CN201835751U - Drill bit of gauge protection air hammer - Google Patents
Drill bit of gauge protection air hammer Download PDFInfo
- Publication number
- CN201835751U CN201835751U CN2010205651932U CN201020565193U CN201835751U CN 201835751 U CN201835751 U CN 201835751U CN 2010205651932 U CN2010205651932 U CN 2010205651932U CN 201020565193 U CN201020565193 U CN 201020565193U CN 201835751 U CN201835751 U CN 201835751U
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- CN
- China
- Prior art keywords
- drill bit
- teeth
- gauge protection
- air hammer
- face
- 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 - Fee Related
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Abstract
The utility model relates to a drill bit of a gauge protection air hammer, which belongs to the technical field of oil-gas drilling downhole tools. The drill bit consists of a drill bit body, bottom teeth and side teeth; the lower part of the crown part of the drill bit is a cylindrical surface, and the upper part of the crown part of the drill bit is a circular conical surface; gauge protection teeth are inlaid on the cylindrical surface of the crown part of the drill bit, and gauge protection teeth are also inlaid on the circular conical surface; when the side teeth are abraded or even fall off during drilling of the drill bit, the gauge protection teeth on the cylindrical surface can have the gauge protection function from bottom to top; along with the increased drilling depth and the abrasion of the gauge protection teeth on the cylindrical surface, spherical teeth distributed on the circular conical surface also have the gauge protection function, so as to realize double gauge protection effect; and the air hammer is more effectively ensured to drill wellbores with consistent apertures during long interval drilling, the drilling advantages of the air hammer are sufficiently given into full play and the service life of the drill bit is prolonged.
Description
Technical field:
The utility model relates to a kind of guarantor footpath air hammer drill bit, belongs to technical field of tools under the oil/gas drilling.
Background technology:
At present, the air hammer drilling technology obtains comparatively extensive use in hard and superhard stratum, low pressure leakiness stratum and high grinding stratum, become petroleum exploration domain speed-raising, hold angle, prevent one of effective means that down-hole accident takes place.Simultaneously, it is circulatory mediator that inexhaustible air has been adopted in the air hammer drilling well, can the contaminated oil gas-bearing formation.But, find by The field, creep into especially when single drill bit long well section creeps at air hammer, because the drill bit heel teeth is easy to wear, cause hole shrinkage, influence wellbore quality, even cause reaming operation in the follow-up construction.
Announce a kind of three aerofoils for the patent that to overcome the above-mentioned technological deficiency patent No. be ZL200920106110.0 and protected footpath air hammer drill bit, form by bit body, gauge teeth, heel teeth, flat tooth, three aerofoils, on the taper surface of bit body front end, evenly arranging three faces of cylinder of waiting arc, promptly three aerofoils evenly are inlaid with gauge teeth on three aerofoils.
Summary of the invention:
The purpose of this utility model is in order to overcome the drill bit heel teeth wearing and tearing that prior art exists, to cause the defective of hole shrinkage, a kind of guarantor footpath air hammer drill bit being provided.
For achieving the above object, the utility model is achieved through the following technical solutions:
The utility model is made up of bit body, end tooth, heel teeth, and the bottom of drill bit is the face of cylinder, and top is taper seat, is inlaid with gauge teeth on the face of cylinder of drill bit, inlays gauge teeth on taper seat.
The face of cylinder of drill bit air flue both sides and the cloth tooth on the face thereof are identical, and the face of cylinder between flute of drill and the cloth tooth on the face thereof are identical.
Gauge teeth is cylindrical hard-metal insert.
Gauge teeth on the taper seat and heel teeth are on the same longitudinal cross-section.
Gauge teeth is the spherical tooth of carbide alloy.
Gauge teeth 4, gauge teeth 5 outer ends are being on the face of cylinder at center with the center line of bit all.
The beneficial effects of the utility model are: even when drill bit is creeping into after heel teeth wearing and tearing are to come off, gauge teeth on the face of cylinder plays the effect of protecting the footpath from bottom to up, along with the increase of drilling depth and the wearing and tearing of cylinder gauge teeth, at this moment, the hemi-spherical ended shape insert that is distributed on the conical surface plays the footpath effect of protecting equally, dual guarantor footpath effect, and the more efficiently air hammer that guaranteed gets out the well of aperture unanimity when long well section creeps into, give full play to the advantage of air hammer drilling well, improved the application life of drill bit.
Description of drawings:
Fig. 1 is the utility model upward view.
Fig. 2 is the utility model front view.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is further described:
The utility model is made up of bit body 1, end tooth 2, heel teeth 3, and the bottom of drill bit is the face of cylinder 7, and top is taper seat 6, is inlaid with gauge teeth 4 on the face of cylinder 7 of drill bit, is inlaid with gauge teeth 5 on taper seat 6.
The face of cylinder of drill bit air flue both sides and the cloth tooth on the face thereof are identical, and the face of cylinder between flute of drill and the cloth tooth on the face thereof are identical, and gauge teeth 4 is cylindrical hard-metal insert.
Gauge teeth 5 on the taper seat 6 is on the same longitudinal cross-section with heel teeth 3, and gauge teeth 5 is the spherical tooth of carbide alloy.
Gauge teeth 4, gauge teeth 5 outer ends are being on the face of cylinder at center with the center line of bit all, even after the heel teeth wearing and tearing were to come off, gauge teeth 4 and gauge teeth 5 played the effect in dual guarantor footpath in turn.
Claims (6)
1. protect footpath air hammer drill bit for one kind, form by bit body (1), end tooth (2), heel teeth (3), it is characterized in that: the bottom of drill bit is the face of cylinder (7), top is taper seat (6), on the face of cylinder (7) of drill bit, be inlaid with gauge teeth (4), on taper seat (6), be inlaid with gauge teeth (5).
2. guarantor according to claim 1 footpath air hammer drill bit, it is characterized in that: the face of cylinder of drill bit air flue both sides and the cloth tooth on the face thereof are identical, and the face of cylinder between flute of drill and the cloth tooth on the face thereof are identical.
3. guarantor according to claim 1 and 2 footpath air hammer drill bit, it is characterized in that: gauge teeth (4) is cylindrical hard-metal insert.
4. guarantor according to claim 1 and 2 footpath air hammer drill bit, it is characterized in that: the gauge teeth (5) on the taper seat (6) is on the same longitudinal cross-section with heel teeth (3).
5. guarantor according to claim 4 footpath air hammer drill bit is characterized in that: gauge teeth (5) is the spherical tooth of carbide alloy.
6. guarantor according to claim 1 and 2 footpath air hammer drill bit, it is characterized in that: gauge teeth (4), gauge teeth (5) outer end are being on the face of cylinder at center with the center line of bit all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205651932U CN201835751U (en) | 2010-10-18 | 2010-10-18 | Drill bit of gauge protection air hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205651932U CN201835751U (en) | 2010-10-18 | 2010-10-18 | Drill bit of gauge protection air hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201835751U true CN201835751U (en) | 2011-05-18 |
Family
ID=44005857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205651932U Expired - Fee Related CN201835751U (en) | 2010-10-18 | 2010-10-18 | Drill bit of gauge protection air hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201835751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153710A (en) * | 2014-08-12 | 2014-11-19 | 江苏中油天工机械有限公司 | Drill bit of three-inclined-plane air hammer |
| CN112282657A (en) * | 2020-12-29 | 2021-01-29 | 西南石油大学 | Mixed structure gas drilling bit based on preferential rock breaking in easily-broken area |
-
2010
- 2010-10-18 CN CN2010205651932U patent/CN201835751U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153710A (en) * | 2014-08-12 | 2014-11-19 | 江苏中油天工机械有限公司 | Drill bit of three-inclined-plane air hammer |
| CN112282657A (en) * | 2020-12-29 | 2021-01-29 | 西南石油大学 | Mixed structure gas drilling bit based on preferential rock breaking in easily-broken area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20171018 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |