ATE119233T1 - DRILLING PITCH. - Google Patents
DRILLING PITCH.Info
- Publication number
- ATE119233T1 ATE119233T1 AT91310787T AT91310787T ATE119233T1 AT E119233 T1 ATE119233 T1 AT E119233T1 AT 91310787 T AT91310787 T AT 91310787T AT 91310787 T AT91310787 T AT 91310787T AT E119233 T1 ATE119233 T1 AT E119233T1
- Authority
- AT
- Austria
- Prior art keywords
- working face
- working
- crown
- elongate
- peaks
- Prior art date
Links
- 239000011159 matrix material Substances 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000002245 particle Substances 0.000 abstract 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
- E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
-
- 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
- E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
- E21B10/485—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type with inserts in form of chisels, blades or the like
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Ceramic Products (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Holo Graphy (AREA)
- Surgical Instruments (AREA)
Abstract
A rotatable crown for a rotary drill bit comprises a working end (20) which presents a working face (26) for the crown and an opposite end (12) for engagement with a drill rod, stringer or adaptor coupling. The working end (20) comprises a mass of discrete abrasive particles (29) uniformly distributed through a bonding matrix, and a plurality of elongate abrasive elements (30) so arranged in the matrix that ends (30-A) thereof are located in the working face (26). The working face (26) has a serrated profile with alternating peaks (28) and troughs (28A). The ends (30A) of the elongate elements are located in peaks (28). <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA909441 | 1990-11-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE119233T1 true ATE119233T1 (en) | 1995-03-15 |
Family
ID=25580413
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT91310787T ATE119233T1 (en) | 1990-11-23 | 1991-11-22 | DRILLING PITCH. |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0487355B1 (en) |
AT (1) | ATE119233T1 (en) |
AU (1) | AU644241B2 (en) |
CA (1) | CA2056049C (en) |
DE (1) | DE69107800T2 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9419261D0 (en) | 1994-09-23 | 1994-11-09 | De Beers Ind Diamond | Saws |
KR100414006B1 (en) * | 2001-02-20 | 2004-01-07 | 이화다이아몬드공업 주식회사 | A Machining Tip And Cutting Wheel, Grinding Wheel, Drilling Wheel Therewith |
AU2010279358A1 (en) | 2009-08-07 | 2012-03-01 | Smith International, Inc. | Functionally graded polycrystalline diamond insert |
US8857541B2 (en) | 2009-08-07 | 2014-10-14 | Smith International, Inc. | Diamond transition layer construction with improved thickness ratio |
US8758463B2 (en) | 2009-08-07 | 2014-06-24 | Smith International, Inc. | Method of forming a thermally stable diamond cutting element |
CN102648328B (en) | 2009-08-07 | 2015-02-18 | 史密斯国际有限公司 | Polycrystalline diamond material with high toughness and high wear resistance |
CA2770420C (en) | 2009-08-07 | 2017-11-28 | Smith International, Inc. | Highly wear resistant diamond insert with improved transition structure |
US9482056B2 (en) | 2011-12-30 | 2016-11-01 | Smith International, Inc. | Solid PCD cutter |
JP6182365B2 (en) * | 2013-06-17 | 2017-08-16 | 株式会社丸和技研 | Casing bit and casing pipe |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2495400A (en) * | 1946-06-03 | 1950-01-24 | Jr Edward B Williams | Core bit |
US2729427A (en) * | 1952-01-18 | 1956-01-03 | Longyear E J Co | Bit |
US2818233A (en) * | 1954-05-03 | 1957-12-31 | Jr Edward B Williams | Drill bit |
US3537538A (en) * | 1969-05-21 | 1970-11-03 | Christensen Diamond Prod Co | Impregnated diamond bit |
JPS5382601A (en) * | 1976-12-28 | 1978-07-21 | Tokiwa Kogyo Kk | Rotary grinding type excavation drill head |
US4128136A (en) * | 1977-12-09 | 1978-12-05 | Lamage Limited | Drill bit |
US4533004A (en) * | 1984-01-16 | 1985-08-06 | Cdp, Ltd. | Self sharpening drag bit for sub-surface formation drilling |
AT386558B (en) * | 1984-03-30 | 1988-09-12 | De Beers Ind Diamond | USE OF A GRINDING TOOL |
GB8907618D0 (en) * | 1989-04-05 | 1989-05-17 | Morrison Pumps Sa | Drilling |
-
1991
- 1991-11-22 DE DE69107800T patent/DE69107800T2/en not_active Expired - Fee Related
- 1991-11-22 AT AT91310787T patent/ATE119233T1/en not_active IP Right Cessation
- 1991-11-22 AU AU88076/91A patent/AU644241B2/en not_active Ceased
- 1991-11-22 EP EP91310787A patent/EP0487355B1/en not_active Expired - Lifetime
- 1991-11-22 CA CA002056049A patent/CA2056049C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE69107800D1 (en) | 1995-04-06 |
AU644241B2 (en) | 1993-12-02 |
AU8807691A (en) | 1992-05-28 |
CA2056049C (en) | 1998-02-24 |
DE69107800T2 (en) | 1995-08-03 |
EP0487355B1 (en) | 1995-03-01 |
CA2056049A1 (en) | 1992-05-24 |
EP0487355A1 (en) | 1992-05-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |