CN202202823U - Track type safety joints - Google Patents
Track type safety joints Download PDFInfo
- Publication number
- CN202202823U CN202202823U CN2011201289646U CN201120128964U CN202202823U CN 202202823 U CN202202823 U CN 202202823U CN 2011201289646 U CN2011201289646 U CN 2011201289646U CN 201120128964 U CN201120128964 U CN 201120128964U CN 202202823 U CN202202823 U CN 202202823U
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- China
- Prior art keywords
- safety joint
- lower contact
- joint
- track type
- jarring
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Abstract
The utility model provides two track type safety joints, which belong to underground well repairing assistant tools and are suitable for being used for releasing a drilling tool when the whole drilling tool is blocked in a well in the well repairing and fishing process of an oil field. One is an ordinary improved track type safety joint, and the other is a jarring track type safety joint. Compared with the present track type safety joint, a lengthened part and sealing rings on the lengthened part are added to the ordinary improved track type safety joint, and the ordinary improved track type safety joint achieves the effects of steady connecting structure of an upper joint and a lower joint and reliable sealing of the sealing rings. A lock ring is added to the lower section of a lower joint of the jarring track type safety joint, a spare sealing ring is added to the lower part of a pin hole of the jarring track type safety joint, and a friction ring is arranged at the middle lower part of an upper joint of the jarring track type safety joint. When a dropped object is fished by the fishing tool to be unlocked, a pin is vigorously uplifted and is snipped, and then a tubular column is lowered, is pressurized and is then uplifted; since the lock ring and the friction ring are interacted, jarring is produced, and repeated jarring is beneficial to the unlocking; and the safety joint can be continuously used for construction after the pin is snipped.
Description
Technical field:
The purpose of the utility model provides the safety joint of two kinds of down-hole well workover aids, uses when being applicable in the oil field well workover salvaging process that whole drilling tool is stuck and slipping out of the hand in well the time.
Background technology:
Adopt two types of screw thread formula safety joint or rail mounted safety joints when the oil field well workover is salvaged at present; Be connected the drilling tool bottom; When the activity unfreezing is invalid after dragging for junk, use when fishing tool is slipped out of the hand on fishing tool top; Wherein the safety joint of screw thread formula relies on the drilling tool back-off to open the screw thread of safety joint, reaches the purpose that drilling tool and fishing tool are slipped out of the hand; The rail mounted safety joint rely on cutting off the pin back rotate, on carry drilling tool the lock dog orbital motion slipped out of the hand.The safety joint of current track formula is slipped out of the hand easily, but its sealing performance is bad, and easy leakage causes sand card accident after the drilling tool circulation short circuit.Just can't continue construction after current track formula safety joint pin is cut off in addition, need trip out drilling tool and change safety joint.The present invention proposes two kinds of rail mounted safety joints for this reason.
Summary of the invention:
The purpose of the utility model provides two kinds of rail mounted safety joints, and a kind of is the safety joint of common modified rail mounted, and another kind is the safety joint of jarring type rail mounted.Common modified rail mounted safety joint (like Fig. 1) is made up of top connection 1, lower contact 2, lock dog 3, rail groove 4, elongated portion 5, pin hole 6, last sealing ring 7, lower seal 12, and lower contact 2 lower ends are pin thread, upwards divide three sections and are tapered; In through hole is arranged is flow channels 8; Hypomere has pin hole 6, lower seal 12, and interlude is evenly distributed in the axial rail groove in four roads 4, and wherein symmetrical twice groove upwards prolongs; Symmetrical in addition twice groove sealing; The bottom of closed orbit groove has with prolonging and two lock dogs switching-over grooves that rail groove communicates, and epimere diameter minimum is an elongated portion 5, and last sealing ring 7 is arranged on it.Top connection 1 upper end is a box, and the bottom is a tubular, and there is pin hole 6 its underpart, and there are two lock dogs 3 middle and lower part, and lock dog and rail groove 4 cooperatively interact and realize the effect of top connection 1 and lower contact spacing slip and transfer torque about in the of 2.Tubular top internal diameter diminishes and the elongated portion matched in clearance.Comparing with the safety joint of current track formula has increased elongated portion 5 and has gone up sealing ring 7, and its effect is that upper and lower joint connecting structure is stable, and the sealing ring sealing is reliable, reduces the lock of tool drilling that brings because of the safety joint leakage.
Jarring type rail mounted safety joint (like Fig. 2) is made up of top connection 1, lower contact 2, lock dog 3, rail groove 4, pin hole 6, sealing ring 7, lock ring 9, drag ring 10, and lower contact 2 lower ends are pin thread, upwards divides two sections and is tapered; In through hole is arranged is flow channels 8; Reducing place bigger diameter end has drag ring 10, and top connection 1 upper end is a box, and the bottom is a tubular; There is pin hole 6 its underpart; There is lock ring 9 the top connection tubular inside corresponding with lower contact reducing place, and there are two lock dogs 3 middle and lower part, and lock dog and rail groove 4 cooperatively interact.Compare with the safety joint of common modified rail mounted: jarring type rail mounted safety joint lower contact does not have elongated portion 5, but two lock dog switching-over grooves in its stage casing are dug at the middle part, not in the bottom; Jarring type safety joint drag ring 10 is stuck in the cannelure of lower contact hypomere, and its outstanding lower contact body part is two inclined-planes, and top slope, inclined-plane is slow, and following slope is steep.The upper and lower joint of this structure connects stable; Sealing ring sealing is reliable, when fishing tool drags for the junk unfreezing, carries on energetically and cuts off pin suddenly, and lock dog slides at closed orbit and produces jarring for the first time; Transfer tubing string and press down 10 distortion of lock ring 9 extrusion friction rings; Lock ring along the drag ring gentle slope contact surface steadily cross drag ring, drag ring elastic recoil, lock ring 9 extrusion friction rings 10 distortion when proposing on once more; When surpassing certain load lock ring along the drag ring abrupt slope contact surface cross drag ring suddenly and produce jarring, jarring helps unfreezing repeatedly.When this safety joint is used to connect the milling tool construction; After pin is cut off for a certain reason; Can pressurize for fear of one trip and to make the drag ring gentle slope steadily cross drag ring to replace pin that safety joint is drawn back causing seal failure; At this moment backup seal has just played effect, even also can continue construction under the situation that other sealing rings lost efficacy.
Description of drawings:
Fig. 1: common modified rail mounted safety joint structural representation
1, top connection 2, lower contact 3, lock dog 4, rail groove 5, elongated portion 6, pin hole 7, last sealing ring 8, flow channels 12 lower seal
Fig. 2: jarring type rail mounted safety joint structural representation
1, top connection 2, lower contact 3, lock dog 4, rail groove 6, pin hole 7, sealing ring 8, flow channels 9, lock ring 10, drag ring 11, backup seal
The specific embodiment:
Common modified rail mounted safety joint (like Fig. 1) is made up of top connection 1, lower contact 2, lock dog 3, rail groove 4, elongated portion 5, pin hole 6, last sealing ring 7, lower seal 12, and lower contact 2 lower ends are pin thread, upwards divide three sections and are tapered; In through hole is arranged is flow channels 8; Hypomere has pin hole 6, lower seal 12, and interlude is evenly distributed in the axial rail groove in four roads 4, and wherein symmetrical twice groove upwards prolongs; Symmetrical in addition twice groove sealing; The bottom of closed orbit groove has with prolonging and two lock dogs switching-over grooves that rail groove communicates, and epimere diameter minimum is an elongated portion 5, and last sealing ring 7 is arranged on it.Top connection 1 upper end is a box, and the bottom is a tubular, and there is pin hole 6 its underpart, and there are two lock dogs 3 middle and lower part, and lock dog and rail groove 4 cooperatively interact and realize the effect of top connection 1 and lower contact spacing slip and transfer torque about in the of 2.Tubular top internal diameter diminishes and the elongated portion matched in clearance.Lower contact 2 installs the upper and lower sealing ring of corresponding size during use; Top connection is inserted in lower contact; Lock dog 3 along prolonging that rail groove slides into the rail groove bottom and rotation changes closed orbit over to and the pin hole of the upper and lower joint that aligns 6 from the switching-over groove, inserts the pin identical with the pin hole diameter.When top connection 1 links to each other with the top drilling tool, lower contact 2 links to each other with fishing tool, transmits the drilling tool moments of torsion by lock dog 3, and pin transmits the drilling tool pulling force, pressure is realized driving fishing tool salvaging junk through the safety joint drilling tool.When fishing tool drags for the junk unfreezing when not becoming to slip out of the hand, carry the load of cutting off that surpasses pin on energetically and cut off pin, rotate drilling tool again and drive lock dog 3 and track and put forward the purpose of extracting the fishing tool of realizing slipping out of the hand out to prolonging through the switching-over groove from airtight track.When this safety joint is used to connect the milling tool construction,, reduce the lock of tool drilling that causes because of leakage because its stable sealing ring braced structures can effectively prolong the sealing period of validity.
Jarring type rail mounted safety joint (like Fig. 2) is made up of top connection 1, lower contact 2, lock dog 3, rail groove 4, pin hole 6, sealing ring 7, lock ring 9, drag ring 10, and lower contact 2 lower ends are pin thread, upwards divides two sections and is tapered; In through hole is arranged is flow channels 8; Reducing place bigger diameter end has drag ring 10, and top connection 1 upper end is a box, and the bottom is a tubular; There is pin hole 6 its underpart; There is lock ring 9 the top connection tubular inside corresponding with lower contact reducing place, and there are two lock dogs 3 middle and lower part, and lock dog and rail groove 4 cooperatively interact.Jarring type rail mounted safety joint lower contact does not have elongated portion 5, but two lock dog switching-over grooves in its stage casing are dug at the middle part, not in the bottom; Jarring type safety joint lower contact hypomere has lock ring 9, pin hole bottom to be provided with backup seal 11; There is drag ring 10 the top connection middle and lower part, and drag ring 10 is stuck in the cannelure of lower contact hypomere, and its outstanding lower contact body part is two inclined-planes; Top slope, inclined-plane is slow, and following slope is steep.Lower contact 2 installs the sealing ring 7 of corresponding size during use; Drag ring 10 is installed in the cannelure of lower contact hypomere; Top connection is inserted in lower contact; Lock dog 3 along prolonging that rail groove slides into the rail groove bottom and rotation changes closed orbit over to and the pin hole of the upper and lower joint that aligns 6 from the switching-over groove, inserts the pin identical with the pin hole diameter.When top connection 1 links to each other with the top drilling tool, lower contact 2 links to each other with fishing tool, transmits the drilling tool moments of torsion by lock dog 3, and pin transmits the drilling tool pulling force, realizes driving fishing tool salvaging junk through the safety joint drilling tool.When fishing tool drags for the junk unfreezing, carry on energetically and cut off pin suddenly; Lock dog slide to produce jarring for the first time at closed orbit, transfer tubing string and press down 10 distortion of lock ring 9 extrusion friction rings, lock ring along the drag ring gentle slope contact surface steadily cross drag ring; The drag ring elastic recoil; Lock ring 9 extrusion friction rings 10 distortion when carrying on once more, when surpassing certain load lock ring along the drag ring abrupt slope contact surface cross drag ring suddenly and produce jarring, jarring helps unfreezing repeatedly.When this safety joint is used to connect the milling tool construction; After pin is cut off for a certain reason; Can pressurize for fear of one trip and to make the drag ring gentle slope steadily cross drag ring to replace pin that safety joint is drawn back causing seal failure; At this moment backup seal has just played effect, even also can continue construction under the situation that other sealing rings lost efficacy.
Claims (6)
1. the safety joint of common modified rail mounted is made up of top connection (1), lower contact (2), lock dog (3), rail groove (4), elongated portion (5), pin hole (6), last sealing ring (7), lower seal (12), and lower contact (2) lower end is a pin thread, upwards divides three sections and is tapered; In through hole is arranged is flow channels (8); Top connection (1) upper end is a box, and the bottom is a tubular, and there is pin hole (6) its underpart; There are two lock dogs (3) middle and lower part, and lock dog and rail groove (4) cooperatively interact.
2. common modified rail mounted according to claim 1 safety joint; The epimere diameter minimum that it is characterized in that lower contact (2) is elongated portion (5); Last sealing ring (7), lower seal (12) are arranged on it, and the tubular top internal diameter of top connection (1) diminishes and the elongated portion matched in clearance.
3. the safety joint of jarring type rail mounted is made up of top connection (1), lower contact (2), lock dog (3), rail groove (4), pin hole (6), sealing ring (7), lock ring (9), drag ring (10), and lower contact (2) lower end is a pin thread, upwards divides two sections and is tapered; In through hole is arranged is flow channels (8); Reducing place bigger diameter end has drag ring (10), and top connection (1) upper end is a box, and the bottom is a tubular; There is pin hole (6) its underpart; There is lock ring (9) the top connection tubular inside corresponding with lower contact reducing place, and there are two lock dogs (3) middle and lower part, and lock dog and rail groove (4) cooperatively interact.
4. jarring type rail mounted according to claim 3 safety joint is characterized in that two lock dog switching-over grooves in lower contact stage casing are dug at the middle part.
5. jarring type rail mounted according to claim 3 safety joint is characterized in that drag ring (10) is stuck in the cannelure of lower contact hypomere, and the part of its outstanding lower contact body is two inclined-planes, and top slope, inclined-plane is slow, and following slope is steep.
6. jarring type rail mounted according to claim 3 safety joint is characterized in that lower contact pin hole bottom is provided with backup seal (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201289646U CN202202823U (en) | 2011-04-28 | 2011-04-28 | Track type safety joints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201289646U CN202202823U (en) | 2011-04-28 | 2011-04-28 | Track type safety joints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202202823U true CN202202823U (en) | 2012-04-25 |
Family
ID=45966952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201289646U Expired - Fee Related CN202202823U (en) | 2011-04-28 | 2011-04-28 | Track type safety joints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202202823U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481421A (en) * | 2014-11-06 | 2015-04-01 | 中国石油天然气集团公司 | Curve passing drilling anti-seizing nipple |
| CN112753595A (en) * | 2020-12-25 | 2021-05-07 | 青海裕福畜牧业发展有限公司 | Pig raising fence with cleaning function and built steel structure and cleaning method thereof |
-
2011
- 2011-04-28 CN CN2011201289646U patent/CN202202823U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481421A (en) * | 2014-11-06 | 2015-04-01 | 中国石油天然气集团公司 | Curve passing drilling anti-seizing nipple |
| CN112753595A (en) * | 2020-12-25 | 2021-05-07 | 青海裕福畜牧业发展有限公司 | Pig raising fence with cleaning function and built steel structure and cleaning method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Free format text: FORMER OWNER: YU YAPENG CHEN QINGHUA Effective date: 20121227 Owner name: BEIJING YILONG HENGYE OIL ENGINEERING TECHNICAL CO Free format text: FORMER OWNER: CUI CHAOXUAN Effective date: 20121227 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 457164 PUYANG, HENAN PROVINCE TO: 100086 HAIDIAN, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20121227 Address after: 100086 Beijing city in Haidian District Qingyun Mantingfangyuan District 2 Building 4 layer 409 Patentee after: BEIJING YILONG HENGYE PETROLEUM ENGINEERING TECHNOLOGY CO., LTD. Address before: 457164, Puyang, Henan Province Liu Tun downhole oil production zone Patentee before: Cui Chaoxuan Patentee before: Yu Yapeng Patentee before: Chen Qinghua |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160705 Address after: Study on the technology of 252429 Shandong city of Liaocheng province Shenxian Guyun town oil three factory Patentee after: Cui Chaoxuan Patentee after: Yu Yapeng Patentee after: Chen Qinghua Address before: 100086 Beijing city in Haidian District Qingyun Mantingfangyuan District 2 Building 4 layer 409 Patentee before: BEIJING YILONG HENGYE PETROLEUM ENGINEERING TECHNOLOGY CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20160428 |