CN206903593U - A kind of novel wear resistant block gage protecting bit - Google Patents
A kind of novel wear resistant block gage protecting bit Download PDFInfo
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- CN206903593U CN206903593U CN201720883899.5U CN201720883899U CN206903593U CN 206903593 U CN206903593 U CN 206903593U CN 201720883899 U CN201720883899 U CN 201720883899U CN 206903593 U CN206903593 U CN 206903593U
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Abstract
The utility model discloses a kind of novel wear resistant block gage protecting bit, gauge wall including drill bit, at least three wear-resistant blocks are mounted on the wall of the gauge wall, and the wear-resistant block on each gauge wall is arranged in same level, the area of wear-resistant block accounts for the area more than 80% of the gauge wall.The wearability of Special wear-resistant block of the present utility model is strong and the wear-resisting area of formation is big, service life length, reduces the consumption of bit change in drilling process, improves drilling efficiency, its manufacturing cost is lower than PDC composite sheet；After bit gauge protection outside diameter abrasion of the present utility model is less than the size allowed, drill bit, which is not scrapped, can repair as new；Most thick Special wear-resistant block on the utility model may be reused three times, and middle thick Special wear-resistant block may be reused twice, substantially just more save material, reduce drill bit manufacturing cost.
Description
Technical field
It the utility model is related to a kind of oil drilling tool, and in particular to a kind of novel wear resistant block gage protecting bit.
Background technology
In petroleum geology drilling project, the gauge wall diameter of drill bit is an important factor for determining drilling well well size.For
Guarantee gauge wall is injury-free in drilling process, it is desirable to which gauge wall has shock resistance, anti abrasive ability.Particularly boring
During directional inclination well, drill bit side will bear the huge pressure of the borehole wall, and its impact resistance and wearability require higher.Present work
On the bit gauge protection wall used in journey, often with tungsten carbide button's block, heat-stabilised poly crystal block, arc PDC composite sheets and cylinder
The measures such as shape PDC composite sheet deburring teeth strengthen gauge wearability and raising gauge impact resistance, its structure and performance to reach
Effect is compared as follows：
1. tungsten carbide button's block, as shown in figure 1, its cost price is low, but abrasive resistance is limited, can not be repaiied after abrasion
It is multiple, and the wear-resisting area formed is little.
2. inlaying heat-stabilised poly crystal block, as shown in Fig. 2 its wearability is higher than hard alloy, but impact resistance is poor, and
The wear-resisting area formed is also little, can not be repaired after damage.
3. inlaying arc PDC composite sheets, as shown in figure 3, PDC composite piece wear-resistance performances are higher, can pass through after damage
Tooth is changed to be repaired, but PDC composite sheet costs are very high, and impact resistance is limited.
4. inlaying PDC deburring teeth, PDC composite piece wear-resistance abilities are strong, but impact resistance is limited, compound as deburring tooth
Piece diamond layer is subjected to impact load and easily burst apart, therefore restricted lifetime.
In summary, these measure effects used in present oil drilling engineering are unsatisfactory, many drill bits be all because
Worn for gauge, diameter, which diminishes, can not repair and scrap.
Utility model content
Technical problem to be solved in the utility model be existing bit gauge protection wall wearability and impact resistance it is poor, and
And repaired after wearing difficult, it is impossible to meet the requirement of oil drilling engineering, its object is to provide a kind of novel wear resistant block gauge
Drill bit, the gage protecting bit increase wear-resisting area and improve its wearability, extend drilling life of bit and improve drilling efficiency, and
Wear-resistant block can be interchangeable reparation so as to reduce drilling cost.
The utility model is achieved through the following technical solutions：
A kind of novel wear resistant block gage protecting bit, include the gauge wall of drill bit, be mounted on the wall of the gauge wall to
Few three wear-resistant blocks, from the side surface direction vertical with drill axis, and the wear-resistant block on each gauge wall is arranged at together
In one horizontal plane, the area of wear-resistant block accounts for the area more than 80% of the gauge wall.When drill bit carries out drilling well at present, in order to ensure
Footpath wall is injury-free in drilling process, it is desirable to which gauge wall has shock resistance, anti abrasive ability.So in bit gauge protection wall
On, often arranged with tungsten carbide button's block, heat-stabilised poly crystal block, arc PDC composite sheets and cylindrical PDC composite sheets deburring tooth etc.
Apply reach strengthen gauge wearability and improve gauge impact resistance, and this use this several structure measure, always because
The factor such as repeat performance does not reach requirement and unsatisfactory after abrasive resistance, wear-resisting area, impact resistance, reparation, very
More drill bits are all that diameter, which diminishes, can not repair and scrap because gauge is worn.And this programme is then by being inlayed on gauge wall
At least three wear-resistant blocks are installed, while ensure that the area of wear-resistant block accounts for the area 80% of the gauge wall and increases above wear-resisting area,
The abrasive resistance of wear-resistant block is strong simultaneously, and impact resistance is high, can repeat to use and reduce cost after reparation, meet drilling well
It is required that.
In order to which wear-resistant block is embedded in gauge wall, at least three embedding grooves are recessed in the wall of gauge wall, and
Every wear-resistant block is correspondingly arranged in a wherein embedding groove, and the bar number of embedding groove is at least three, could so form drilling well
When gauge wall is effectively protected, and the bar number of the embedding groove on drill bit on each gauge wall is three or four,
Its groove depth is set gradually along bit direction from shallow to deep.
Be 3mm by the distance between embedding groove adjacent in embedding groove according to the width of gauge wall, embedding groove with along brill
The side wall distance of the hithermost gauge wall in head direction of rotation is 3mm.In drilling well, can by wear-resistant block maximize and full out with
The borehole wall contacts, and reduces gauge wall and is contacted with the direct of the borehole wall.
Further, the groove depth of inlaying on gauge wall is respectively 5mm, 6.5mm and 8mm, and its groove depth is along bit
Direction is set gradually from shallow to deep.Accordingly, the thick wear-resistant blocks of 7mm are installed in embedding groove deep 5mm, 6.5mm is deep to be inlayed
8.5mm thick wear-resistant blocks are installed in groove, 10mm thick wear-resistant blocks are installed in embedding groove deep 8mm, wear-resistant block is formed and protrudes from guarantor
The wall thickness of footpath wall is 2mm so that end face of the wear-resistant block away from gauge wall on gauge wall is arranged in same periphery.
So when carrying out drilling well, all wear-resistant blocks can be contacted with the borehole wall, ensure that the size of wellhole.
The utility model compared with prior art, has the following advantages and advantages：
1. the wearability of Special wear-resistant block of the present utility model is strong and the wear-resisting area of formation is big, service life length, subtract
The consumption of bit change, improves drilling efficiency in few drilling process, and its manufacturing cost is lower than PDC composite sheet；
After 2. bit gauge protection outside diameter abrasion of the present utility model is less than the size allowed, drill bit, which is not scrapped, to be repaired
As newly；
3. the most thick Special wear-resistant block on the utility model may be reused three times, middle thick Special wear-resistant block can repeat
Using material twice, is substantially just more saved, drill bit manufacturing cost is reduced.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed.In the accompanying drawings：
Fig. 1 is the structural representation that hard alloy blocks and deburring tooth are installed on gauge wall；
Fig. 2 is the structural representation that heat-stabilised poly crystal block and deburring tooth are installed on gauge wall；
Fig. 3 is the structural representation that arc PDC composite sheets and deburring tooth are installed on gauge wall；
Fig. 4 structural representations of the present utility model；
Fig. 5 is Fig. 4 profile；
Fig. 6 is the structural representation that embedding groove is set；
Fig. 7 is the structural representation of wear-resistant block.
Mark and corresponding parts title in accompanying drawing：
1- gauge walls, 2- arc PDC composite sheets, 3- deburring teeth, 4- heat-stabilised poly crystal blocks, 5- hard alloy blocks, 6- inlay
Groove, 7- wear-resistant blocks.
Embodiment
For the purpose of this utility model, technical scheme and advantage is more clearly understood, with reference to embodiment and accompanying drawing,
The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this
Utility model, it is not intended as to restriction of the present utility model.
Embodiment 1：
As shown in Figures 1 to 7, a kind of novel wear resistant block gage protecting bit, the gauge wall 1 of drill bit is included, the gauge wall 1
At least three wear-resistant blocks 7 are mounted on wall, it is wear-resisting on each gauge wall 1 in terms of the horizontal line of sight direction of drill bit side
Block 7 is arranged in same level, i.e., wear-resistant block 7 is arranged on sustained height, and the area of wear-resistant block 7 accounts for the face of the gauge wall 1
Product more than 80%.The existing four kinds of structures set on gauge wall are arc PDC composite sheets 2, deburring tooth 3, heat-stabilised poly crystal block 4
With hard alloy blocks 5, although these structures can play a certain degree of well size and keep, on the whole, have all the time
The factor such as repeat performance, cost does not reach requirement and not to the utmost people after abrasive resistance, wear-resisting area, impact resistance, reparation
Meaning, especially these structures its to occupy the area of gauge wall 1 small, substantially in less than 40%, be divided into some small structures and inlay,
Not only complex procedures, the amount of labour is big, at the same cause with the borehole wall for point contact, the impact being individually subject to is big, at the same upon wear without
Method reparation or reparation are highly difficult, influence service life, can only scrap drill bit, increase cost.The structure of this programme design, is adopted
It is embedded in at least three wear-resistant blocks 7 on gauge wall 1, its entirety occupies the area more than 80% of gauge wall 1, contact area and resistance to
Flour milling product is bigger, and wear-resistant block 7 is made of high-abrasive material, and it has higher wearability, because footprint area is big, with borehole wall shape
Contacted into face, can effectively withstand shocks load, while can repair and be replaced after wearing, and increase the service life, reduce into
This.
Embodiment 2：
As shown in Figures 4 to 7, on the basis of embodiment 1, the wall of gauge wall 1 is recessed three embedding grooves 6,
Its groove depth is set gradually along bit direction from shallow to deep, and every wear-resistant block 7 is correspondingly arranged in an embedding groove 6.
The distance between adjacent embedding groove 6 is 3mm in embedding groove 6, embedding groove 6 with along the hithermost gauge wall in bit direction
1 side wall distance is 3mm.The depth of embedding groove 6 on gauge wall 1 is respectively 5mm, 6.5mm and 8mm, and its groove depth is revolved along drill bit
Turn direction to set gradually to deep from shallow.The length and width of groove is determined by bit gauge protection design size.Wear-resistant block 7 on gauge wall 1
End face away from gauge wall 1 is arranged in same periphery, and the wear-resistant block of three kinds of thickness is produced according to the depth of embedding groove 6
The thick wear-resistant block 7 in 7, respectively 7mm, 8.5mm and 10mm, wherein 7mm is arranged in the deep embedding grooves 6 of 5mm, thick resistance to of 8.5mm
Abrading block 7 is arranged in the deep embedding grooves 6 of 6.5mm, and wear-resistant block 7 thick 10mm is arranged in the deep embedding grooves 6 of 8mm, final wear-resisting
The wall thickness that block 7 protrudes from gauge wall 1 is 2mm.The width of wear-resistant block 7, length press bit gauge protection design size.Three kinds resistance to
The soldering form firm welding of abrading block 7, it is that bit gauge protection outside diameter reaches design requirement by cylindrical grinding process.
After drill bit long-term use, its gauge outside diameter is less than the size allowed, then its gauge can be repaired.
Its method is：
1. removed after three pieces of wear-resistant blocks heating after being worn on gauge wall；
2. the middle thick wear-resistant block after abrasion is welded in most shallow embedding groove 6；
3. the most thick wear-resistant block after abrasion is welded in middle deep embedding groove 6；
4. the new most thick wear-resistant block of non-experience wear is welded in most deep embedding groove 6；
5. cylindrical grinding again, making bit gauge protection outside diameter reach design requirement, realize and use effect with green bit identical
Fruit.
The wearability of wear-resistant block of the present utility model is strong and the wear-resisting area of formation is big, service life length, reduces drilling well
During bit change consumption, improve drilling efficiency, while its manufacturing cost is lower than PDC composite sheet.And bit gauge protection is cylindrical
After diameter abrasion is less than the size allowed, drill bit, which is not scrapped, can repair as new, and the most thick wear-resistant block on drill bit can repeat to make
With three times, middle thick wear-resistant block may be reused twice, simply change one piece of wear-resistant block when repairing every time on each gauge wall,
Material is substantially just more saved, reduces drill bit manufacturing cost.Sum up, the outstanding feature of this novel wear resistant block gage protecting bit
It is that service life is long, cost is low, drilling efficiency is high.
Embodiment 3：
On the basis of above-described embodiment, the quantity of embedding groove 6 and wear-resistant block 7 is four, and adjacent in embedding groove 6
The distance between embedding groove 6 be 3mm, embedding groove 6 with being along the side wall distance of the hithermost gauge wall 1 in bit direction
3mm, the wall thickness that wear-resistant block 7 protrudes from gauge wall 1 are still 2mm, and the length and width of groove presses bit gauge protection design size
Fixed, this structure also can extend drilling life of bit on the premise of well size is ensured.
Above-described embodiment, the purpose of this utility model, technical scheme and beneficial effect are entered
One step describes in detail, should be understood that and the foregoing is only specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, it is all within the spirit and principles of the utility model, any modification for being made, equally replace
Change, improve, should be included within the scope of protection of the utility model.
Claims (7)
1. a kind of novel wear resistant block gage protecting bit, include the gauge wall (1) of drill bit, it is characterised in that the wall of the gauge wall (1)
At least three wear-resistant blocks (7) are mounted on face, the wear-resistant block (7) along on each gauge wall (1) of drill axis vertical direction
It is arranged in same level, the area of wear-resistant block (7) accounts for the area more than 80% of the gauge wall (1).
A kind of 2. novel wear resistant block gage protecting bit according to claim 1, it is characterised in that the wall of the gauge wall (1)
Face is recessed at least three embedding grooves (6), and every wear-resistant block (7) is correspondingly arranged in an embedding groove (6).
A kind of 3. novel wear resistant block gage protecting bit according to claim 2, it is characterised in that phase in the embedding groove (6)
The distance between adjacent embedding groove (6) is 3mm, embedding groove (6) and the side along the hithermost gauge wall (1) in bit direction
Wall distance is 3mm.
4. a kind of novel wear resistant block gage protecting bit according to claim 2, it is characterised in that every in the gauge wall (1)
The bar number of embedding groove (6) on individual gauge wall (1) is three, and its groove depth is set successively along bit direction from shallow to deep
Put.
5. a kind of novel wear resistant block gage protecting bit according to claim 4, it is characterised in that on the gauge wall (1)
Embedding groove (6) depth is respectively 5mm, 6.5mm and 8mm, and its groove depth is set gradually along bit direction from shallow to deep.
6. a kind of novel wear resistant block gage protecting bit according to claim 1, it is characterised in that on the gauge wall (1)
End face of the wear-resistant block (7) away from gauge wall (1) is arranged in same periphery.
A kind of 7. novel wear resistant block gage protecting bit according to claim 6, it is characterised in that wear-resistant block (7) protrusion
In the wall thickness of gauge wall (1) be 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883899.5U CN206903593U (en) | 2017-07-20 | 2017-07-20 | A kind of novel wear resistant block gage protecting bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720883899.5U CN206903593U (en) | 2017-07-20 | 2017-07-20 | A kind of novel wear resistant block gage protecting bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206903593U true CN206903593U (en) | 2018-01-19 |
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ID=61312008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720883899.5U Active CN206903593U (en) | 2017-07-20 | 2017-07-20 | A kind of novel wear resistant block gage protecting bit |
Country Status (1)
| Country | Link |
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| CN (1) | CN206903593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270985A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit with variable diameter |
| CN112427642A (en) * | 2020-11-23 | 2021-03-02 | 湖北小蚂蚁金刚石工具有限公司 | Diamond pressing block with diameter protection function |
-
2017
- 2017-07-20 CN CN201720883899.5U patent/CN206903593U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111270985A (en) * | 2018-12-05 | 2020-06-12 | 武穴市金锐精密锻造有限公司 | Down-the-hole drill bit with variable diameter |
| CN112427642A (en) * | 2020-11-23 | 2021-03-02 | 湖北小蚂蚁金刚石工具有限公司 | Diamond pressing block with diameter protection function |
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