CN203257337U - Non-thickened connection type thick-wall drill rod - Google Patents
Non-thickened connection type thick-wall drill rod Download PDFInfo
- Publication number
- CN203257337U CN203257337U CN2013202151577U CN201320215157U CN203257337U CN 203257337 U CN203257337 U CN 203257337U CN 2013202151577 U CN2013202151577 U CN 2013202151577U CN 201320215157 U CN201320215157 U CN 201320215157U CN 203257337 U CN203257337 U CN 203257337U
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- drill rod
- thick
- drilling rod
- drill
- heavy wall
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Abstract
The utility model relates to a drill rod used in drilling of oil and gas, coal bed gas, and the like, in particular to a non-thickened connection type thick-wall drill rod which comprises a drill rod male connector, a drill rod female connector, a drill rod thick-wall pipe body, a drill rod welding seam, a male connector transition arc conical surface and a female connector transition arc conical surface. The two ends of the drill rod thick-wall pipe body are welded with the drill rod male connector and the drill rod female connector respectively. The drill rod welding seam is provided, and the inner diameter and the outer diameter of the drill rod thick-wall pipe body are identical to the inner diameter and the outer diameter of the drill rod male connector and the inner diameter and the outer diameter of the drill rod female connector. The wall thickness of the drill rod thick-wall pipe body is within 13-40 cm. The non-thickened connection type thick-wall drill rod mainly solves the problem that a common existing drill rod loses efficacy in a thickened transition area, and the wall thickness of the drill rod is properly increased, so that a thick-wall position of the drill rod is made to be located between a drill collar and a general drill rod, gentle transition of sections of underground drill columns can be achieved, and the underground drill rod failure probability is lowered.
Description
Technical field
The utility model relates to the drilling rod, particularly a kind of non-thickening interconnection system heavy wall drill pipe that the drillings such as petroleum gas, coal bed gas are used.
Background technology
Drilling rod is the requisite drill and petroleum extraction toolses of development of resources such as petroleum gas, and is the chief component of underground drill stem.Drilling rod plays transmitting torque, the effects such as delivery cycle drilling fluid, and bearing stretching, bending, reverse etc. meets load.
Drilling rod in actual use, drilling rod lost efficacy and mostly to concentrate on drill pipe thickening intermediate zone zone.Because drilling rod is at thickened area and addition thick transition area, drill pipe thickness is large, rigidity is large, drilling rod is in drilling process, produce flexural deformation at this position little, and in addition thick transition area disappearance place, significant change has occured in drill pipe thickness, becomes the shape catastrophe point, easily cause stress and concentrate, in use be easy to occur fatigue failure.Secondly, because the body end thickeies processing, so that the sectional dimension of drilling rod inwall changes, drilling fluid can produce to tube wall the effects such as eddy current, erosion through this zone the time, causes drilling rod and loses efficacy.On the structure of downhole assembly of underground drill stem, some undersized drill collars can directly be connected with drilling rod, and the section modulus of drilling rod and drill collar differs larger, so that the drilling rod that links to each other with drill collar becomes the rigidity abrupt change of cross-section point of whole drill string, the structural stress that becomes whole drill string is concentrated the position, easily the recurring structure stress fatigue produces and lost efficacy.At present, generally adopt heavy weight drill pipe jointed rod and drill collar, but the heavy weight drill pipe processing technology is comparatively loaded down with trivial details, price is more expensive.
Summary of the invention
The purpose of this utility model is to provide a kind of non-thickening interconnection system heavy wall drill pipe, mainly solve common existing drilling rod and have failure conditions in the crassitude intermediate belt zone, and suitably increase drill pipe thickness, so that drill pipe thickness is between drill collar and the conventional drilling rod, it is excessive gently to play the underground drill stem cross section, reduces the drilling rod failure probability of down-hole.
For achieving the above object, the technical solution of the utility model is:
A kind of non-thickening interconnection system heavy wall drill pipe is characterized in that: it comprises fillet of tool joint pins, tool joint box, drilling rod heavy wall body, drill stem welding seam, the male joint transition arc conical surface and the female joint transition arc conical surface; Be welded with fillet of tool joint pins and tool joint box at drilling rod heavy wall body two ends, have drill stem welding seam, the internal-and external diameter of drilling rod heavy wall body and the internal-and external diameter of fillet of tool joint pins and tool joint box are consistent; The wall thickness of this drilling rod heavy wall body is in 13～40cm scope.
Described non-thickening interconnection system heavy wall drill pipe is characterized in that: the length of drilling rod heavy wall body is identical with common API body.
Described non-thickening interconnection system heavy wall drill pipe is characterized in that: two shoulder joint designs are adopted in fillet of tool joint pins, tool joint box.
The utlity model has following advantage:
1, drilling rod of the present utility model has simple in structurely, and body need not to thicken processing, has simplified drilling rod production and processing operation, and processing cost is low;
2, adopt thick-walled structure and two shoulder joint design designs at drill pipe body, the drilling rod overall mechanical properties is greatly improved.
3, because the drill pipe body wall thickness is between common drilling rod and the drill collar, in actual use, can play the mild transition of drill string assembly structure, in the part hole condition, can effectively replace heavy weight drill pipe, reduce the generation of drilling well failure accidents.
4, the stress that disappearance place of body crassitude intermediate belt exists is concentrated because drilling rod without the body thick section, can effectively be avoided, and causes that drilling rod lost efficacy.
5, because the drill pipe body inwall changes without sectional dimension, the good flowing properties of drilling fluid in drilling rod is difficult for reducing the inefficacy of drilling rod owing to the inboard wall of tube body sectional dimension changes eddy current or the erosion that produces.
Description of drawings
Fig. 1 is the utility model structural representation.
The specific embodiment
See also Fig. 1, the structural representation of a kind of non-thickening interconnection system heavy wall drill pipe of its utility model.As shown in the figure: it comprises fillet of tool joint pins 1, tool joint box 2, drilling rod heavy wall body 3, drill stem welding seam 4, the male joint transition arc conical surface 5 and the female joint transition arc conical surface 6; Be welded with fillet of tool joint pins 1 and tool joint box 2 at drilling rod heavy wall body 3 two ends, have drill stem welding seam 4, the internal-and external diameter of drilling rod heavy wall body 3 and fillet of tool joint pins 1 are consistent with the internal-and external diameter of tool joint box 2; The wall thickness of this drilling rod thick-walled pipe 3 is in 13～40cm scope.The length of drilling rod heavy wall body 3 is identical with common API body, drilling rod heavy wall body 3 carries out modifier treatment, grade of steel is also consistent with common API drill pipe body, be divided into E75, X95, G105 and S135 grade of steel, two shoulder joint design are adopted in tool joint, to improve the torsional strength of joint, improve the whole mechanical property of this kind drilling rod.
Want the words in appropriate change joint weldering footpath if any special circumstances, the arc size that can adjust male joint tapering arc surface 5 and female joint tapering arc surface 6 produces a desired effect, the material of thick-walled pipe 3 can adopt common middle low-carbon alloy steel, such as 4137H, 4145H etc.
Being preferred embodiment of the present utility model only in sum, is not to limit practical range of the present utility model.Be that all equivalences of doing according to the content of the utility model claim change and modification, all should be technology category of the present utility model.
Claims (3)
1. non-thickening interconnection system heavy wall drill pipe, it is characterized in that: it comprises fillet of tool joint pins (1), tool joint box (2), drilling rod heavy wall body (3), drill stem welding seam (4), the male joint transition arc conical surface (5) and the female joint transition arc conical surface (6); Be welded with fillet of tool joint pins (1) and tool joint box (2) at drilling rod heavy wall body (3) two ends, have drill stem welding seam (4), the internal-and external diameter of drilling rod heavy wall body (3) and fillet of tool joint pins (1) are consistent with the internal-and external diameter of tool joint box (2); The wall thickness of this drilling rod heavy wall body (3) is in 13～40cm scope.
2. non-thickening interconnection system heavy wall drill pipe according to claim 1, it is characterized in that: the length of drilling rod heavy wall body (3) is identical with common API body.
3. non-thickening interconnection system heavy wall drill pipe according to claim 1 and 2 is characterized in that: fillet of tool joint pins (1), the two shoulder joint designs of tool joint box (2) employing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202151577U CN203257337U (en) | 2013-04-25 | 2013-04-25 | Non-thickened connection type thick-wall drill rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202151577U CN203257337U (en) | 2013-04-25 | 2013-04-25 | Non-thickened connection type thick-wall drill rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203257337U true CN203257337U (en) | 2013-10-30 |
Family
ID=49469914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202151577U Expired - Lifetime CN203257337U (en) | 2013-04-25 | 2013-04-25 | Non-thickened connection type thick-wall drill rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203257337U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153715A (en) * | 2014-07-01 | 2014-11-19 | 江苏曙光华阳钻具有限公司 | Integral type heavy weight drill pipe without thickening |
| EP3023575A1 (en) * | 2014-11-21 | 2016-05-25 | Sandvik Intellectual Property AB | Drill string rod with shoulder |
-
2013
- 2013-04-25 CN CN2013202151577U patent/CN203257337U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153715A (en) * | 2014-07-01 | 2014-11-19 | 江苏曙光华阳钻具有限公司 | Integral type heavy weight drill pipe without thickening |
| EP3023575A1 (en) * | 2014-11-21 | 2016-05-25 | Sandvik Intellectual Property AB | Drill string rod with shoulder |
| WO2016079013A1 (en) * | 2014-11-21 | 2016-05-26 | Sandvik Intellectual Property Ab | Drill string rod with guidance shoulder |
| CN107002467A (en) * | 2014-11-21 | 2017-08-01 | 山特维克知识产权股份有限公司 | Drill string drilling rod with guiding shoulder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |