CN203463014U - Drillable slim-hole reaming guide cone - Google Patents
Drillable slim-hole reaming guide cone Download PDFInfo
- Publication number
- CN203463014U CN203463014U CN201320500482.8U CN201320500482U CN203463014U CN 203463014 U CN203463014 U CN 203463014U CN 201320500482 U CN201320500482 U CN 201320500482U CN 203463014 U CN203463014 U CN 203463014U
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- CN
- China
- Prior art keywords
- slim
- hole
- guide cone
- drillable
- reaming
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to an oil filed side slim-hole well drilling and reaming tool, in particular to a drillable slim-hole reaming guide cone. A plurality of milling edges are arranged at the outer side of the lower end of a body of the tool, the front sides and the inner sides of the milling edges are respectively embedded with polycrystalline diamond composite sheets, the lower part of the body is provided with a plurality of spiral grooves with 60-degree lead angles, water holes are embedded in each spiral groove, and the lower end of the body is provided with a lower body water hole. The drillable slim-hole reaming guide cone realizes the effects that the drilling fluid circulation smoothness can be improved, the mud drum and water hole blockage is prevented, the smooth guide can be realized at the sand bridge section, and the effects of fast drilling and accident prevention can be realized. The drillable slim-hole reaming guide cone overcomes the defect that in the operation process of the existing reaming guide cone, the mud drum and water hole blockage phenomenon often occurs, so the guide cone cannot be guided to pass a sand bridge.
Description
Technical field:
The utility model relates to the side tracked slim hole drilling well of a kind of oil field and reaming tool, particularly a kind of drillable slim-hole reaming leading cone.
Background technology:
Along with the continuous increase of sidetracked hole application scale, side tracked slim hole counter-boring techniques has also obtained lasting improvement and development, has guaranteed raising and the life-time dilatation of oil well cementing quality, makes oil field obtain good economic benefit.But in diameter 139.7mm sleeve pipe, use in the slim hole well of diameter 118mm drill bit window sidetracking and carry out reaming, the conventional reaming leading cone using is because hydrophthalmia design is unreasonable, body construction does not have drillability, the phenomenon that often generation mud drum, hydrophthalmia block, leading cone cannot be guided through sand bridge, cause the accidents such as pump pressure rising, bit freezing, affect carrying out smoothly of drilling well, and the security presence hidden danger to work progress.
Utility model content:
The technical problems to be solved in the utility model is to provide a kind of drillable slim-hole reaming leading cone, this device has realized that can to improve circulation of drilling fluid unimpeded, prevent that mud drum and hydrophthalmia from blocking, in sand bridge section, can guide smoothly, play the effect of fast drilling and accident prevention.Overcome the existing reaming leading cone phenomenon that often generation mud drum, hydrophthalmia block in operation process, leading cone cannot be guided through the deficiency of sand bridge.
Technical solution adopted in the utility model is: a kind of drillable slim-hole reaming leading cone, comprise body, and body upper end is designed with top connection; Body lower end outside is designed with many milling swords, and before milling sword and inner side is all inlaid with composite polycrystal-diamond, and body bottom is designed with the helicla flute of a plurality of 60 ° of lift angles, in each helicla flute, is embedded with hydrophthalmia, and body lower end is designed with lower body hydrophthalmia.
The beneficial effects of the utility model are: the utility model is owing to having adopted the embedded a plurality of hydrophthalmias of helicla flute and leading cone bottom to be provided with the mode of hydrophthalmia, even thereby in slim-hole, have knockout or mud drum, during reaming, drilling fluid also can smooth and easyly circulate; Owing to having adopted before milling sword and inner side is all inlaid with composite polycrystal-diamond, thereby when meeting that sand bridge or the borehole wall are unsmooth step, there is certain drillability, can well bore out sand bridge and repair the borehole wall.
Accompanying drawing explanation:
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
The specific embodiment:
As shown in Figure 1, a kind of drillable slim-hole reaming leading cone, comprises body 2, and body 2 upper ends are designed with top connection 1; Body 2 lower ends outsides are designed with many milling swords 3, milling sword 3 above and inner side be all inlaid with composite polycrystal-diamond 7, body 2 bottoms are designed with the helicla flute 4 of a plurality of 60 ° of lift angles, in each helicla flute 4, are embedded with hydrophthalmia 6, body 2 lower ends are designed with lower body hydrophthalmia 5.
Be understandable that, above about specific descriptions of the present utility model, only for being described, the utility model is not limited to the described technical scheme of the utility model embodiment, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the utility model, to reach identical technique effect; As long as meet, use needs, all within protection domain of the present utility model.
Claims (1)
1. a drillable slim-hole reaming leading cone, comprises body (2), and body (2) upper end is designed with top connection (1); It is characterized in that: outside, body (2) lower end is designed with many milling swords (3), milling sword (3) is all inlaid with composite polycrystal-diamond (7) with inner side above, body (2) bottom is designed with the helicla flute (4) of a plurality of 60 ° of lift angles, in each helicla flute (4), be embedded with hydrophthalmia (6), body (2) lower end is designed with lower body hydrophthalmia (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320500482.8U CN203463014U (en) | 2013-08-15 | 2013-08-15 | Drillable slim-hole reaming guide cone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320500482.8U CN203463014U (en) | 2013-08-15 | 2013-08-15 | Drillable slim-hole reaming guide cone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203463014U true CN203463014U (en) | 2014-03-05 |
Family
ID=50175386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320500482.8U Expired - Fee Related CN203463014U (en) | 2013-08-15 | 2013-08-15 | Drillable slim-hole reaming guide cone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203463014U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437523A (en) * | 2016-11-16 | 2017-02-22 | 河南广度超硬材料有限公司 | Drilling head capable of grinding and finishing drillhole wall |
-
2013
- 2013-08-15 CN CN201320500482.8U patent/CN203463014U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437523A (en) * | 2016-11-16 | 2017-02-22 | 河南广度超硬材料有限公司 | Drilling head capable of grinding and finishing drillhole wall |
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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: 20140305 Termination date: 20140815 |
|
| EXPY | Termination of patent right or utility model |