CN203476229U - Multi-start thread marine riser joint - Google Patents
Multi-start thread marine riser joint Download PDFInfo
- Publication number
- CN203476229U CN203476229U CN201320545432.1U CN201320545432U CN203476229U CN 203476229 U CN203476229 U CN 203476229U CN 201320545432 U CN201320545432 U CN 201320545432U CN 203476229 U CN203476229 U CN 203476229U
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- China
- Prior art keywords
- thread
- joint
- marine riser
- male joint
- start thread
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- Expired - Fee Related
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Abstract
The utility model relates to the field of oil drilling, in particular to a multi-start thread marine riser joint, which comprises a male joint and a female joint, and is characterized in that outer threads of the male joint are multi-start parallel threads, and inner threads of the female joint are also multi-start parallel threads which are matched with outer threads of the male joint. Compared with a traditional single start thread marine riser joint, the multi-start thread marine riser joint improves on-off speed many times, greatly improves on-off efficiency, and reduces on-off difficulty. The multi-start thread marine riser joint is simple in thread structure and reasonable in design.
Description
technical field
The utility model relates to the riser joints that oil drilling is used, specifically a kind of multi start thread formula riser joints.
Background technology
At present, offshore oil probing is becoming the new direction of China and even world oil probing, because marine petroleum exploitation has its complicated geologic structure and rugged environment, and the exploitation parts such as the drilling rod of using as oil exploitation, tool joint, marine riser and riser joints are often because damage needs to change, in a lot of situations, changing these parts is all to carry out under water, and this just need to improve intensity and the handling speed of corresponding component.
As shown in Figures 1 and 2, male joint structure and female joint structure for existing marine riser, the external screw thread of male joint and the internal thread of female joint are all single thread structures of spiraling from top to bottom, male joint and female joint by external screw thread together with internal thread rotation stressed joint, the screw thread of ten multi-turns need to have been revolved just and can screw, this is quite slow ratesss of loading & discharge for changing under water parts, the developing direction that is unfavorable for offshore oil probing, in order to meet new developing direction, need to make improvements existing helicitic texture.
Summary of the invention
The purpose of this utility model is to provide a kind of multi start thread formula riser joints, can solve the problem in background technology, improves the upper break-out speed of riser joints.
In order to solve the problems of the technologies described above adopted technical scheme, be: a kind of multi start thread formula riser joints, comprise male joint and female joint, it is characterized in that, the external screw thread of male joint is multi-thread parallel thread, and the internal thread of female joint is also the multi-thread parallel thread mating with the external screw thread of male joint.
Above-mentioned multi-thread parallel thread structure is six line parallel screw threads preferably.
The beneficial effects of the utility model are: between the male joint of marine riser and female joint, by multi-thread parallel thread, screw connection, compare with traditional single thread riser joints, on it, the speed of shackle has improved many times, has greatly improved upper shackle efficiency, has reduced upper shackle difficulty.The helicitic texture of riser joints of the present utility model is simple, reasonable in design.
Accompanying drawing explanation
Fig. 1, existing riser pin structure chart;
Fig. 2, existing riser box structure chart;
Fig. 3, male joint structure chart of the present utility model;
Fig. 4, female joint structure chart of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, in conjunction with existing riser joints, the specific embodiment of the present utility model is further described.
Shown in Fig. 3 and Fig. 4, for structure chart of the present utility model, a kind of multi start thread formula riser joints, specifically comprise the external screw thread 3 of male joint 1, female joint 2, male joint 1, the internal thread 4 of female joint 2, external screw thread 3 is a kind of multi-thread parallel thread specifically, and internal thread 4 is also a kind of multi-thread parallel thread being used in conjunction with external screw thread 3.
Shown in Fig. 1 and Fig. 2, be male joint 1 and the female joint 2 of marine riser of the prior art, the external screw thread 5 of male joint 1 and the internal thread 6 of female joint are all single thread structures.
The specific embodiment: in the present embodiment, external screw thread 3 and internal thread 4 preferably adopt six line parallel screw threads.By male joint 1 female joint 2 of the present utility model, respectively to being welded in the two ends of marine riser, then the internal thread 4 of the external screw thread by male joint 13 and the female joint 2 of another section of marine riser screws and links together, and this has just completed the upper button process of riser joints.In the time the male joint 1 damaging or female joint 2 need to being changed, only the joint of damage need be outwarded winding by six line parallel screw threads, by multi-thread parallel thread of the present utility model, can soon riser joints be unloaded, this has just completed the shackle process of riser joints.Owing to having adopted six line parallel screw threads, the length of each line screw thread can shorten to original single threaded sixth, and on the utility model, the speed of shackle is traditional six times.
The utility model is simple in structure, and multi-thread parallel thread has improved the upper break-out speed of riser joints greatly, has saved the time, has improved efficiency.
Claims (2)
1. a multi start thread formula riser joints, comprise male joint (1) and female joint (2), it is characterized in that: the external screw thread (3) of male joint (1) is multi-thread parallel thread, the internal thread (4) of female joint (2) is also the multi-thread parallel thread mating with the external screw thread of male joint.
2. a kind of multi start thread formula riser joints according to claim 1, is characterized in that: above-mentioned multi-thread parallel thread is six line parallel screw threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545432.1U CN203476229U (en) | 2013-09-04 | 2013-09-04 | Multi-start thread marine riser joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320545432.1U CN203476229U (en) | 2013-09-04 | 2013-09-04 | Multi-start thread marine riser joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203476229U true CN203476229U (en) | 2014-03-12 |
Family
ID=50224576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320545432.1U Expired - Fee Related CN203476229U (en) | 2013-09-04 | 2013-09-04 | Multi-start thread marine riser joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203476229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202400A (en) * | 2020-08-26 | 2021-01-08 | 四川蓝科新能源开发有限公司 | High-conversion-rate and high-service-life dual-glass assembly |
-
2013
- 2013-09-04 CN CN201320545432.1U patent/CN203476229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202400A (en) * | 2020-08-26 | 2021-01-08 | 四川蓝科新能源开发有限公司 | High-conversion-rate and high-service-life dual-glass assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20140312 Termination date: 20170904 |