CN203175417U - Welding drill collar - Google Patents
Welding drill collar Download PDFInfo
- Publication number
- CN203175417U CN203175417U CN 201320149053 CN201320149053U CN203175417U CN 203175417 U CN203175417 U CN 203175417U CN 201320149053 CN201320149053 CN 201320149053 CN 201320149053 U CN201320149053 U CN 201320149053U CN 203175417 U CN203175417 U CN 203175417U
- Authority
- CN
- China
- Prior art keywords
- drill collar
- welding
- collar body
- tube body
- male connection
- 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
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Abstract
The utility model discloses a welding drill collar which comprises a cylindrical drill collar tube body. The drill collar tube body is provided with a central hole. The upper end of the drill collar tube body is connected with an external thread connector in a narrow gap friction welding mode. The lower end of the drill collar tube body is connected with an internal thread connector in a narrow gap friction welding mode. A mounting clamping groove is formed in the drill collar tube body and located at the position of the external thread connector. The welding drill collar is simple in structure, low in cost, low in thread turning difficulty, long in service life, capable of being used for phosphorization or copper plating or hardening treatment on a thread surface easily, and high in repeated utilization rate.
Description
Technical field
The utility model relates to the drill collar that use in fields such as drilling well such as a kind of oil, natural gas, coal bed gas, shale gas and non-excavation, is a kind of welding drill collar concretely.
Background technology
At present, in drilling process such as oil, natural gas, drill collar is equivalent to 4～6 times of drill pipe thickness because its wall thickness is big, has bigger gravity, has played to drill bit and has applied the pressure of the drill, alleviate drill bit vibration, swing and beat, make effects such as drill bit stable working.Traditional drill collar adopts and forges or rolling AISI 4145H chrome-moly steel manufacturing, and material cost drops into bigger.In addition, existing drill collar is difficult for installing when installing by screw thread, has increased staff's burden.
The utility model content
The purpose of this utility model is exactly the defective that exists at prior art, provide a kind of with low cost, the thread turning difficulty of processing is low, is convenient to install, and can alleviate a kind of welding drill collar of staff's burden.
Its technical scheme is: a kind of welding drill collar, comprise tubular drill collar body, described drill collar body is provided with centre bore, the upper end of described drill collar body connects male connection by the friction welding of narrow gap, drill collar body lower end connects female adapter by the friction welding of narrow gap, is positioned at male connection place on the described drill collar body and is provided with the installation draw-in groove.
The upper end of described drill collar body and male connection welding form the upper end weld seam, and the lower end of described drill collar body and female adapter welding form the lower end weld seam.
Described installation draw-in groove is two and is oppositely arranged and the bottom is the groove on plane.
The shoulder place of described male connection is provided with sealing ring.
After having adopted technique scheme, the beneficial effect that the utility model is obtained is: the utility model is simple in structure, with low cost, the thread turning difficulty of processing is low, long service life, and do thread surface phosphatization, copper facing or cure process, recycling rate of waterused height easily.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
As shown in Figure 1, a kind of welding drill collar, comprise tubular drill collar body 1, described drill collar body 1 is provided with centre bore, the upper end of described drill collar body 1 connects male connection 2 by the friction welding of narrow gap, drill collar body 1 lower end connects female adapter 3 by the friction welding of narrow gap, is positioned at male connection 2 places on the described drill collar body 1 and is provided with installation draw-in groove 4.
The upper end of described drill collar body 1 and male connection 2 welding form upper end weld seam 5, and the lower end of described drill collar body 1 and female adapter 3 welding form lower end weld seam 6.By friction welding make with low cost, the thread turning difficulty of processing is low, long service life.
Described installation draw-in groove 4 is two and is oppositely arranged and the bottom is the groove on plane.Be convenient to the erecting tools clamping by this structure and use, can alleviate staff's burden.
The shoulder place of described male connection 2 is provided with sealing ring 7.Can prevent the extract leakage by sealing ring 7, safe and reliable.
Add man-hour, drill collar body 1 upper end connects male connection 2 in succession by narrow gap welding, the 1 lower end friction welding of drill collar body connects female adapter 3, upper end weld seam 5 and lower end weld seam 6 detect by hardness, magnetic detects, ultrasound examination and mechanical performance sampling Detection, guarantee the weld seam zero defect, mechanical performance satisfies the every performance requirement of welded type heavy weight drill pipe weld seam, drill collar body 1 adopts modified back mechanical performance to satisfy or be higher than the material of E75 grade of steel performance requirement in the API standard, as 40Mn2,37Mn5 etc., male connection 2 and female adapter 3 can adopt modified back mechanical performance to satisfy or be higher than the material of API standard drill collar requirement, as AISI 4145H, AISI 4137H etc. especially are suitable for the processing of big specification drill collar.
The utility model is simple in structure, with low cost, the thread turning difficulty of processing is low, long service life, and do thread surface phosphatization, copper facing or cure process, recycling rate of waterused height easily.
Claims (4)
1. welding drill collar, comprise tubular drill collar body, described drill collar body is provided with centre bore, it is characterized in that: the upper end of described drill collar body connects male connection by the friction welding of narrow gap, drill collar body lower end connects female adapter by the friction welding of narrow gap, is positioned at male connection place on the described drill collar body and is provided with the installation draw-in groove.
2. a kind of welding drill collar according to claim 1 is characterized in that: weld seam on the upper end of described drill collar body and male connection welding form, the lower end of described drill collar body and female adapter welding formation lower end weld seam.
3. a kind of welding drill collar according to claim 1 is characterized in that: described installation draw-in groove is two and is oppositely arranged and the bottom is the groove on plane.
4. a kind of welding drill collar according to claim 1, it is characterized in that: the shoulder place of described male connection is provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149053 CN203175417U (en) | 2013-03-29 | 2013-03-29 | Welding drill collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320149053 CN203175417U (en) | 2013-03-29 | 2013-03-29 | Welding drill collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175417U true CN203175417U (en) | 2013-09-04 |
Family
ID=49072132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320149053 Expired - Fee Related CN203175417U (en) | 2013-03-29 | 2013-03-29 | Welding drill collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175417U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI554356B (en) * | 2014-01-08 | 2016-10-21 | Drill manufacturing method | |
| CN108817646A (en) * | 2018-07-09 | 2018-11-16 | 山东大学 | A method of using linear friction welding technique welding austenitic alloy steel and preparing non magnetic drill collar |
| CN108907447A (en) * | 2018-07-09 | 2018-11-30 | 山东大学 | The axial rub welding technique of high-nitrogen austenitic stainless steel and non magnetic drill collar |
-
2013
- 2013-03-29 CN CN 201320149053 patent/CN203175417U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI554356B (en) * | 2014-01-08 | 2016-10-21 | Drill manufacturing method | |
| CN108817646A (en) * | 2018-07-09 | 2018-11-16 | 山东大学 | A method of using linear friction welding technique welding austenitic alloy steel and preparing non magnetic drill collar |
| CN108907447A (en) * | 2018-07-09 | 2018-11-30 | 山东大学 | The axial rub welding technique of high-nitrogen austenitic stainless steel and non magnetic drill collar |
| WO2020010782A1 (en) * | 2018-07-09 | 2020-01-16 | 山东大学 | Axial friction welding process for high-nitrogen austenitic stainless steel and non-magnetic drill collar |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Du Lin Inventor after: Ba Lin Inventor after: Li Zhenfang Inventor before: Du Lin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: DU LIN TO: DU LIN BA LIN LI ZHENFANG |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |