EP0044817A3 - Drill bit - Google Patents

Drill bit Download PDF

Info

Publication number
EP0044817A3
EP0044817A3 EP81810301A EP81810301A EP0044817A3 EP 0044817 A3 EP0044817 A3 EP 0044817A3 EP 81810301 A EP81810301 A EP 81810301A EP 81810301 A EP81810301 A EP 81810301A EP 0044817 A3 EP0044817 A3 EP 0044817A3
Authority
EP
European Patent Office
Prior art keywords
drill bit
shaft
rotary element
hard
borehole
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.)
Withdrawn
Application number
EP81810301A
Other languages
German (de)
French (fr)
Other versions
EP0044817A2 (en
Inventor
René Treyvaud
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0044817A2 publication Critical patent/EP0044817A2/en
Publication of EP0044817A3 publication Critical patent/EP0044817A3/en
Withdrawn legal-status Critical Current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
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • 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
    • E21B10/083—Roller bits with longitudinal axis, e.g. wobbling or nutating roller bit
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers

Abstract

Le corps de trépan (2) est fixé à l'extrémité inférieure d'un train de tiges engagées dans le trou de sondage (1). Le bossage (4) faisant saillie à l'intérieur de la cavité sphérique (3) supporte l'arbre (6) qui porte l'élément rotatif (11) de forme sphérique maintenu en place par l'écrou (7). La surface extérieure de l'élément (11) est garnie de particules dures, par exemple des grains de métal dur ou des éléments de diamant. Par suite de l'entraínement du corps de trépan (2) autour de son axe et du frottement de la surface (18), l'élément rotatif (11) tourne nécessairement sur l'arbre (6), de sorte que l'ensemble de la face inférieure du trou (1) est attaquée par abrasion. The drill bit body (2) is attached to the lower end of a drill string engaged in the borehole (1). The boss (4) projecting inside the spherical cavity (3) supports the shaft (6) which carries the rotary element (11) of spherical shape held in place by the nut (7). The outer surface of the element (11) is lined with particles hard, e.g. hard metal grains or elements diamond. As a result of the drill bit training (2) around its axis and the friction of the surface (18), the rotary element (11) necessarily rotates on the shaft (6), so that the entire underside of the hole (1) is abrasion attack.

EP81810301A 1980-07-23 1981-07-22 Drill bit Withdrawn EP0044817A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5632/80 1980-07-23
CH563280 1980-07-23

Publications (2)

Publication Number Publication Date
EP0044817A2 EP0044817A2 (en) 1982-01-27
EP0044817A3 true EP0044817A3 (en) 1982-08-25

Family

ID=4296857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81810301A Withdrawn EP0044817A3 (en) 1980-07-23 1981-07-22 Drill bit

Country Status (1)

Country Link
EP (1) EP0044817A3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3306598A1 (en) * 1983-02-25 1984-10-25 Helmut Dr. 4350 Recklinghausen Fritz Ball drilling head
FR2574847B1 (en) * 1984-12-13 1987-01-16 Soletanche DEVICE FOR PERFORMING LARGE DIAMETER CIRCULAR DRILLING IN THE GROUND
IT1267990B1 (en) * 1994-01-21 1997-02-20 Soilmec Spa TOOL AND METHOD FOR CARRYING OUT EXCAVATIONS WITHOUT REMOVING THE SOIL AND FILLING THEM WITH CONCRETE.
US6119797A (en) * 1998-03-19 2000-09-19 Kingdream Public Ltd. Co. Single cone earth boring bit
CN105909178A (en) * 2016-05-31 2016-08-31 陕西金刚石油机械有限公司 Mono-cone bit with embedded polycrystalline composite teeth

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1974756A (en) * 1932-07-26 1934-09-25 Superior Rig And Bit Company Drill bit
US2009742A (en) * 1933-05-15 1935-07-30 Chicago Pneumatic Tool Co Face bit
US2013839A (en) * 1933-01-16 1935-09-10 Rowland O Pickin Roller drilling bit
US2025258A (en) * 1934-08-06 1935-12-24 John A Zublin Cutter for drill bits
US2597669A (en) * 1950-01-20 1952-05-20 Inspiration Mining & Dev Compa Drill bit
FR1025745A (en) * 1949-10-17 1953-04-20 Hughes Tool Co Milling cutter for well drilling bits and its manufacturing process
US2667334A (en) * 1951-03-03 1954-01-26 Standard Oil Dev Co Full hole diamond bit
US2833520A (en) * 1957-01-07 1958-05-06 Robert G Owen Annular mill for use in oil wells
DE1224229B (en) * 1964-12-21 1966-09-08 Robert Hochstrasser Method for drilling or extension drilling in the ground and device for carrying out the method
US3318399A (en) * 1965-03-22 1967-05-09 Exxon Production Research Co Diamond bits and similar tools
US3385683A (en) * 1963-12-09 1968-05-28 Edward B Williams Iii Method of making and applying an abrasive to metal surfaces
US3695370A (en) * 1970-10-14 1972-10-03 Hycalog Inc Drilling apparatus
FR2196428A1 (en) * 1972-08-18 1974-03-15 Erap
US4203496A (en) * 1978-10-16 1980-05-20 Smith International, Inc. Longitudinal axis roller drill bit with gage inserts protection

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1974756A (en) * 1932-07-26 1934-09-25 Superior Rig And Bit Company Drill bit
US2013839A (en) * 1933-01-16 1935-09-10 Rowland O Pickin Roller drilling bit
US2009742A (en) * 1933-05-15 1935-07-30 Chicago Pneumatic Tool Co Face bit
US2025258A (en) * 1934-08-06 1935-12-24 John A Zublin Cutter for drill bits
FR1025745A (en) * 1949-10-17 1953-04-20 Hughes Tool Co Milling cutter for well drilling bits and its manufacturing process
US2597669A (en) * 1950-01-20 1952-05-20 Inspiration Mining & Dev Compa Drill bit
US2667334A (en) * 1951-03-03 1954-01-26 Standard Oil Dev Co Full hole diamond bit
US2833520A (en) * 1957-01-07 1958-05-06 Robert G Owen Annular mill for use in oil wells
US3385683A (en) * 1963-12-09 1968-05-28 Edward B Williams Iii Method of making and applying an abrasive to metal surfaces
DE1224229B (en) * 1964-12-21 1966-09-08 Robert Hochstrasser Method for drilling or extension drilling in the ground and device for carrying out the method
US3318399A (en) * 1965-03-22 1967-05-09 Exxon Production Research Co Diamond bits and similar tools
US3695370A (en) * 1970-10-14 1972-10-03 Hycalog Inc Drilling apparatus
FR2196428A1 (en) * 1972-08-18 1974-03-15 Erap
US4203496A (en) * 1978-10-16 1980-05-20 Smith International, Inc. Longitudinal axis roller drill bit with gage inserts protection

Also Published As

Publication number Publication date
EP0044817A2 (en) 1982-01-27

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Effective date: 19841002