CN102278076A - Limiting pup joint - Google Patents
Limiting pup joint Download PDFInfo
- Publication number
- CN102278076A CN102278076A CN2011101923299A CN201110192329A CN102278076A CN 102278076 A CN102278076 A CN 102278076A CN 2011101923299 A CN2011101923299 A CN 2011101923299A CN 201110192329 A CN201110192329 A CN 201110192329A CN 102278076 A CN102278076 A CN 102278076A
- Authority
- CN
- China
- Prior art keywords
- pipe nipple
- spacing pipe
- link
- pup joint
- external surface
- 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.)
- Pending
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- Branch Pipes, Bends, And The Like (AREA)
Abstract
The invention discloses a limiting pup joint. The external surface of the limiting pup joint disclosed by the invention is provided with a groove along the axial direction or provided with a convex edge along the axial direction. The limiting pup joint disclosed by the invention can effectively reduce the pressure of a motor in the operating, thereby protecting the motor.
Description
Technical field
The present invention relates to the oil equipment technical field, specifically a kind of spacing pipe nipple.
Background technology
High-pressure hydraulic sprays radially, and hole creating technology originates from jetting flushing oil pipe bit bar, found by increasing pressure that this technology had good sand washing ability afterwards, satisfy by improving shower nozzle and relevant auxiliary equipment, intensified pressure sprays the producing horizon position, develops into a kind of oilfield stimulation technology of high-efficiency and economic gradually.High-pressure hydraulic sprays radially hole creating technology, must be lowered into the pipe string of windowing in the deflecting pipe string earlier to realize windowing, and then carry out spraying operation.Because relevant operation all is in the down-hole, whether the pipe of windowing of knowing that can't be definite goes here and there fully down in deflecting pipe string.By adopting spacing short circuit to limit transferring of the tool string of windowing, determine to window under the tool string in the prior art to specifying the place of windowing.When spacing pipe nipple played position-limiting action, spacing pipe nipple and spacing collar are circumferentially linear contact, tightly continuous, does not have the space therebetween substantially, cause like this providing the liquid of screw motor operation power can't the row of returning thoroughly, make very high that motor pressure suppresses.Cause motor to damage.
Because the defective that above-mentioned existing spacing pipe nipple exists, the inventor is actively studied innovation, in the hope of founding a kind of spacing pipe nipple of new structure, to improve the defective that prior art exists, makes it have more practicality.
Summary of the invention
In order to solve the above-mentioned problems in the prior art, the invention provides a kind of spacing pipe nipple, can effectively reduce motor pressure at work, motor is protected.
In order to solve the problems of the technologies described above, the present invention has adopted following technical scheme:
Spacing pipe nipple, the external surface of described spacing pipe nipple has groove vertically, or is provided with protruding stupefied vertically.
Further, described groove or protruding stupefied at least two, and axially evenly distribute along the external surface of spacing pipe nipple.
Further, described groove mills out with milling cutter.
Compared with prior art, beneficial effect of the present invention is:
The present invention is by being provided with groove or protruding stupefied vertically on the spacing pipe nipple whole body, so that in spacing pipe nipple is seated at a sleeve time, forms the space and carry out earial drainage between spacing pipe nipple and sleeve, prevents to build the pressure.Reduced the pressure in the motor operations, the protection motor, what assurance was windowed carries out smoothly, simple and practical.
Description of drawings
Fig. 1 is the structural representation of spacing pipe nipple of the present invention;
Fig. 2 cuts open figure for the A-A of Fig. 1;
Fig. 3 is that the B of Fig. 1 is to view.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail, but not as a limitation of the invention.
Embodiment 1:
Fig. 1 is the structural representation of spacing pipe nipple of the present invention; Fig. 2 cuts open figure for the A-A of Fig. 1; Fig. 3 is that the B of Fig. 1 is to view.As shown in Figure 1 to Figure 3, spacing pipe nipple, an end have internal thread and form first link 3, and the other end has external screw thread, forms second link 4.Outer 3 to second links of first link without leave of spacing pipe nipple reduce gradually.External surface at spacing pipe nipple 1 mills out the external surface circumferentially evenly distribution of 2, four grooves 2 of four grooves along spacing pipe nipple 1 vertically.
Embodiment 2:
Present embodiment and embodiment 1 different being are provided with protruding stupefied at the external surface of spacing pipe nipple vertically.Protruding stupefied at least two, and along the axially even distribution of the external surface of spacing pipe nipple.Protruding stupefied number can be set as required.Protruding stupefied can be that welding is got on, or otherwise form.
Above embodiment is an exemplary embodiment of the present invention only, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection domain, this modification or be equal to replacement and also should be considered as dropping in protection scope of the present invention.
Claims (4)
1. spacing pipe nipple is characterized in that the external surface of described spacing pipe nipple has groove vertically, or is provided with protruding stupefied vertically.
2. spacing pipe nipple according to claim 1 is characterized in that, described groove or protruding stupefied at least two, and axially evenly distribute along the external surface of spacing pipe nipple.
3. spacing pipe nipple according to claim 1 is characterized in that described groove mills out with milling cutter.
4. spacing pipe nipple according to claim 1, it is characterized in that an end of described spacing pipe nipple has internal thread and forms first link, the other end has external screw thread, form second link, outer first link to the second link without leave of spacing pipe nipple reduces gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101923299A CN102278076A (en) | 2011-07-11 | 2011-07-11 | Limiting pup joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101923299A CN102278076A (en) | 2011-07-11 | 2011-07-11 | Limiting pup joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102278076A true CN102278076A (en) | 2011-12-14 |
Family
ID=45103765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101923299A Pending CN102278076A (en) | 2011-07-11 | 2011-07-11 | Limiting pup joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102278076A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184858A (en) * | 2011-12-29 | 2013-07-03 | 四川安东油气工程技术服务有限公司 | Limiting device |
| CN109280840A (en) * | 2018-08-20 | 2019-01-29 | 陕西速源节能科技有限公司 | It is a kind of for the alloy of oil field tubing string antiscale and its pipe nipple apparatus of production |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5597590A (en) * | 1989-06-09 | 1990-12-13 | Sandvik Ab | Drill tool |
| CN2152070Y (en) * | 1993-06-18 | 1994-01-05 | 石油大学(北京) | Directional hinged short screw drilling rig |
| US20030070803A1 (en) * | 2000-09-06 | 2003-04-17 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub and method |
| CN2881056Y (en) * | 2006-03-31 | 2007-03-21 | 新疆石油管理局钻井工艺研究院 | Location device of self-locking oblique apparatus |
| CN200958369Y (en) * | 2006-06-19 | 2007-10-10 | 江光伟 | Weldless drilling rod for coal mine |
| US20100097890A1 (en) * | 2008-10-20 | 2010-04-22 | Sullivan Eric C | Methods and apparatuses for data collection and communication in drill string components |
| CN202117578U (en) * | 2011-07-11 | 2012-01-18 | 安东石油技术（集团）有限公司 | Limit short section |
-
2011
- 2011-07-11 CN CN2011101923299A patent/CN102278076A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5597590A (en) * | 1989-06-09 | 1990-12-13 | Sandvik Ab | Drill tool |
| CN2152070Y (en) * | 1993-06-18 | 1994-01-05 | 石油大学(北京) | Directional hinged short screw drilling rig |
| US20030070803A1 (en) * | 2000-09-06 | 2003-04-17 | Casetech International, Inc. | Dual diameter and rotating centralizer/sub and method |
| CN2881056Y (en) * | 2006-03-31 | 2007-03-21 | 新疆石油管理局钻井工艺研究院 | Location device of self-locking oblique apparatus |
| CN200958369Y (en) * | 2006-06-19 | 2007-10-10 | 江光伟 | Weldless drilling rod for coal mine |
| US20100097890A1 (en) * | 2008-10-20 | 2010-04-22 | Sullivan Eric C | Methods and apparatuses for data collection and communication in drill string components |
| CN202117578U (en) * | 2011-07-11 | 2012-01-18 | 安东石油技术（集团）有限公司 | Limit short section |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184858A (en) * | 2011-12-29 | 2013-07-03 | 四川安东油气工程技术服务有限公司 | Limiting device |
| CN103184858B (en) * | 2011-12-29 | 2016-06-08 | 四川安东油气工程技术服务有限公司 | Stop means |
| CN109280840A (en) * | 2018-08-20 | 2019-01-29 | 陕西速源节能科技有限公司 | It is a kind of for the alloy of oil field tubing string antiscale and its pipe nipple apparatus of production |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20111214 |