CN209621216U - It is a kind of that there are two the composite drill bits of recombination region - Google Patents
It is a kind of that there are two the composite drill bits of recombination region Download PDFInfo
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- CN209621216U CN209621216U CN201821195497.7U CN201821195497U CN209621216U CN 209621216 U CN209621216 U CN 209621216U CN 201821195497 U CN201821195497 U CN 201821195497U CN 209621216 U CN209621216 U CN 209621216U
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Abstract
The composite drill bit that the utility model relates to a kind of there are two recombination region.Include bit body, cutting wing is provided on bit body and nozzle, bite wing contour are divided into center portion, crown, outer cone and gauge section from the inside to the outside；The cutting center portion of wing, crown are provided with main cutting tooth at outer cone；Passive gauge tooth is provided with above the gauge section of the cutting wing；The bit body is additionally provided with bit leg between the external taper gap of cutting wing, the bit leg upper end couples integrally with bit body, the lower end of bit leg is provided with gear wheel, and gear wheel is equipped with gear wheel cutting tooth, and the bit body is additionally provided with center portion pair cutting tooth between the center portion gap of cutting wing.Solve existing composite drill bit center portion it is weak caused by phenomenon " from the bottom of one's heart ", can guarantee the service life that composite drill bit is improved while the rate of penetration of composite drill bit simultaneously.
Description
Technical field
The utility model relates to the drilling equipments technology such as petroleum gas, mine engineering, architectural engineering, geology, hydrology necks
Domain, especially a kind of there are two the composite drill bits of recombination region.
Background technique
Currently, in petroleum, natural gas and other mine locating drillng operations, mainly using rock bit and PDC(plycrystalline diamond Buddha's warrior attendant
Stone composite sheet) drill bit progress exploration operation.When bore meet it is soft or hard staggeredly, containing the stratum such as gravel layer when, rock bit rate of penetration is slow,
Drilling depth is low, and be easy to cause the rock bit service life short；PDC drill bit composite sheet is easy to be led to composite sheet by biggish shock loading
Failure, to influence drill bit rate of penetration, drill bit fails because of the premature breakdown of PDC cutting tooth.
United States Patent (USP) " Hybrid Drill Bit and Method of Drilling " (application number: US7845435) is public
A kind of gear wheel and PDC composite drill bit, each gear wheel opened individually are arranged on independent tooth pawl, are impacted by gear wheel cutting tooth
Precrushing rock helps to cut the effective wedging rock of fixation cutting tooth on wing, improves efficiency of breaking rock.
But at present composite drill bit be at home and abroad easy in application process the fixation cutting tooth because of drill bit center portion abrasion,
Impact etc. reasons and fail, be easy drill bit center portion formed a circular groove, text in be referred to as phenomenon " from the bottom of one's heart ", finally lead
Drill bit is caused to lead to the failure of drill bit because of rate of penetration dramatic decrease.
Chinese patent " a kind of composite drill bit for strengthening center portion rock breaking capacity " (application number: CN201510490384.4) is open
A kind of reinforcing center portion rock breaking capacity composite drill bit, arrange PDC cutting tooth to strengthen center portion on the short sword wing described in it
Rock breaking capacity.But this structure guarantee center portion have the function of prevent " from the bottom of one's heart " while, due to the increasing of its center portion cutter set density
Add, the rate of penetration of drill bit also rapidly reduces, and reduces the drilling efficiency of drill bit, improves drilling cost.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the prior arts provides a kind of rate of penetration that can guarantee drill bit
Meanwhile improving the service life composite drill bit of composite drill bit.
The purpose of this utility model is achieved through the following technical solutions: a kind of there are two the composite drill bits of recombination region.
Include bit body, cutting wing and nozzle are provided on bit body, bite wing contour is divided into center portion, hat from the inside to the outside
Top, outer cone and gauge section；The cutting center portion of wing, crown are provided with main cutting tooth at outer cone；The guarantor of the cutting wing
Passive gauge tooth is provided with above diameter section；The bit body is additionally provided with bit leg between the external taper gap of cutting wing, institute
The bit leg upper end stated couples integrally with bit body, and the lower end of bit leg is provided with gear wheel, and gear wheel is equipped with gear wheel cutting tooth, described
Bit body is additionally provided with center portion pair cutting tooth between the center portion gap of cutting wing.
Further, the main cutting tooth and the compound drape tooth of center portion pair cutting tooth that cutting wing center portion is set.
Further, the main cutting tooth being arranged at cutting wing crown and outer cone and the compound covering of gear wheel cutting tooth
Cloth tooth.
Further, location radii of the center portion pair cutting tooth on drill bit is identical as main cutting tooth；The center portion pair
Cutting tooth crown contour line is lower than main cutting crown contour line along drill bit axial height.
Further, the wing groove along drill bit central axis rotation is disposed on the cutting wing.
Further, the wing groove along drill bit central axis rotation is disposed on the cutting wing.
Further, the main cutting tooth and center portion pair cutting tooth are uniformly arranged on different cutting wings.
Further, the main cutting tooth, center portion pair cutting tooth material be composite polycrystal-diamond, thermostabilization plycrystalline diamond
Diamond, natural diamond, any one in impregnated diamond.
Further, the material of the gear wheel cutting tooth is hard alloy or does the hard that processing is reinforced on surface with diamond
Alloy.
Further, back reaming tooth is additionally provided at the top of the gauge section of the cutting wing.
The utility model has the advantage that be cut by active cutting tooth, the center portion pair being respectively arranged on cutting wing
Cut tooth and wing groove, come solve existing composite drill bit center portion it is weak caused by phenomenon " from the bottom of one's heart ", can guarantee composite drill simultaneously
The service life of composite drill bit is improved while the rate of penetration of head.
Detailed description of the invention
Fig. 1 is the definition in composite drill bit each region in planar cloth tooth of recombination region there are two the utility model is a kind of；
Fig. 2 is the composite drill bit cloth tooth overlay planes design drawing of recombination region there are two the utility model is a kind of；
Fig. 3 is the stereoscopic three-dimensional figure of the embodiment 1 of the composite drill bit of recombination region there are two the utility model is a kind of；
Fig. 4 is the top view of the embodiment 1 of the composite drill bit of recombination region there are two the utility model is a kind of；
Fig. 5 is the stereoscopic three-dimensional figure of the embodiment 2 of the composite drill bit of recombination region there are two the utility model is a kind of；
Fig. 6 is the top view of the embodiment 2 of the composite drill bit of recombination region there are two the utility model is a kind of；
In figure, 1- bit body, 11- drill bit central axis, 12- main cutting serrated knife Ji profile, 13- center portion pair cutting serrated knife Ji
Profile, 14- bit gauge protection profile, 2- bit cutting wing, 21- main cutting tooth, 211- main cutting crown contour line, 22- center portion
Secondary cutting tooth, 221- center portion pair cutting tooth crown contour line, 23- passive gauge tooth, 24- back reaming tooth, 25- wing groove, 3-
Gear wheel, 31- gear wheel cutting tooth, 311- gear wheel cutting tooth crown contour line, 4- bit leg, 5- nozzle, D- center portion, C- crown, outside B-
Cone, A- gauge section.
Specific embodiment
The utility model is further described with reference to the accompanying drawing, but the protection scope of the utility model is not limited to
It is as described below.
The utility model is a kind of there are two the composite drill bit of recombination region, the definition such as Fig. 1 in each region in planar cloth tooth
Shown, the overlay area of drill bit is made of 4 parts such as " center portions ", " crown ", " outer cone " and " gauge " respectively.
The utility model is a kind of there are two the composite drill bit of recombination region, and cloth tooth overlay planes design drawing is as shown in Fig. 2, bore
Head contains two composite coverage areas in planar design, is drill bit " center portion " and " crown-outer cone " part respectively.Figure
In, all cutting tooths are all rotated along drill bit central axis 11 drill bit at work.Main cutting tooth 21 is from center line of bit
11 start along the radial bit gauge protection profile 14 for being arranged into drill bit always, center portion pair cutting tooth 22 with main cutting tooth 21 is compound covers
The region of lid is the center portion of drill bit, and location radii of the center portion pair cutting tooth 22 on drill bit is identical as main cutting tooth 21, but the heart
Portion's pair cutting tooth crown contour line 221 it is lower than main cutting crown contour line 211 along drill bit axial height.Gear wheel cutting tooth 31 with
The region of the compound covering of main cutting tooth 21 is drill bit " crown-outer cone " part.
According to the difference of the formation lithology of concrete application, along the axial direction of each gear wheel cutting tooth 31, gear wheel cutting tooth crown
Contour line 311 and the relative altitude of main cutting crown contour line 211 are all different.Main cutting serrated knife Ji profile 12 and center portion pair
Cutting serrated knife Ji profile 13 is not also identical along drill bit axial height, and such main cutting tooth 21 and center portion pair cutting tooth 22 all have
The grinningly height of respective cutting tooth.
In the present embodiment 1, as shown in Figure 3 and Figure 4, including bit body 1, bite Ji 2, tooth are provided on bit body 1
The palm 4 and nozzle 5 cut and are respectively disposed with main cutting tooth 21, center portion pair cutting tooth 22, passive gauge tooth 23, back reaming on wing 2
Tooth 24 and wing groove 25 are disposed with different gear wheel 3 on bit leg 4.If drill bit " center portion " main cutting tooth is not worn, rushes
Failure is hit, the center portion pair cutting tooth 22 of composite drill bit will not then work, and will not form Repeated Cutting with active cutting tooth 21
Effect；The active cutting tooth 21 of drill bit " if center portion " be worn, impact failure, actively form one together with wing groove 25
A " shallowly from the bottom of one's heart " effect, the failure that center portion pair cutting tooth 22 can promptly make up the active cutting tooth 21 of center portion are started to work,
The active cutting tooth that center portion pair cutting tooth 22 has reformed into new center portion in this way carries out cutwork.In the present embodiment specific real
Apply when, main cutting tooth 21 and center portion pair cutting tooth 22 are arranged on different wings.
In example 2, as shown in Figure 5 and Figure 6, the whole design idea of composite drill bit is same as Example 1, with reality
The difference for applying example 1 is that main cutting tooth 21 and center portion pair cutting tooth 22 are arranged on identical wing.
By a kind of composite drill bit there are two recombination region of the utility model, be respectively drill bit main cutting tooth 21 with
Center portion pair cutting tooth 22 is in the compound drape tooth of drill bit " center portion " and main cutting tooth 21 and gear wheel cutting tooth 31 in drill bit " crown-
The compound drape tooth of outer cone ", the advantages of designing in this way be solve existing composite drill bit center portion it is weak caused by phenomenon " from the bottom of one's heart ",
It can guarantee the service life that composite drill bit is improved while the rate of penetration of composite drill bit simultaneously.
Claims (9)
1. a kind of, there are two the composite drill bits of recombination region, it is characterised in that: includes bit body (1), bit body is arranged on (1)
There are cutting wing (2) and nozzle (5), cutting wing (2) profile is divided into center portion, crown, outer cone and gauge section from the inside to the outside；Institute
It states and is provided with main cutting tooth (21) at the center portion, crown, outer cone of cutting wing (2)；Above the gauge section of cutting wing (2)
It is provided with passive gauge tooth (23)；The bit body (1) is additionally provided with bit leg between the external taper gap of cutting wing (2)
(4), the bit leg (4) upper end couples integrally with bit body (1), and the lower end of bit leg (4) is provided with gear wheel (3), gear wheel (3)
It is equipped with gear wheel cutting tooth (31), the bit body (1) is additionally provided with center portion pair between the center portion gap of cutting wing (2) and cuts
Cut tooth (22)；
The wing groove (25) along drill bit central axis (11) rotation is disposed on cutting wing (2).
2. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the setting is being cut
The main cutting tooth (21) and the compound drape tooth of center portion pair cutting tooth (22) of the sharpener wing (2) center portion.
3. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the setting is being cut
Main cutting tooth (21) and gear wheel cutting tooth (31) compound drape tooth at the sharpener wing (2) crown and outer cone.
4. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the center portion pair is cut
It is identical as main cutting tooth (21) to cut location radii of the tooth (22) on drill bit；The center portion pair cutting tooth crown contour line (221)
It is lower than main cutting crown contour line (211) along drill bit axial height.
5. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the main cutting tooth
(21) it is uniformly arranged on different cutting wings (2) with center portion pair cutting tooth (22).
6. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the main cutting tooth
(21) it is uniformly arranged on identical cutting wing (2) with center portion pair cutting tooth (22).
7. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the main cutting tooth
(21), the material of center portion pair cutting tooth (22) be composite polycrystal-diamond, it is thermally stable polycrystalline diamond, natural diamond, pregnant
Be inlaid with gold any one in hard rock.
8. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the gear wheel cutting
The material of tooth (31) is hard alloy or does the hard alloy that processing is reinforced on surface with diamond.
9. a kind of composite drill bit there are two recombination region according to claim 1, it is characterised in that: the cutting wing
(2) back reaming tooth (24) are additionally provided at the top of gauge section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821195497.7U CN209621216U (en) | 2018-07-26 | 2018-07-26 | It is a kind of that there are two the composite drill bits of recombination region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821195497.7U CN209621216U (en) | 2018-07-26 | 2018-07-26 | It is a kind of that there are two the composite drill bits of recombination region |
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| Publication Number | Publication Date |
|---|---|
| CN209621216U true CN209621216U (en) | 2019-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821195497.7U Active CN209621216U (en) | 2018-07-26 | 2018-07-26 | It is a kind of that there are two the composite drill bits of recombination region |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302542A (en) * | 2020-10-30 | 2021-02-02 | 中国石油大学(北京) | PDC drill bit |
-
2018
- 2018-07-26 CN CN201821195497.7U patent/CN209621216U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302542A (en) * | 2020-10-30 | 2021-02-02 | 中国石油大学(北京) | PDC drill bit |
| CN112302542B (en) * | 2020-10-30 | 2022-03-22 | 中国石油大学(北京) | PDC drill bit |
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