EP0776409B1 - Taillant d'outil de forage monobloc - Google Patents

Taillant d'outil de forage monobloc Download PDF

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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
Application number
EP96922074A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0776409A1 (fr
Inventor
Robert Delwiche
Alain Besson
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.)
Dite Db Stratabit SA Ste
DB Stratabit SA
TOTAL
TotalEnergies SE
Original Assignee
Dite Db Stratabit SA Ste
DB Stratabit SA
TOTAL
Total SE
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 Dite Db Stratabit SA Ste, DB Stratabit SA, TOTAL, Total SE filed Critical Dite Db Stratabit SA Ste
Publication of EP0776409A1 publication Critical patent/EP0776409A1/fr
Application granted granted Critical
Publication of EP0776409B1 publication Critical patent/EP0776409B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B10/56—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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling Tools (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP96922074A 1995-06-16 1996-06-07 Taillant d'outil de forage monobloc Expired - Lifetime EP0776409B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9507240 1995-06-16
FR9507240A FR2735522B1 (fr) 1995-06-16 1995-06-16 Taillant d'outil de forage monobloc
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 (no)
EP (1) EP0776409B1 (no)
AR (1) AR002487A1 (no)
AU (1) AU712588B2 (no)
CA (1) CA2197351C (no)
CO (1) CO4520157A1 (no)
DE (1) DE69609478T2 (no)
FR (1) FR2735522B1 (no)
NO (1) NO310312B1 (no)
RU (1) RU2166608C2 (no)
WO (1) WO1997000372A1 (no)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027072A1 (en) * 1995-02-27 1996-09-06 Champion Equipment Co. Method of cutting and cutting rotative bit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
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
WO1995016530A1 (en) * 1993-12-17 1995-06-22 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996027072A1 (en) * 1995-02-27 1996-09-06 Champion Equipment Co. Method of cutting and cutting rotative bit

Also Published As

Publication number Publication date
DE69609478D1 (de) 2000-08-31
NO310312B1 (no) 2001-06-18
FR2735522B1 (fr) 1997-09-05
RU2166608C2 (ru) 2001-05-10
NO970687D0 (no) 1997-02-14
FR2735522A1 (fr) 1996-12-20
US5823277A (en) 1998-10-20
CO4520157A1 (es) 1997-10-15
EP0776409A1 (fr) 1997-06-04
CA2197351A1 (fr) 1997-01-03
NO970687L (no) 1997-03-13
DE69609478T2 (de) 2002-05-08
CA2197351C (fr) 2007-10-02
AU712588B2 (en) 1999-11-11
WO1997000372A1 (fr) 1997-01-03
AR002487A1 (es) 1998-03-25
AU6308196A (en) 1997-01-15

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