EP0350045A2 - Trépan avec éléments de coupe composites - Google Patents
Trépan avec éléments de coupe composites Download PDFInfo
- Publication number
- EP0350045A2 EP0350045A2 EP89112388A EP89112388A EP0350045A2 EP 0350045 A2 EP0350045 A2 EP 0350045A2 EP 89112388 A EP89112388 A EP 89112388A EP 89112388 A EP89112388 A EP 89112388A EP 0350045 A2 EP0350045 A2 EP 0350045A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cutting
- segments
- face
- drill bit
- cutting member
- 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
- 239000002131 composite material Substances 0.000 title description 2
- 239000010432 diamond Substances 0.000 claims abstract description 20
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 235000015076 Shorea robusta Nutrition 0.000 description 1
- 244000166071 Shorea robusta Species 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001513 hot isostatic pressing Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 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
- 239000002344 surface layer Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
Images
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
- E21B10/5676—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts having a cutting face with different segments, e.g. mosaic-type inserts
Definitions
- the present invention relates generally to drill bits, and, more specifically, relates to drill bits having improved cutter configurations.
- Drill bits presently known to the industry which utilize stationary cutting members typically use either natural or synthetic diamonds as cutting elements, and are conventionally known as “diamond bits”. References herein to "diamond bits” or “diamond drill bits” refer to all bits, for either drilling or coring, having primarily stationary cutting members.
- Conventional diamond drill bits may have a variety of different types of cutting surfaces, such as, for example polycrystalline diamond compact (PDC) cutters, thermally stable diamond product (TSP) cutters, mosaic-type cutters and diamond impregnated stud cutters.
- Mosaic cutters are typically formed of a plurality of geometrically-shaped thermally stable diamond elements cooperatively arranged and bonded in a desired shape, to form a unitary cutting surface.
- the diamond cutting surface is typically bonded to a supporting member, which is then secured to a carrier member which facilitates attachment to the drill bit.
- the cutting surface layer is preferably connected to the supporting member such as through use of brazing or sintering.
- the supporting member and the carrier member will both be formed of a suitable hard or sintered metal, such as, for example, tungsten carbide.
- the supporting member can be soldered or otherwise connected, such as by form sintering or hot isostatic pressing, to the carrier member.
- drill bits may include more than one type of cutting member on a single bit.
- Some types of cutting surfaces are better adapted to cut specific formations than are others. For example, while large PDC-type cutters are extremely efficient at cutting shales and other similarly soft formations, they are quickly broken or abraded in hard formations. Other cutting surfaces, however, such as mosaic surfaces, will cut through the harder formations satisfactorily. Accordingly, some relatively recent diamond drill bit designs have included dual sets of cutting members, with each set composed of cutting members having different types of cutting surfaces.
- bits of that type for example, a first set of cutters is arranged on the bit to provide essentially full face coverage across the face of the bit, and a second set of cutters, of a different type, is arranged to provide coverage across at least a portion of the bit face.
- An example of a bit of this type is disclosed in U.S. Patent applications serial no. 173,943 filed March 28, 1988, in the names of Mark Jones and Mark Clench, and assigned to the assignee of the present invention.
- bits with dual cutter sets while performing exceptionally well in some applications, may not be feasible for use with all types of bits.
- bits having cutting members with large cutting surfaces, such as one inch or greater in diameter it may not be feasible to include two sets of cutters on a single bit.
- the extra surface area could interfere with chip removal, or could raise the total bottom hole surface area contacting the formation to a level which would require an unacceptably high weight-on-bit to cut the formation.
- the present invention provides a new method and apparatus for including composite cutting surfaces on a single drill bit, whereby the exposed face of the cutting member may be maintained at a desired size, but whereby that face can be composed of different cutting surfaces adapted to perform differently in the earth formations.
- Drill bits in accordance with the present invention include at least some cutting members which include cutting faces with multiple segments of cutting materials.
- Each cutting member in accordance with the present invention will include at least two segments, which are formed of at least two materials.
- the cutting material segments will have exposed faces which cooperatively form the cutting face of the cutting member.
- the segment faces will preferably lie in generally parallel planes, and most preferably will be generally coplanar.
- Drill bit 10 includes a body section 12 which carries a plurality of cutting members 16.
- Body 12 is preferably a molded component fabricated through conventional metal matrix infiltration technology.
- Body section 12 is coupled to a shank 18 which includes a threaded portion 20.
- Shank 18 and body 12 are preferably formed to be functionally integral with one another.
- Drill bit 10 includes an internal recess (not illustrated), through which hydraulic fluid will flow.
- a plurality of nozzles 22 are placed in body 12 to distribute hydraulic flow proximate the faces of cutting members 16.
- the cutting face 24 of cutting member 16 includes two segments, 26 and 28.
- Cutting face segments 26 and 28 will each be formed of a layer of a cutting material, but will be formed of different types of cutting material.
- segment 26 may be a PDC cutting layer
- segment 28 may be a TSP cutting layer.
- Cutting face 24 of cutting member 16 may be formed of segments arranged in any of a variety of conformities, and such face segments may be formed of any of a variety suitable materials.
- Figures 3A-F therein are depicted exemplary alternative configurations and constructions for the cutting face of a cutting member 16 as depicted in Figures 1 and 2.
- Figure 3A depicts a cutting face 30 having a PDC face segment 32 and a mosaic face segment 34. The two segments 32 and 34 are symmetrically arranged relative to a vertical axis.
- Figure 3B depicts a face segment 36 having three generally vertically extending faces 38, 40 and 42, symmetrically arranged about a central vertical diameter.
- outer face segments 38 and 42 are of a first type of cutting surface, while central face segment 40 is of a second type of cutting surface.
- Figure 3C depicts a cutting face 44, which is similar in construction to cutting face 36 of Figure 3B, with the exception that the face segments 46, 48 and 50 are symmetrically disposed about a nonvertical diameter.
- Figure 3D depicts a two segment cutting face 52, with face segments distributed on either side of a horizontal diameter.
- upper segment 54 may be of a material such as a PDC layer
- lower segment 56 may be of a different material, such as a TSP or mosaic material.
- Figure 3E depicts an exemplary embodiment where the cutting face 58 is divided into a plurality of quadrant face segments 60, 62, 64 and 66.
- These face segments 60, 62, 64 and 66 can be formed, for example, of two alternating cutting layer materials or could all be formed of different cutting layer materials.
- Figure 3F depicts an embodiment similar to that of Figures 3B and 3C, with the exception that the three face segments of cutting face 68 are disposed symmetrically relative to a horizontal diametrical axis.
- the multiple material cutting face segments may be formed of virtually any appropriate material, and may be arranged in a variety of patterns in addition to those described and depicted herein. Accordingly, the techniques and structures described and illustrated herein are exemplary only and are not to be considered as limitations on the scope of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US21549988A | 1988-07-06 | 1988-07-06 | |
US215499 | 1988-07-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0350045A2 true EP0350045A2 (fr) | 1990-01-10 |
EP0350045A3 EP0350045A3 (en) | 1990-06-06 |
EP0350045B1 EP0350045B1 (fr) | 1996-01-17 |
Family
ID=22803218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890112388 Expired - Lifetime EP0350045B1 (fr) | 1988-07-06 | 1989-07-06 | Trépan avec éléments de coupe composites |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0350045B1 (fr) |
CA (1) | CA1311745C (fr) |
DE (1) | DE68925439T2 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0554568A2 (fr) * | 1992-01-06 | 1993-08-11 | Baker Hughes Incorporated | Taillant mosaique du trépan "drag-bit" avec un profil d'usure inégal |
EP0582484A1 (fr) * | 1992-08-06 | 1994-02-09 | De Beers Industrial Diamond Division (Proprietary) Limited | Elément rapporté pour outil |
WO2000036264A1 (fr) * | 1998-12-15 | 2000-06-22 | De Beers Industrial Diamond Division (Proprietary) Limited | Element d'outil |
GB2353810A (en) * | 1999-09-03 | 2001-03-07 | Camco Internat | Polycrystalline diamond insert including carbonate as a sintering binder catalyst |
EP2844819A1 (fr) * | 2012-05-01 | 2015-03-11 | Baker Hughes Incorporated | Outils de forage de terre ayant des éléments de coupe avec des faces de coupe présentant de multiples coefficients de frottement, et procédés associés |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4498549A (en) * | 1981-03-21 | 1985-02-12 | Norton Christensen, Inc. | Cutting member for rotary drill bit |
EP0157278A2 (fr) * | 1984-03-26 | 1985-10-09 | Eastman Christensen Company | Elément de coupe à plusieurs composants comportant des disques de diamant polycristallin |
EP0246789A2 (fr) * | 1986-05-16 | 1987-11-25 | Nl Petroleum Products Limited | Elément de coupe pour un trépan rotatif, trépan rotatif avec un tel élément, et procédé de fabrication de cet élément |
-
1989
- 1989-07-06 EP EP19890112388 patent/EP0350045B1/fr not_active Expired - Lifetime
- 1989-07-06 CA CA000604897A patent/CA1311745C/fr not_active Expired - Lifetime
- 1989-07-06 DE DE1989625439 patent/DE68925439T2/de not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4498549A (en) * | 1981-03-21 | 1985-02-12 | Norton Christensen, Inc. | Cutting member for rotary drill bit |
EP0157278A2 (fr) * | 1984-03-26 | 1985-10-09 | Eastman Christensen Company | Elément de coupe à plusieurs composants comportant des disques de diamant polycristallin |
EP0246789A2 (fr) * | 1986-05-16 | 1987-11-25 | Nl Petroleum Products Limited | Elément de coupe pour un trépan rotatif, trépan rotatif avec un tel élément, et procédé de fabrication de cet élément |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0554568A2 (fr) * | 1992-01-06 | 1993-08-11 | Baker Hughes Incorporated | Taillant mosaique du trépan "drag-bit" avec un profil d'usure inégal |
EP0554568A3 (en) * | 1992-01-06 | 1993-12-01 | Baker Hughes Inc | Mosaic diamond drag bit cutter having a nonuniform wear pattern |
EP0582484A1 (fr) * | 1992-08-06 | 1994-02-09 | De Beers Industrial Diamond Division (Proprietary) Limited | Elément rapporté pour outil |
WO2000036264A1 (fr) * | 1998-12-15 | 2000-06-22 | De Beers Industrial Diamond Division (Proprietary) Limited | Element d'outil |
GB2353810A (en) * | 1999-09-03 | 2001-03-07 | Camco Internat | Polycrystalline diamond insert including carbonate as a sintering binder catalyst |
US6248447B1 (en) | 1999-09-03 | 2001-06-19 | Camco International (Uk) Limited | Cutting elements and methods of manufacture thereof |
GB2353810B (en) * | 1999-09-03 | 2003-10-08 | Camco Internat | Cutting elements and methods of manufacture thereof |
EP2844819A1 (fr) * | 2012-05-01 | 2015-03-11 | Baker Hughes Incorporated | Outils de forage de terre ayant des éléments de coupe avec des faces de coupe présentant de multiples coefficients de frottement, et procédés associés |
EP2844819A4 (fr) * | 2012-05-01 | 2016-03-30 | Baker Hughes Inc | Outils de forage de terre ayant des éléments de coupe avec des faces de coupe présentant de multiples coefficients de frottement, et procédés associés |
Also Published As
Publication number | Publication date |
---|---|
DE68925439D1 (de) | 1996-02-29 |
CA1311745C (fr) | 1992-12-22 |
DE68925439T2 (de) | 1996-08-22 |
EP0350045A3 (en) | 1990-06-06 |
EP0350045B1 (fr) | 1996-01-17 |
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US5685769A (en) | Tool component |
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