FR2375428A1 - Trepan rotatif et monobloc de forage - Google Patents

Trepan rotatif et monobloc de forage

Info

Publication number
FR2375428A1
FR2375428A1 FR7615097A FR7615097A FR2375428A1 FR 2375428 A1 FR2375428 A1 FR 2375428A1 FR 7615097 A FR7615097 A FR 7615097A FR 7615097 A FR7615097 A FR 7615097A FR 2375428 A1 FR2375428 A1 FR 2375428A1
Authority
FR
France
Prior art keywords
blade
axis
rotated
monoblock
high speed
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.)
Granted
Application number
FR7615097A
Other languages
English (en)
Other versions
FR2375428B1 (fr
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Priority to FR7615097A priority Critical patent/FR2375428A1/fr
Priority to BE177716A priority patent/BE854807A/fr
Publication of FR2375428A1 publication Critical patent/FR2375428A1/fr
Application granted granted Critical
Publication of FR2375428B1 publication Critical patent/FR2375428B1/fr
Granted 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
    • E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
    • 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
    • E21B10/02—Core bits
    • E21B10/04—Core bits with core destroying means
    • 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
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids

Abstract

L'invention concerne un trépan rotatif et monobloc pour le forage. Le trépan comporte d'une part un corps ayant une forme extérieure sensiblement de révolution par rapport à un axe de révolution et un forme vers le haut un filetage et vers le bas une surface convexe et au travers duquel sont ménagés des conduits de passage de la boue de forage, d'autre part, une pluralité de picots munis chacun à leur extrémité d'une surface de diamant synthétique polycristallin et implantés dans ladite surface convexe et il est caractérisé par le fait que le corps forme au voisinage de l'axe de rotation une surface concave sensiblement conique et qu'il comporte au moins une lame de faible épaisseur qui s'étend radialement à partir de l'axe de révolution jusqu'à la périphérie de la surface concave et est en saillie par rapport à ladite surface, le profil de cette lame étant tel que l'extrémité centrale soit la plus haute et que l'extrémité périphérique soit la plus basse, cette lame formant une arête dure et coupante continue, et par le fait qu'il comporte des buses de passage de la boue de forage disposées à côté de ladite lame et à proximité de l'axe de révolution. Le trépan est destiné au forage de formations tendres ou de duretés moyennes.
FR7615097A 1976-05-19 1976-05-19 Trepan rotatif et monobloc de forage Granted FR2375428A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7615097A FR2375428A1 (fr) 1976-05-19 1976-05-19 Trepan rotatif et monobloc de forage
BE177716A BE854807A (fr) 1976-05-19 1977-05-18 Trepan rotatif et monobloc de forage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7615097A FR2375428A1 (fr) 1976-05-19 1976-05-19 Trepan rotatif et monobloc de forage

Publications (2)

Publication Number Publication Date
FR2375428A1 true FR2375428A1 (fr) 1978-07-21
FR2375428B1 FR2375428B1 (fr) 1982-10-22

Family

ID=9173342

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7615097A Granted FR2375428A1 (fr) 1976-05-19 1976-05-19 Trepan rotatif et monobloc de forage

Country Status (2)

Country Link
BE (1) BE854807A (fr)
FR (1) FR2375428A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495216A1 (fr) * 1980-12-01 1982-06-04 Christensen Inc Trepan de forage
FR2504589A1 (fr) * 1981-04-24 1982-10-29 Vennin Henri Outil de forage monobloc rotatif comportant des elements de coupe diamantes et des buses
FR2545530A1 (fr) * 1983-04-28 1984-11-09 Sumitomo Metal Mining Co Bouts rapportes pour trepans d'un dispositif de forage
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
US6510906B1 (en) 1999-11-29 2003-01-28 Baker Hughes Incorporated Impregnated bit with PDC cutters in cone area
BE1014014A5 (fr) * 1999-11-29 2003-02-04 Baker Hughes Inc Trepan impregne comportant des elements de coupe pdc dans la zone de cone.
US6843333B2 (en) 1999-11-29 2005-01-18 Baker Hughes Incorporated Impregnated rotary drag bit
US7730976B2 (en) 2007-10-31 2010-06-08 Baker Hughes Incorporated Impregnated rotary drag bit and related methods

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495216A1 (fr) * 1980-12-01 1982-06-04 Christensen Inc Trepan de forage
FR2504589A1 (fr) * 1981-04-24 1982-10-29 Vennin Henri Outil de forage monobloc rotatif comportant des elements de coupe diamantes et des buses
FR2545530A1 (fr) * 1983-04-28 1984-11-09 Sumitomo Metal Mining Co Bouts rapportes pour trepans d'un dispositif de forage
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
US6510906B1 (en) 1999-11-29 2003-01-28 Baker Hughes Incorporated Impregnated bit with PDC cutters in cone area
BE1014014A5 (fr) * 1999-11-29 2003-02-04 Baker Hughes Inc Trepan impregne comportant des elements de coupe pdc dans la zone de cone.
US6843333B2 (en) 1999-11-29 2005-01-18 Baker Hughes Incorporated Impregnated rotary drag bit
US7730976B2 (en) 2007-10-31 2010-06-08 Baker Hughes Incorporated Impregnated rotary drag bit and related methods

Also Published As

Publication number Publication date
BE854807A (fr) 1977-11-18
FR2375428B1 (fr) 1982-10-22

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse