CN207296954U - Tubing string Anti-breaking wellhead Junk prevention device - Google Patents
Tubing string Anti-breaking wellhead Junk prevention device Download PDFInfo
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- CN207296954U CN207296954U CN201721086861.1U CN201721086861U CN207296954U CN 207296954 U CN207296954 U CN 207296954U CN 201721086861 U CN201721086861 U CN 201721086861U CN 207296954 U CN207296954 U CN 207296954U
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- slips
- mandrel
- lower contact
- tubing string
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Abstract
It the utility model is related to oil and gas field downhole tool, more particularly to tubing string Anti-breaking wellhead Junk prevention device.The mandrel top connection lower end outside spline of the tubing string Anti-breaking wellhead Junk prevention device on the inside of mandrel lower contact with being set with, retaining set is sleeved on the outside of mandrel lower contact, snap ring is fitted in retaining set outer side slot, cone internal thread connecting mandrel lower contact external screw thread, the space that spring presses and is sleeved on cone between retaining set, slips is fitted in slips cover corresponding groove, slips pressure mounting of the spring in slip groove with slips cover corresponding groove pressure simultaneously, centralizer body threaded upper ends connect slips cover, body resistance-strengthening tablets are fitted in centralizer body outer side slot upper and lower ends respectively by slips cover lower end and connection set upper side pressing, slide external threading connects connector sleeve, vulcanize packing element vulcanization internal thread connecting sliding rail set external screw thread on corresponding steel part, protective case is threadedly coupled by sliding pin with mandrel lower contact.Beneficial effect：Tubing string break it is de- after actively formed it is secondary set, well head debris drops and prevents Ka Jing.
Description
Technical field
The utility model category oil and gas field downhole tool, more particularly to a kind of tubing string is anti-breaking and the protection pipe of wellhead anti-falling
Column Anti-breaking wellhead Junk prevention device.
Background technology
At present, tubing string Anti-breaking wellhead Junk prevention device used in home and abroad, being designed in structure mainly has three kinds：When
The Junk prevention tubing string that Y445 packers, sleeve hydraulic are given up with pressure release ball seat composition；Second, silk plug+screen casing+check valve+Y441 envelopes
Every the compound tube string of device assembly+short circuit of giving up；Third, being connected by anti-drop device with oil pipe, put always in groups by anchor and lock
Into, tubing string break it is de- after because grappling is completed in the change of speed.First two hydraulic releasing type, tubing string later stage salvage difficult, deblocking difficulty；
The third falling speed to tubing string has strict demand, is easily malfunctioned because field operation is lack of standardization.
Utility model content
For the drawbacks described above of the prior art, tubing string Anti-breaking wellhead Junk prevention device provided by the utility model, solves
Above-mentioned technical problem, there is provided it is a kind of secondary set actively to be formed within the extremely short time and prevent tubing string from dropping, while prevent well
Mouthful debris drop card well accident, have the function of active set, wellhead anti-falling, the tubing string for avoiding casing, tubing string and device from being damaged
Anti-breaking wellhead Junk prevention device.
In order to achieve the above object, the utility model provides following technical solution：
Tubing string Anti-breaking wellhead Junk prevention device includes：Mandrel top connection, retaining set, mandrel lower contact, snap ring, slips cover,
Spring, cone, slips, slips spring, centralizer body, body resistance-strengthening tablets, connector sleeve, slide set, vulcanization packing element, protective case, sliding pin, it is described
Mandrel top connection lower end outside spline on the inside of mandrel lower contact with being set with, and retaining set is sleeved on the outside of mandrel lower contact, snap ring pressure
In retaining set outer side slot, cone internal thread connecting mandrel lower contact external screw thread, spring presses and is sleeved on cone and retaining set
Between space, slips is fitted in slips cover corresponding groove, slips pressure mounting of the spring in slip groove with slips cover corresponding groove pressure simultaneously,
Centralizer body threaded upper ends connect slips cover, body resistance-strengthening tablets be fitted in centralizer body outer side slot upper and lower ends respectively by slips cover lower end and
Connect set upper side pressing, slide external threading connection connector sleeve, vulcanization packing element vulcanization internal thread connecting sliding rail set on corresponding steel part
External screw thread, protective case are threadedly coupled by sliding pin with mandrel lower contact.
The beneficial effects of the utility model are：Tubing string Anti-breaking wellhead Junk prevention device provided by the utility model, tubing string break
Actively formed after de- it is secondary set, well head debris drops and prevents Ka Jing.
In order to be further understood that the feature of the utility model and technology contents, refer to new below in connection with this practicality
The detailed description of type and attached drawing, but attached drawing is only provided and used with reference to explanation, is not used for being any limitation as the utility model.
Brief description of the drawings
Below in conjunction with the accompanying drawings, by the way that specific embodiment of the present utility model is described in detail, the utility model will be made
Technical solution and other beneficial effects are apparent.
Fig. 1 is the structure diagram of the utility model tubing string Anti-breaking wellhead Junk prevention device.
In attached drawing, 1- mandrel top connections；2- retaining sets；3- mandrel lower contacts；4- snap rings；5- slips covers；6- springs；7-
Cone；8- slips；9- slips springs；10- centralizer bodies；11- body resistance-strengthening tablets (wiper block)；12- connector sleeves；13- slide sets；14- sulphur
Change packing element；15- protective cases；16- sliding pins.
Embodiment
The technological means and its effect taken for further elaboration the utility model, below in conjunction with the utility model
Preferred embodiment and its attached drawing are described in detail.
Referring to Fig. 1, tubing string Anti-breaking wellhead Junk prevention device includes：Under 1 lower end outside spline of mandrel top connection and mandrel
The inner side of connector 3 suit, retaining set 2 are sleeved on the outside of mandrel lower contact 3, and snap ring 4 is fitted in retaining set outer side slot, in cone 7
3 external screw thread of mandrel lower contact, the space that spring 6 presses and is sleeved on cone 7 between retaining set 2 are threadedly coupled, slips 8 is fitted in
In 5 corresponding groove of slips cover, slips spring 9 is fitted in 8 groove of slips with 5 corresponding groove pressure of slips cover simultaneously, 10 threaded upper ends of centralizer body
Connect slips cover 5, body resistance-strengthening tablets (wiper block) 11 be fitted in 10 outer side slot of centralizer body upper and lower ends respectively by 5 lower end of slips cover and
12 upper end pressing of connector sleeve, slide set 13 are threadedly coupled connector sleeve 12, and vulcanization packing element 14 vulcanizes the internal thread on corresponding steel part and connects
Connect slide and cover 13 external screw threads, protective case 15 is threadedly coupled by sliding pin 16 with mandrel lower contact 13.
Operation principle：
Set：Mandrel top connection 1 is connect after tubing string goes into the well and reach setting position, positive rotation half within upper lifting pipe post 500mm
More than circle tubing string is transferred again, 1 lower end of mandrel top connection is hung in 3 upper end of mandrel lower contact on half the circumference of the sleeve where it joins the shoulder, in band moving mandrel lower contact 3
OK, sliding pin 16 is made to skid off slide set 13,1 lower end of decentralization tubing string mandrel top connection is pressed in 3 lower end of mandrel lower contact band on half the circumference of the sleeve where it joins the shoulder
3 downlink of moving mandrel's lower contact, while mandrel lower contact 3 covers 2 downlinks compression spring 6, the outer cone of cone 7 with movable cone 7 and retaining
The inner conical surface that face enters slips 8 supports slips 8 and slips 8 is anchored on internal surface of sleeve pipe and completes grappling, while 15 He of protective case
Sliding pin 16 drives downlink release vulcanization packing element 14 vulcanization packing element 14 is dropped from formation on internal surface of sleeve pipe is enclosed in by mandrel lower contact 3
The barrier of debris, so far device, which is set, finishes.
Deblocking：Upper lifting pipe post, half the circumference of the sleeve where it joins the shoulder is hung half the circumference of the sleeve where it joins the shoulder in 3 upper end of mandrel lower contact and is driven outside its lower end of 1 uplink of mandrel top connection
3 uplink of mandrel lower contact, mandrel lower contact 3 makes cone 7 be separated with slips 8 with 7 uplink of movable cone compression spring 6, in slips bullet
Slips 8 withdraws original state, device deblocking under the action of spring 9；
Anti-breaking, Junk prevention：Oil pipe breaks de- rear device with pipe string whereabouts, and cone 7 can be in pole under the action of spring 6 at this time
Slips 8 is set to be supported to form grappling into 8 inner conical surface of slips in the short time, as the tenesmus grappling of pipe string can more firmly have
Effect, while vulcanize that packing element is self-styled to form effective junk barrier on casing wall.
Device can bear pushing or the drop-down load of 800KN.
The above, is only specific embodiment of the present utility model, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art can readily occur in change in the technical scope that the utility model discloses
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model should be described with power
Subject to the protection domain that profit requires.
Claims (1)
1. tubing string Anti-breaking wellhead Junk prevention device, it is characterised in that including：Mandrel top connection, retaining set, mandrel lower contact, card
Ring, slips cover, spring, cone, slips, slips spring, centralizer body, body resistance-strengthening tablets, connector sleeve, slide set, vulcanization packing element, protection
Set, sliding pin, for the mandrel top connection lower end outside spline with being set with the inside of mandrel lower contact, retaining set is sleeved on mandrel lower contact
Outside, snap ring are fitted in retaining set outer side slot, and cone internal thread connecting mandrel lower contact external screw thread, spring presses and is sleeved on cone
Space between body and retaining set, slips is fitted in slips cover corresponding groove, slips pressure mounting of the spring in slip groove with slips cover
Corresponding groove pressure simultaneously, centralizer body threaded upper ends connection slips cover, body resistance-strengthening tablets be fitted in centralizer body outer side slot upper and lower ends respectively by
Slips cover lower end and connection set upper side pressing, slide external threading connection connector sleeve, vulcanization packing element vulcanization interior spiral shell on corresponding steel part
Line connecting sliding rail covers external screw thread, and protective case is threadedly coupled by sliding pin with mandrel lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086861.1U CN207296954U (en) | 2017-08-23 | 2017-08-23 | Tubing string Anti-breaking wellhead Junk prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721086861.1U CN207296954U (en) | 2017-08-23 | 2017-08-23 | Tubing string Anti-breaking wellhead Junk prevention device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207296954U true CN207296954U (en) | 2018-05-01 |
Family
ID=62438073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721086861.1U Active CN207296954U (en) | 2017-08-23 | 2017-08-23 | Tubing string Anti-breaking wellhead Junk prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207296954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661569A (en) * | 2018-07-06 | 2018-10-16 | 陕西双威石油机械有限公司 | A kind of environment protection multifunctional oil extraction process tubular column |
| CN111734328A (en) * | 2020-07-08 | 2020-10-02 | 重庆望江鑫祺机械有限公司 | Shearing type releaser |
-
2017
- 2017-08-23 CN CN201721086861.1U patent/CN207296954U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108661569A (en) * | 2018-07-06 | 2018-10-16 | 陕西双威石油机械有限公司 | A kind of environment protection multifunctional oil extraction process tubular column |
| CN111734328A (en) * | 2020-07-08 | 2020-10-02 | 重庆望江鑫祺机械有限公司 | Shearing type releaser |
| CN111734328B (en) * | 2020-07-08 | 2021-08-24 | 重庆望江鑫祺机械有限公司 | Shearing type releaser |
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