CN206220857U - A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock - Google Patents
A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock Download PDFInfo
- Publication number
- CN206220857U CN206220857U CN201621274330.0U CN201621274330U CN206220857U CN 206220857 U CN206220857 U CN 206220857U CN 201621274330 U CN201621274330 U CN 201621274330U CN 206220857 U CN206220857 U CN 206220857U
- Authority
- CN
- China
- Prior art keywords
- tooth
- plow
- cutting
- drill bit
- gear wheel
- 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 discloses a kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock, mainly the rotation gear wheel being connected is rotated with composite drill bit including bit body, the stationary cutting structure with cutting tooth and at least one." plow type " tooth is disposed with the rotation gear wheel, rotating gear wheel can be with rotation with respect to bit body, rotate gear wheel has certain axle offset with respect to bit body center, so that rotating " plow type " tooth alternately broken rock in the way of plow on gear wheel, this broken rock mode is mainly tension failure with a kind of weak impact wedging, extruding rock, catalase.The shearing broken rock mode of the cutting tooth in the plow broken rock mode and stationary cutting structure of " plow type " tooth is combined and carries out broken rock, not only increases the stability of bit operation, and improve the bulk life time and efficiency of breaking rock of drill bit.
Description
Technical field
The utility model belongs to petroleum gas drilling field, more particularly to a kind of composite drill bit.
Background technology
In the drilling historical progress of petroleum gas, the utility model of rotary drilling mode certainly has milestone
Meaning.And the cutting element of rotary drilling exploitation used with rock bit and PDC drill bit it is most commonly seen and extensive.And with
Continuing to develop for the superhard materials such as diamond, PDC drill bit is in its unique broken rock mode and in the good of soft-medium hard formation
Service behaviour, has become the main cutting element in oil gas drilling.But, because PDC drill bit is with cut mode broken rock
Main, the bad adaptability in hard formation, rotating speed is low, and situations such as collapsing tooth, broken tooth, serious wear easily occurs in short life.At present, state
It is inside and outside mainly to use rock bit in hard formation drilling.Rock bit cuts rock by compound actions such as impact grinding, shearings
Stone, is primarily adapted for use in medium to hard formation drilling, and using effect is poor in soft formation, and the phenomenons such as mud drum easily occurs,
Under the big the pressure of the drill drilling condition of rotating speed high, situations such as easily there is fall tooth, serious wear, the failure of rock bit is ultimately resulted in.
In order to overcome rock bit and the respective deficiency of PDC drill bit, according to rock bit and the broken spy with rock cutting of PDC drill bit
Point, with reference to both advantages, there has been proposed gear wheel-PDC hybrid bits.
The structure of existing gear wheel-PDC hybrid bits is mainly with roller cone and fixing wing both at home and abroad at present
Hybrid bit.When drill bit creeps into, the first broken rock in the way of impacting of gear wheel, then the PDC teeth in fixing wing are with scraping
Mode broken rock.Because the broken rock mode of gear wheel has the difference of essence with PDC, gear wheel relies primarily on rock fracture in dynamic indentation, and PDC is solid
Fixed shearing, this causes job stabilitys of the very big interference PDC of the impact meeting that gear wheel is formed in broken rock in fixed cutting.This
Plant different mode of operation and combine the life-span for causing that the PDC teeth of PDC are easily damaged, and influence drill bit overall.And during gear wheel work
The longitudinal direction vibrations of generation cause that PDC cutting depth is unstable, reduce the overall efficiency of breaking rock of drill bit.In actual use, with
Upper gear wheel rolling impact is easily formed in shaft bottom with the combination broken rock mode of PDC scrapings and repeats broken region and shaft bottom bed course, special
It is not that shaft bottom confined pressure is larger when deep-well creeps into, water conservancy limited efficacy, the overall efficiency of breaking rock of extreme influence drill bit.
Utility model content
The purpose of this utility model is：A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock are provided, its
Gear wheel is proposed with plow mode broken rock, PDC cutting tooths are with tooth cut mode broken rock on stationary cutting structure.This combination broken rock side
Formula makes gear wheel operationally impact small, stable working, improves the entirety of job stabilitys and drill bit of the PDC in fixed cutting
Life-span and efficiency of breaking rock.
The utility model purpose is realized by following technical proposals：
A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock, including bit body, the fixation with cutting tooth
Cutting structure and at least one rotates gear wheel, and it is " plow type " tooth to rotate the cutting tooth on gear wheel, rotates gear wheel with respect to bit body
Center has axle offset；It is the Central Symmetry section of tooth that " plow type " tooth has tag type face A and characteristic face B, tag type face A,
Tooth is projected as characteristic face B in the normal surface direction in the face；
Tag type face A has includes following geometric properties：
A. bottom of the tooth toward up to die joint be mounting part point, tooth top down to die joint be plow part；
B. from die joint to tooth top direction, the wedge shaped convergence of curve of plow part；
C. curve its stationary point tangent line in plow part both sides is restraining direction angle at 45 °~80 °；
D. its tip portions of plow partial trace are circular arc, and circular arc width is not more than 6mm, arc radius scope 2mm~
5mm；
Characteristic face B has includes following geometric properties：
A. from die joint to tooth top direction, the curve of plow part is tapered；
B. the vertex of a cone angular region of taper is 45 °~90 °.
Composite drill bit of the present utility model is to rotate setting " plow type " cutting tooth and stationary cutting structure on gear wheel
On (PDC) cutting tooth joint cutting fractured rock, wherein at least one rotates gear wheel and composite drill bit and rotates and be connected, rotation tooth
The relative bit body of wheel can be with rotation.It is characterized in：Due to rotating " plow type " tooth of the cutting tooth on gear wheel using this patent, because
This rotates a kind of gear wheel broken rock in the way of new " plow " for being different from prior art, and " plow type " tooth rotated on gear wheel is handed over
Replace the broken rock in the way of plow, it is further compound with stationary cutting structure after, rotate " plow type " tooth on gear wheel alternately with
The mode broken rock of " plow ", and (PDC) cutting tooth on stationary cutting structure carries out broken rock in the way of shearing-crushing.Rotate tooth
" plow type " tooth on wheel replaces plow broken rock, and its tangential rock breaking efficiency meets shearing broken rock feature, and its lateral broken rock is extruding
Broken rock, " adjacent " effect can be produced in broken rock between multiple " plow type " teeth.With reference to shown in Fig. 3,4, a is fracture body in Fig. 3,
B is fragmentation body, and c is compact core, and d is radial cracking, and X is broken region in Fig. 4.This rock breaking efficiency makes gear wheel operationally rush
Hit small, stable working, and also rock cutting is easier and rock-breaking efficiency is higher, thus (PDC) cutting tooth is improve solid
Job stability when cutting surely, while improve the bulk life time and efficiency of breaking rock of drill bit.
Composite drill bit of the present utility model is compared to domestic and international existing composite drill bit at present, it is proposed that a kind of different is combined
Cutting broken rock mode, wherein gear wheel carry out cutting broken rock in the broken rock mode of alternately " plow ", and the broken rock mode is different from the past
Gear wheel by impacting and shearing broken rock, operationally, gear wheel is rolled conventional gear wheel, and contact of the tooth with shaft bottom is monodentate, double
Tooth interlocks what is carried out.During monodentate contact shaft bottom, gear wheel center is in extreme higher position；The center of tooth during bidentate contact shaft bottom
Decline.During rolling, gear wheel center constantly exchanges conventional gear wheel up and down, drill bit is up and down reciprocatingly transported vertically
It is dynamic, here it is the longitudinal direction vibrations of drill bit.The longitudinal direction vibrations of drill bit make tooth produce impulsive force, to impact mode fractured rock.
Gear wheel described in this patent is that, with a kind of weak impact wedging and attrition crushing rock, catalase is mainly tension
Failure.So the impulsive force for making gear wheel be produced when broken rock is cut is small, it is greatly reduced conventional gear wheel and PDC is cut fixed
When job stability influence, so as to improve the service life and efficiency of breaking rock of drill bit.
And from concrete structure for, the cutting tooth on " plow type " tooth gear wheel compared to existing technology of this patent, its
Differ primarily in that：
Tooth top kenel：Cutting toothing on existing gear wheel mainly meets impact requirement of the tooth to bottom rock,
It is required that tooth impact resistance.So compare " blunt " in tooth apex structure kenel." plow type " tooth of this patent mainly meets tooth
Wedging requirement to bottom rock, it is desirable to which tooth is easy to dig trace.So compared with " sharp " in tooth apex structure kenel.
Tooth structure is divided：Whole tooth is divided into two parts, mounting part point and plough by " plow type " tooth of this patent
Cut part.Wherein its radial cross-sectional shape of mounting portion enriches, and can be conventional circular, and ellipse etc. enters also dependent on formation condition
Row custom design.
Plow part：Its plow part-structure form of " plow type " tooth of this patent is clear and definite, such as herein to the spy of the tooth
Levy the description of type face A and characteristic face B.
Alternatively, the rotation gear wheel with " plow type " tooth is disposed alternately at the stationary cutting structure with cutting tooth
On drill bit.In this programme, gear wheel is set alternately to cut bottom rock with stationary cutting structure cutting broken rock.
Alternatively, cutting tooth on gear ring and the stationary cutting structure on gear wheel is rotated in drill bit radially non-same rail cloth
(i.e. Cutting trajectory difference rail) is put, the Cutting trajectory of the cutting tooth on " plow type " tooth and stationary cutting structure on gear wheel is rotated
Interlock, form the netted cutting zone of alternative expression.In the program, it is this alternately plow with scrape cut united broken rock mode will not
Formed in shaft bottom and repeat broken region, it is to avoid formation shaft bottom bed course, its effect is better than existing gear wheel-PDC composite drill bits.
Alternatively, " plow type " the tooth well-bottom trace rotated on each gear ring of gear wheel is not shallower than on stationary cutting structure therewith
The Cutting trajectory of the cutting tooth of adjacent cutting track.In the program, when " plow type " the tooth well-bottom trace on gear wheel be deeper than it is described
On stationary cutting structure during the Cutting trajectory of the cutting tooth of Cutting trajectory adjacent thereto, the leading wedging rock stratum of " plow type " tooth subtracts
The vibration of few drill bit, increases stability during bit operation.
Alternatively, the vertex of a cone angular region of " plow type " tooth is 45 °~80 °.In the program, when the vertex of a cone of " plow type " tooth
When angle is more than 80 °, the vertex of a cone is too blunt, when cutting rock breaking efficiency variation, and cone-apex angle less than 45 °, the vertex of a cone part of " plow type " tooth
It is relatively too thin and be easily broken off, influence bit life.And the vertex of a cone angular region of " plow type " tooth be 45 ° to 80 ° between when, its work
Impact resistance and wearability when making is preferable.
Alternatively, " plow type " tooth orthogonal cutting angle is 5 °~65 °.In the program, " plow type " tooth operationally edge
The direction of motion it is tangential on, have at two stress maximum area, respectively positioned at " plow type " tooth front both sides partially, its plow effect is bright
It is aobvious；And " plow type " tooth both sides during plow can also produce squeezing action to rock, multiple " plow type " teeth are simultaneously broken
" adjacent " effect, this " adjacent " effect can be also produced to cause phacolith again by the cutting tooth on stationary cutting structure during rock
Become easier to crush during cutting.
Alternatively, described " plow type " tooth is that conical tooth, the i.e. part of cutting tooth exposure gear wheel are cone arc transition
Circular conical surface cutting tooth.Required during plow mode broken rock cutting tooth used can neither too sharply can not be too blunt, when too sharp
Cutting tooth is easily worn and torn, and the broken rock mode of cutting tooth can change and wear and tear and can also aggravate when too blunt.Conical tooth is with plow
During mode broken rock, rock surface cracked shape can well control the abrasion of cutting tooth and broken rock mode, very well to fall " Λ " shape
The requirement for meeting plow broken rock.
Alternatively, the distance between gear wheel axis and drill axis are rotated with the ratio range of bit diameter in 0.05-
Between 0.25.In the program, the rotation gear wheel axis is bigger with the ratio of bit diameter with the distance between drill axis, turns
Dynamic gear wheel rotational velocity is slower, then rotate gear wheel rotation rotating speed lower with the relative ratio of revolution rotating speed.Tooth is rotated by setting
Take turns in the position different relative to bit body and angle and rotate the different arrangements of gear wheel upper teeth, in that context it may be convenient to control
System and the fast ratio of the wheel head of rotation gear wheel and drill bit that changes.When composite drill bit works, different wheel head speed are than boring rotation gear wheel
Rock cutting effect during entering is different, and the main purpose that this composite drill bit rotates gear wheel rotation is not cutting tooth is produced punching
Power is hit, but makes " plow type " tooth alternation, uniform wear.And small wheel head speed than make drill bit axial reciprocating motion amplitude compared with
It is small, the axial vibrations of drill bit are reduced, when being crept into hard formation, the periodicity dynamic load impact that roller axle is afforded is also corresponding
Reduce, it is not easy to fatigue failure occur.
Alternatively, rotate gear wheel to be arranged on bit body by tooth pawl, rotate the rotation of gear wheel and tooth pawl and be connected, tooth pawl and
Bit body is fixed.In the program, the rotation gear wheel is directly fixedly mounted on bit body by tooth pawl, and its axial load passes through
Tooth pawl is directly delivered on bit body, and the structural-load-carrying capacity is good, increased the reliability of bit operation.The skill of this mounting means
Art is ripe, it is possible to decrease the production cost of drill bit.
Alternatively, gear wheel is rotated to be rotatably connected on stationary cutting structure.In the program, due to the structure and work of gear wheel
Make feature, it carries a set of lubricating system, and the installation of lubricating system can influence the size of whole composite drill bit.And in this structure
The implantable stationary cutting structure of lubricating system, so that composite drill bit physical dimension is freer.In addition, in small bits
Because space is limited, rotates gear wheel and the axle offset design and drill bit for being conducive to gear wheel are arranged on stationary cutting structure by tooth pawl
Overall structure size and hydraulic structure, and sump volume is cut by the row of increasing, and tooth pawl back of the body when can avoid bit operation
Abrasion.
Alternatively, stationary cutting structure is fixing wing, and cutting tooth is PDC teeth thereon.In the program, using most common
Stationary cutting structure：Fixing wing+PDC teeth.
The foregoing main scheme of the utility model and its each further selection scheme can be with independent assortments to form multiple schemes,
For the utility model can be used and claimed scheme；And the utility model, (each non conflicting selection) selection between and and
Can also independent assortment between other selections.Those skilled in the art after the utility model scheme is understood according to prior art and
Common knowledge can understand there is multiple combination, be the claimed technical scheme of the utility model, and exhaustion is not done herein.
Brief description of the drawings
Fig. 1 is the structural representation that rotation gear wheel of the present utility model is arranged on tooth pawl；
Fig. 2 is the top view of Fig. 1 composite drill bits；
Schematic diagram (tangential) when Fig. 3 is " plow type " tooth " plow " rock on the utility model bit cone；
" neighborhood effect " schematic diagram when Fig. 4 is " plow type " tooth " plow " rock on the utility model bit cone；
Fig. 5 is the radial well bottom of the cutting tooth on " plow type " tooth and stationary cutting structure on the utility model bit cone
Covering schematic diagram；
Fig. 6 is on the utility model bit cone " plow type " cutting tooth on tooth and stationary cutting structure shaft bottom cutting
Track schematic diagram；
Tangent top rake α schematic diagrames when Fig. 7 is " plow type " tooth " plow " rock on the utility model bit cone；
Fig. 8 is arranged on structural representation on stationary cutting structure for rotation gear wheel of the present utility model；
Fig. 9 is the structural representation of the utility model " plow type " tooth；
Figure 10 is the schematic diagram of the tag type face A of the utility model " plow type " tooth；
Figure 11 is the schematic diagram of the characteristic face B of the utility model " plow type " tooth；
Wherein 1 is bit body, 2 is stationary cutting structure, 3 is tooth pawl, 4 is rotation gear wheel, 9 is shaft bottom cutting face, 10 are
Drill bit, 41 be " plow type " tooth, 21 for stationary cutting structure cutting tooth, 22 be die joint, 23 be mounting part point, 24 be
Plow part.
Specific embodiment
Following non-limiting examples are used to illustrate the utility model.
As shown in Figures 1 to 4, a is fracture body in Fig. 3, and b is fragmentation body, and c is compact core, and d is radial cracking, X in Fig. 4
To crush region.A kind of alternately plow and the composite drill bit 10 for scraping butt formula combined-breaking rock, mainly include：Bit body 1, with cutting
The stationary cutting structure 2 and at least one and composite drill bit 10 of cutting tooth 21 rotate the rotation gear wheel 4 being connected, and as shown in Figure 1, 2, turn
Dynamic gear wheel 4 is arranged on bit body 1 by tooth pawl 3, is rotated gear wheel 4 and is connected with the rotation of tooth pawl 3, and tooth pawl 3 is fixed with bit body 1；
Or be directly rotatably connected on stationary cutting structure 2 (fixing wing) as shown in figure 8, rotating gear wheel 4, instead of gear wheel will be rotated
4 are arranged on bit body 1 by tooth pawl 3.It is " plow type " tooth 41 to rotate the cutting tooth on gear wheel 4, rotates gear wheel 4 with respect to drill bit
Body 1 can be with rotation, and rotate gear wheel 4 has certain axle offset with respect to the center of bit body 1 so that rotate " the plow type " on gear wheel 4
Cutting on the alternately broken rock in the way of plow of tooth 41, the plow broken rock mode of " plow type " tooth 41 and stationary cutting structure 2
The shearing broken rock mode of tooth 21 is combined and carries out broken rock.
Alternatively, rotate gear wheel 4 to be disposed alternately on drill bit 10 with the stationary cutting structure 2 with cutting tooth 21, such as
Shown in Fig. 1,2,8, two rotate gear wheel 4 and two stationary cutting structures 2 (fixing wing) friendships with cutting tooth 21 (PDC teeth)
For setting.
Alternatively, the distance between the axis of gear wheel 4 and the axis of drill bit 10 is rotated to exist with the ratio range of the diameter of drill bit 10
Between 0.05-0.25.
Alternatively, the cutting tooth 21 on gear ring and the stationary cutting structure 2 on gear wheel 4 is rotated in drill bit 10 radially
Upper non-same rail arrangement, as shown in figure 5, both Cutting trajectory difference rails with this.Rotate " plow type " tooth 41 on gear wheel 4 with it is solid
The Cutting trajectory for determining the cutting tooth 21 on cutting structure 2 interlocks, and forms the netted cutting zone of alternative expression.As shown in Figure 6.
Alternatively, rotate " plow type " well-bottom trace of tooth 41 on each gear ring of gear wheel 4 and be not shallower than the fixed cutting knot
The Cutting trajectory of the cutting tooth 21 of Cutting trajectory adjacent thereto on structure 2.
" plow type " tooth has a tag type face A and characteristic face B, tag type face A for tooth Central Symmetry section (i.e. tooth top
The a certain vertical section of peak, the vertical section is by plow partial dissection into symmetrical two parts), normal surface of the tooth in the face
Direction is projected as characteristic face B (another vertical section i.e. vertical with tag type face A), referring to Fig. 9,10,11.
Tag type face A has includes following geometric properties：
A. bottom of the tooth is that mounting part divides 23 (being mounted on the not exposure part in gear wheel) toward up to die joint 22,
Tooth top down to die joint 22 be plow part 24 (i.e. exposure is in the exposure part outside gear wheel)；
B. from die joint 22 to tooth top direction, the wedge shaped convergence of curve of plow part 24；
C. its stationary point tangent line of the both sides curve of plow part 24 is restraining direction angle ɑ at 45 °~80 °；
D. its tip portions of the curve of plow part 24 are circular arc, and circular arc width D is not more than 6mm, arc radius R scopes 2mm
~5mm；
Characteristic face B has includes following geometric properties：
A. from die joint 22 to tooth top direction, the curve of plow part 24 is tapered；
B. the cone-apex angle β scopes of taper are 45 °~90 °, between still more preferably 45 ° to 80 °.
Preferably, as shown in figures 1-8, " plow type " tooth 41 is that conical tooth, the i.e. part of cutting tooth exposure gear wheel are cone
The cutting tooth of the circular conical surface of sharp arc transition.A kind of preferred " plow type " tooth is illustrated in Fig. 9-11, the tooth has relative rule
Conical plow part 24 then, is the tag type face A of asymmetrical graphic with the curve of a plow part 24, such as Figure 10 institutes
Show, tag type face A is towards right lateral bending.
" plow type " arrangement when, preferably the orthogonal cutting angle [alpha] of " plow type " tooth 41 (i.e. cloth tooth when plow is partially toward well
Undercutting bevel 9 simultaneously turns forward along cutting direction so that tooth top direction forms an angle α with the direction of peupendicular hole undercutting bevel,
The angle α is the orthogonal cutting angle [alpha] of this patent.For conical tooth, i.e. the vertical line y in the axis x of tooth and shaft bottom cutting face 9
Between angle α) between 5 ° to 65 °.As shown in Figure 7.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock, including bit body, the fixation with cutting tooth are cut
Cut structure and at least one and rotate gear wheel, it is characterised in that：It is " plow type " tooth to rotate the cutting tooth on gear wheel, rotates gear wheel phase
There is axle offset to bit body center；It is the center pair of tooth that " plow type " tooth has tag type face A and characteristic face B, tag type face A
Section, tooth is claimed to be projected as characteristic face B in the normal surface direction in the face；
Tag type face A has includes following geometric properties：
A. bottom of the tooth toward up to die joint be mounting part point, tooth top down to die joint be plow part；
B. from die joint to tooth top direction, the wedge shaped convergence of curve of plow part；
C. curve its stationary point tangent line in plow part both sides is restraining direction angle at 45 °~80 °；
D. its tip portions of plow partial trace are circular arc, and circular arc width is not more than 6mm, arc radius scope 2mm~5mm；
Characteristic face B has includes following geometric properties：
A. from die joint to tooth top direction, the curve of plow part is tapered；
B. the vertex of a cone angular region of taper is 45 °~90 °.
It is 2. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：Carry
The rotation gear wheel of " plow type " tooth is disposed alternately on drill bit with the stationary cutting structure with cutting tooth.
It is 3. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：Rotate tooth
The cutting tooth on gear ring and stationary cutting structure on wheel in drill bit, radially arrange by non-same rail, rotates " the plow type " on gear wheel
Tooth replaces with the Cutting trajectory of the cutting tooth on stationary cutting structure and interlocks, and forms the netted cutting zone of alternative expression.
It is 4. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：Rotate tooth
" plow type " the tooth well-bottom trace taken turns on each gear ring is not shallower than the cutting tooth of Cutting trajectory adjacent thereto on stationary cutting structure
Cutting trajectory.
It is 5. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：" plow
The vertex of a cone angular region of type " tooth is 45 °~80 °.
It is 6. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：" plow
Type " tooth orthogonal cutting angle is 5 °~65 °.
It is 7. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：Rotate tooth
The ratio range of the distance between wheel axis and drill axis and bit diameter is between 0.05-0.25.
It is 8. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：Rotate tooth
Wheel is arranged on bit body by tooth pawl, is rotated gear wheel and is connected with the rotation of tooth pawl, and tooth pawl is fixed with bit body；Or, rotate tooth
Wheel is directly rotatably connected on stationary cutting structure.
It is 9. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：" plow
Type " tooth is conical tooth.
It is 10. as claimed in claim 1 to replace plow and the composite drill bit for scraping butt formula combined-breaking rock, it is characterised in that：It is fixed
Cutting structure is fixing wing, and cutting tooth is PDC teeth thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274330.0U CN206220857U (en) | 2016-11-24 | 2016-11-24 | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621274330.0U CN206220857U (en) | 2016-11-24 | 2016-11-24 | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206220857U true CN206220857U (en) | 2017-06-06 |
Family
ID=58787266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621274330.0U Active CN206220857U (en) | 2016-11-24 | 2016-11-24 | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206220857U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523011A (en) * | 2016-12-22 | 2017-03-22 | 河南工程学院 | Simple light rack and top coal caving method applying rack |
| CN106639886A (en) * | 2016-11-24 | 2017-05-10 | 西南石油大学 | Composite drill bit used for breaking rocks in ploughing and cutting combined and alternating mode |
| US12065883B2 (en) | 2020-09-29 | 2024-08-20 | Schlumberger Technology Corporation | Hybrid bit |
| US12084919B2 (en) | 2019-05-21 | 2024-09-10 | Schlumberger Technology Corporation | Hybrid bit |
-
2016
- 2016-11-24 CN CN201621274330.0U patent/CN206220857U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639886A (en) * | 2016-11-24 | 2017-05-10 | 西南石油大学 | Composite drill bit used for breaking rocks in ploughing and cutting combined and alternating mode |
| CN106523011A (en) * | 2016-12-22 | 2017-03-22 | 河南工程学院 | Simple light rack and top coal caving method applying rack |
| CN106523011B (en) * | 2016-12-22 | 2018-09-04 | 河南工程学院 | A kind of simple light hydraulic support and use the holder Sub-Level Caving coal-mining method |
| US12084919B2 (en) | 2019-05-21 | 2024-09-10 | Schlumberger Technology Corporation | Hybrid bit |
| US12065883B2 (en) | 2020-09-29 | 2024-08-20 | Schlumberger Technology Corporation | Hybrid bit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102434105B (en) | Composite bit with rotary cut rock-breaking function | |
| CN105507817B (en) | The hybrid bit of old slot structure is followed with anti-drill bit | |
| CN206220857U (en) | A kind of alternately plow and the composite drill bit for scraping butt formula combined-breaking rock | |
| CN102536124B (en) | Single-roller bit with PDC (polycrystalline diamond compact) composite plates | |
| CN106089087B (en) | A kind of punching composite drill bit suitable for bad ground | |
| CN102678050B (en) | A kind of have the gear wheel composite drill bit impacting cutting structure | |
| CN106437525A (en) | Composite drill bit suitable for stratum difficult to drill | |
| CN102392605A (en) | Compound bit formed by PDC (polycrystalline diamond compact) bits and rotary cutting bit | |
| CN102392603A (en) | Compound bit formed by rotary cutting bit and PDC (polycrystalline diamond compact) blades | |
| CN202659151U (en) | Scraping cutting and impacting combined drilling bit | |
| CN202493219U (en) | Combined bit formed by peeling bits and PDC (Polycrystalline Diamond Compact) blades | |
| CN103541660A (en) | Composite type eccentric one-cone bit | |
| CN102022084B (en) | Compound single cone bit | |
| CN202659149U (en) | Disc-type composite drill bit with impact cutting structure | |
| CN202673148U (en) | Cross scraping-impacting combined type drill bit | |
| CN102400646B (en) | Composite bit formed by rotary cut bit and roller bit | |
| CN208885190U (en) | A kind of Mixed drilling bit with plow tooth | |
| CN109681122A (en) | A kind of two rank step scraper | |
| CN106368615A (en) | Compound drill bit with steering wheel disc | |
| CN213627443U (en) | Polycrystalline diamond compact bit with butterfly-shaped cloth teeth | |
| CN106639886A (en) | Composite drill bit used for breaking rocks in ploughing and cutting combined and alternating mode | |
| CN202441267U (en) | Combined drill bit having rock-breaking function through rotary cutting | |
| CN202659148U (en) | Disc-cutter compound drill bit | |
| CN201943582U (en) | Combined type singe-roller bit | |
| CN208430975U (en) | A kind of long-life single rock bit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |