CN204139967U - Deflecting borehole-enlarging drilling tool - Google Patents
Deflecting borehole-enlarging drilling tool Download PDFInfo
- Publication number
- CN204139967U CN204139967U CN201420507418.7U CN201420507418U CN204139967U CN 204139967 U CN204139967 U CN 204139967U CN 201420507418 U CN201420507418 U CN 201420507418U CN 204139967 U CN204139967 U CN 204139967U
- Authority
- CN
- China
- Prior art keywords
- drilling tool
- drilling
- borehole
- deflecting
- drill bit
- 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
Abstract
The utility model relates to a kind of deflecting borehole-enlarging drilling tool, comprises drilling tool body, and described drilling tool body is comprised successively arrangement up and down and is connected by connecting rod between adjacent drill bit to little multiple drill bits from large, and drill bit is topmost connected by adapter sleeve and drilling rod.The utility model, when drilling, because drill bit is bottom less, if when running into hard stratum point, it can carry out skew break-in, is avoided the hard point in stratum, is tried to avert accidents, and avoids bit damage and drilling rod distortion, improves functional reliability and safety.
Description
Technical field
The utility model relates to geological prospecting apparatus field, particularly relates to the drilling rod of rig.
Background technology
Drilling rod is the critical component in rig, and its end connects drilling tool.In prior art, drilling tool is that single form is assemblied on drilling rod, during work drilling tool follow drilling rod rotate the rock of underground is rubbed, realize drilling through.The defect that this drilling tool exists is: when touching hard lithostratigraphy, underground, because the diameter of drilling tool is larger, firm hard formation point can not be offset, can only force that rubbing is carried out to it and drill through, it exists, and drill bit is fragile, drilling rod is yielding, drill through the not high shortcoming of efficiency.
Utility model content
The shortcoming that the applicant exists for above-mentioned prior art, carries out studying and improving, and provides a kind of and can depart from firm hard formation point, drills through that efficiency is high, the deflecting borehole-enlarging drilling tool of reliable operation.
The technical scheme that the utility model adopts is as follows:
A kind of deflecting borehole-enlarging drilling tool, comprises drilling tool body, and described drilling tool body is comprised successively arrangement up and down and is connected by connecting rod between adjacent drill bit to little multiple drill bits from large, and drill bit is topmost connected by adapter sleeve and drilling rod.
Further improvement as technique scheme:
Described drilling tool body at least comprises 3 drill bits.
The diameter of described connecting rod reduces from top to bottom successively.
The beneficial effects of the utility model are as follows:
The utility model, when drilling, because drill bit is bottom less, if when running into hard stratum point, it can carry out skew break-in, is avoided the hard point in stratum, is tried to avert accidents, and avoids bit damage and drilling rod distortion, improves functional reliability and safety.
Accompanying drawing explanation
Fig. 1 is three-dimensional structure diagram of the present utility model.
Fig. 2 is front view of the present utility model.
In figure: 1, drill bit; 2, connecting rod; 3, adapter sleeve.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described.
As shown in Figures 1 and 2, the deflecting borehole-enlarging drilling tool of the present embodiment, comprises drilling tool body, drilling tool body comprise successively up and down arrangement and from large to little multiple drill bits 1, be connected by connecting rod 2 between adjacent drill bit 1, drill bit 1 is topmost connected by adapter sleeve 3 and drilling rod.
Drilling tool body at least comprises 3 drill bits 1, and the diameter of the connecting rod 2 between drill bit 1 reduces from top to bottom successively.
The utility model, when drilling, because drill bit is bottom less, if when running into hard stratum point, it can carry out skew break-in, is avoided the hard point in stratum, is tried to avert accidents, and avoids bit damage and drilling rod distortion, improves functional reliability and safety.
More than describing is to explanation of the present utility model, and be not the restriction to utility model, the utility model limited range is see claim, and when without prejudice to spirit of the present utility model, the utility model can do any type of amendment.
Claims (3)
1. a deflecting borehole-enlarging drilling tool, comprise drilling tool body, it is characterized in that: described drilling tool body comprise successively up and down arrangement and from large to little multiple drill bits (1), be connected by connecting rod (2) between adjacent drill bit (1), drill bit (1) is topmost connected by adapter sleeve (3) and drilling rod.
2. according to deflecting borehole-enlarging drilling tool described in claim 1, it is characterized in that: described drilling tool body (1) at least comprises 3 drill bits (1).
3. according to deflecting borehole-enlarging drilling tool described in claim 1, it is characterized in that: the diameter of described connecting rod (2) reduces from top to bottom successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420507418.7U CN204139967U (en) | 2014-09-03 | 2014-09-03 | Deflecting borehole-enlarging drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420507418.7U CN204139967U (en) | 2014-09-03 | 2014-09-03 | Deflecting borehole-enlarging drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204139967U true CN204139967U (en) | 2015-02-04 |
Family
ID=52416660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420507418.7U Expired - Fee Related CN204139967U (en) | 2014-09-03 | 2014-09-03 | Deflecting borehole-enlarging drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204139967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196454A (en) * | 2014-09-03 | 2014-12-10 | 无锡中地地质装备有限公司 | Deflecting and counterboring drilling tool |
-
2014
- 2014-09-03 CN CN201420507418.7U patent/CN204139967U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196454A (en) * | 2014-09-03 | 2014-12-10 | 无锡中地地质装备有限公司 | Deflecting and counterboring drilling tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20150903 |
|
| EXPY | Termination of patent right or utility model |