CN202000903U - Impregnated tooth for impregnated bit - Google Patents
Impregnated tooth for impregnated bit Download PDFInfo
- Publication number
- CN202000903U CN202000903U CN2011200348187U CN201120034818U CN202000903U CN 202000903 U CN202000903 U CN 202000903U CN 2011200348187 U CN2011200348187 U CN 2011200348187U CN 201120034818 U CN201120034818 U CN 201120034818U CN 202000903 U CN202000903 U CN 202000903U
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- China
- Prior art keywords
- tooth
- impregnated
- arc surface
- bit
- intersect
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Abstract
The utility model relates to an impregnated tooth for an impregnated bit of oil, natural gas and geology drill wells, in particular to an impregnated tooth with a multi-curve tooth crown. The impregnated tooth comprises a tooth column and a tooth crown and is characterized in that the tooth crown comprises two parallel-intersect or basically parallel-intersect convex arc surfaces. The front end of the arc surface is provided with a beveling end surface, and an included angle alpha formed by the beveling end surface and the axis of the tooth crown is 5 degrees to 35 degrees. The two parallel-intersect or basically parallel-intersect convex arc surfaces are connected through a fifth plane in smooth transition mode, curvature radiuses of the two arc surface are identical, and value of the curvature radius is 2.5-9 millimeters. The impregnated tooth for the impregnated bit can improve stability of the bit when drilling into soft and hard interlayers, contact points between the impregnated tooth and stratums are increased by one time, stratum application scope of the impregnated bit is widen, rock-broken efficiency is increased, and service lives of the tooth and the bit are prolonged.
Description
Technical field
The utility model relates to a kind of impregnated tooth that is used for oil, natural gas and geological drilling impregnated bit, is specifically related to a kind of impregnated tooth of many curved surfaces crown.
Technical background
The existing impregnated tooth that is used for impregnated bit mainly comprises tooth post and crown two parts, and the tooth post is mainly cylinder, cylindroid or triangular prism etc., and the crown part mostly is a single-curved surface, curve form is a taper seat, hemisphere face or plane etc.The impregnated bit that has above-mentioned impregnated tooth helps impregnated bit and creeps into the staggered stratum of soft or hard, but when bizet is its formation drilling of impregnated tooth on plane and the stratum contact area bigger, therefore active shear action weak effect influences the drill bit operating efficiency when creeping into soft formation; Bizet is the impregnated tooth of taper seat or sphere, though reduced the contact area on tooth and stratum, because the vertex of a cone or ball top are worn down to the plane very soon, lacks effectively initiatively cutting face, and the drill bit operating efficiency also can weaken thereupon fast.The crown tapering causes bit body to produce fire check than the wear out failure of conference quickening tooth when creeping into hard formation in addition, thus the application life of having reduced drill bit.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of impregnated tooth that is used for impregnated bit at the deficiency of above-mentioned prior art existence, stability when it not only can improve drill bit and creeps into the soft or hard interlayer, impregnated tooth and stratum contact point increase by 1 times, widen the stratum scope of application of impregnated bit, and can strengthen the efficiency of breaking rock of impregnated bit, prolong the application life of tooth and drill bit.
The utility model is that the technical scheme that problem adopted of the above-mentioned proposition of solution is:
Press such scheme, described two parallel intersect or substantially parallel crossing outer convex arc surface is seamlessly transitted continuously by plane 5, the radius of curvature of two arc surfaces equates that its span is 2.5～9mm.
Press such scheme, the axis of described two arc surfaces equates apart from tooth mast axis distance.
Press such scheme, the axis of described arc surface and tooth mast axis, it is being 90 °～80 ° through arc surface axis and the included angle B 4 that is parallel to the projection in the plane of tooth mast axis, be that the axis of arc surface and the angle of the crossing bus of tooth post are 90 °～80 °, the crown of contour or preceding high back low dip before and after forming.
Press such scheme, described cut sth. askew end face 7a with through the tooth mast axis and to be parallel to the plane of outer convex arc surface axis perpendicular.
Press such scheme, described tooth post is cylinder or oval cylinder.
Press such scheme, the forward end apex that described two the outer convex arc surface and the end face 7a that cuts sth. askew intersect and the vertical distance H1 of tooth mast axis are 1/8～3/8 of tooth column diameter.
Press such scheme, described tooth post is oval cylinder, described two parallel intersect or substantially parallel crossing outer convex arc surface is provided with along oval major semiaxis direction.
Press such scheme, described two parallel intersect or substantially parallel crossing outer convex arc surface rear end crossing with sphere 8a, sphere 8a is corresponding with the end face 7a that cuts sth. askew of arc surface front end, and the forward end apex that described sphere 8a and two arc surfaces intersect and the vertical distance H2 of tooth mast axis are 1/9～3/8 of tooth column diameter.
The beneficial effects of the utility model are: when 1, the utility model is as the face tooth of impregnated bit and gauge teeth work, two arc surface and beveled end kept man of a noblewoman are introduced into duty, the end face of cutting sth. askew is equivalent to cutting edge, when creeping into relative grinding stratum, can improve the stock-removing efficiency of tooth than soft formation; 2, the top end face of two arc surfaces is participated in cutting or grinding simultaneously, has increased the contact area on impregnated tooth and stratum, helps improving the operating efficiency of drill bit; 3, Tu Qi tooth crown has improved the cleaning and the cooling effect of tooth, has increased the cloth tooth density of drill bit, has improved cutting power, has prolonged the application life of impregnated tooth; 4, widened the scope of application of impregnated bit, the tooth crown arc surface contacts the stratum earlier with the beveled end kept man of a noblewoman during work, can play shear action on softer stratum, has improved impregnated bit at the drilling effect than hag; When creeping into hard formation or abrasive layer, wear and tear gradually in the face of cylinder, and the contact area on impregnated tooth and ground increases gradually, strengthened the grinding fragmentation of tooth to the stratum, makes the utility model applicable to creeping into stratum with dissection; 5, addendum circle cambered surface rear end is a sphere, can reduce the contact area on tooth and stratum, has strengthened the cutting ability of tooth, has further improved the cleaning effect of tooth.
Description of drawings
Fig. 1 is the stereogram of an embodiment of the utility model.
Fig. 2 is the elevation of an embodiment of the utility model.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the lateral view of Fig. 2.
Fig. 5 is the A-A partial sectional view of Fig. 2.
Fig. 6 is the stereogram of second embodiment of the utility model.
Fig. 7 is the lateral view of second embodiment of the utility model.
Fig. 8 is the oil diamond impregnated bit schematic diagram that utilizes the impregnated tooth design of the utility model.
Specific implementation method
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment 1:
Shown in Fig. 1-5, include tooth post 1 and crown 2, described tooth post is a cylinder, described crown comprises two parallel crossing outer convex arc surface, described two parallel crossing arc surfaces 3,4 are connected by plane 5 transition, the radius of curvature of two arc surfaces is all 3.4mm mutually, the radian of two arc surfaces is Л 3/5～Л 4/5, tooth axis symmetry is laid relatively, the axis of arc surface and tooth mast axis are 87 ° at the axis of crossing arc surface and the included angle B 4 that is parallel to the projection in the plane of tooth mast axis, the crown of high back low dip before forming thus.Front end at arc surface is provided with the end face 7a that cuts sth. askew, and the described end face 7a that cuts sth. askew is perpendicular with the plane of convex arc surface axis outside crossing the tooth mast axis and being parallel to, and the described angle a that cuts sth. askew end face and tooth mast axis is 15 °; The forward end apex that described two arc surfaces and the end face of cutting sth. askew intersect and the vertical distance H1 of tooth mast axis are 2/8 of tooth column diameter.
Embodiment 2:
Shown in Fig. 6-7, the main difference of it and first embodiment is that two arc surface axis and tooth mast axis are 90 ° in the included angle B 4 of crossing the arc surface axis and being parallel to the projection in the plane of tooth mast axis, contour crown before and after forming thus.Two parallel crossing outer convex arc surface rear ends and sphere 8a intersect, and sphere is corresponding with the end face 7a that cuts sth. askew of arc surface front end, and the forward end apex that sphere and two arc surfaces are crossing and the vertical distance H2 of tooth mast axis are 1/8 of tooth column diameter.Remainder is identical with a last embodiment.
When the utility model uses with its insert on the bit body 6 of diamond impregnated bit, the beveled end face of tooth is towards the rotary cutting direction of drill bit.
Claims (9)
1. impregnated tooth that is used for impregnated bit, comprise tooth post and crown, it is characterized in that described crown comprises two parallel intersecting or substantially parallel crossing outer convex arc surface, be provided with the end face of cutting sth. askew at the front end of arc surface, the described angle a that cuts sth. askew end face and tooth mast axis is 5 °～35 °.
2. by the described impregnated tooth that is used for impregnated bit of claim 1, it is characterized in that described two parallel intersect or substantially parallel crossing outer convex arc surface is seamlessly transitted continuous by the plane, the radius of curvature of two arc surfaces equates that its span is 2.5～9mm.
3. by claim 1 or the 2 described impregnated teeth that are used for impregnated bit, it is characterized in that described cut sth. askew end face with through the tooth mast axis and to be parallel to the plane of outer convex arc surface axis perpendicular.
4. by claim 1 or the 2 described impregnated teeth that are used for impregnated bit, it is characterized in that described two arc surface axis equate apart from the distance of tooth mast axis.
5. by the described impregnated tooth that is used for impregnated bit of claim 4, the axis and the tooth mast axis that it is characterized in that described arc surface, be 90 °～80 ° through arc surface axis and the included angle B 4 that is parallel to the projection in the plane of tooth mast axis, the crown of contour or preceding high back low dip before and after forming.
6. by claim 1 or the 2 described impregnated teeth that are used for impregnated bit, it is characterized in that described tooth post is cylinder or oval cylinder.
7. by the described impregnated tooth that is used for impregnated bit of claim 1, it is characterized in that the forward end apex that described two the outer convex arc surface and the end face 7a that cuts sth. askew intersect and the vertical distance H1 of tooth mast axis are 1/8～3/8 of tooth column diameter.
8. by claim 1 or the 2 described impregnated teeth that are used for impregnated bit, it is characterized in that described two parallel intersecting or substantially parallel crossing outer convex arc surface rear end and spheres intersect, sphere is corresponding with the end face of cutting sth. askew of arc surface front end, and the forward end apex that described sphere and two arc surfaces intersect and the vertical distance H2 of tooth mast axis are 1/9～3/8 of tooth column diameter.
9. by claim 1 or the 2 described impregnated teeth that are used for impregnated bit, it is characterized in that described tooth post is oval cylinder, described two parallel intersect or substantially parallel crossing outer convex arc surface is provided with along oval major semiaxis direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200348187U CN202000903U (en) | 2011-01-28 | 2011-01-28 | Impregnated tooth for impregnated bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200348187U CN202000903U (en) | 2011-01-28 | 2011-01-28 | Impregnated tooth for impregnated bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000903U true CN202000903U (en) | 2011-10-05 |
Family
ID=44703648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200348187U Expired - Fee Related CN202000903U (en) | 2011-01-28 | 2011-01-28 | Impregnated tooth for impregnated bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202000903U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763774A (en) * | 2019-03-21 | 2019-05-17 | 莱州市原野科技有限公司 | PDC drill bit and its cutting tooth |
-
2011
- 2011-01-28 CN CN2011200348187U patent/CN202000903U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763774A (en) * | 2019-03-21 | 2019-05-17 | 莱州市原野科技有限公司 | PDC drill bit and its cutting tooth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan Rui Te diamond Co., Ltd Assignor: Jianghan Petroleum Drilling Bit Co., Ltd. Contract record no.: 2014420000097 Denomination of utility model: Impregnated tooth of impregnated drill Granted publication date: 20111005 License type: Exclusive License Record date: 20140610 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20160128 |
|
| EXPY | Termination of patent right or utility model |