CN203547560U - Double-wall drill pipe - Google Patents
Double-wall drill pipe Download PDFInfo
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- CN203547560U CN203547560U CN201320608214.8U CN201320608214U CN203547560U CN 203547560 U CN203547560 U CN 203547560U CN 201320608214 U CN201320608214 U CN 201320608214U CN 203547560 U CN203547560 U CN 203547560U
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- wall
- inner tube
- tube
- female joint
- outer tube
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Abstract
The utility model discloses a double-wall drill pipe, which comprises an inner tube and an outer tube, wherein the outer tube consists of a female joint, a pipe body and a male joint; the female joint, the pipe body and the male joint are successively connected; the inner tube consists of a suspension head and an inner tube body which are successively connected; the other end of the inner tube body is provided with a sealing ring recess connected with a next drill pipe; a seal ring is arranged in the recess; the inner tube body is provided with a wiper block connected with the inner wall of the outer tube; the inner wall of the female joint of the outer tube is provided with at least one groove; the side edges of the outer wall of the suspension head of the inner tube are respectively provided with a boss corresponding to the groove; according to the elastic deformation of the suspension head, the bosses on the side edges of the outer wall of the suspension head of the inner tube are enabled to enter the grooves on the inner wall of the female joint of the outer tube to be positioned; the side edges of the outer wall of the suspension head of the inner tube and the inner hole of the female joint of the outer tube are in interference fit. According to the double-wall drill pipe disclosed by the utility model, washing medium can more smoothly flow, and flowing resistance is smaller, thereby being favorable for forming reverse circulation. Meanwhile, the inner tube and the outer tube are free from relative movement so as to reduce mutual abrasion.
Description
Technical field
The utility model relates to a kind of borer drill rod, is specially a kind of double-wall drill pipe.
Background technology
Double-wall drill pipe is comprised of inside and outside two-layer drilling rod (title inner and outer tubes).Between inner and outer pipe, forming annular space, is anti-circulation, sampling core while creeping into, to the passage of pumping scouring media at the bottom of hole, the general scouring media that circulates that only plays a part.Between inner tube and outer tube, there is relative motion, adopt at present the structure of jump ring location to connect inner and outer pipes, the sectional area of passage has dwindled much because of the existence of jump ring like this, it is not very smooth and easy that scouring media flows, flow resistance is large, need to, by dwindling sectional area that inner tube latus rectum increases annular channel to reduce flow resistance, and reduce inner tube latus rectum, be unfavorable for reverse circulating formation.
Utility model content
The technical problem that the utility model solves is to provide a kind of double-wall drill pipe, to solve the problem proposing in above-mentioned background technology.
The technical problem that the utility model solves realizes by the following technical solutions:
A kind of double-wall drill pipe, comprise inner and outer tubes, described outer tube is by the female joint being connected successively, the body of rod and male joint form, described inner tube is by the hanging head connecting successively, interior tube body forms, the other end of the interior body of rod is provided with the seal groove being connected with next root drilling rod, in groove, place sealing ring, interior tube body is provided with the wiper block being connected with outer tube wall, on the inwall of outer tube female joint, be provided with at least one groove, on the incline of inner tube hanging head outer wall, be respectively arranged with the boss of setting corresponding to groove, utilize the elastic deformation of hanging head boss on inner tube hanging head outer wall incline is entered in the groove on outer tube female joint inwall and locate, and the endoporus of inner tube hanging head outer wall incline and outer tube female joint is interference fit.
Further, the incline quantity of inner tube hanging head outer wall is 2～4.
Further, or the split one-body molded with inner tube hanging head of described incline coordinates and forms.
Further, groove on the inwall of female joint is replaceable is boss, on the incline of hanging head outer wall the corresponding boss arranging replaceable be groove, utilize the elastic deformation of hanging head that the groove on inner tube hanging head outer wall incline is matched with the boss on outer tube female joint inwall.
In the utility model, outer tube is formed by welding or screwed connection by female joint, the body of rod and male joint, can be also integrally manufactured forming.Inner tube is comprised of hanging head, interior tube body, wiper block and sealing ring.Hanging head and interior tube body are integral by interference fit, welding or screwed connection, and wiper block is connected with interior tube body by welding, and wiper block also can be connected on righting joint and be integral with interior tube body welding or screwed connection.The utility model creeps into and full hole reverse circulation drilling for the gas lift reverse circulation of well, geothermal well, coal bed gas well, shale gas well, Oil/gas Well, gas drainage well, gas exhaust boring, geological prospecting hole, base pile hole, anchor hole.
Compared with prior art, the utlity model has following beneficial effect;
1, than the structure of jump ring location, can obtain more long-pending circular passage, heavy in section, make flowing of scouring media more smooth and easy, flow resistance is less; If the structure that sectional area maintenance in circular passage is located with jump ring is identical, can obtain larger inner tube through-hole diameter, be conducive to reverse circulating formation;
2, between inner tube and outer tube, be interference fit, make inner tube and outer tube there is no relative motion, reduced mutual wearing and tearing.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the B portion enlarged drawing of Fig. 1;
Fig. 3 is the A-A view of Fig. 1.
In figure: 1, female joint, 11, groove, 2, hanging head, 21, incline, 22, boss, 3, interior tube body, 4, the body of rod, 5, male joint, 6, wiper block, 7, sealing ring.
The specific embodiment
In order to make of the present utility modelly to realize technological means, creation characteristic, reach object and effect is easy to understand, below in conjunction with specific embodiment, further set forth the utility model.
As shown in Figures 1 to 3, a kind of double-wall drill pipe, comprise inner and outer tubes, described outer tube is by the female joint 1 being connected successively, the body of rod 4 and male joint 5 form, described inner tube is by the hanging head 2 connecting successively, interior tube body 3 forms, the other end of interior tube body 3 is provided with the seal groove being connected with next root drilling rod, in groove, place sealing ring 7, interior tube body 3 is provided with the wiper block 6 being connected with outer tube wall, on the inwall of outer tube female joint 1, be provided with at least one groove 11, on the incline 21 of inner tube hanging head 2 outer walls, be respectively arranged with the boss 22 with the corresponding setting of groove 11, utilize the elastic deformation of hanging head 2 boss 22 on inner tube hanging head 2 outer wall inclines 21 is entered in the groove 11 on outer tube female joint 1 inwall and locate, and inner tube hanging head 2 outer wall inclines 22 are interference fit with the endoporus of outer tube female joint 1.
In the utility model, described incline 21 is one-body molded with inner tube hanging head 2, and incline 21 quantity are three.Outer tube is made of welded connection by female joint 1, the body of rod 4 and male joint 5.Inner tube is comprised of hanging head 2, interior tube body 3, wiper block 6 and sealing ring 7.Hanging head 2 links into an integrated entity by interference fit with interior tube body 3, and wiper block 6 is connected with interior tube body 3 by welding.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and manual, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. a double-wall drill pipe, comprise inner and outer tubes, described outer tube is by the female joint being connected successively, the body of rod and male joint form, described inner tube is by the hanging head connecting successively, interior tube body forms, the other end of interior tube body is provided with the seal groove being connected with next root drilling rod, in groove, place sealing ring, it is characterized in that: interior tube body is provided with the wiper block being connected with outer tube wall, on the inwall of outer tube female joint, be provided with at least one groove, on the incline of inner tube hanging head outer wall, be respectively arranged with the boss of setting corresponding to groove, utilize the elastic deformation of wiper block boss on inner tube hanging head outer wall incline is entered in the groove on outer tube female joint inwall and locate, and the endoporus of inner tube hanging head outer wall incline and outer tube female joint is interference fit.
2. a kind of double-wall drill pipe according to claim 1, is characterized in that: the incline quantity of inner tube hanging head outer wall is 2～4.
3. a kind of double-wall drill pipe according to claim 1, is characterized in that: described incline is one-body molded with inner tube hanging head or coordinate and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608214.8U CN203547560U (en) | 2013-09-30 | 2013-09-30 | Double-wall drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608214.8U CN203547560U (en) | 2013-09-30 | 2013-09-30 | Double-wall drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203547560U true CN203547560U (en) | 2014-04-16 |
Family
ID=50465689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320608214.8U Expired - Fee Related CN203547560U (en) | 2013-09-30 | 2013-09-30 | Double-wall drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203547560U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295245A (en) * | 2014-11-01 | 2015-01-21 | 郑州神利达钻采设备有限公司 | Embedded double-body drill stem |
| CN105064991A (en) * | 2015-07-23 | 2015-11-18 | 江西理工大学 | Drilling and soil sample taking double-wall drilling rig |
| CN105804667A (en) * | 2016-05-10 | 2016-07-27 | 江阴德玛斯特钻具有限公司 | Oil drill rod with built-in oil pipes |
| CN106121549A (en) * | 2016-08-26 | 2016-11-16 | 蒲长晏 | Water saving drilling rod |
| CN114251055A (en) * | 2020-09-23 | 2022-03-29 | 中国石油天然气集团有限公司 | Drill rod and drilling fluid temperature control system |
-
2013
- 2013-09-30 CN CN201320608214.8U patent/CN203547560U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295245A (en) * | 2014-11-01 | 2015-01-21 | 郑州神利达钻采设备有限公司 | Embedded double-body drill stem |
| CN105064991A (en) * | 2015-07-23 | 2015-11-18 | 江西理工大学 | Drilling and soil sample taking double-wall drilling rig |
| CN105064991B (en) * | 2015-07-23 | 2018-03-27 | 江西理工大学 | One kind probing soil sampling double wall drill tool |
| CN105804667A (en) * | 2016-05-10 | 2016-07-27 | 江阴德玛斯特钻具有限公司 | Oil drill rod with built-in oil pipes |
| CN105804667B (en) * | 2016-05-10 | 2018-06-29 | 江阴德玛斯特钻具有限公司 | The built-in oil drill rocker of oil pipe |
| CN106121549A (en) * | 2016-08-26 | 2016-11-16 | 蒲长晏 | Water saving drilling rod |
| CN114251055A (en) * | 2020-09-23 | 2022-03-29 | 中国石油天然气集团有限公司 | Drill rod and drilling fluid temperature control system |
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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: 20140416 Termination date: 20200930 |