CN205078194U - Double -walled drilling rod - Google Patents
Double -walled drilling rod Download PDFInfo
- Publication number
- CN205078194U CN205078194U CN201520843223.4U CN201520843223U CN205078194U CN 205078194 U CN205078194 U CN 205078194U CN 201520843223 U CN201520843223 U CN 201520843223U CN 205078194 U CN205078194 U CN 205078194U
- Authority
- CN
- China
- Prior art keywords
- seat
- honour
- drilling rod
- double
- bushing pipe
- 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
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- Earth Drilling (AREA)
Abstract
The utility model relates to a double -walled drilling rod. Need lift the drilling rod after the current drilling rod of main solution is met and is blocked up and make the problem of creeping into the inefficiency in drilling process. Its characterized in that: body (1) upper end internal thread is connected with the seat of honour (2), and lower extreme internal thread is connected with down (5), be connected through bushing pipe (4) between the seat of honour (2) and lower (5), and be equipped with the ring cavity between bushing pipe (4) and body (1), the seat of honour (2) and lower (5) go up open there is a vertical direction of a plurality of cross the liquid hole, and the liquid hole and the ring cavity communicates with each other. The well -flushing unfreezing that can recoil when meeting the card of this double -walled drilling rod can be played and prevent having improved the effect of blocking up and crept into efficiency.
Description
Technical field
The utility model relates to a kind of oilfield, is a kind of double-wall drill pipe specifically.
Background technology
Drilling rod is instrument indispensable in oil drilling, for connecting rig landscape apparatus and the brill mill equipment being positioned at drilling well bottom, drilling mud is transported to drill bit, and improve together with drill bit, reduce or rotary drilling mill equipment, drilling rod performance used on current oil field is single, meets after blocking up, drilling rod carried by needs in drilling process, wasting manpower and material resources, makes drilling efficiency low.
Summary of the invention
In order to overcome existing drilling rod meet in drilling process stifled after need to carry drilling rod and the deficiency that makes drilling efficiency low, the utility model provides a kind of double-wall drill pipe, can be recoiled during this double-wall drill pipe chance card well-flushing unfreezing, can play anti-blocking effect, improve drilling efficiency.
The technical solution of the utility model is: a kind of double-wall drill pipe, comprise body, described body upper end internal whorl is connected with the seat of honour, lower end internal whorl is connected with lower seat, be connected by bushing pipe between the described seat of honour with lower seat, and be provided with ring cavity between bushing pipe and body, the described seat of honour and lower seat have the liquid pass hole of several vertical directions, and liquid pass hole communicates with described ring cavity.
The utility model has following beneficial effect: owing to taking such scheme, and inside, body two ends is connected to the seat of honour and lower seat, is connected with bushing pipe, is provided with ring cavity between bushing pipe and body between the seat of honour and lower seat, and the seat of honour and lower seat have transitional pore.When meeting stifled in drilling process, drilling fluid can be returned above by liquid pass hole, ring cavity, carries out backwash de-plugging, thus does not realize putting forward the object that drill string gets final product de-plugging, substantially increases drilling efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
1-body in figure, the 2-seat of honour, 3-O-ring seal, 4-bushing pipe, seat under 5-, seat liquid pass hole under 6-, 7-seat of honour liquid pass hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, a kind of double-wall drill pipe, comprise body 1, described body 1 upper end internal whorl is connected with the seat of honour 2, and lower end internal whorl is connected with lower seat 5, be connected by bushing pipe 4 between the described seat of honour 2 with lower seat 5, and be provided with ring cavity between bushing pipe 4 and body 1, the described seat of honour 2 has several seat of honour liquid pass holes 7, lower seat 5 has several perpendicular lower seat liquid pass holes 6, described seat of honour liquid pass hole 7 and lower seat liquid pass hole 6 are vertical direction, and communicate with described ring cavity.The seat of honour 2, when assembling, is first connected on body 1, is then placed in body 1 by bushing pipe 4, its end is placed on the seat of honour 2, then be connected on body 1 by lower seat 5, and make it be connected with bushing pipe 4 end by this double-wall drill pipe.The described seat of honour 2, lower seat 5 and bushing pipe 4 contact surface are respectively equipped with O-ring seal 3.
When adopting this double-wall drill pipe drilling well, when being hampered or meet stifled, drilling fluid returns in the ring cavity between bushing pipe 4 and body 1, realizes backwash de-plugging.This double-wall drill pipe, when being hampered, not needing to carry drill string and gets final product de-plugging, improve drilling efficiency.
Claims (1)
1. a double-wall drill pipe, comprise body (1), it is characterized in that: described body (1) upper end internal whorl is connected with the seat of honour (2), lower end internal whorl is connected with lower seat (5), be connected by bushing pipe (4) between the described seat of honour (2) with lower seat (5), and be provided with ring cavity between bushing pipe (4) and body (1), the described seat of honour (2) and lower seat (5) have the liquid pass hole of several vertical directions, and liquid pass hole communicates with described ring cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520843223.4U CN205078194U (en) | 2015-10-28 | 2015-10-28 | Double -walled drilling rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520843223.4U CN205078194U (en) | 2015-10-28 | 2015-10-28 | Double -walled drilling rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205078194U true CN205078194U (en) | 2016-03-09 |
Family
ID=55430608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520843223.4U Expired - Fee Related CN205078194U (en) | 2015-10-28 | 2015-10-28 | Double -walled drilling rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205078194U (en) |
-
2015
- 2015-10-28 CN CN201520843223.4U patent/CN205078194U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160309 Termination date: 20161028 |