CA2257885A1 - Non-symmetrical stress-resistant rotary drill bit cutter element - Google Patents
Non-symmetrical stress-resistant rotary drill bit cutter elementInfo
- Publication number
- CA2257885A1 CA2257885A1 CA002257885A CA2257885A CA2257885A1 CA 2257885 A1 CA2257885 A1 CA 2257885A1 CA 002257885 A CA002257885 A CA 002257885A CA 2257885 A CA2257885 A CA 2257885A CA 2257885 A1 CA2257885 A1 CA 2257885A1
- Authority
- CA
- Canada
- Prior art keywords
- cutter element
- face
- cutter
- trailing
- leading
- 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
Abstract
A cutter element that balances maximum gage-keeping capabilities with minimal tensile stress induced damage to cutter elements is disclosed. The cutter elements (150) of the present invention have a non-symmetrical shape and may include a more aggressive cutting profile than conventional cutter elements. In one embodiment, a cutter element is configured such that the inside angle at which its leading face (114) intersects the wear face (112) is less than the inside angle at which is trailing face (118) intersects the wear face (112). This can also be accomplished by providing the cutter element (160) with a relieved wear face (162). In another embodiment of the invention, the surfaces of the present cutter element (500) are curvilinear and the transitions between the leading (514) and trailing (518) faces and the gage face are rounded or contoured. In this embodiment, the leading transition is made sharper than the trailing transition.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2019896P | 1996-06-21 | 1996-06-21 | |
US60/020,198 | 1996-06-21 | ||
US08/668,109 | 1996-06-21 | ||
US08/668,109 US5813485A (en) | 1996-06-21 | 1996-06-21 | Cutter element adapted to withstand tensile stress |
PCT/US1997/010772 WO1997048873A2 (en) | 1996-06-21 | 1997-06-20 | Non-symmetrical stress-resistant rotary drill bit cutter element |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2257885A1 true CA2257885A1 (en) | 1997-12-24 |
CA2257885C CA2257885C (en) | 2006-06-13 |
Family
ID=36587878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002257885A Expired - Fee Related CA2257885C (en) | 1996-06-21 | 1997-06-20 | Non-symmetrical stress-resistant rotary drill bit cutter element |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2257885C (en) |
-
1997
- 1997-06-20 CA CA002257885A patent/CA2257885C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2257885C (en) | 2006-06-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |
Effective date: 20160620 |