EP0776409B1 - Taillant d'outil de forage monobloc - Google Patents
Taillant d'outil de forage monobloc Download PDFInfo
- Publication number
- EP0776409B1 EP0776409B1 EP96922074A EP96922074A EP0776409B1 EP 0776409 B1 EP0776409 B1 EP 0776409B1 EP 96922074 A EP96922074 A EP 96922074A EP 96922074 A EP96922074 A EP 96922074A EP 0776409 B1 EP0776409 B1 EP 0776409B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tip
- holder
- face
- polycrystalline diamond
- rock formation
- 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.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 25
- 239000011435 rock Substances 0.000 claims description 25
- 229910003460 diamond Inorganic materials 0.000 claims description 10
- 239000010432 diamond Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000005520 cutting process Methods 0.000 description 25
- 238000005755 formation reaction Methods 0.000 description 21
- 240000008042 Zea mays Species 0.000 description 4
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004459 forage Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
Images
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
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
Definitions
- the present invention relates to cutting elements or bits intended to be fixed on drilling tools monoblocks used in drilling rock formations, for example in oil wells or in drilling the cement.
- the bit 10 is positioned relative to the formation rocky 22, as shown in Figure 1, i.e. so that the free flat face 24 of the wafer 16 do with the normal N on the surface 25 of the formation rocky an acute angle ⁇ , oriented in the opposite direction to the direction of movement F of the cutting edge.
- the cutter has a operating mode by compression: plate 16 attacks the formation frontally by its flat face 24 and the compresses, and by reaction, the rock exerts pressure on the flat face 24. Since the imprint of the cutting edge on the rock is shaped like a cylinder sector, the cutting must be strong enough to attack the rock frontally over the entire extent of said footprint.
- the cut can be made with good efficiency: a rock chip 26 is formed which breaks in front of the flat face 24 and which is ground with accumulation small debris in front of the face of the plate.
- the cutting is less effective because of the considerable force that is required to break the rock simultaneously over the entire surface of the imprint. In addition, said force generally leads to vibrational phenomena which are harmful for the duration of tool life.
- this cutter is not suitable for drilling on the one hand, because the insert is not not done in PDC and on the other hand, because the insert is too thin in the direction of the reaction it undergoes from the rock formation. This thickness, which is actually equal to the width of the ring in the radial direction, is insufficient to be able withstand the compression exerted by the rock formation.
- US Patent 4,373,593 relates to a tool cutter monoblock for drilling a rock formation which includes a polycrystalline diamond cutting portion cut into wedge shape and wrapped at least on its periphery by a support portion. But, as for the previous patent, the cutting portion has too low thickness in the direction perpendicular to the axis of rotation of the tool to be able to withstand the reaction of the rock formation.
- the present invention aims to remedy the drawbacks of the aforementioned prior art and it relates to this effect a one-piece tool cutter according to claims 1 and 5.
- the cutter according to the invention is distinguished from that of US patent 4,073,354 by the fact that the wafer has a substantially 90 ° orientation relative to the orientation it has in said patent. So she attacks the rock formation by its cylindrical wall and works in shear and not in compression. Thanks to that orientation, the brochure present, facing the training rock, maximum PDC depth, substantially equal the diameter of the wafer. This great depth gives to the wafer a great resistance compared to the efforts shear exerted by the rock formation.
- the cutting edge 28 of the invention illustrated by FIG. 2 includes a cylindrical support 30 made of tungsten carbide case-hardened, fixed in a blind hole 20 drilled in the tool monobloc 18. It has an inclined flat face 32 on which is fixed, by soldering or otherwise, a plate 34 in PDC in the shape of a cylindrical disc.
- the free face 36 of the wafer made with the normal N at the surface 25 of the rock formation an acute angle ⁇ oriented in the same direction as the direction of movement F of the cutting edge.
- the position of the plate according to Figure 2 is practically 90 ° with respect to that of FIG. 1 and allows to work with ⁇ inclinations of the face 36 "almost flat" with respect to the surface 25 of the formation 38.
- Rock can thus be attacked from more angles aggressive than in the case of technical cutters anterior.
- the inclination ⁇ can vary between 0 and 25 °.
- the wafer works with its cylindrical side wall 40 over its entire thickness. It therefore operates a punching of the rock at its lowest point P at the same time as a shear.
- the plate 34 has a uniform thickness and for reasons of economy, its thickness is relatively small, of the order of 0.5 to 1 mm.
- the cutting thickness h will therefore also be small.
- the cutter according to this embodiment will therefore be used essentially to work on semi-hard to hard terrains.
- the ring 52 can be even thicker and higher than in the embodiment of FIG. 3.
- the tool provided with such cutters can therefore drill formations ranging from softer to harder.
- Another advantage of this cutter is that core 56 in tungsten carbide can be drilled with a hole 58 to place a screw by means of which the cutter can be attached to the tool body.
- the cutting is tapered and present as in the embodiment of FIG. 4 a PDC ring 60 at the periphery of its large base.
- the side wall of the ring is confused with the tapered wall of the cutting edge.
Description
- elle permet d'utiliser des angles d'attaque plus agressifs et donc plus performants, en inclinant la plaquette "presque à plat" sur la surface de la formation ;
- la plaquette ne travaille plus avec sa face plate en contact avec le copeau, mais avec sa paroi latérale cylindrique (tout le long de son épaisseur) au contact avec la formation. Le copeau qui se forme n'est donc plus en contact avec la face plate mais avec la paroi cylindrique de la plaquette. Il en résulte que la plaquette réalise la rupture de la roche non seulement par cisaillement mais également par poinçonnement ;
- la distribution des forces se fait radialement sur la paroi cylindrique de la plaquette, ce qui a pour effet de réduire le phénomène vibratoire de l'outil ;
- l'épaisseur de la couche diamantée qui subit les efforts de coupe n'est plus de quelques dixièmes de millimètre, comme c'est le cas de la plaquette de la figure 1, mais de plusieurs millimètres. La durée de vie de la plaquette est donc notablement augmentée.
Claims (5)
- Taillant d'outil monobloc pour le forage d'une formation rocheuse, du type comprenant un support cylindrique (30) en carbure métallique cémenté, pouvant être fixé sur l'outil (18), ledit support comportant à une extrémité une face terminale (32) qui est entièrement recouverte par une plaquette (34 ; 50) en forme de disque cylindrique formée à base de particules de diamant polycristallin et comprenant une paroi latérale cylindrique (40) et une face libre sensiblement plate (36), caractérisé en ce que la plaquette (34 ; 50) est disposée de manière que sa face plate libre (36) fasse avec la normale N à la surface (25) de la formation rocheuse un angle aigu (α), orienté dans le même sens que le sens de déplacement (F) du taillant, de sorte que la plaquette attaque la formation rocheuse par sa paroi latérale (40).
- Taillant selon la revendication 1, caractérisé en ce que l'angle (β), complémentaire de (α), que fait le plan de la face plate libre (36) de la plaquette avec la surface (25) de la formation rocheuse qui a été forée est compris entre 0 et 25°.
- Taillant selon la revendication 1, caractérisé en ce que la plaquette (34) a une épaisseur constante sur toute la surface du support sur laquelle elle est fixée.
- Taillant selon la revendication 1, caractérisé en ce que la plaquette (50) est fixée sur une face du support (30), qui présente des reliefs en creux (44) et en saillie (46) et qui comporte également à sa périphérie une rainure (48) de profondeur supérieure à celle desdits reliefs en creux, la couche de diamant polycristallin qui constitue la plaquette emplissant lesdits reliefs en creux et recouvrant d'une mince couche les sommets des reliefs en saillie.
- Taillant selon la revendication 1, caractérisé en ce que la plaquette est constituée par un anneau (52) en diamant polycristallin fixé dans une rainure périphérique (54) formée sur le bord d'une face inclinée du support (30), le restant de ladite face du support n'étant pas recouvert de diamant polycristallin, et en ce que le support (30) est percé d'un trou (58) dans la région non recouverte de diamant polycristallin, pour le passage d'une vis destinée à fixer le taillant sur le corps de l'outil monobloc.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9507240A FR2735522B1 (fr) | 1995-06-16 | 1995-06-16 | Taillant d'outil de forage monobloc |
FR9507240 | 1995-06-16 | ||
PCT/FR1996/000861 WO1997000372A1 (fr) | 1995-06-16 | 1996-06-07 | Taillant d'outil de forage monobloc |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0776409A1 EP0776409A1 (fr) | 1997-06-04 |
EP0776409B1 true EP0776409B1 (fr) | 2000-07-26 |
Family
ID=9480096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96922074A Expired - Lifetime EP0776409B1 (fr) | 1995-06-16 | 1996-06-07 | Taillant d'outil de forage monobloc |
Country Status (11)
Country | Link |
---|---|
US (1) | US5823277A (fr) |
EP (1) | EP0776409B1 (fr) |
AR (1) | AR002487A1 (fr) |
AU (1) | AU712588B2 (fr) |
CA (1) | CA2197351C (fr) |
CO (1) | CO4520157A1 (fr) |
DE (1) | DE69609478T2 (fr) |
FR (1) | FR2735522B1 (fr) |
NO (1) | NO310312B1 (fr) |
RU (1) | RU2166608C2 (fr) |
WO (1) | WO1997000372A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6332503B1 (en) * | 1992-01-31 | 2001-12-25 | Baker Hughes Incorporated | Fixed cutter bit with chisel or vertical cutting elements |
US5447208A (en) * | 1993-11-22 | 1995-09-05 | Baker Hughes Incorporated | Superhard cutting element having reduced surface roughness and method of modifying |
US6571891B1 (en) | 1996-04-17 | 2003-06-03 | Baker Hughes Incorporated | Web cutter |
US6003623A (en) * | 1998-04-24 | 1999-12-21 | Dresser Industries, Inc. | Cutters and bits for terrestrial boring |
US6527069B1 (en) | 1998-06-25 | 2003-03-04 | Baker Hughes Incorporated | Superabrasive cutter having optimized table thickness and arcuate table-to-substrate interfaces |
US6412580B1 (en) | 1998-06-25 | 2002-07-02 | Baker Hughes Incorporated | Superabrasive cutter with arcuate table-to-substrate interfaces |
US7011169B2 (en) * | 2003-11-10 | 2006-03-14 | Baker Hughes Incorporated | Expanded coverage carbide compact |
US7243745B2 (en) * | 2004-07-28 | 2007-07-17 | Baker Hughes Incorporated | Cutting elements and rotary drill bits including same |
CN102587839A (zh) * | 2012-03-23 | 2012-07-18 | 王建奎 | 一种聚晶金刚石复合片钻头 |
CN102699555A (zh) * | 2012-06-19 | 2012-10-03 | 中煤科工集团西安研究院 | 聚晶金刚石复合片与钻头基体的过渡连接件及其连接工艺 |
US10307891B2 (en) | 2015-08-12 | 2019-06-04 | Us Synthetic Corporation | Attack inserts with differing surface finishes, assemblies, systems including same, and related methods |
US10900291B2 (en) | 2017-09-18 | 2021-01-26 | Us Synthetic Corporation | Polycrystalline diamond elements and systems and methods for fabricating the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996027072A1 (fr) * | 1995-02-27 | 1996-09-06 | Champion Equipment Co. | Procede de coupe et outil de coupe rotatif |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4109737A (en) * | 1976-06-24 | 1978-08-29 | General Electric Company | Rotary drill bit |
US4373593A (en) * | 1979-03-16 | 1983-02-15 | Christensen, Inc. | Drill bit |
US4660659A (en) * | 1983-02-22 | 1987-04-28 | Nl Industries, Inc. | Drag type drill bit |
GB2138864B (en) * | 1983-04-28 | 1986-07-30 | Sumitomo Metal Mining Co | Roller drill bits |
GB8711255D0 (en) * | 1987-05-13 | 1987-06-17 | Nl Petroleum Prod | Rotary drill bits |
US4981184A (en) * | 1988-11-21 | 1991-01-01 | Smith International, Inc. | Diamond drag bit for soft formations |
US4932484A (en) * | 1989-04-10 | 1990-06-12 | Amoco Corporation | Whirl resistant bit |
US5120327A (en) * | 1991-03-05 | 1992-06-09 | Diamant-Boart Stratabit (Usa) Inc. | Cutting composite formed of cemented carbide substrate and diamond layer |
US5172778A (en) * | 1991-11-14 | 1992-12-22 | Baker-Hughes, Inc. | Drill bit cutter and method for reducing pressure loading of cutters |
US5279375A (en) * | 1992-03-04 | 1994-01-18 | Baker Hughes Incorporated | Multidirectional drill bit cutter |
US5486137A (en) * | 1993-07-21 | 1996-01-23 | General Electric Company | Abrasive tool insert |
US5494477A (en) * | 1993-08-11 | 1996-02-27 | General Electric Company | Abrasive tool insert |
AU1095195A (en) * | 1993-12-17 | 1995-07-03 | Kennametal Inc. | Polycrystalline diamond composite cutting insert for attachment to a tool |
ZA954736B (en) * | 1994-06-16 | 1996-01-26 | De Beers Ind Diamond | Tool component |
-
1995
- 1995-06-16 FR FR9507240A patent/FR2735522B1/fr not_active Expired - Lifetime
-
1996
- 1996-06-07 CA CA002197351A patent/CA2197351C/fr not_active Expired - Lifetime
- 1996-06-07 WO PCT/FR1996/000861 patent/WO1997000372A1/fr active IP Right Grant
- 1996-06-07 RU RU97104071/03A patent/RU2166608C2/ru not_active IP Right Cessation
- 1996-06-07 DE DE69609478T patent/DE69609478T2/de not_active Expired - Lifetime
- 1996-06-07 US US08/793,726 patent/US5823277A/en not_active Expired - Lifetime
- 1996-06-07 AU AU63081/96A patent/AU712588B2/en not_active Expired
- 1996-06-07 EP EP96922074A patent/EP0776409B1/fr not_active Expired - Lifetime
- 1996-06-14 CO CO96031227A patent/CO4520157A1/es unknown
- 1996-06-14 AR ARP960103164A patent/AR002487A1/es unknown
-
1997
- 1997-02-14 NO NO19970687A patent/NO310312B1/no not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996027072A1 (fr) * | 1995-02-27 | 1996-09-06 | Champion Equipment Co. | Procede de coupe et outil de coupe rotatif |
Also Published As
Publication number | Publication date |
---|---|
RU2166608C2 (ru) | 2001-05-10 |
CA2197351C (fr) | 2007-10-02 |
WO1997000372A1 (fr) | 1997-01-03 |
CA2197351A1 (fr) | 1997-01-03 |
US5823277A (en) | 1998-10-20 |
FR2735522B1 (fr) | 1997-09-05 |
FR2735522A1 (fr) | 1996-12-20 |
NO970687L (no) | 1997-03-13 |
DE69609478T2 (de) | 2002-05-08 |
NO310312B1 (no) | 2001-06-18 |
NO970687D0 (no) | 1997-02-14 |
AR002487A1 (es) | 1998-03-25 |
CO4520157A1 (es) | 1997-10-15 |
AU6308196A (en) | 1997-01-15 |
DE69609478D1 (de) | 2000-08-31 |
EP0776409A1 (fr) | 1997-06-04 |
AU712588B2 (en) | 1999-11-11 |
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