EP0548163A1 - Taillant d'outil de forage auto-affutable. - Google Patents
Taillant d'outil de forage auto-affutable.Info
- Publication number
- EP0548163A1 EP0548163A1 EP91916192A EP91916192A EP0548163A1 EP 0548163 A1 EP0548163 A1 EP 0548163A1 EP 91916192 A EP91916192 A EP 91916192A EP 91916192 A EP91916192 A EP 91916192A EP 0548163 A1 EP0548163 A1 EP 0548163A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutter
- grooves
- support
- cutter according
- self
- 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
Links
- 238000007493 shaping process Methods 0.000 title 1
- 239000011435 rock Substances 0.000 claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 230000001154 acute effect Effects 0.000 claims abstract description 6
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 6
- 239000010432 diamond Substances 0.000 claims abstract description 6
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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
- E21B10/5673—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a non planar or non circular cutting face
-
- 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
- E21B10/006—Drill bits providing a cutting edge which is self-renewable during drilling
-
- 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
-
- 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
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
Definitions
- the present invention relates to a cutter for a self-sharpening drilling tool.
- cutting edges of tools used in the f 5 oil drilling or mining are generally platelet-shaped comprising an outer layer polycrystalline
- Each cutter is brazed, either on a support such as a stud, itself crimped in the body of the tool, or on
- the object of the present invention is to remedy these drawbacks by proposing self-sharpening cutters, that is to say which are liable to break along surfaces having favorable orientations, each time the force applied to the the tool becomes greater than a given threshold.
- the subject of the invention is a drill bit cutter of the type defined above, characterized in that on the cutter and / or on its support are formed zones of lower resistance, such as grooves, which can initiate successive breaks making an acute relief angle with the rock formation to be drilled.
- the clearance angle is preferably between 25 and 55 °.
- Figure 1 is a perspective view of a drilling tool of a known type
- Figure 2 is a perspective view of a cutter attached to the stud, the grooves being formed on both of these two elements;
- Figures 3 to 6 show successive phases of the sharpening process of the cutter and the stud of Figure 2 ;
- Figures 7 to 11 are elevational views of several variants of formation of the grooves on the cutter and on the stud.
- the tool 10 comprises a steel body 12 carrying on its side wall a plurality of cutters 14 arranged in several rows.
- each cutter 14 is crimped into one end of a substantially cylindrical stud 18, the other end of which is itself crimped onto the body 12.
- the cutter is in the form of a circular plate comprising a first layer polycrystalline diamond 22, which is bonded, by means of a suitable binder, to a second layer 24 of tungsten carbide.
- each groove comprises two branches (only one being visible in FIG. 2) which descend from the cutter 14 into the stud, symmetrically with respect to the mediator plane of the cutter, and which meet at the back of the stud.
- Each groove thus defines a preferential breaking surface of the cutter and the stud.
- the weakening of the cutting edge is ensured by the choice of the orientation, the dimensions and the positioning of the grooves. Breaking according to a given breaking surface occurs when the cutter has undergone a certain degree of wear and a predetermined load is applied to it.
- FIG 2 there is shown a cutter fixed on stud free of any wear, and designated by 28 the rock formation to be drilled and by arrow j f the direction of movement of the cutter.
- the upper face makes an acute angle fleeing ⁇ with the wall of the rock formation, so that only the cutter 14 attacks the rock. The efficiency of the cutting edge is then optimum.
- FIG. 3 shows the cutter and the stud in a later state.
- the entire upper part of the cutter and the stud has been worn by the rock. Contact with the rock formation is now made by the entire upper flat surface 30.
- the cutting edge efficiency decreases. If a greater load is applied to keep the same efficiency, the cutting edge and the stud are broken according to the surface containing the first groove 26- ⁇ .
- the cutter then takes the sharpened shape shown in FIG. 4. ⁇ again, it has its maximum efficiency since it attacks the rock under the acute angle • - which is clearly greater than the limiting angle ⁇ indicated previously.
- the number of grooves can be any. In FIG. 2, only five have been indicated, by way of nonlimiting example.
- their spacing as well as their depth can also vary within wide limits, for example between 0.1 and 10 mm.
- the grooves all have the same width and the same depth.
- the grooves can define parallel planar surfaces, as in FIGS. 7 and 8 where, due to the perspective, only parallel rectilinear portions of grooves are seen.
- the grooves 26c are formed in perspective by broken lines formed by rectilinear sections.
- the grooves 26d are curved so that successive breaks are made on concave surfaces.
- the grooves can have their origin on the cutter 14 near the crystal zone in diamond
- the grooves may be discontinuous in the form of dots or lines.
- the grooves can go all around the cutter and the stud or only a part only of the latter.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9011386A FR2666843B1 (fr) | 1990-09-14 | 1990-09-14 | Taillant d'outil de forage auto-affutable. |
FR9011386 | 1990-09-14 | ||
PCT/FR1991/000720 WO1992005335A1 (fr) | 1990-09-14 | 1991-09-12 | Taillant d'outil de forage auto-affutable |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0548163A1 true EP0548163A1 (fr) | 1993-06-30 |
EP0548163B1 EP0548163B1 (fr) | 1994-05-25 |
Family
ID=9400340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91916192A Expired - Lifetime EP0548163B1 (fr) | 1990-09-14 | 1991-09-12 | Taillant d'outil de forage auto-affutable |
Country Status (10)
Country | Link |
---|---|
US (1) | US5301762A (fr) |
EP (1) | EP0548163B1 (fr) |
JP (1) | JPH06500836A (fr) |
CA (1) | CA2091676A1 (fr) |
DE (1) | DE69102139T2 (fr) |
DK (1) | DK0548163T3 (fr) |
ES (1) | ES2053336T3 (fr) |
FR (1) | FR2666843B1 (fr) |
NO (1) | NO930907D0 (fr) |
WO (1) | WO1992005335A1 (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5460233A (en) * | 1993-03-30 | 1995-10-24 | Baker Hughes Incorporated | Diamond cutting structure for drilling hard subterranean formations |
US5605198A (en) * | 1993-12-09 | 1997-02-25 | Baker Hughes Incorporated | Stress related placement of engineered superabrasive cutting elements on rotary drag bits |
US5590729A (en) * | 1993-12-09 | 1997-01-07 | Baker Hughes Incorporated | Superhard cutting structures for earth boring with enhanced stiffness and heat transfer capabilities |
US5435403A (en) * | 1993-12-09 | 1995-07-25 | Baker Hughes Incorporated | Cutting elements with enhanced stiffness and arrangements thereof on earth boring drill bits |
US5924501A (en) * | 1996-02-15 | 1999-07-20 | Baker Hughes Incorporated | Predominantly diamond cutting structures for earth boring |
US5706906A (en) * | 1996-02-15 | 1998-01-13 | Baker Hughes Incorporated | Superabrasive cutting element with enhanced durability and increased wear life, and apparatus so equipped |
US5967249A (en) * | 1997-02-03 | 1999-10-19 | Baker Hughes Incorporated | Superabrasive cutters with structure aligned to loading and method of drilling |
US5881830A (en) * | 1997-02-14 | 1999-03-16 | Baker Hughes Incorporated | Superabrasive drill bit cutting element with buttress-supported planar chamfer |
US6302224B1 (en) | 1999-05-13 | 2001-10-16 | Halliburton Energy Services, Inc. | Drag-bit drilling with multi-axial tooth inserts |
AU2004237810B2 (en) * | 2003-12-16 | 2010-09-23 | Voest-Alpine Bergtechnik Gesellschaft M.B.H. | Roadheading or mining machine with roof bolt drilling and setting devices |
US7373998B2 (en) * | 2004-04-01 | 2008-05-20 | Smith International, Inc. | Cutting element with improved cutter to blade transition |
US8936109B2 (en) | 2010-06-24 | 2015-01-20 | Baker Hughes Incorporated | Cutting elements for cutting tools |
US8875812B2 (en) | 2010-07-23 | 2014-11-04 | National Oilwell DHT, L.P. | Polycrystalline diamond cutting element and method of using same |
US8997900B2 (en) | 2010-12-15 | 2015-04-07 | National Oilwell DHT, L.P. | In-situ boron doped PDC element |
US20120199395A1 (en) * | 2011-02-07 | 2012-08-09 | Lynde Gerald D | Cutting elements having a pre-formed fracture plane for use in cutting tools |
WO2015013354A1 (fr) * | 2013-07-25 | 2015-01-29 | Ulterra Drilling Technologies, L.P. | Élément de support d'outil de coupe |
JP6468507B2 (ja) * | 2013-11-28 | 2019-02-13 | 国立研究開発法人産業技術総合研究所 | 坑井掘削用pdcカッターおよび坑井掘削用pdcビット |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3882749A (en) * | 1973-10-10 | 1975-05-13 | James C Tourek | Beavertooth cutting edge |
US4227106A (en) * | 1976-03-04 | 1980-10-07 | Emerson Electric Co. | High voltage induction motor without ladder insulation between motor windings and method of construction therefor |
DE2719330C3 (de) * | 1977-04-30 | 1984-01-05 | Christensen, Inc., 84115 Salt Lake City, Utah | Drehbohrmeißel |
GB2055411B (en) * | 1979-08-07 | 1983-01-12 | Land & Marine Eng Ltd | Cutting picks |
US4277106A (en) * | 1979-10-22 | 1981-07-07 | Syndrill Carbide Diamond Company | Self renewing working tip mining pick |
US4324300A (en) * | 1980-06-30 | 1982-04-13 | Logan Jr Clifford K | Rotary drill bit |
US4629373A (en) * | 1983-06-22 | 1986-12-16 | Megadiamond Industries, Inc. | Polycrystalline diamond body with enhanced surface irregularities |
US4784023A (en) * | 1985-12-05 | 1988-11-15 | Diamant Boart-Stratabit (Usa) Inc. | Cutting element having composite formed of cemented carbide substrate and diamond layer and method of making same |
GB8626919D0 (en) * | 1986-11-11 | 1986-12-10 | Nl Petroleum Prod | Rotary drill bits |
GB2212190B (en) * | 1987-11-12 | 1991-12-11 | Reed Tool Co | Improvements in cutting structures for rotary drill bits |
US4869330A (en) * | 1988-01-20 | 1989-09-26 | Eastman Christensen Company | Apparatus for establishing hydraulic flow regime in drill bits |
DE3833767A1 (de) * | 1988-10-05 | 1990-04-12 | Hilti Ag | Hohlbohrwerkzeug fuer gestein |
-
1990
- 1990-09-14 FR FR9011386A patent/FR2666843B1/fr not_active Expired - Lifetime
-
1991
- 1991-09-12 DK DK91916192.7T patent/DK0548163T3/da active
- 1991-09-12 CA CA002091676A patent/CA2091676A1/fr not_active Abandoned
- 1991-09-12 JP JP3514957A patent/JPH06500836A/ja active Pending
- 1991-09-12 DE DE69102139T patent/DE69102139T2/de not_active Expired - Fee Related
- 1991-09-12 US US08/030,109 patent/US5301762A/en not_active Expired - Fee Related
- 1991-09-12 WO PCT/FR1991/000720 patent/WO1992005335A1/fr active IP Right Grant
- 1991-09-12 EP EP91916192A patent/EP0548163B1/fr not_active Expired - Lifetime
- 1991-09-12 ES ES91916192T patent/ES2053336T3/es not_active Expired - Lifetime
-
1993
- 1993-03-12 NO NO930907A patent/NO930907D0/no unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9205335A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0548163B1 (fr) | 1994-05-25 |
FR2666843A1 (fr) | 1992-03-20 |
CA2091676A1 (fr) | 1992-03-15 |
FR2666843B1 (fr) | 1992-12-24 |
DK0548163T3 (da) | 1994-08-22 |
US5301762A (en) | 1994-04-12 |
WO1992005335A1 (fr) | 1992-04-02 |
JPH06500836A (ja) | 1994-01-27 |
ES2053336T3 (es) | 1994-07-16 |
DE69102139T2 (de) | 1995-02-16 |
NO930907L (no) | 1993-03-12 |
DE69102139D1 (de) | 1994-06-30 |
NO930907D0 (no) | 1993-03-12 |
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