CN107435521A - A kind of PDC drill bit with fabricated structure - Google Patents
A kind of PDC drill bit with fabricated structure Download PDFInfo
- Publication number
- CN107435521A CN107435521A CN201710859256.1A CN201710859256A CN107435521A CN 107435521 A CN107435521 A CN 107435521A CN 201710859256 A CN201710859256 A CN 201710859256A CN 107435521 A CN107435521 A CN 107435521A
- Authority
- CN
- China
- Prior art keywords
- drill bit
- footpath
- block
- rule
- drill
- 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.)
- Pending
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
- E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
- E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable
Abstract
The invention discloses a kind of PDC drill bit 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 Hardmetal materials, 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 step fixed with the positioning of drill body matching grooves, is advised and is provided with back reaming tooth on the block of footpath.Rule footpath part easy to wear is used demountable structure by drill bit of the present invention, and is detachably setting back reaming tooth on rule footpath block, drill bit structure easy to wear is convenient for changing, is greatly reduced use cost of the drillng operation construction to drill bit.Structure of the present invention can reduce the design of drill bit producer, manufacture, rehabilitation cost, advise footpath by changing, 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 invention belongs to drill bit design and manufacturing technology field, a kind of oil, geology rotary drilling drill bit are especially belonged to
Design and manufacturing technology, more particularly to a kind of rule dismountable combined type PDC drill bit structure of 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 the advantages that rate of penetration is high, footage per bit long lifespan.In drillng operation is carried out,
Particularly in the drilling process of directional well orientation section, the abrasion that footpath section is advised to PDC drill bit is bigger.Advise the abrasion meeting of footpath section
Well is caused the consequence such as to diminish, 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, reduces the effective ways of cost.
The content of the invention
The present invention discloses a kind of PDC drill bit with fabricated structure according to the deficiencies in the prior art.The present invention will solve
Certainly the problem of is exactly to design a kind of combined type PDC drill bit of detachable rule footpath section, reduces the drill bit repaired drill bit or even more renewed
Cost.
The present invention 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 Hardmetal materials.
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 with the rule footpath block.
The shape of the wing can be the straight knife wing or spiral shape wing.
Drill bit after use, is required if the abrasion of bit gauge footpath exceedes, and only abrasion need to be made of Hardmetal materials
Rule footpath block pull down, 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 present invention, and back reaming tooth is generally fixed by welding on rule footpath block, rule
Footpath block, which is connected by screw, to be fixed on drill body, and radial cutting force is passed by advising the step surface on footpath block and drill body
It is delivered 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
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 invention can be applied on the drill bit of various sizes, can also apply to coring bit.
Compared with prior art, the invention has the advantages that：
Rule footpath part easy to wear is used demountable structure by drill bit of the present invention, and is detachably setting back water on rule footpath block
Eye tooth, makes drill bit structure easy to wear to be convenient for changing, and greatly reduces use cost of the drillng operation construction to drill bit.The present invention
Combining structure is stable and firm, convenient disassembly.Structure of the present invention can reduce the design of drill bit producer, manufacture, rehabilitation cost.By more
Rule footpath is changed, reduces the time of drill bit reparation, while decreases the probability that drill bit is scrapped due to the abrasion of rule footpath.Improve brill
Well operations efficiency, has saved drilling cost.
Brief description of the drawings
Fig. 1 is combination type drill bit structural representation of the present invention；
Fig. 2 is bit gauge footpath block positive structure schematic of the present invention；
Fig. 3 is bit gauge footpath block structure schematic diagram of the present invention；
Fig. 4 is block cross-sectional structure schematic diagram in bit gauge footpath of the present invention, i.e. Fig. 3 AA faces structural representation；
Fig. 5 is bit gauge footpath block scheme of installation of the present invention.
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.
Embodiment
The present invention is specifically described below by embodiment, the present embodiment is served only for carrying out further the present invention
Explanation, but it is not intended that limiting the scope of the invention, those skilled in the art is according in the invention described above
Hold some the nonessential modifications and adaptations made and fall within the scope of protection of the invention.
With reference to accompanying 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 Hardmetal materials.
Rule footpath block 2 is fixed on drill body 1 by screw 6, in the head of the screw 6 insertion rule mounting hole 3 of footpath block 2.
The mounting surface of rule footpath block 2 and drill body 1 is provided with for the platform fixed with the positioning of drill body matching grooves
Rank 5.
Back reaming tooth 4 is provided with rule footpath block 2.Back reaming tooth 4 is generally 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 drill bit of the present invention can be that the straight knife wing can also be spiral shape wing.
Drill bit after use, is required if the abrasion of bit gauge footpath exceedes, and only abrasion need to be made of Hardmetal materials
Rule footpath block 2 pull down, change new rule footpath block 2, can reduce time and the cost of drill bit reparation, reduce the probability that drill bit is scrapped.
Drill body 1 of the present invention can be matrix drill bits or steel body bit.
For matrix drill bits, in sintering, replaced using with advising the graphite replacement block of the corresponding construction of footpath block 2 and the graphite of screw
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
State bit gauge footpath portion and be fixed with the removably rule footpath block made of Hardmetal materials.
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 step fixed with the positioning of 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 |
|---|---|---|---|
| CN201710859256.1A CN107435521A (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 |
|---|---|---|---|
| CN201710859256.1A CN107435521A (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit with fabricated structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107435521A true CN107435521A (en) | 2017-12-05 |
Family
ID=60461752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710859256.1A Pending CN107435521A (en) | 2017-09-21 | 2017-09-21 | A kind of PDC drill bit with fabricated structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107435521A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611572Y (en) * | 2003-03-21 | 2004-04-14 | 袁啟法 | Combined rock drill |
| CN201810216U (en) * | 2010-10-15 | 2011-04-27 | 四川川石金刚石钻头有限公司 | Low-friction-resistance drilling bit |
| CN205558817U (en) * | 2016-05-06 | 2016-09-07 | 河北金曼金刚石钻头科技发展有限公司 | Detachable type drill |
| CN106320991A (en) * | 2016-08-30 | 2017-01-11 | 宝鸡石油机械有限责任公司 | Combined gauge protection polycrystalline diamond compact bit |
| CN205895150U (en) * | 2016-07-21 | 2017-01-18 | 四川川石金刚石钻头有限公司 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
| CN206190233U (en) * | 2016-11-24 | 2017-05-24 | 成都保瑞特钻头有限公司 | It is detachable along with boring reaming hole stabilizer |
| CN207393125U (en) * | 2017-09-21 | 2018-05-22 | 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 CN201710859256.1A patent/CN107435521A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2611572Y (en) * | 2003-03-21 | 2004-04-14 | 袁啟法 | Combined rock drill |
| CN201810216U (en) * | 2010-10-15 | 2011-04-27 | 四川川石金刚石钻头有限公司 | Low-friction-resistance drilling bit |
| CN205558817U (en) * | 2016-05-06 | 2016-09-07 | 河北金曼金刚石钻头科技发展有限公司 | Detachable type drill |
| CN205895150U (en) * | 2016-07-21 | 2017-01-18 | 四川川石金刚石钻头有限公司 | Diversified PDC drill bit that back row tooth can wholly be dismantled |
| CN106320991A (en) * | 2016-08-30 | 2017-01-11 | 宝鸡石油机械有限责任公司 | Combined gauge protection polycrystalline diamond compact bit |
| CN206190233U (en) * | 2016-11-24 | 2017-05-24 | 成都保瑞特钻头有限公司 | It is detachable along with boring reaming hole stabilizer |
| CN207393125U (en) * | 2017-09-21 | 2018-05-22 | 四川川石金刚石钻头有限公司 | A kind of PDC drill bit with fabricated structure |
Non-Patent Citations (2)
| Title |
|---|
| 刘卫东等: "《钻探工程技术实训(下)》", 30 September 2015, 四川大学出版社 * |
| 卢予北等: "《地热矿泉水资源勘查手册》", 30 September 2007, 黄河水利出版社 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171205 |
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| RJ01 | Rejection of invention patent application after publication |