CN106703704A - Non-planar cutting tooth for improving rock breaking efficiency and diamond drill bit - Google Patents
Non-planar cutting tooth for improving rock breaking efficiency and diamond drill bit Download PDFInfo
- Publication number
- CN106703704A CN106703704A CN201611128277.8A CN201611128277A CN106703704A CN 106703704 A CN106703704 A CN 106703704A CN 201611128277 A CN201611128277 A CN 201611128277A CN 106703704 A CN106703704 A CN 106703704A
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- Prior art keywords
- ridge
- cutting
- cutting tooth
- roof type
- plane surface
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
Abstract
The invention provides a ridge-shaped non-planar cutting tooth and a diamond drill bit. The ridge-shaped non-planar cutting tooth comprises a cylindrical body, wherein a cutting ridge which transversely penetrates through the surface center line is arranged on the surface of an end of the cylindrical body; the cutting ridge is located at the highest point of the surface of an end of the cylindrical body; two ends of the cutting ridge extend to the outer edge of the surface of the end of the cylindrical body; the surface of the end of the cylindrical body is divided into two cutting inclined planes which are respectively positioned on two sides of the cutting ridge by the cutting ridge; and the heights of the cutting inclined planes are linearly decreased progressively from the cutting ridge to the outer edge of the surface of the end of the cylindrical body. The ridge-shaped non-planar cutting tooth and the diamond drill bit have high impact resistance, and are used for a stratum with high impact. The ridge-shaped non-planar cutting tooth is mounted on the drill bit, the drilling efficiency of the drill bit can be improved, and the service life of the drill bit can be prolonged.
Description
Technical field
It, on a kind of cutting tooth and drill bit, is on a kind of oil exploration drilling bit technique specifically that the present invention is
The ridge-roof type on-plane surface cutting tooth and diamond bit applied in field.
Background technology
At present, diamond bit is widely used in oil exploration drilling.This kind of drill bit is typically with tungsten carbide
Material sintering or the drill body part processed as base material using metal material and soldering are in drill bit wing cutting face
The diamond compact cutting tooth composition of front end.In drilling process, diamond compact interacts with rock, in diamond
Stress is produced around composite sheet and rock contact interface, broken rock is realized when stress exceedes rock strength.Contain gravel high is crept into
Amount is mingled with the intensity that the high stress produced when stratum or hardpan can exceed diamond compact, causes diamond compact
Damage, cause cutting face be destroyed, ultimately result in rate of penetration decline, drill bit without drilling depth the problems such as.Further, since drill bit anti-impact
The more bit change that pulled out of hole after the decline of drill bit rate of penetration caused by hitting property difference can bring high financial cost, in drilling process
Day is costly very high.Therefore, the impact resistance of drill bit is effectively improved, is to improve drilling efficiency, reduce having for drilling cost
Effect means.
The content of the invention
It is an object of the present invention to provide a kind of cutting tooth with impact resistance higher, it is installed on drill bit
The efficiency of breaking rock and service life of drill bit can be improved.
It is a further object of the present invention to provide a kind of diamond bit with efficiency of breaking rock higher and service life.
Above-mentioned purpose of the invention can be realized using following technical proposal：
The invention provides a kind of ridge-roof type on-plane surface cutting tooth, it includes cylindrical body, the end surface of cylindrical body
A cutting ridge for traversing the surface center line is provided with, cutting ridge is in the peak of the end surface of cylindrical body, cutting ridge
Two ends extend to the end surface outer rim of cylindrical body, and the end surface of cylindrical body is divided into two and is located at respectively by cutting ridge to be cut
The cutting inclined-plane of ridge both sides is cut, the height self-cutting ridge for cutting inclined-plane is linearly passed to the end surface outer rim of the cylindrical body
Subtract.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, the two ends for cutting ridge are prolonged
The end surface outer rim for extending cylindrical body forms two cutting points.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, the length of the cutting ridge
Degree and the cylindrical body equal diameters.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, cylindrical body include by
Matrix that tungsten carbide material is made and the polycrystalline diamond layer being connected to above matrix, cutting ridge are located at the upper of polycrystalline diamond layer
Surface.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, the lower surface of matrix sets
There is welding location structure.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, polycrystalline diamond layer is
The polycrystalline diamond layer of 1 μm~50 μm of average grain yardstick after sintering.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, polycrystalline diamond layer is
The polycrystalline diamond layer of 1 μm~25 μm of average grain yardstick after sintering.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, two cutting inclined-plane it
Between there is 140 ° to 175 ° of angle.
Specific embodiment of the invention, in ridge-roof type on-plane surface cutting tooth of the invention, two cutting inclined-plane it
Between with the tangent filleted corner that radius is 0 millimeter to 0.5 millimeter.
Present invention also offers a kind of diamond bit, it includes：
Drill body, is provided with the water channel of insertion vertically in it, one end of the drill body is formed with connecting portion, described
The other end of drill body is provided with multiple hydrophthalmias, and multiple hydrophthalmias are connected with the watercourse through-hole；
Multiple wings, its other end for being along the circumferential direction connected to the drill body, the side of the wing sets side by side
There are multiple cutting tooths, multiple cutting tooths include the ridge-roof type on-plane surface cutting as any one of claim 1~10
Tooth.
Specific embodiment of the invention, in diamond bit of the invention, the wing has medial surface and outer
Side, is connected with wing top surface between the medial surface and the lateral surface, multiple cutting tooths are arranged on the wing top
Face is in the outer rim of the medial surface；The wing top surface is radially outward divided into phase successively by the central shaft of the drill body
Center portion even, nose, shoulder and gauge, the center portion are set near the central shaft of the drill body, the gauge position
In the side wall of the drill body, the cutting tooth is distributed in center portion, nose, shoulder and the gauge of the wing.
Specific embodiment of the invention, in diamond bit of the invention, there also is provided on multiple wings
Multiple pair cutting tooths, after the secondary cutting tooth is arranged in multiple cutting tooths along the rotary cutting direction of the drill body
Row, multiple secondary cutting tooths include the ridge-roof type on-plane surface cutting tooth.
Specific embodiment of the invention, in diamond bit of the invention, the ridge-roof type on-plane surface cutting tooth
It is arranged on the center portion of the wing.
Specific embodiment of the invention, in diamond bit of the invention, the ridge-roof type on-plane surface cutting tooth
It is arranged on the shoulder of the wing.
Specific embodiment of the invention, in diamond bit of the invention, the ridge-roof type on-plane surface cutting tooth
With the cutting tooth along the drill body axle center radially outward direction interlaced arrangement.
The characteristics of ridge-roof type on-plane surface cutting tooth of the invention and diamond bit and advantage are：
1st, ridge-roof type on-plane surface cutting tooth of the invention, is ridge-roof type by traditional plane cylindrical type cutting tooth change in design
On-plane surface cutting tooth, can by change with cutting tooth around interact therewith rock and cutting tooth in itself stress condition come greatly
Its anti-forward impact ability and efficiency of breaking rock are improved greatly；
2nd, diamond bit of the invention, when drilling is mingled with stratum containing complexity such as gravels, by the cutting of ridge-roof type on-plane surface
Tooth is arranged in bit shoulder, can improve the shock proof ability of drill bit；Further, when high impact-resistant stratum is crept into that ridge-roof type is non-flat
Face cutting tooth is arranged in nose outside and shoulder, with the shock proof ability of the tooth for improving this region, improves bit life.When
So, when ridge-roof type on-plane surface cutting tooth can also be provided at the secondary cutting tooth position of the wing of diamond bit, to adapt to differently
The drilling demand of layer.
Brief description of the drawings
Fig. 1 is the dimensional structure diagram of ridge-roof type on-plane surface cutting tooth of the invention.
Fig. 2 is the main structure diagram of ridge-roof type on-plane surface cutting tooth of the invention.
Fig. 3 is an example structure schematic diagram of ridge-roof type on-plane surface cutting tooth of the invention.
Fig. 4 is the cross section structure diagram of the diamond bit with ridge-roof type on-plane surface cutting tooth of the invention.
Fig. 5 is the three-dimensional knot of a cloth tooth embodiment of the diamond bit with ridge-roof type on-plane surface cutting tooth of the invention
Structure schematic diagram.
Specific embodiment
Technical scheme is clearly and completely described below in conjunction with drawings and Examples, it is clear that retouched
The embodiment stated is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to the present invention
The scope of protection.
Implementation method one
Fig. 1 and Fig. 2 is referred to, standing for the ridge-roof type on-plane surface cutting tooth according to the embodiment of the invention is illustrated
Body structure and front view structure.As illustrated, the invention provides a kind of ridge-roof type on-plane surface cutting tooth, it includes cylindrical body 1,
The end surface of the cylindrical body 1 is provided with a cutting ridge 11 for traversing the surface center line, and cutting ridge 11 is the cylinder sheet
The peak of the end surface of body 1, the two ends for cutting ridge 11 extend to the end surface outer rim 13 of the cylindrical body 1, are formed
Two cutting points 131, the end surface of the cylindrical body of cutting ridge 11 both sides is cutting inclined-plane 14, cut the height on inclined-plane 14 from
Cutting ridge 11 starts gradually to successively decrease to the end surface outer rim 13 of cylindrical body 1.
Specifically, cylinder body 1 includes the matrix 15 being made up of tungsten carbide material and the glomerocryst for being connected to the top of matrix 15
Diamond layer 16, cutting ridge 11 is located at the upper surface of polycrystalline diamond layer 16, and the lower surface of matrix 15 is provided with welding location structure
151。
The particle scale that the material properties of polycrystalline diamond are main to be selected when being sintered by it determines, the glomerocryst Buddha's warrior attendant after sintering
Stone average grain yardstick is between 1 μm~50 μm.Particle scale is smaller, and the wearability of the polycrystalline diamond after sintering is higher, but
Corresponding impact resistance is then lower.In the present invention, by the wearability of the vertical car experimental test ridge-roof type on-plane surface cutting tooth
Shi Faxian, the relatively conventional plane teeth of wear resistance ratio of the ridge-roof type on-plane surface cutting tooth is relatively low, of the invention when particle scale is selected,
The particle scale of selection of small is sintered, it is preferable that average grain yardstick is 1 after the sintering of polycrystalline diamond layer of the invention 16
μm~25 μm between.
Further, cutting ridge 11 is located at the peak of the end surface of the cylindrical body, cuts the two ends of ridge 11 (outward
End) extend to the upper surface outer rim 13 of polycrystalline diamond layer 16.Watched from the top of polycrystalline diamond layer 16, cutting ridge 11 is in
The pattern of " one " type, and the upper surface of polycrystalline diamond layer 16 is divided into two faces by cutting ridge 11, i.e., two are cut inclined-planes 14,
Positioned at the upper surface of polycrystalline diamond layer 16 of cutting ridge 11 both sides.Cutting inclined-plane 14 from the middle part of cylindrical body 1 radially outward to
Under be obliquely installed, in other words, cut the height on inclined-plane 14 from outside the cutting end surface of the ridge 11 to the cylindrical body 1
Edge linear decrease.
Diamond composite layer of the invention 16 is designed as a result of nonplanar ridge, improves diamond composite layer 16
Stress distribution when being cut relative to conventional plane diamond compact, with impact resistance higher.By impacting tired
Carry out obtaining both shock resistance indexs to compare to mark experiment on labor testing machine, by test sample composite bed by specific
Fixture is fixed on the flywheel of impact fatigue testing machine, is rotated using motor flywheel driven, is rotated a circle to nine o'clock sides often
During position, test sample be fixed on left side and there is the spring-supported impact block to carry out relative impact, rotary flyweights carry out weight always
Untill multiple impact is until test sample destroys, record the number of shocks that was experienced before destruction to evaluate the shock resistance of the sample
Fatigue behaviour.Experimental test in the event of damaged, then stops experiment at once in impact process, if impact reaches 12000 times
Sample is also damaged afterwards then also stops experiment and (in actual test, because counter has hysteresis effect with test flywheel, actually stops
The number of shocks that sample undergoes when only may be slightly higher than 12000 times).Experiment conclusion shows, four kinds of different diamond grits is burnt
It is flat with what equal diamond grit was sintered into after the cutting tooth machine-shaping formed to ridge-roof type on-plane surface cutting tooth of the invention
Face cutting tooth carries out impact fatigue contrast test and can see, and the ability of the anti-forward impact of ridge-roof type on-plane surface cutting tooth is much
Higher than conventional planar cutting tooth.
Cutting ridge 11 two ends of the invention respectively have an available cutting point 131, can will cut tooth spiral after a single use
Turn 180 ° to be re-used for repairing drill bit to another cutting point.
As shown in Fig. 2 the angle theta between two cuttings inclined-plane 14 of the invention is 140 ° to 175 °.The angle theta occurrence
Depending on can be according to actual formation demand, the ridge-roof type on-plane surface cutting tooth wear resistance ratio be tested it was found that, angle theta from laboratory
The wear resistance ratio of smaller then tooth is lower.Therefore, when for high abrasive stratum (quartz content is high in stratum), the angle theta should take
Value is larger.In one embodiment of this invention, in a high impact-resistant but the medium stratum example of abrasiveness, the angle theta takes
Be worth is 160 °；When high abrasive stratum, such as sandstone formation is used, the angle theta can be with value to 170 °~175 °.The present invention
Different angle thetas can be designed according to performance requirement, so as to optimize using effect.
As shown in figure 3, ridge-roof type on-plane surface cutting tooth of the invention, (i.e. two cuttings are oblique between two cutting inclined-planes 14
Removed in cutting ridge 11 in face 14) there can be filleted corner 17, the radius of fillet 17 is 0 to 0.5 millimeter.The fillet radius size according to
Depending on actual well drilled condition, the stock-removing efficiency of the smaller then tooth of fillet radius is higher, impact resistance relative reduction.For height
During the stratum of impact, the fillet radius answers value relative larger value.In one embodiment of this invention, in a medium punching
In hitting property but the stratum example exigent to stock-removing efficiency, the fillet radius value is 0.05mm；Using Gao Chong
During hitting property stratum, the fillet radius can be with value to 0.1 to 0.5 millimeter.The present invention can design different according to performance requirement
Fillet radius, so as to optimize using effect.
The manufacturing process of convex ridge type on-plane surface cutting tooth of the invention is as follows：
First, centreless grinding is carried out after HTHP sinter molding by traditional plane diamond compact, is reached
After designing the external diameter requirement for needing, then on diamond disk sanding and polishing diamond compact top layer to conventional planar, so
Top bevel on diamond composite layer surface as required for electrical discharge machining afterwards, the technique is without required diamond inclined-plane
The one-shot forming in sintering process.
Electrical discharge machining be it is a kind of using spark discharge when the corrosion phenomenon that produces method that dimensioned is carried out to material.
Electrical discharge machining is in relatively low voltage range, to be sparked in liquid medium.Electric spark is a kind of self-excited discharge,
Its feature is as follows：Have voltage higher before electric discharge between two electrodes of spark discharge, when two electrodes are close, medium quilt therebetween
After puncturing, flashing electric discharge immediately.With breakdown process, two interelectrode resistance drastically diminish, the voltage between the two poles of the earth
Drastically step-down therewith.Flame path must in time extinguish after the time of short duration is maintained, and can just keep " the cold pole " of spark discharge
The heat energy of characteristic, i.e. channel energy conversion has little time to reach electrode depth, channel energy is acted on very low range.Channel energy
Effect, electrode can be made locally to be corroded.When with electrical discharge machining diamond compact, because diamond compact is sintered
In journey remain catalyst metals cobalt element it is conductive, can as electrode by spark discharge so as to process.
Be can be avoided because of the diamond shrinkage factor that cannot be accurately controlled in sintering process using electrical discharge machining
Caused accuracy of manufacture error problem.Spark technology more can effectively control machining accuracy, and reduce right in process
The damage of diamond layer.There is the convex lophodont being molded through electrical discharge machining machining accuracy high, low cost, surface diamond layer to damage
The features such as hindering small.When the convex ridge type on-plane surface cutting tooth is fabricated, by the diamond composite layer of prefabricated plane, then
Precision Machining is carried out by spark technology so that overall processing cost is reduced and can meet requirement on machining accuracy, and right
The surface damage of diamond composite layer is minimum, without separately developing diamond composite layer sintering chamber general assembly, with preferably flexibly
Property and low cost.
Ridge-roof type on-plane surface cutting tooth of the invention, is that ridge-roof type is non-by traditional plane cylindrical type cutting tooth change in design
Flush cut tooth, is greatly improved the anti-forward impact ability and efficiency of breaking rock of cutting tooth.
Implementation method two
Fig. 4 is the schematic cross-sectional view of the diamond bit with ridge-roof type on-plane surface cutting tooth of the invention.
Fig. 5 is the stereogram of a cloth tooth embodiment of the diamond bit with ridge-roof type on-plane surface cutting tooth of the invention
As shown in figure 4, the present invention also provides a kind of diamond bit, it includes drill body 3 and multiple wings 4, wherein：
The water channel 31 of insertion vertically is provided with drill body 3, one end of the drill body 3 is formed with connecting portion 32, the drill bit
The other end of body 3 is provided with multiple hydrophthalmias 33, and multiple hydrophthalmias 33 are connected with the water channel 31；Multiple wings 4 are circumferentially
Direction is connected to the other end of the drill body 3, and the side of the wing 4 is provided with multiple cutting tooths 5 side by side, is cut described in multiple
Cutting tooth 5 includes the ridge-roof type on-plane surface cutting tooth 10 as described in implementation method one.
Specifically, drill body 3 is substantially in cylinder barrel shaped, and the connecting portion 32 with thread segment that its one end is formed is used to connect
Drill string is connect, diamond bit is imparted power to by drill string.The middle part of drill body 3 has water channel 31, and the water channel 31 is connected
Connecting portion 32, the other end of drill body 3 offers multiple hydrophthalmias 32, and those hydrophthalmias 32 are connected with heart shaft through-hole 31.
Multiple wings 4 are connected to one end that drill body 3 is provided with multiple hydrophthalmias 32, and in the present invention, the wing 4 has interior
Side 41 and lateral surface 42, are connected with wing top surface 43 between medial surface 41 and lateral surface 42, multiple cutting tooths 5 are arranged on wing
Top surface 43 is in the outer rim of medial surface 42.Further, wing top surface 43 is radially outward divided into by the central shaft of drill body 3
Center portion 431, nose 432, shoulder 433 and the gauge 434 being sequentially connected, center portion 431 set near the central shaft of drill body 3
Put, gauge 434 is located at the side wall of drill body 3, cutting tooth 5 be distributed in the center portion 431 of wing 4, nose 432, shoulder 433 and
Gauge 434.
Wherein, in one embodiment, the ridge-roof type on-plane surface cutting tooth 10 can be along the axle center of drill body 3 with cutting tooth 5
Radially outward direction interlaced arrangement.That is, the multiple cutting tooths 10 set in the outer rim of medial surface 42 in wing top surface 43
In, a conventional plane cutting tooth 5 is set between convex ridge type on-plane surface cutting tooth 10 two-by-two.
As shown in figure 5, in another embodiment, ridge-roof type on-plane surface cutting tooth may be provided at the shoulder 433 of wing 4.
When drilling is mingled with stratum containing gravel etc., bit shoulder tooth is due to there is linear velocity and cutting power higher so that it is in drill bit
It is easier to be subject to forward impact power in downhole vibration, causes diamond compact to damage and reduce rate of penetration, influences drilling depth.
In this case, ridge-roof type on-plane surface cutting tooth is arranged in bit shoulder 433, thus improve the shock proof ability of drill bit and
Efficiency of breaking rock.
Certainly, in other examples, the cutting tooth on diamond bit can also be cut using ridge-roof type on-plane surface entirely
Tooth cloth tooth scheme.Using the diamond drill machine head height of the drill bit cost compared with Fig. 5 of full tooth convex ridge type on-plane surface cutting tooth.
In addition, drill bit shoulder tooth in drilling process has been typically subjected to highest cutting power.On drilling high impact-resistant ground
Layer when and because the cutting linear velocity of bit shoulder tooth is very high, be subjected to from circumference to impulsive force so as to cause to collapse
Tooth.Therefore when such stratum is crept into, it should which ridge-roof type on-plane surface cutting tooth is arranged in into the outside of nose 432 and shoulder 433,
With the shock proof ability of the tooth for improving this region, bit life is improved.
In another embodiment of the invention, multiple pair cutting tooths are there also is provided on multiple wings 4, the secondary cutting tooth is along brill
The rotary cutting direction of head body 3 is arranged in the heel row of multiple cutting tooths 5, and multiple pair cutting tooths are cut including ridge-roof type on-plane surface
Tooth 10.Specifically, the ridge-roof type on-plane surface cutting tooth 10 can also be provided at the wing top surface 43 of wing shoulder 433, Ye Jishang
State at the position of secondary cutting tooth.Ridge-roof type on-plane surface cutting tooth 10 is arranged in (the i.e. wing of wing top surface 43 of wing shoulder 433
4 secondary cutting tooth) position when, be by its " insertion " each wing 4 by brazing mode.
Diamond bit of the invention, ridge-roof type on-plane surface cutting tooth is arranged in the center portion of the wing 4 of diamond bit
431st, nose 432 and shoulder 433, to adapt to Different Strata drilling demand.
Several embodiments of the present invention are the foregoing is only, those skilled in the art is according to application documents disclosure
Various changes or modification can be carried out to the embodiment of the present invention without departing from the spirit and scope of the present invention.
Claims (16)
1. a kind of ridge-roof type on-plane surface cutting tooth, it is characterised in that it includes cylindrical body, and the end surface of cylindrical body is provided with
One cutting ridge for traversing the surface center line, cutting ridge is in the peak of the end surface of cylindrical body, cuts the two ends of ridge
The end surface outer rim of cylindrical body is extended to, the end surface of cylindrical body is divided into two and is located at cutting ridge respectively by cutting ridge
The cutting inclined-plane of both sides, cuts the height self-cutting ridge on inclined-plane to the end surface outer rim linear decrease of the cylindrical body.
2. ridge-roof type on-plane surface cutting tooth according to claim 1, it is characterised in that the two ends of cutting ridge extend to cylinder
The end surface outer rim of body forms two cutting points.
3. ridge-roof type on-plane surface cutting tooth according to claim 1, it is characterised in that cylindrical body is included by tungsten carbide material
The material matrix being made and the polycrystalline diamond layer being connected to above matrix, cutting ridge are located at the upper surface of polycrystalline diamond layer.
4. ridge-roof type on-plane surface cutting tooth according to claim 3, it is characterised in that it is fixed that the lower surface of matrix is provided with welding
Bit architecture.
5. ridge-roof type on-plane surface cutting tooth according to claim 3, it is characterised in that polycrystalline diamond layer is put down after sintering
The polycrystalline diamond layer of equal 1 μm~50 μm of particle scale.
6. ridge-roof type on-plane surface cutting tooth according to claim 5, it is characterised in that polycrystalline diamond layer is put down after sintering
The polycrystalline diamond layer of equal 1 μm~25 μm of particle scale.
7. ridge-roof type on-plane surface cutting tooth according to claim 1, it is characterised in that have between two cutting inclined-planes
140 ° to 175 ° of angle.
8. ridge-roof type on-plane surface cutting tooth according to claim 7, it is characterised in that between described two cutting inclined-planes
Angle is 160 ° or 170 °~175 °.
9. ridge-roof type on-plane surface cutting tooth according to claim 1, it is characterised in that have half between two cutting inclined-planes
Footpath is 0 millimeter to 0.5 millimeter of tangent filleted corner.
10. ridge-roof type on-plane surface cutting tooth according to claim 9, it is characterised in that tangent between two cutting inclined-planes
Fillet radius be 0.05 millimeter or to 0.1 to 0.5 millimeter.
11. a kind of diamond bits, it is characterised in that it includes：
Drill body, is provided with the water channel of insertion vertically in it, one end of the drill body is formed with connecting portion, the drill bit
The other end of body is provided with multiple hydrophthalmias, and multiple hydrophthalmias are connected with the watercourse through-hole；
Multiple wings, its other end for being along the circumferential direction connected to the drill body, the side of the wing is provided with many side by side
Individual cutting tooth, multiple cutting tooths include the ridge-roof type on-plane surface cutting tooth as any one of claim 1~10.
12. diamond bits as claimed in claim 11, it is characterised in that the wing has medial surface and lateral surface, institute
State and wing top surface is connected between medial surface and the lateral surface, multiple cutting tooths are arranged on the wing top surface near institute
State in the outer rim of medial surface；The wing top surface is radially outward divided into the heart being sequentially connected by the central shaft of the drill body
Portion, nose, shoulder and gauge, the center portion are set near the central shaft of the drill body, and the gauge is located at described
The side wall of drill body, the cutting tooth is distributed in center portion, nose, shoulder and the gauge of the wing.
13. diamond bit as described in claim 11 or 12, it is characterised in that there also is provided multiple on multiple wings
Secondary cutting tooth, the secondary cutting tooth is arranged in the heel row of multiple cutting tooths along the rotary cutting direction of the drill body,
Multiple secondary cutting tooths include the ridge-roof type on-plane surface cutting tooth.
14. diamond bits as claimed in claim 12, it is characterised in that the ridge-roof type on-plane surface cutting tooth is arranged on institute
State the center portion of wing.
15. diamond bits as claimed in claim 12, it is characterised in that the ridge-roof type on-plane surface cutting tooth is arranged on institute
State the shoulder of wing.
16. diamond bits as claimed in claim 11, it is characterised in that the ridge-roof type on-plane surface cutting tooth is cut with described
Cut axle center radially outward direction interlaced arrangement of the tooth along the drill body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128277.8A CN106703704A (en) | 2016-12-09 | 2016-12-09 | Non-planar cutting tooth for improving rock breaking efficiency and diamond drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611128277.8A CN106703704A (en) | 2016-12-09 | 2016-12-09 | Non-planar cutting tooth for improving rock breaking efficiency and diamond drill bit |
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| CN106703704A true CN106703704A (en) | 2017-05-24 |
Family
ID=58936656
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| CN201611128277.8A Pending CN106703704A (en) | 2016-12-09 | 2016-12-09 | Non-planar cutting tooth for improving rock breaking efficiency and diamond drill bit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487865A (en) * | 2018-05-25 | 2018-09-04 | 中石化江钻石油机械有限公司 | A kind of ansa shape cutting tooth |
| CN109505522A (en) * | 2017-09-05 | 2019-03-22 | 史密斯国际有限公司 | Cutting element with non-planar surfaces and the tool in conjunction with the cutting element |
| WO2019075917A1 (en) * | 2017-10-16 | 2019-04-25 | 河南四方达超硬材料股份有限公司 | Multi-functional non-planar polycrystalline diamond composite for oil and gas drilling |
| CN112983286A (en) * | 2019-12-12 | 2021-06-18 | 中国石油天然气股份有限公司 | Cutting tooth and drill bit with same |
| CN113187403A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | Diamond bit with slidingtype self-adaptation buffer structure |
| CN113738284A (en) * | 2020-05-27 | 2021-12-03 | 中国石油天然气股份有限公司 | Cutting tooth and drill bit with same |
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| CN109505522A (en) * | 2017-09-05 | 2019-03-22 | 史密斯国际有限公司 | Cutting element with non-planar surfaces and the tool in conjunction with the cutting element |
| US11098532B2 (en) | 2017-09-05 | 2021-08-24 | Schlumberger Technology Corporation | Cutting elements having non-planar surfaces and tools incorporating the same |
| CN109505522B (en) * | 2017-09-05 | 2022-05-31 | 史密斯国际有限公司 | Cutting elements having non-planar surfaces and tools incorporating the same |
| US11795764B2 (en) | 2017-09-05 | 2023-10-24 | Schlumberger Technology Corporation | Cutting elements having non-planar surfaces and tools incorporating the same |
| WO2019075917A1 (en) * | 2017-10-16 | 2019-04-25 | 河南四方达超硬材料股份有限公司 | Multi-functional non-planar polycrystalline diamond composite for oil and gas drilling |
| CN108487865A (en) * | 2018-05-25 | 2018-09-04 | 中石化江钻石油机械有限公司 | A kind of ansa shape cutting tooth |
| CN112983286A (en) * | 2019-12-12 | 2021-06-18 | 中国石油天然气股份有限公司 | Cutting tooth and drill bit with same |
| CN112983286B (en) * | 2019-12-12 | 2023-09-26 | 中国石油天然气股份有限公司 | Cutting tooth and drill bit with same |
| CN113738284A (en) * | 2020-05-27 | 2021-12-03 | 中国石油天然气股份有限公司 | Cutting tooth and drill bit with same |
| CN113187403A (en) * | 2021-04-30 | 2021-07-30 | 西南石油大学 | Diamond bit with slidingtype self-adaptation buffer structure |
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