CN206429197U - A kind of steel edge mixing cloth tooth roller drill bit - Google Patents
A kind of steel edge mixing cloth tooth roller drill bit Download PDFInfo
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- CN206429197U CN206429197U CN201621481466.9U CN201621481466U CN206429197U CN 206429197 U CN206429197 U CN 206429197U CN 201621481466 U CN201621481466 U CN 201621481466U CN 206429197 U CN206429197 U CN 206429197U
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- tooth
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- drill bit
- mixing cloth
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Abstract
The utility model discloses a kind of steel edge mixing cloth tooth roller drill bit, it includes at least one bit leg and gear wheel, and steel-tooth tooth row is installed on gear wheel, it is characterised in that：Hard-metal insert is installed between at least tooth of row's steel-tooth on gear wheel, steel-tooth, inserted mixing cloth tooth tooth row is formed.Steel edge mixing cloth tooth tooth row of the present utility model can effectively improve the abrasive resistance of corresponding gear ring, it is to avoid the layer avalanche of steel-tooth tooth surfacing and heavy wear, it is to avoid occur drill bit undergauge, so as to reach the purpose for improving rock bit service life.
Description
Technical field
The utility model is related to a kind of rock bit for petroleum gas and mining drilling applications, more particularly to a kind of
Bore the steel edge mixing cloth tooth roller drill bit that milling bridging plug operation etc. is used.
Background technology
Existing rock bit at least includes a bit leg 2 and a gear wheel 3, and common rock bit includes three bit legs
With three gear wheels.The gear wheel cutting tooth of existing rock bit has steel-tooth and inserted two kinds, and steel-tooth dental surface surfacing has wear-resisting
Material, inserted dental material is hard alloy, the rock bit of steel tooth cutting structure is used for steel tooth bit, using inserted
The rock bit of cutting structure is insert bit.Each gear wheel includes multiple tooth tooth rows, positioned at rock bit outermost
Tooth row be outer rows of teeth, positioned at rock bit most inner side close to bit central tooth row be top row tooth, remaining tooth row be inner row teeth.
In drilling process, drill bit is threadedly attached on the drilling tools such as drilling rod or screw rod, when rotating disk or top drive drive drilling rod
Rotation, or the drilling tool such as screw rod, when carrying out power output, drill bit is rotated, broken formation, shape under certain the pressure of the drill effect
Into tubbiness well.
In recent years, as shale gas is developed and the change of drilling technology, bridging plug is largely used to petroleum exploration and development process
Middle seperated layer water injection, formation testing by layer, separate stratum fracfturing acidifying, layerwise production and closing water layer, closing dried layer and closing waste layer etc.
Sealing operation, the use field of rock bit also progressively expands to brill milling bridging plug operation, and rock bit bores milling bridging plug operation signal
Figure is as shown in Figure 1.Consider from boring plug efficiency, boring many factors such as plug effect, cost, currently used for the brill for boring milling bridging plug operation
Head is mainly steel tooth bit.
When bridging plug is set, by the relative motion of central tube and package assembly, make pushing cylinder motion compresses packing element and upper lower slipses,
Packing element distending is adjacent to casing wall, reaches the purpose of packing levels.Slips is assembled by multiple small casting pigs, and hardness is higher,
Be that bridging plug is most difficult to bore the material removed, easily cause the layer avalanche of rock bit steel-tooth surfacing or heavy wear, due to cone outer row tooth and
Secondary outer rows of teeth directly acts on the cast iron slips positioned at bridging plug outer ring, drill bit undergauge and the spacious dynamic situation of bearing easily occurs, seriously
Influence the service life of drill bit.
The deficiency that existing rock bit is present is：Boring the field such as milling bridging plug, although steel tooth bit bore plug efficiency,
There is a larger advantage in terms of boring plug effect and cost, but bore gear wheel steel-tooth when meeting cast iron slips and easily occur wear-resisting surfacing layer and collapse
Fall and heavy wear, the brill plug quantity and drill bit of single drill bit are relatively low using reliability.
Utility model content
Technical problem to be solved in the utility model is that the deficiency existed for above-mentioned prior art provides a kind of steel
Edge mixing cloth tooth roller drill bit, it not only with higher rate of penetration or bores plug efficiency, and wearability is strong, service life
It is long.
The technical scheme that the utility model is used for：A kind of steel edge mixing cloth tooth roller drill bit, it includes at least one
Bit leg and gear wheel, are installed on steel-tooth tooth row on gear wheel, it is characterised in that：Between at least tooth of row's steel-tooth on gear wheel
Hard-metal insert is installed with, steel-tooth, inserted mixing cloth tooth tooth row is formed.
By above-mentioned technical proposal, the mixing cloth tooth tooth row is installed in the outer row or interior row of gear wheel.
By above-mentioned technical proposal, provided with one or more mixing cloth tooth tooth row on gear wheel.
By above-mentioned technical proposal, be laid between two adjacent steel-tooth teeth of the mixing cloth tooth tooth row one or one with
On hard-metal insert.
By above-mentioned technical proposal, the proud exposure of the steel-tooth tooth in the mixing cloth tooth tooth row is more than or equal to this tooth row
The proud exposure of hard-metal insert, proud exposure difference is between 0~10mm.
By above-mentioned technical proposal, the tooth in the steel-tooth tooth row is tied using one or both of straight steel-tooth, oblique steel-tooth
Structure is arranged.
By above-mentioned technical proposal, the straight steel-tooth is 0 ° with gear wheel axis angle, and oblique steel-tooth inclines with roller axle line formation one
Rake angle α.
By above-mentioned technical proposal, α span is 15 °~45 °.
By above-mentioned technical proposal, the surface of the steel-tooth tooth is provided with wear-resisting surfacing layer, and the wear-resisting surfacing layer is full bag
Wear-resisting surfacing layer partly wraps wear-resisting surfacing layer.
By above-mentioned technical proposal, the span of hard alloy tooth diameter is 4~50mm in the mixing cloth tooth tooth row.
Having the beneficial effect that acquired by the utility model：
1st, when boring milling bridging plug operation, the steel edge mixing cloth tooth tooth row covering bridging plug cast iron slips scope of utility model can
Effectively improve the abrasive resistance of corresponding gear ring, it is to avoid the layer avalanche of steel-tooth tooth surfacing and heavy wear, it is to avoid occur drill bit undergauge,
So as to reach the purpose for improving rock bit service life, improving single drill bit brill plug quantity；
2nd, in mixing cloth tooth tooth row, the higher proud exposure of steel-tooth can ensure that rock bit has higher rate of penetration
Or bore plug efficiency；
3rd, can effectively improve can be with the greater number of hard alloy of insert between length, longer steel-tooth for the structure of oblique steel-tooth
Tooth, improves cutter set density, and then strengthen the abrasive resistance of this gear ring.
Brief description of the drawings
Fig. 1 is that rock bit bores milling bridging plug operation schematic diagram.
Fig. 2 mixes cloth tooth roller drill bit structure schematic diagram for the steel edge of one embodiment of the present utility model.
Fig. 3 mixes cloth tooth roller drill bit upward view for the steel edge of one embodiment of the present utility model.
Fig. 4 a-4c are steel edge mixing cloth tooth roller drill bit steel-tooth surfacing schematic diagram in the utility model.
Fig. 5 a-5d arrange schematic diagram for the steel edge mixing cloth tooth roller bit cone enumerated in the utility model.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 2,3, the drill bit of the embodiment bores for diameter 120.65mm (4 3/4 ") steel edge mixing cloth tooth roller
Head, including three bit legs 2 and three gear wheels 3, are installed on steel-tooth tooth row on gear wheel, at least row's steel-tooth 4 on gear wheel
Hard-metal insert 5 is installed between tooth, steel-tooth, inserted mixing cloth tooth tooth row, the wear-resisting material of surface surfacing of the tooth of steel-tooth 4 is formed
Material, forms the wear-resisting surfacing layer of tooth, it is possible to uses and wraps wear-resisting surfacing layer (such as Fig. 4 a) or half coated wear-resisting surfacing layer entirely (such as
Fig. 4 b, 4c) surfacing is carried out, the steel-tooth surface described in the present embodiment is employed wraps wear-resisting surfacing layer (such as Fig. 4 a) entirely.
During drilling well or brill bridging plug, drill bit is threaded on the drilling tools such as drilling rod or screw rod by the top of drill bit 1, when
When the drilling tool progress power outputs such as drive drilling tool rotation, or screw rod are driven on rotating disk or top, drill bit 1 is rotated and by predetermined road
Line is crept into, steel-tooth 4 and the continuous impact rock of hard-metal insert 5 or bridging plug on gear wheel 3, and then fractured rock or bridging plug.
As shown in figure 3, three gear wheels of described drill bit employ 3-2-2 tooth row number, each gear wheel outer row and
Interior row is provided with mixing cloth tooth tooth row.The hard-metal insert number of teeth that outer row is set is respectively 9,12 and 9, and interior row is set
The hard-metal insert number of teeth be 6.Wherein, the value of the diameter of hard-metal insert 5 is according to ROCK BIT'S DIAMETER and cast iron slips
Thickness is determined.It is preferred that, the hard alloy tooth diameter described in the present embodiment chooses both sizes of 8mm and 9.5mm.
In described mixing cloth tooth tooth row, the proud exposure of steel-tooth tooth is above this tooth row hard-metal insert, and exposure is high
Degree difference is between 0.5~5mm, and higher proud exposure can ensure that rock bit has higher brill plug efficiency.
As shown in Fig. 5 a-5d, the steel-tooth of three gear wheels of described drill bit employs two kinds of straight steel-tooth 4a and oblique steel-tooth 4b
Structure type, described straight steel-tooth and gear wheel axis angle is 0 °, and described oblique steel-tooth forms ± 27 ° of inclination with roller axle line
Angle (oblique steel-tooth 4b and gear wheel axis angle are 27 ° in such as figure, and oblique steel-tooth 4c and gear wheel axis angle are -27 ° in figure).Oblique steel
Tooth arrangement can effectively improve the density for laying hard-metal insert, and then strengthen the abrasive resistance of this gear ring.
Claims (10)
1. a kind of steel edge mixing cloth tooth roller drill bit, it includes at least one bit leg and gear wheel, and steel-tooth tooth is installed on gear wheel
Row, it is characterised in that：It is installed with hard-metal insert between at least tooth of row's steel-tooth on gear wheel, forms steel-tooth, inserted
Mix cloth tooth tooth row.
2. steel edge mixing cloth tooth roller drill bit according to claim 1, it is characterised in that：The mixing cloth tooth tooth row is installed
In the outer row or/and interior row of gear wheel.
3. steel edge mixing cloth tooth roller drill bit according to claim 1, it is characterised in that：One or one are provided with gear wheel
Mixing cloth tooth tooth row more than individual.
4. steel edge mixing cloth tooth roller drill bit according to claim 1 or 2, it is characterised in that：The mixing cloth tooth tooth row
Two adjacent steel-tooth teeth between be laid with the hard-metal insert of one or more than one.
5. steel edge mixing cloth tooth roller drill bit according to claim 1 or 2, it is characterised in that：The mixing cloth tooth tooth row
In the proud exposure of steel-tooth tooth be more than or equal to the proud exposure of this tooth row hard-metal insert, proud exposure difference 0~
Between 10mm.
6. steel edge mixing cloth tooth roller drill bit according to claim 1 or 2, it is characterised in that：In the steel-tooth tooth row
Tooth uses one of which structure or two kinds of structure arrangements in straight steel-tooth, oblique steel-tooth.
7. steel edge mixing cloth tooth roller drill bit according to claim 6, it is characterised in that：The straight steel-tooth and gear wheel axis
Angle is 0 °, oblique steel-tooth and roller axle line one tilt angle alpha of formation.
8. steel edge mixing cloth tooth roller drill bit according to claim 7, it is characterised in that：α span be 15 °~
45°。
9. steel edge mixing cloth tooth roller drill bit according to claim 1 or 2, it is characterised in that：The table of the steel-tooth tooth
Face is provided with wear-resisting surfacing layer, and the wear-resisting surfacing layer is wraps wear-resisting surfacing layer or partly wrap wear-resisting surfacing layer entirely.
10. steel edge mixing cloth tooth roller drill bit according to claim 1 or 2, it is characterised in that：The mixing cloth tooth tooth row
The span of middle hard alloy tooth diameter is 4~50mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621481466.9U CN206429197U (en) | 2016-12-30 | 2016-12-30 | A kind of steel edge mixing cloth tooth roller drill bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621481466.9U CN206429197U (en) | 2016-12-30 | 2016-12-30 | A kind of steel edge mixing cloth tooth roller drill bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206429197U true CN206429197U (en) | 2017-08-22 |
Family
ID=59585907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621481466.9U Active CN206429197U (en) | 2016-12-30 | 2016-12-30 | A kind of steel edge mixing cloth tooth roller drill bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206429197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117967202A (en) * | 2024-03-29 | 2024-05-03 | 西南石油大学 | Tricone steel inlaid hybrid drill bit |
-
2016
- 2016-12-30 CN CN201621481466.9U patent/CN206429197U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117967202A (en) * | 2024-03-29 | 2024-05-03 | 西南石油大学 | Tricone steel inlaid hybrid drill bit |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180408 Address after: 430223, No. 5, Chinese workers' garden, Temple Hill community, East Lake New Technology Development Zone, Wuhan, Hubei Co-patentee after: SINOPEC OILFIELD EQUIPMENT CORPORATION Patentee after: Kingdream Sinopec Petroleum Machinery Co. Ltd. Address before: 430223 Hubei city of Wuhan province science and Technology Park East Lake New Technology Development Zone, Road No. five Patentee before: Sinopec petroleum machinery Limited by Share Ltd Kingdream branch |