CN209724233U - A kind of geology PDC core bit - Google Patents
A kind of geology PDC core bit Download PDFInfo
- Publication number
- CN209724233U CN209724233U CN201821737372.2U CN201821737372U CN209724233U CN 209724233 U CN209724233 U CN 209724233U CN 201821737372 U CN201821737372 U CN 201821737372U CN 209724233 U CN209724233 U CN 209724233U
- Authority
- CN
- China
- Prior art keywords
- drill bit
- bit
- pdc
- drill
- cutting tooth
- 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.)
- Expired - Fee Related
Links
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 2
- 210000000515 tooth Anatomy 0.000 description 16
- 238000000034 method Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model belongs to geological drilling field more particularly to a kind of geology PDC core bit.The utility model includes drill main body and drill bit, it is characterised in that gauge piece is arranged in drill bit periphery interval, is provided with external flume between adjacent gauge piece；Interior sink is set inside the drill bit with external flume corresponding position；The top of the drill bit corresponds to gauge piece position setting PDC cutting tooth；The PDC cutting tooth is welded in cutting tooth support；Internal screw thread is set inside the drill main body；The internal screw thread is apart from drill bit about 10mm.The drill bit is applicable to soft~medium ground, and when work uses the low bit pressure of high revolving speed, and after cut odontotripsis, drill bit is scrapped, and since bit body is shorter, compared to conventional geology PDC core bit, is more saved material, is reduced the cost of drill bit.
Description
Technical field
The utility model relates to geological drilling field, specially a kind of geology PDC core bit.
Background technique
In geological drilling field, PDC drill bit is in drilling process, since formation drillability is poor, such as bores and meets interlayer, gravel layer
Or ground consisting of hard rock, PDC drill bit cutting tooth meeting Fast Wearing, and PDC drill bit was easy thermal acceleration cutting tooth in drilling process
Abrasion, once cutting tooth serious wear, then the PDC core bit is scrapped.General drilling operation team has a large amount of because cutting tooth is ground
The drill bit of damage is scrapped as waste disposal, and drill main body does not damage, and causes a large amount of waste in this way.
Utility model content
For the deficiency of above-mentioned existing geology PDC core bit, the utility model provides a kind of geology PDC column drill
Head.
Used technical solution is the utility model in order to solve the above problem:
A kind of geology PDC core bit, including drill main body and drill bit, it is characterised in that the drill bit periphery
Gauge piece is arranged in interval, is provided with external flume between adjacent gauge piece；It is set inside the drill bit with external flume corresponding position
Set interior sink；The top of the drill bit corresponds to gauge piece position setting PDC cutting tooth；The PDC cutting tooth, which is welded on, cuts
It cuts in tooth support；Internal screw thread is set inside the drill main body；The internal screw thread is apart from drill bit about 10mm.
Further, the gauge piece is hard alloy, is welded on drill bit.
Further, the drill bit can have 10~12 equally distributed PDC cutting tooths.
The beneficial effects of the utility model are: geology PDC core bit main body is shorter, principal length is conventional geology
The half of PDC core bit principal length after drill bit is scrapped, can save raw material；Composite sheet supporting body structure is small, is convenient for cloth
More cutting tooths are set, and form the biggish cross-section of river, to slow down abrasion to the cooling effect that cutting tooth has been brought.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Wherein: 1-PDC cutting tooth；The support of 2- cutting tooth；Sink in 3-；4- external flume；5- drill main body；6- gauge piece；
7- internal screw thread.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
Referring to Fig.1, the utility model is cylindrical in shape, and is two-part structure, and front end is drill bit, and rear end is drill main body
5, the drill bit diameter is slightly larger than 5 diameter of drill main body；Gauge piece 6, adjacent guarantor is arranged in drill bit periphery interval
External flume 4 is provided between diameter piece 6；Interior sink 3 is set inside the drill bit with 4 corresponding position of external flume；The drill bit
The top of bizet corresponds to 6 position of gauge piece setting PDC cutting tooth 1；The PDC cutting tooth 1 is welded in cutting tooth support 2；Institute
State setting internal screw thread 7 inside drill main body 5.
The gauge piece 6 is hard alloy, is welded on drill bit.
The internal screw thread 7 is apart from drill bit about 10mm.
The PDC cutting tooth 1 is evenly distributed on drill bit, preferably 10~12.
This PDC core bit is coupled by internal screw thread 7 with drilling rod, and bit pressure and torsion are passed to PDC core bit by drilling rod,
Bit cuts stratum, and drilling fluid is flowed downward out by annular space in drill bit, and suspension landwaste, cutting carring is returned by sink
Go back to ground.The drill bit is applicable to soft~medium ground, and when work uses the low bit pressure of high revolving speed, after PDC cuts odontotripsis, bores
Head is scrapped, and since bit body is shorter, compared to conventional geology PDC core bit, more saving material, reduces drill bit
Cost.
Foregoing description is only the description to the utility model preferred embodiment, not to any limit of the scope of the utility model
Fixed, any change, the modification that the those of ordinary skill in the utility model field does according to the disclosure above content belong to right and want
Seek the protection scope of book.
The content that this specification is not described in detail belongs to the prior art well known to professional and technical personnel in the field.
Claims (3)
1. a kind of geology PDC core bit, including drill main body (5) and drill bit, it is characterised in that: the drill bit week
It is intermarginal to be provided with external flume (4) between setting gauge piece (6), adjacent gauge piece (6)；The drill bit inside and external flume
(4) interior sink (3) is arranged in corresponding position；The top of the drill bit corresponds to gauge piece (6) position setting PDC cutting tooth (1)；
The PDC cutting tooth (1) is welded in cutting tooth support (2)；Internal screw thread (7) are set inside the drill main body (5)；In described
Screw thread (7) is apart from drill bit about 10mm.
2. a kind of geology PDC core bit according to claim 1, it is characterised in that: the gauge piece (6) is hard conjunction
Gold is welded on drill bit.
3. a kind of geology PDC core bit according to claim 1 or 2, it is characterised in that: the drill bit can have 10~12
Equally distributed PDC cutting tooth (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821737372.2U CN209724233U (en) | 2018-10-25 | 2018-10-25 | A kind of geology PDC core bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821737372.2U CN209724233U (en) | 2018-10-25 | 2018-10-25 | A kind of geology PDC core bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209724233U true CN209724233U (en) | 2019-12-03 |
Family
ID=68672192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821737372.2U Expired - Fee Related CN209724233U (en) | 2018-10-25 | 2018-10-25 | A kind of geology PDC core bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209724233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302541A (en) * | 2020-10-29 | 2021-02-02 | 长江大学 | A matrix PDC coring bit that is arranged in hard and above homogeneity stratum |
-
2018
- 2018-10-25 CN CN201821737372.2U patent/CN209724233U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112302541A (en) * | 2020-10-29 | 2021-02-02 | 长江大学 | A matrix PDC coring bit that is arranged in hard and above homogeneity stratum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 |