CN207393125U - A kind of PDC drill bit with fabricated structure - Google Patents
A kind of PDC drill bit with fabricated structure Download PDFInfo
- Publication number
- CN207393125U CN207393125U CN201721215420.7U CN201721215420U CN207393125U CN 207393125 U CN207393125 U CN 207393125U CN 201721215420 U CN201721215420 U CN 201721215420U CN 207393125 U CN207393125 U CN 207393125U
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- China
- Prior art keywords
- footpath
- drill bit
- block
- rule
- drill
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Abstract
The utility model discloses a kind of PDC drill bits with fabricated structure.Including wing, PDC teeth, rule footpath and drill body, bit gauge footpath portion is fixed with removably advises footpath block made of cemented carbide material, rule footpath block is fixed by screws on drill body, in screw head insertion rule footpath block mounting hole, the mounting surface of rule footpath block and drill body is provided with for the fixed step of positioning with drill body matching grooves, is advised and is provided with back reaming tooth on the block of footpath.Rule footpath component easy to wear is set back reaming tooth by the utility model drill bit using detachable structure, and detachably advising on the block of footpath, make drill bit structure easy to wear that can be convenient for changing, and greatly reduces use cost of the drillng operation construction to drill bit.The utility model structure can reduce the design of drill bit producer, manufacture, rehabilitation cost, advise footpath by replacing, reduce the time of drill bit reparation, while decrease the probability that drill bit is scrapped due to the abrasion of rule footpath.Drillng operation efficiency is improved, has saved drilling cost.
Description
Technical field
The utility model belongs to drill bit design and manufacturing technology field, especially belongs to a kind of oil, geology is bored with rotary drilling
The design and manufacturing technology of head, the more particularly to a kind of dismountable combined type PDC drill bit structure of rule footpath section.
Background technology
At present, the rotary drilling drill bit including PDC teeth as cutting tooth is widely used in fields such as oil, geology, it is this kind of
Drill bit abbreviation PDC drill bit.PDC drill bit has many advantages, such as rate of penetration height, footage per bit long lifespan.In drillng operation is carried out,
Particularly in the drilling process of directional well orientation section, the abrasion to PDC drill bit rule footpath section is bigger.Advise footpath section abrasion meeting
Wellbore is caused the consequences such as to become smaller, at this moment, it is necessary to the drill bit more renewed.And the old drill bit changed, if rule footpath wear extent
Less, then surfacing is taken, Vehicle Processing rule footpath reaches given size again；If abrasion is larger, only drill bit is scrapped.Either
Reparation is still scrapped, and can all increase drilling cost.Therefore, a kind of PDC with fabricated structure that is more reasonable, more saving is studied
Drill bit is to provide drilling efficiency, the effective ways for reducing cost.
The content of the invention
Deficiency discloses a kind of PDC drill bit with fabricated structure to the utility model according to prior art.This practicality
It is new to solve the problems, such as being exactly to design a kind of combined type PDC drill bit of detachable rule footpath section, it reduces and repairs drill bit or even replacement
The cost of new drill bit.
The utility model is achieved through the following technical solutions：
PDC drill bit with fabricated structure, including wing, PDC teeth, rule footpath and drill body, it is characterised in that：It is described
Bit gauge footpath portion is fixed with removably advises footpath block made of cemented carbide material.
The rule footpath block is fixed by screws on drill body, in screw head insertion rule footpath block mounting hole.
The mounting surface of the rule footpath block and drill body is provided with fixed for the positioning with drill body matching grooves
Step.
Back reaming tooth is provided on the rule footpath block.
The shape of the wing can be the straight knife wing or spiral shape wing.
After use, if the abrasion of bit gauge footpath is more than requirement, only abrasion need to be made of cemented carbide material for drill bit
Rule footpath block remove, change new rule footpath block, can reduce time and the cost of drill bit reparation, reduce the probability that drill bit is scrapped.
Back reaming tooth is arranged on rule footpath block by the utility model, and back reaming tooth is usually fixed by welding in rule footpath block
On, rule footpath block, which is connected by screw, to be fixed on drill body, and radial cutting force is by advising the platform on footpath block and drill body
Terrace is transferred on drill body.
Drill body can be matrix drill bits or steel body bit.
For matrix drill bits, in sintering, replaced using with advising the graphite replacement block of footpath block corresponding construction and the graphite of screw
It is made for block.During sintering, by the graphite replacement block for advising footpath block and screw and counterdie, impregnate set, connection ring etc. and combine, and
It is fixed.After the completion of sintering, remove.Finally the rule footpath block processed is linked together with drill body with screw.
For steel body bit, the mounting groove of rule footpath block is first processed in bit gauge path position, is then drilled on mounting groove
And screw thread is processed, finally the rule footpath block processed is linked together with drill body with screw.
The utility model can be applied on the drill bit of various sizes, can also apply to coring bit.
Compared with prior art, the utility model has an advantageous effect in that：
The utility model drill bit sets rule footpath component easy to wear using detachable structure, and detachably advising on the block of footpath
Back reaming tooth makes drill bit structure easy to wear that can be convenient for changing, and greatly reduces use cost of the drillng operation construction to drill bit.This
Utility model combining structure is stable and firm, convenient disassembly.The utility model structure can reduce drill bit producer and design, manufactures, repair
Multiple cost.Footpath is advised by replacing, reduces the time of drill bit reparation, while decreases drill bit and is scrapped due to the abrasion of rule footpath
Probability.Drillng operation efficiency is improved, has saved drilling cost.
Description of the drawings
Fig. 1 is the utility model combination type drill bit structure diagram；
Fig. 2 is the utility model bit gauge footpath block positive structure schematic；
Fig. 3 is the utility model bit gauge footpath block structure schematic diagram；
Fig. 4 is the utility model bit gauge footpath block cross-sectional structure schematic diagram, i.e. Fig. 3 AA faces structure diagram；
Fig. 5 is the utility model bit gauge footpath block scheme of installation.
In figure, 1 is drill body, and 2 be rule footpath block, and 3 be mounting hole, and 4 be back reaming tooth, and 5 be step, and 6 be screw.
Specific embodiment
The utility model is specifically described below by embodiment, the present embodiment be served only for the utility model into
Row further instruction, but it is not intended that limitation to scope of protection of the utility model, those skilled in the art is according to upper
State the scope that some nonessential modifications and adaptations that the content of the utility model is made fall within the utility model protection.
With reference to attached drawing.
PDC drill bit with fabricated structure, including wing, PDC teeth, rule footpath and drill body 1, bit gauge footpath portion is fixed
Have and footpath block 2 is removably advised made of cemented carbide material.
Rule footpath block 2 is fixed on by screw 6 on drill body 1, in 6 head of screw insertion rule 2 mounting hole 3 of footpath block.
Rule footpath block 2 and the mounting surface of drill body 1 are provided with for fixed of the positioning with drill body matching grooves
Rank 5.
Back reaming tooth 4 is provided on rule footpath block 2.Back reaming tooth 4 is usually fixed by welding on rule footpath block 2, advises footpath block 2
It is fastened on by screw 6 on drill body 1, radial cutting force is passed by advising the step surface on footpath block 2 and drill body 1
It is delivered on drill body 1.
The blade contour of the utility model drill bit can be that the straight knife wing can also be spiral shape wing.
After use, if the abrasion of bit gauge footpath is more than requirement, only abrasion need to be made of cemented carbide material for drill bit
Rule footpath block 2 remove, change new rule footpath block 2, can reduce time and the cost of drill bit reparation, reduce the probability that drill bit is scrapped.
The utility model drill body 1 can be matrix drill bits or steel body bit.
For matrix drill bits, in sintering, replaced using with advising the graphite replacement block of 2 corresponding construction of footpath block and the graphite of screw
It is made for block.During sintering, by the graphite replacement block for advising footpath block 2 and screw 6 and counterdie, impregnate set, connection ring etc. and combine,
It is and fixed.After the completion of sintering, remove.Finally the rule footpath block 2 processed is linked together with drill body 1 with screw 6.
For steel body bit, the mounting groove of rule footpath block 2 is first processed in bit gauge path position, is then drilled on mounting groove
And screw thread is processed, finally the rule footpath block 2 processed is linked together with drill body 1 with screw 6.
Claims (5)
1. a kind of PDC drill bit with fabricated structure, including wing, PDC teeth, rule footpath and drill body, it is characterised in that：Institute
It states bit gauge footpath portion and is fixed with the removably rule footpath block made of cemented carbide material.
2. the PDC drill bit according to claim 1 with fabricated structure, it is characterised in that：The rule footpath block passes through spiral shell
Nail is fixed on drill body, in screw head insertion rule footpath block mounting hole.
3. the PDC drill bit according to claim 1 with fabricated structure, it is characterised in that：The rule footpath block and drill bit
The mounting surface of body is provided with for the fixed step of positioning with drill body matching grooves.
4. according to the PDC drill bit with fabricated structure described in claim 1 or 2 or 3, it is characterised in that：The rule footpath block
On be provided with back reaming tooth.
5. the PDC drill bit according to claim 4 with fabricated structure, it is characterised in that：The shape of the wing is
The straight knife wing or spiral shape wing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721215420.7U CN207393125U (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit with fabricated structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721215420.7U CN207393125U (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit with fabricated structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207393125U true CN207393125U (en) | 2018-05-22 |
Family
ID=62403596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721215420.7U Active CN207393125U (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit with fabricated structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207393125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435521A (en) * | 2017-09-21 | 2017-12-05 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit with fabricated structure |
-
2017
- 2017-09-21 CN CN201721215420.7U patent/CN207393125U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107435521A (en) * | 2017-09-21 | 2017-12-05 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit with fabricated structure |
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| GR01 | Patent grant |