CN209539271U - A kind of ansa shape cutting tooth - Google Patents
A kind of ansa shape cutting tooth Download PDFInfo
- Publication number
- CN209539271U CN209539271U CN201920071713.5U CN201920071713U CN209539271U CN 209539271 U CN209539271 U CN 209539271U CN 201920071713 U CN201920071713 U CN 201920071713U CN 209539271 U CN209539271 U CN 209539271U
- Authority
- CN
- China
- Prior art keywords
- crown
- convex ridge
- rib
- ansa
- shape cutting
- 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.)
- Active
Links
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a kind of ansa shape cutting tooths, it include tooth post and the crown that tooth post upper end is set, it is characterized in that the crown is converged by oblique before at least three transition upwardly, in approximate pyramid, it is formed at least three ribs or convex ridge to raise upward, the rib or convex ridge upper end is intersected at the top of crown, lower end to crown neighboring, at crown edge, the two sides of at least one rib or convex ridge are correspondingly arranged two inclined wedge surfaces, two inclined wedge surfaces and two transition faces are crossed to form two inclines, the front end of two inclines is intersected in the two sides of rib or convex ridge lower edge, form ansa shape cutting edge.The utility model can effectively wedge stratum by the way that more rib ansa shape cutting edges, ansa position is arranged, and be released effectively reservoir stress, improve efficiency of breaking rock；Ansa position to tooth top plane can effectively disperse cutting tooth meeting with stresses in broken rock, improve cutting tooth shock resistance；The ability of the abrasive resistant of drill bit can be improved in the utility model, extends the service life of drill bit.
Description
Technical field
The utility model relates to a kind of ansa shape cutting tooths, are applied to oil and natural gas drilling technology field.
Background technique
In the exploration and development of oil and natural gas resource in recent years, deep drilling and ultradeep well become raising oil gas money
The main force of source exploitation can usually encounter hard formation and interlayer stratum, and as well depth increases in such oil/gas drilling,
Drilling cost is higher and higher, therefore improves the bit speed of hard formation and interlayer stratum, becomes to shorten drilling period and reduce and bore
The important channel of well cost and method.Currently, having become the behavioral standard of oil drilling industry using PDC drill bit drilling well；However,
In drilling practice, underground working is complicated, and it is main failure mode and material and the difficult point that structure is captured that PDC drill bit, which collapses tooth,；
And live more bit change will increase, the tripping operation time, will increase drilling cost.
Although conventional knuckle-tooth drill bit has certain impact resistance, its speed-increasing effect in existing PDC drill bit
It is limited, and can only often increase bit pressure to improve rate of penetration, but this mode can accelerate the abrasion of drill bit and drill bit to become
Blunt speed will increase the quantity using drill bit；Therefore it has been proposed that pointed tooth improves the energy on the wedging stratum of drill bit
Power, and then the efficiency of breaking rock of drill bit is improved, but although pointed tooth is improved the ability on wedging stratum, but its structure is not as good as circle
Tooth is anti-collapse with it is wear-resisting.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of point in view of the deficiency of the prior art
Ridged cutting tooth, not only efficiency of breaking rock is high for it, but also shock resistance is strong, long service life.
The utility model be solves the problems, such as it is set forth above used by technical solution are as follows: include tooth post and setting in tooth
The crown of column upper end, it is characterised in that the crown is converged by oblique before at least three transition upwardly, is in approximate rib
Taper is formed at least three ribs or convex ridge to raise upward, and the rib or convex ridge upper end are intersected at the top of crown, and lower end is extremely
Crown neighboring, at crown edge, the two sides of at least one rib or convex ridge are correspondingly arranged two inclined wedge surfaces, two inclined wedge surfaces with
Two transition faces are crossed to form two inclines, and the front end of two inclines is intersected in the two sides of rib or convex ridge lower edge, form point
Ridged cutting edge.
According to the above scheme, the transition face is 3 ~ 4, and 3 ~ 4 three transition faces are identical or different face.
According to the above scheme, the transition face is 3 or 4 flat incline planes, concave surface or convex surface, and the rib or convex ridge of formation are straight
The rib or convex ridge of line style.
It according to the above scheme, is triangle at the top of the crown, three sides of a triangle are adjacent with three transition faces respectively
It connects, three angles of triangle are mutually connected with three ribs or convex ridge respectively.
It according to the above scheme, is quadrangle at the top of the crown, the four edges of quadrangle are adjacent with four transition faces respectively
It connects, four angles of quadrangle are mutually connected with four ribs or convex ridge respectively.
According to the above scheme, the angle that the rib or convex ridge and tooth post axis are formed is 45~87 °.
According to the above scheme, the angle of the inclined wedge surface and tooth post axis is 0~75 °.
According to the above scheme, the incline on crown bottom surface vertical projecting line and rib or convex ridge on crown bottom surface
It is 30~75 ° that vertical projecting line, which is formed by angle,.
According to the above scheme, the tooth post is made of hard alloy, and the crown or crown face are by polycrystalline diamond layer
It constitutes.
According to the above scheme, the convex ridge cross section is arc surface, and width is 1 ~ 5 mm.
According to the above scheme, the tooth post is cylinder；The inclined wedge surface can be plane, convex globoidal, cancave cambered surface, saw
The flank of tooth or wavy surface, two inclined wedge surfaces can be symmetrical arranged or asymmetric setting.
The utility model has the following beneficial effects: 1, by the way that more rib ansa shape cutting edges are arranged, ansa position can effective wedge
Enter stratum, be released effectively reservoir stress, improves efficiency of breaking rock；2, ansa position can effectively disperse cutting tooth to tooth top plane and exist
Meeting with stresses when broken rock improves cutting tooth shock resistance；3, pre- due to being produced when ansa shape cutter breaking rock to stratum
It is broken, stratum and landwaste are effectively cut, when boring chance hard formation and interlayer stratum, reservoir stress is released effectively, reduces drill bit
The difficulty of broken rock improves drill bit to the adaptability on stratum；3, compared with conventional circular cutting tooth and pointed cutting tooth, the utility model can
To improve the ability of the abrasive resistant of drill bit, extend the service life of drill bit.
Detailed description of the invention
Fig. 1 is the perspective view of the utility model embodiment one.
Fig. 2 is the main view of the utility model embodiment one.
Fig. 3 is the top view of the utility model embodiment one.
Fig. 4 is the perspective view of the utility model embodiment two.
Fig. 5 is the main view of the utility model embodiment three.
Fig. 6 is the main view of the utility model embodiment four.
Fig. 7 is the perspective view of the utility model embodiment four.
The perspective view of Fig. 8 the utility model embodiment five.
The perspective view of Fig. 9 the utility model embodiment six.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and examples.
Embodiment one: as shown in Figure 1, 2, 3, including cylindric tooth post 1 and the crown 9 of tooth post upper end is set, tooth post is
Hard alloy, crown or crown face are made of polycrystalline diamond layer, polycrystalline diamond layer with a thickness of 1-6mm, tooth post and crown
It is sintered into one.The crown converges from three identical transition face 3a, 3b, 3c to oblique of going forward, and is in approximate trigone
Taper is formed with three convex ridges to raise upward 2, and three convex ridge upper ends are intersected at the top of crown, outside lower end to crown
Circumferential edges 5, three transition faces are three flat incline planes, and the rib or convex ridge of formation are linear type convex ridge.The convex ridge is horizontal
Section is arc surface, and width is 3 mm.10 be plane triangle at the top of the crown, three sides of a triangle respectively with three
Transition face is adjacent, and three angles of triangle are mutually connected with three convex ridges respectively.One, crown edge, the two sides of convex ridge are corresponding
Two inclined wedge surface 4a, 4b are set, and two inclined wedge surfaces and two transition faces 3a, 3b are crossed to form two inclines 7, before two inclines
End is intersected in the two sides of convex ridge lower edge, forms ansa shape cutting edge 8, equal in convex ridge lower end and two coupled inclines
It can chamfering.The angle ω that the convex ridge and tooth post axis of the present embodiment are formed is 80 °；The inclined wedge surface of described two and tooth post axis
Angle α and β are 30 °；Two inclines are in vertical projecting line and convex ridge the hanging down on crown bottom surface on crown bottom surface
Delivering directly hachure and being formed by angle γ and θ is 42 °.Crown bottom surface is parallel with tooth post bottom surface 6.
When the present embodiment cutting tooth works, depressed compared with bradawl, crest top land contacts stratum first, since area is small, it is easy to
Stratum is wedged, precrushing formation function is played, as bit pressure increases, tooth wedging stratum is deepened, section transitions face 3a, 3b and part
Inclined wedge surface 4a, 4b contact stratum, common broken rock.Because being planar structure at the top of crown, cutting tooth can be effective against and dispersed
The stress born when work plays to resist and collapses effect.
Embodiment two: if Fig. 4 shows, embodiment two and embodiment one the difference is that: the lower end of inclined wedge surface extends to
Ontology bottom surface, i.e., two inclined wedge surfaces (4a, 4b) and the tooth post axis are formed by angle α and β is 0 °, i.e., two inclined wedge surfaces with
The centerline axis parallel of ontology.
Embodiment three: if Fig. 5 shows, embodiment three is basically the same as the first embodiment, the difference is that: transition face 3a and 3b
In asymmetry, transition face 3a is convex globoidal, and transition face 3b is cancave cambered surface, and two inclined wedge surfaces (4a, 4b) are asymmetric inclined wedge surface, inclined wedge
It is 25 ° that face 4a and the tooth post axis, which are formed by angle β, and inclined wedge surface 4b and the cylindrical body axis are formed by angle α
It is 30 °.
Example IV: as shown in Figure 6,7, example IV and embodiment three are essentially identical, the difference is that: two inclined wedges
The axis of face (4a, 4b) and the tooth post is formed by angle α and β is 0 °, i.e., the central axis of two inclined wedge surfaces and ontology is flat
Row, two inclined wedge surfaces (4a, 4b) are asymmetric inclined wedge surface, and inclined wedge surface 4a is serrated face or wavy surface, and inclined wedge surface 4b is cancave cambered surface.
Embodiment five: the axis of two as shown in Figure 8 inclined wedge surfaces (4a, 4b) and the tooth post is formed by angle α and β is equal
It is 30 °.This cutting tooth is positioned by the groove 11 being arranged in ontology bottom surface.Reference frame is positioned as installation.
Embodiment six: if Fig. 9 shows, embodiment six and embodiment five the difference is that: embodiment is sixth is that by four convex ridges
The ansa tooth of formation is quadrangle at the top of crown there are four identical transition face, the four edges of quadrangle respectively with four transition
Face is adjacent, and four angles of quadrangle are mutually connected with four convex ridges respectively.Transition face 3a and 3b are arranged symmetrically, and angle ω is 80 °,
The axis of two inclined wedge surfaces (4a, 4b) and the tooth post is formed by angle α and β is 30 °.
Claims (10)
1. a kind of ansa shape cutting tooth includes tooth post and the crown that tooth post upper end is arranged in, it is characterised in that the crown
By at least three transition upwardly before oblique converge, be in approximate pyramid, be formed at least three ribs to raise upward or
Convex ridge, the rib or convex ridge upper end are intersected at the top of crown, lower end to crown neighboring, at least one rib of crown edge
Or the two sides of convex ridge are correspondingly arranged two inclined wedge surfaces, two inclined wedge surfaces and two transition faces are crossed to form two inclines, two sides
The front end of rib is intersected in the two sides of rib or convex ridge lower edge, forms ansa shape cutting edge.
2. ansa shape cutting tooth according to claim 1, it is characterised in that the transition face is 3 ~ 4,3 ~ 4 three
Transition face is identical or different face.
3. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that the transition face is 3 or 4 flat oblique
Face, concave surface or convex surface, the rib or convex ridge of formation are linear rib or convex ridge.
4. ansa shape cutting tooth according to claim 2, it is characterised in that be triangle, triangle at the top of the crown
Three sides it is adjacent with three transition faces respectively, three angles of triangle are mutually connected with three ribs or convex ridge respectively.
5. ansa shape cutting tooth according to claim 2, it is characterised in that be quadrangle, quadrangle at the top of the crown
Four edges it is adjacent with four transition faces respectively, four angles of quadrangle are mutually connected with four ribs or convex ridge respectively.
6. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that the rib or convex ridge and tooth post axis shape
At angle be 45~87 °.
7. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that the folder of the inclined wedge surface and tooth post axis
Angle is 0~75 °.
8. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that the incline hanging down on crown bottom surface
Delivering directly hachure and being formed by angle with the vertical projecting line of rib or convex ridge on crown bottom surface is 30~75 °.
9. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that the tooth post is cylinder；Described
Inclined wedge surface is plane, convex globoidal, cancave cambered surface, serrated face or wavy surface, and two inclined wedge surfaces can be symmetrical arranged or asymmetric setting.
10. ansa shape cutting tooth according to claim 1 or 2, it is characterised in that the tooth post is made of hard alloy,
The crown or crown face is made of polycrystalline diamond layer；The convex ridge cross section is arc surface, and width is 1 ~ 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920071713.5U CN209539271U (en) | 2019-01-16 | 2019-01-16 | A kind of ansa shape cutting tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920071713.5U CN209539271U (en) | 2019-01-16 | 2019-01-16 | A kind of ansa shape cutting tooth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209539271U true CN209539271U (en) | 2019-10-25 |
Family
ID=68270015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920071713.5U Active CN209539271U (en) | 2019-01-16 | 2019-01-16 | A kind of ansa shape cutting tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209539271U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538127A (en) * | 2019-01-16 | 2019-03-29 | 中石化江钻石油机械有限公司 | A kind of ansa shape cutting tooth |
-
2019
- 2019-01-16 CN CN201920071713.5U patent/CN209539271U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538127A (en) * | 2019-01-16 | 2019-03-29 | 中石化江钻石油机械有限公司 | A kind of ansa shape cutting tooth |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108487865B (en) | Pointed ridge-shaped cutting tooth | |
| US20210277722A1 (en) | Multiple ridge diamond compact for drill bit and drill bit | |
| CA2705668C (en) | Convex crested insert with deflected wedge surfaces | |
| CN110792397B (en) | Composite drill bit | |
| CN204024480U (en) | Be applicable to the plough cut type PDC drill bit of hard formation | |
| CN211230253U (en) | Anti-balling drill bit with conical teeth | |
| CN209539271U (en) | A kind of ansa shape cutting tooth | |
| CN100359126C (en) | Cutter with convex tooth-tip | |
| CN208122763U (en) | A kind of diameter changing drilling tool | |
| CN109538127A (en) | A kind of ansa shape cutting tooth | |
| CN109681125A (en) | A kind of indent ridges diamond compact | |
| CN112922533A (en) | PDC drill bit with cutting structure and combination method | |
| CN208203135U (en) | A kind of novel sharp knuckle-tooth coring bit | |
| CN209539273U (en) | A kind of indent ridges diamond compact | |
| CN103603604B (en) | A kind of flow path groove surface has the anti-mud drum PDC drill bit of pit | |
| CN208310700U (en) | A kind of ansa shape cutting tooth | |
| CN214741114U (en) | PDC drill bit with cutting structure | |
| CN115613970A (en) | Strong attack nature PDC drill bit | |
| CN210659949U (en) | PDC drill bit is advanced to high efficiency of containing gravel complicated stratum | |
| CN213063478U (en) | Novel sharp ridge-shaped cutting tooth | |
| CN210118098U (en) | Novel tooth-shaped structure of arc-parabola-arc | |
| CN210659946U (en) | PDC drill bit capable of rapidly drilling plastic stratum | |
| CN203248081U (en) | Wide insert cone bit | |
| CN208885196U (en) | A kind of more ridge diamond compacts | |
| CN107255017A (en) | A kind of table inlays the arc-shaped gear single-cone rotary drill bit of natural diamond particles |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |