CN104153710A - Drill bit of three-inclined-plane air hammer - Google Patents
Drill bit of three-inclined-plane air hammer Download PDFInfo
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- CN104153710A CN104153710A CN201410394212.2A CN201410394212A CN104153710A CN 104153710 A CN104153710 A CN 104153710A CN 201410394212 A CN201410394212 A CN 201410394212A CN 104153710 A CN104153710 A CN 104153710A
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- plane
- drill bit
- drill
- air hammer
- drill body
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Abstract
The invention relates to a drill bit of a three-inclined-plane air hammer. The drill bit comprises a drill bit body and a plurality of spherical teeth, wherein the spherical teeth are embedded on the end face of the drill bit body. According to the drill bit of the three-inclined-plane air hammer, when the surface direction of an outer-inclined plane is the same as a drill bit axis included angle and a edge tooth dip angle of a single-inclined-plane air hammer, the edge tooth dip angle of the outer-inclined plane of the three-inclined-plane air hammer drill bit is smaller than the edge tooth dip angle of the single-inclined-plane air hammer drill bit compared with the spherical tooth dip angle of a middle-inclined plane and the spherical tooth dip angle of an inner-inclined plane, so that the three-inclined-plane structure overcomes the defect that an existing edge tooth dip angle of an existing single-inclined-plane drill bit is larger, the situation that the edge tooth work stress condition is severe is improved, possibility of edge teeth falling, edge tooth crashing and edge tooth breaking is lowered, and service life of the air hammer drill bit is improved.
Description
Technical field
The present invention relates to the hammer drilling bit using in a kind of gas drilling, relate in particular to a kind of three inclined-plane hammer drilling bits.
Background technology
Gas drilling is as the focus receiving much concern in world's oil and gas industry, and the main advantage of comparing with conventional drilling is that its rate of penetration can improve 4～8 times, and maximum is even brought up to 14 times.Gas drilling has many good qualities: improve rate of penetration, reduce drilling cost, improve wellbore quality and eliminate cuttings hold-down effect etc.
The air hammer drill bit known at present, gas drilling is used, generally adopts monocline face and central plane structure.The heel teeth (hard-metal insert of inlaying on inclined-plane) that facts have proved the hammer drilling bit that adopts this frame mode comes off, broken tooth and broken teeth serious, the ratio that the hammer drilling bit causing because of heel teeth inefficacy lost efficacy is up to 90% of hammer drilling bit inefficacy, reduced the application life of hammer drilling bit, increased the cost of gas drilling, had a strong impact on the drilling efficiency of gas drilling, the problem existing for overcoming above-mentioned monocline face hammer drilling bit, the present invention proposes a kind of three inclined-plane hammer drilling bits.
Summary of the invention
The present invention for overcome the above problems provide a kind of simple in structure, reduce heel teeth stressed, prevent heel teeth come off broken tooth broken teeth, extend three inclined-plane hammer drilling bits of drilling life of bit.
Technical scheme of the present invention is: described drill bit comprises drill body and some hemi-spherical ended shape inserts, and described some hemi-spherical ended shape inserts are embedded on drill body end face.
Described drill body consists of central plane, interior inclined-plane, middle inclined-plane, outer inclined-plane and the drill body conical surface, and described central plane is a circular flat, is arranged on drill body end face center; Described interior inclined-plane is an anchor ring, and this interior inclined-plane intersects near drill axis one side and central plane, away from drill axis one side and middle inclined-plane, intersects; Described middle inclined-plane is an anchor ring, and this inclined-plane, centre intersects near drill axis one side and interior inclined-plane, away from drill axis one side and outer inclined-plane, intersects; Described outer inclined-plane is an anchor ring, and this outer inclined-plane intersects near drill axis one side and middle inclined-plane, away from drill axis one side, extends to the drill body conical surface.
Described hemi-spherical ended shape insert is hard-metal insert ball tooth or polycrystalline diamond PDC ball tooth.
Surface normal and the drill axis angle on described outer inclined-plane, middle inclined-plane, interior inclined-plane diminish gradually.
When the incline angle of side teeth of the outer chamfered surface normal direction of the present invention and drill axis angle and monocline face hammer drilling bit is identical, the outer chamfered edge tine angle of three inclined-plane hammer drilling bits is just less than the incline angle of side teeth of monocline face hammer drilling bit with respect to the ball tine angle on He Nei inclined-plane, middle inclined-plane, three ramp structures of the present invention have like this overcome the larger problem of existing monocline face drill bit incline angle of side teeth, improved the severe problem of heel teeth work force-bearing situation, reduced that heel teeth comes off, the possibility of broken tooth and broken teeth, the application life of having improved hammer drilling bit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of drill body.
Fig. 3 be in Fig. 2 A to structural representation.
In figure, 1 is drill body, the 2nd, and outer inclined-plane, the 3rd, middle inclined-plane, the 4th, interior inclined-plane, the 5th, central plane, the 6th, hemi-spherical ended shape insert, the 7th, the drill body conical surface.
The specific embodiment
A kind of three inclined-plane hammer drilling bits, described drill bit comprises drill body 1 and some hemi-spherical ended shape inserts 6, described some hemi-spherical ended shape inserts 6 are embedded on drill body 1 end face, described drill body 1 consists of central plane 5, interior inclined-plane 4, middle inclined-plane 3, outer inclined-plane 2 and the drill body conical surface 7, described central plane 5 is a circular flat, is arranged on drill body 1 end face center; Described interior inclined-plane 4 is an anchor ring, and these interior inclined-plane 4 surface normals and drill axis angle are less, and this interior inclined-plane 4 intersects near drill axis one side and central plane 5, away from drill axis one side and middle inclined-plane 3, intersects; Described middle inclined-plane 3 is an anchor ring, and these inclined-plane, centre 3 surface normals and drill axis angle are larger than interior inclined-plane 4, and this inclined-plane, centre 3 intersects near drill axis one side and interior inclined-plane 4, crossing with outer inclined-plane 2 away from drill axis one side; Described outer inclined-plane 2 is an anchor ring, these outer inclined-plane 2 surface normals and drill axis angle are all larger than interior inclined-plane 4, middle inclined-plane 3, this outer inclined-plane 2 intersects near drill axis one side and middle inclined-plane 3, away from drill axis one side, extend to the drill body conical surface 7, surface normal and the drill axis angle on described outer inclined-plane 2, middle inclined-plane 3, interior inclined-plane 4 diminish gradually.
Described hemi-spherical ended shape insert 6 is hard-metal insert ball tooth or polycrystalline diamond PDC ball tooth.
Claims (4)
1. three inclined-plane hammer drilling bits, is characterized in that: described drill bit comprises drill body and some hemi-spherical ended shape inserts, and described some hemi-spherical ended shape inserts are embedded on drill body end face.
2. a kind of three inclined-plane hammer drilling bits according to claim 1, it is characterized in that: described drill body consists of central plane, interior inclined-plane, middle inclined-plane, outer inclined-plane and the drill body conical surface, described central plane is a circular flat, is arranged on drill body end face center; Described interior inclined-plane is an anchor ring, and this interior inclined-plane intersects near drill axis one side and central plane, away from drill axis one side and middle inclined-plane, intersects; Described middle inclined-plane is an anchor ring, and this inclined-plane, centre intersects near drill axis one side and interior inclined-plane, away from drill axis one side and outer inclined-plane, intersects; Described outer inclined-plane is an anchor ring, and this outer inclined-plane intersects near drill axis one side and middle inclined-plane, away from drill axis one side, extends to the drill body conical surface.
3. a kind of three inclined-plane hammer drilling bits according to claim 1, is characterized in that: described hemi-spherical ended shape insert is hard-metal insert ball tooth or polycrystalline diamond PDC ball tooth.
4. a kind of three inclined-plane hammer drilling bits according to claim 2, is characterized in that: surface normal and the drill axis angle on described outer inclined-plane, middle inclined-plane, interior inclined-plane diminish gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394212.2A CN104153710A (en) | 2014-08-12 | 2014-08-12 | Drill bit of three-inclined-plane air hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410394212.2A CN104153710A (en) | 2014-08-12 | 2014-08-12 | Drill bit of three-inclined-plane air hammer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104153710A true CN104153710A (en) | 2014-11-19 |
Family
ID=51879321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410394212.2A Pending CN104153710A (en) | 2014-08-12 | 2014-08-12 | Drill bit of three-inclined-plane air hammer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104153710A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309468A (en) * | 2021-06-08 | 2021-08-27 | 宜昌市五环钻机具有限责任公司 | Drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918538A (en) * | 1974-07-01 | 1975-11-11 | Hughes Tool Co | Rotary percussion earth boring bit |
| CN201598982U (en) * | 2010-03-11 | 2010-10-06 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Double-bevel air hammer drill bit |
| CN201835751U (en) * | 2010-10-18 | 2011-05-18 | 中国石油化工集团公司 | Drill bit of gauge protection air hammer |
| CN202441264U (en) * | 2012-01-17 | 2012-09-19 | 李保顺 | High-efficiency down-the-hole drill bit |
| CN204082006U (en) * | 2014-08-12 | 2015-01-07 | 江苏中油天工机械有限公司 | A kind of three inclined-plane hammer drilling bits |
-
2014
- 2014-08-12 CN CN201410394212.2A patent/CN104153710A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3918538A (en) * | 1974-07-01 | 1975-11-11 | Hughes Tool Co | Rotary percussion earth boring bit |
| CN201598982U (en) * | 2010-03-11 | 2010-10-06 | 中国石油集团川庆钻探工程有限公司钻采工艺技术研究院 | Double-bevel air hammer drill bit |
| CN201835751U (en) * | 2010-10-18 | 2011-05-18 | 中国石油化工集团公司 | Drill bit of gauge protection air hammer |
| CN202441264U (en) * | 2012-01-17 | 2012-09-19 | 李保顺 | High-efficiency down-the-hole drill bit |
| CN204082006U (en) * | 2014-08-12 | 2015-01-07 | 江苏中油天工机械有限公司 | A kind of three inclined-plane hammer drilling bits |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113309468A (en) * | 2021-06-08 | 2021-08-27 | 宜昌市五环钻机具有限责任公司 | Drill bit |
| CN113309468B (en) * | 2021-06-08 | 2024-05-17 | 湖北五环欧科制造技术有限公司 | Drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |