CN202165024U - Lift type safe connector - Google Patents
Lift type safe connector Download PDFInfo
- Publication number
- CN202165024U CN202165024U CN2011201318051U CN201120131805U CN202165024U CN 202165024 U CN202165024 U CN 202165024U CN 2011201318051 U CN2011201318051 U CN 2011201318051U CN 201120131805 U CN201120131805 U CN 201120131805U CN 202165024 U CN202165024 U CN 202165024U
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- cylindrical
- top connection
- connector
- cylinder
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Abstract
The utility model discloses a lift type safe connector, which is suitable for oil field underground pipe columns and composed of an upper connector (1), shearing pins (2), a lower connector (3), sealing rings (4) and torque pins (5). The excircle of the upper connector (1) is a step-shaped cylindrical surface, the middle of the excircle is provided with a group of radial blind holes and a group of axial grooves (6) respectively. A group of ring-shaped grooves is arranged on a small excircle on the lower portion of the excircle, and the sealing rings (4) are arranged in the group of ring-shaped grooves. An inner hole of the lower connector (3) is a step-shaped hole, a group of radial thread through holes is arranged on a large hole at the upper end of the lower connector (3), and the lower connector (3) is sleeved on the excircle at the lower end of the upper connector (1). A part of the radial thread through holes on the large hole at the upper end of the lower connector (3) are provided with the shearing pins (2) to be matched with the radial blind holes on the cylindrical surface in the middle of the excircle of the upper connector (1), the other part of the radial thread through holes are provided with the torque pins (5) to be matched with the axial grooves (6) on the cylindrical surface of the middle of the excircle of the upper connector (1). The lift type safe connector has the advantages of transferring torque, being simple in structure and the like.
Description
One, technical field:
The utility model relates to a kind of pull-type safety joint, is a kind of instrument that is used for the oil field down-hole string, belongs to oil field downhole tool class.
Two, background technology:
At present; The safety joint that the oil field is commonly used in the down-hole string has two kinds: a kind of is the peg type safety joint, and the upper lifting pipe post is cut off pin disengagement tubing string when tubing string is met card, proposes the tubing string more than the stuck point; So that handle the tubing string that card is met in the bottom; This structure can not transfer torque, and when the well casing post need rotate construction operation instantly, consequent moment of torsion was prone to cause pin to cut off to cause the construction failure.Another kind is to adopt the safety joint of left-hand thread formula, the drawback of this structure be because get rusty, fouling, the rate of outwarding winding when causing tubing string to meet card is not high, equally also exist can not transfer torque drawback.The patent No. 200720103476.3 provides a kind of pull-type safety joint, though this safety joint can transfer torque, and complex structure, manufacturing cost is high.
Three, summary of the invention:
The purpose of the utility model is: provide a kind of can transfer torque, simple in structure, the safety joint of low cost of manufacture.
The utility model be achieved in that the utility model by top connection, cut off pin, lower contact, sealing ring and the moment of torsion pin is formed; There is the oil pipe internal thread upper end of top connection inner via hole; The lower end is a cylindrical hole, and its cylindrical is the stairstepping face of cylinder that reduces successively down in last, and one group of radial blind holes and one group of axial groove are arranged respectively on the face of cylinder at middle part; On the face of cylinder of the minimum diameter of bottom; One group of cannelure is arranged, built-in ring, there is oil tube external thread the cylindrical lower end of lower contact; Its endoporus is the stepped bore that reduces successively down in last; One group of radially tapped through hole is arranged on the macropore of upper end, lower contact be sleeved on the top connection bottom in, on the cylindrical of minor diameter, the part on the macropore of lower contact upper end radially tapped through hole is installed one group and is cut off that the radial blind holes on the face of cylinder matches in the middle part of pin and the top connection cylindrical; Another part radially tapped through hole is installed one group of moment of torsion pin and is matched the endoporus at lower contact middle part and top connection bottom minimum diameter cylindrical and sealing ring formation sealing pair with one group of axial groove on the face of cylinder, top connection cylindrical middle part.
The utility model beneficial effect is: can transfer torque, and simple in structure, easy to manufacture, cost is lower.
Four, description of drawings:
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the sectional view of Fig. 1.
In the accompanying drawing: the 1-top connection, 2-cuts off pin, 3-lower contact, 4-sealing ring, 5-moment of torsion pin, 6-axial groove
Five, the specific embodiment:
Below in conjunction with accompanying drawing the specific embodiment of the utility model is done further to set forth:
The utility model by top connection (1), cut off pin (2), lower contact (3), sealing ring (4) and moment of torsion pin (5) is formed; There is the oil pipe internal thread upper end of top connection (1) inner via hole; Its cylindrical is the stairstepping face of cylinder that reduces successively down in last, one group of radial blind holes and one group of axial groove (6) is arranged, on the face of cylinder at middle part respectively on the roundlet cylinder of bottom; One group of cannelure is arranged; Built-in ring (4), the cylindrical upper end of lower contact (3) is a face of cylinder, there is oil tube external thread the lower end; Its endoporus is the stepped bore that reduces successively down in last; One group of radially tapped through hole is arranged on the macropore of upper end, and lower contact (3) is sleeved in top connection (1) bottom, on the cylindrical of minor diameter, and the part on the macropore of lower contact (3) upper end radially tapped through hole is installed and cut off that one group of radial blind holes on the face of cylinder matches in the middle part of pin (2) and top connection (1) cylindrical; Another part radially tapped through hole mounting torque pin (5) matches the endoporus at lower contact (3) middle part and the cylindrical of top connection (1) lower end minimum diameter and sealing ring (4) formation sealing pair with one group of axial groove (6) on the face of cylinder, top connection (1) cylindrical middle part.
Claims (1)
1. pull-type safety joint; By top connection (1), cut off pin (2), lower contact (3), sealing ring (4) and moment of torsion pin (5) is formed; It is characterized in that: there is the oil pipe internal thread upper end of top connection (1) inner via hole, and cylindrical is the stairstepping face of cylinder that reduces successively down in last, and one group of radial blind holes and one group of axial groove (6) are arranged respectively on the face of cylinder at middle part; On the minimum diameter face of cylinder of bottom; One group of cannelure is arranged, built-in ring (4), there is oil tube external thread the cylindrical lower end of lower contact (3); Its endoporus is the stepped bore that reduces successively down in last; One group of radially tapped through hole is arranged on the macropore of upper end, and lower contact (3) is sleeved in the top connection (1), on the cylindrical of minor diameter, and the part on the large aperture, lower contact (3) upper end radially tapped through hole is installed one group and cut off that the radial blind holes on the face of cylinder matches in the middle part of pin (2) and top connection (1) cylindrical; Another part radially tapped through hole is installed one group of moment of torsion pin (5) and is matched the endoporus at lower contact (3) middle part and the cylindrical of top connection (1) lower end minimum diameter and sealing ring (4) formation sealing pair with one group of axial groove (6) on the face of cylinder, top connection (1) cylindrical middle part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201318051U CN202165024U (en) | 2011-04-17 | 2011-04-17 | Lift type safe connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201318051U CN202165024U (en) | 2011-04-17 | 2011-04-17 | Lift type safe connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202165024U true CN202165024U (en) | 2012-03-14 |
Family
ID=45800859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201318051U Expired - Fee Related CN202165024U (en) | 2011-04-17 | 2011-04-17 | Lift type safe connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202165024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503706A (en) * | 2017-10-12 | 2017-12-22 | 中国海洋石油总公司 | A kind of underwater well workover assembly |
| CN111088973A (en) * | 2020-01-10 | 2020-05-01 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing well completion pipe string and process for high-temperature and high-pressure oil and gas well |
-
2011
- 2011-04-17 CN CN2011201318051U patent/CN202165024U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107503706A (en) * | 2017-10-12 | 2017-12-22 | 中国海洋石油总公司 | A kind of underwater well workover assembly |
| CN111088973A (en) * | 2020-01-10 | 2020-05-01 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing well completion pipe string and process for high-temperature and high-pressure oil and gas well |
| CN111088973B (en) * | 2020-01-10 | 2023-07-07 | 新疆恒智伟业石油工程技术开发有限公司 | Multifunctional fracturing completion pipe string and process for high-temperature high-pressure oil-gas well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120314 Termination date: 20130417 |