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 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
    • E21B10/46—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 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
    • E21B10/46—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
IT679193D IT679193A (de)

Publications (1)

Publication Number Publication Date
IT679193A true IT679193A (de)

Family

ID=1762055

Family Applications (1)

Application Number Title Priority Date Filing Date
IT679193D IT679193A (de)

Country Status (1)

Country Link
IT (1) IT679193A (de)

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 (de) * 1984-01-16 1985-07-24 CDP, Ltd. Selbstschärfender Fräsmeissel
EP0169683A2 (de) * 1984-07-19 1986-01-29 Reed Tool Company Limited Drehbohrmeissel
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 (de) * 1984-01-16 1985-07-24 CDP, Ltd. Selbstschärfender Fräsmeissel
EP0149530A3 (de) * 1984-01-16 1986-02-05 CDP, Ltd. Selbstschärfender Fräsmeissel
EP0169683A2 (de) * 1984-07-19 1986-01-29 Reed Tool Company Limited Drehbohrmeissel
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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