IT679193A - - Google Patents

Info

Publication number
IT679193A
IT679193A IT679193DA IT679193A IT 679193 A IT679193 A IT 679193A IT 679193D A IT679193D A IT 679193DA IT 679193 A IT679193 A IT 679193A
Authority
IT
Italy
Application number
Other languages
Italian (it)
Publication of IT679193A publication Critical patent/IT679193A/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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts
    • E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
    • 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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type

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)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
IT679193D IT679193A (no)

Publications (1)

Publication Number Publication Date
IT679193A true IT679193A (no)

Family

ID=1762055

Family Applications (1)

Application Number Title Priority Date Filing Date
IT679193D IT679193A (no)

Country Status (1)

Country Link
IT (1) IT679193A (no)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723932A1 (de) * 1976-06-24 1978-01-05 Gen Electric Rotary-bohrmeissel
DE2719330A1 (de) * 1977-04-30 1978-11-09 Christensen Inc Bohrmeissel, -krone o.dgl. bohrwerkzeug
US4148368A (en) * 1976-09-27 1979-04-10 Smith International, Inc. Rock bit with wear resistant inserts
US4190126A (en) * 1976-12-28 1980-02-26 Tokiwa Industrial Co., Ltd. Rotary abrasive drilling bit
US4234048A (en) * 1978-06-12 1980-11-18 Christensen, Inc. Drill bits embodying impregnated segments
FR2504589A1 (fr) * 1981-04-24 1982-10-29 Vennin Henri Outil de forage monobloc rotatif comportant des elements de coupe diamantes et des buses
EP0149530A2 (en) * 1984-01-16 1985-07-24 CDP, Ltd. Self sharpening drag bit assembly
EP0169683A2 (en) * 1984-07-19 1986-01-29 Reed Tool Company Limited Improvements in or relating to rotary drill bits
US4570726A (en) * 1982-10-06 1986-02-18 Megadiamond Industries, Inc. Curved contact portion on engaging elements for rotary type drag bits
US4991670A (en) * 1984-07-19 1991-02-12 Reed Tool Company, Ltd. Rotary drill bit for use in drilling holes in subsurface earth formations
WO1992011437A1 (en) * 1990-12-19 1992-07-09 Kennametal Inc. Insert having a surface of carbide particles
US5279375A (en) * 1992-03-04 1994-01-18 Baker Hughes Incorporated Multidirectional drill bit cutter

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2723932A1 (de) * 1976-06-24 1978-01-05 Gen Electric Rotary-bohrmeissel
US4109737A (en) * 1976-06-24 1978-08-29 General Electric Company Rotary drill bit
US4148368A (en) * 1976-09-27 1979-04-10 Smith International, Inc. Rock bit with wear resistant inserts
US4190126A (en) * 1976-12-28 1980-02-26 Tokiwa Industrial Co., Ltd. Rotary abrasive drilling bit
DE2719330A1 (de) * 1977-04-30 1978-11-09 Christensen Inc Bohrmeissel, -krone o.dgl. bohrwerkzeug
FR2388983A1 (fr) * 1977-04-30 1978-11-24 Christensen Inc Trepan de forage, cone de forage ou autres outils de forage comportant des pieces diamantees rapportees
US4200159A (en) * 1977-04-30 1980-04-29 Christensen, Inc. Cutter head, drill bit and similar drilling tools
US4234048A (en) * 1978-06-12 1980-11-18 Christensen, Inc. Drill bits embodying impregnated segments
FR2504589A1 (fr) * 1981-04-24 1982-10-29 Vennin Henri Outil de forage monobloc rotatif comportant des elements de coupe diamantes et des buses
US4570726A (en) * 1982-10-06 1986-02-18 Megadiamond Industries, Inc. Curved contact portion on engaging elements for rotary type drag bits
EP0149530A2 (en) * 1984-01-16 1985-07-24 CDP, Ltd. Self sharpening drag bit assembly
EP0149530A3 (en) * 1984-01-16 1986-02-05 CDP, Ltd. Self sharpening drag bit assembly
EP0169683A2 (en) * 1984-07-19 1986-01-29 Reed Tool Company Limited Improvements in or relating to rotary drill bits
EP0169683A3 (en) * 1984-07-19 1986-06-11 Nl Petroleum Products Limited Improvements in or relating to rotary drill bits
US4718505A (en) * 1984-07-19 1988-01-12 Nl Petroleum Products Limited Rotary drill bits
US4991670A (en) * 1984-07-19 1991-02-12 Reed Tool Company, Ltd. Rotary drill bit for use in drilling holes in subsurface earth formations
WO1992011437A1 (en) * 1990-12-19 1992-07-09 Kennametal Inc. Insert having a surface of carbide particles
US5131481A (en) * 1990-12-19 1992-07-21 Kennametal Inc. Insert having a surface of carbide particles
US5279375A (en) * 1992-03-04 1994-01-18 Baker Hughes Incorporated Multidirectional drill bit cutter

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