary rock bit
US4157122A (en) * 1977-06-22 1979-06-05 Morris William A Rotary earth boring drill and method of assembly thereof
US4127043A (en) * 1977-06-17 1978-11-28 Smith International, Inc. Rock bit with welded bearing pins
US4145094A (en) * 1977-11-09 1979-03-20 Smith International, Inc. Rotary rock bit and method of making same
US4176724A (en) * 1977-11-14 1979-12-04 Smith International, Inc. Rotary rock bit and method of making same
US4187743A (en) * 1978-04-21 1980-02-12 Smith International, Inc. Rock bit and method of manufacture
US4256194A (en) * 1978-05-19 1981-03-17 Varel Manufacturing Company Rotary drill bit having a solid forged, unitary body
US4266622A (en) * 1979-01-15 1981-05-12 Smith International, Inc. Rotary rock bit and method of making same
US4350060A (en) * 1979-01-15 1982-09-21 Smith International, Inc. Method of making a rotary rock bit
US4209684A (en) * 1979-02-26 1980-06-24 Evans Robert F Fusion technique of assembling rotary drill bit and adjusting gage of cutting elements
US4333364A (en) * 1980-04-07 1982-06-08 Varel Manufacturing Company Method for manufacturing a rotary drill bit having a solid forged, unitary body
US4711143A (en) * 1986-07-25 1987-12-08 Nl Industries, Inc. Rock bit assembly method
US5016719A (en) * 1990-01-24 1991-05-21 Western Rock Bit Company Limited Rotary cone type rock bits
US5944125A (en) * 1997-06-19 1999-08-31 Varel International, Inc. Rock bit with improved thrust face

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1989261A (en) * 1932-12-01 1935-01-29 Reed Roller Bit Co Roller bit
US2086397A (en) * 1935-06-22 1937-07-06 Guiberson Corp Drill bit
US2076002A (en) * 1935-11-06 1937-04-06 Chicago Pneumatic Tool Co Antifriction bearing assembly for earth boring drills
US2165584A (en) * 1936-07-22 1939-07-11 Smith Roller bit
US2194675A (en) * 1937-04-05 1940-03-26 David C Vance Drill bit
US2470695A (en) * 1947-11-17 1949-05-17 Globe Oil Tools Co Cone type well drilling bit
US2728559A (en) * 1951-12-10 1955-12-27 Reed Roller Bit Co Drill bits
US2697014A (en) * 1951-12-24 1954-12-14 Reed Roiler Bit Company Drill bit
US3086601A (en) * 1960-07-25 1963-04-23 Hughes Tool Co Rock bit with means for resisting radial thrust
US3239431A (en) * 1963-02-21 1966-03-08 Knapp Seth Raymond Rotary well bits
US3907191A (en) * 1973-10-24 1975-09-23 Dresser Ind Method of constructing a rotary rock bit
US3987859A (en) * 1973-10-24 1976-10-26 Dresser Industries, Inc. Unitized rotary rock bit

Also Published As

Publication number Publication date
DE2751107A1 (de) 1978-07-20
FR2372675B1 (it) 1982-12-17
CA1059984A (en) 1979-08-07
US4043411A (en) 1977-08-23
GB1579439A (en) 1980-11-19
FR2372675A1 (fr) 1978-06-30

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