CN202227997U - Novel welded type weight-increasing drill pipe - Google Patents
Novel welded type weight-increasing drill pipe Download PDFInfo
- Publication number
- CN202227997U CN202227997U CN2011203045909U CN201120304590U CN202227997U CN 202227997 U CN202227997 U CN 202227997U CN 2011203045909 U CN2011203045909 U CN 2011203045909U CN 201120304590 U CN201120304590 U CN 201120304590U CN 202227997 U CN202227997 U CN 202227997U
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- pipe
- body section
- drill pipe
- section
- drill
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Abstract
The utility model discloses a novel welded type weight-increasing drill pipe, which comprises a pipe body section and connecting sections located at both ends of the pipe body section and is characterized in that the pipe body section and the connecting sections at both ends of the pipe body section adopt an integrated design of an entire steel pipe. The thickness of the pipe wall of a center section of the pipe body section is larger than that of the pipe wall of other sections of the pipe body section. Due to the adoption of the structural mode, the weight-increasing drill pipe is formed so that gentle transition in terms of weight and rigidity is provided between a heavier drill collar and the lighter drill pipe. Therefore, the drill pipe reduces fatigue failure of a shaft shoulder and prolongs service life of a drilling tool. The drill pipe is easier to bend than the dill collar so that the drill pipe facilitates directional control of large-slope drilling and horizontal drilling. The drill pipe is more firm and durable than a welded type drill pipe by adopting the integrated design of the entire steel pipe.
Description
Technical field
The utility model relates to a kind of drilling rod, is specifically related to a kind of novel welded type heavy weight drill pipe.
Background technology
Traditional drilling rod is lighter, makes the mild transition that weight and rigidity can not be provided between heavier drill collar and the relatively lighter drilling rod, thereby application life of drilling tool has been shortened in the fatigue failure that has increased the shaft shoulder.In addition, adopt the welded structure form between the body of traditional drilling rod and the connector at its two ends, so sturdy and durable inadequately.
The utility model content
In order to overcome above-mentioned deficiency, the purpose of the utility model is to provide a kind of novel welded type heavy weight drill pipe sturdy and durable, long service life that has.
To achieve these goals, the technical scheme below the utility model adopts:
Novel welded type heavy weight drill pipe comprises body section and the linkage section that is positioned at body section two ends, it is characterized in that: the linkage section at said body Duan Yuqi two ends adopts the integrated design of whole steel pipe; The pipe thickness of the central segment in the said body section is greater than the thickness of other pipeline section in the body section.
In said two linkage sections, the end face of a linkage section is provided with the tapering internal thread, and the end face of another linkage section is provided with the tapering external screw thread.
Central segment in the said body section is provided with the sign groove.
Be provided with elevator between said body section and the linkage section and use the tapering shoulder.
The beneficial effect of the utility model: owing to adopt above-mentioned form of structure; Constituted the drilling rod of scale-up version; Make between heavier drill collar and the relative lighter drilling rod the mild transition of weight and rigidity is provided, thereby reduced the fatigue failure of the shaft shoulder, prolonged the application life of drilling tool; Because drilling rod is more crooked more easily than drill collar, the orientation control of big gradient and horizontal drilling has been simplified in the use of the utility model; Because the utility model adopts the integrated design of whole steel pipe, it is more sturdy and durable to compare the welded type drilling rod.
Description of drawings
Below in conjunction with accompanying drawing the utility model is done further to specify.
Fig. 1 is the structural representation of the utility model.
Among the figure: 1, body section; 2, linkage section; 3, central segment; 4, internal thread; 5, external screw thread; 6, tapering shoulder; 7, sign groove.
The specific embodiment
As shown in Figure 1, novel welded type heavy weight drill pipe, the linkage section 2 that comprises body section 1 and be positioned at body section 1 two ends is characterized in that: the linkage section 2 at said body section 1 and its two ends adopts the integrated design of whole steel pipe; The pipe thickness of the central segment 3 in the said body section 1 is greater than the thickness of other pipeline section in the body section.
In said two linkage sections 2, the end face of a linkage section 2 is provided with tapering internal thread 4, and the end face of another linkage section 2 is provided with tapering external screw thread 5.Central segment in the body section 1 is provided with sign groove 7.Be provided with elevator with tapering shoulder 6 between body section 1 and the linkage section 2.
Production technology: the utility model has adopted following technology in the process of producing:
A. heat treatment technics: heat-treatment production line carries out modifier treatment to guarantee the performance of steel pipe through accurate control glowing furnace and furnace temperature to sleeve pipe.Simultaneously, finally be organized as tempered sorbite on the product body, guarantee that it has excellent mechanical property.Heat treatment process parameter: water-quenching more than 900 ℃+640 ℃ high tempering, guarantee during quenching that hardening media sprays in the steel pipe internal-surface Rotating with Uniform, external surface capacity recirculated water drenches outward.
B. eliminate the residual stress technology: adopt the technology of high temperature sizing and high-temperature straightening, not only guaranteed the external diameter of steel pipe and the precision of circularity, and be the key of its low residual stress of control.This process is to lean on the way of coming out of the stove fast behind the high tempering to realize, the temperature department one that the high v content of body impels its tempering is with higher, and this guarantees that temperature that steel pipe goes out entering straightener behind the tempering furnace is than higher.Guarantee 500～550 ℃ of thermal straightening temperature as far as possible, be lower than 500 ℃ like thermal straightening and then consider stress relief annealing, 500 ℃ of stress relief annealing temperature.Above-mentioned oil gas well underground work of processing uses the steel pipe mechanical property to be: yield strength: overall elongation 0.7%, and minimum is 931MPa, grade of steel 135ksi; Tensile strength >=1000MPa; The impact toughness index: average Charpy-V impact power >=100J, single Charpy-V impact power >=95J is 21 ℃ ± 2.8 ℃, 10 * 10 * 55mm, longitudinal test piece.
Claims (1)
1. a novel welded type heavy weight drill pipe comprises body section and the linkage section that is positioned at body section two ends, it is characterized in that: the linkage section at said body Duan Yuqi two ends adopts the integrated design of whole steel pipe; The pipe thickness of the central segment in the said body section is greater than the thickness of other pipeline section in the body section, and in said two linkage sections, the end face of a linkage section is provided with the tapering internal thread, and the end face of another linkage section is provided with the tapering external screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203045909U CN202227997U (en) | 2011-08-18 | 2011-08-18 | Novel welded type weight-increasing drill pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203045909U CN202227997U (en) | 2011-08-18 | 2011-08-18 | Novel welded type weight-increasing drill pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202227997U true CN202227997U (en) | 2012-05-23 |
Family
ID=46078585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203045909U Expired - Fee Related CN202227997U (en) | 2011-08-18 | 2011-08-18 | Novel welded type weight-increasing drill pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202227997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865045A (en) * | 2012-09-25 | 2013-01-09 | 贵阳科迈机械设备有限公司 | Rock drilling quick replacing drilling rod with taper thread |
| CN111441728A (en) * | 2012-11-29 | 2020-07-24 | 格兰特普莱德科有限公司 | Improved landing pipe |
-
2011
- 2011-08-18 CN CN2011203045909U patent/CN202227997U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865045A (en) * | 2012-09-25 | 2013-01-09 | 贵阳科迈机械设备有限公司 | Rock drilling quick replacing drilling rod with taper thread |
| CN111441728A (en) * | 2012-11-29 | 2020-07-24 | 格兰特普莱德科有限公司 | Improved landing pipe |
| CN111441728B (en) * | 2012-11-29 | 2022-07-26 | 格兰特普莱德科有限公司 | Improved landing pipe |
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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 |
Granted publication date: 20120523 Termination date: 20170818 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |