CN206360677U - A kind of downhole blow-out preventer - Google Patents
A kind of downhole blow-out preventer Download PDFInfo
- Publication number
- CN206360677U CN206360677U CN201720008143.6U CN201720008143U CN206360677U CN 206360677 U CN206360677 U CN 206360677U CN 201720008143 U CN201720008143 U CN 201720008143U CN 206360677 U CN206360677 U CN 206360677U
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- China
- Prior art keywords
- well
- central tube
- utility
- model
- oil
- 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 is related to petroleum works field, specifically, a kind of downhole blow-out preventer during being used in Oil/gas Well well workover.A kind of downhole blow-out preventer, including：Top connection, central tube, baffle ring, packing element, compression cone, shear pin, retainer ring, check-valves, lower contact.The utility model is connected on well workover pipe string when in use, when there is well kick in Oil/gas Well underground, is insulated tubing string internal channel by check-valves, down-hole annular is insulated by compressing packing element, so as to realize the blowout prevention of well workover process.This utility model is simple in construction, can when there is well kick in Oil/gas Well the very first time closure down-hole string inside and outside annular space, to well upper flashboard preventer closing well reserve abundance time.
Description
Technical field
The utility model is related to petroleum works field, specifically, a kind of underground during being used in Oil/gas Well well workover is anti-
Spray apparatus.
Background technology
It is general in present Oil/gas Well well workover all to use traditional ram preventer, traditional ram preventer be all by
Well head observes overflow alarm, if it find that a large amount of overflows, the ram preventer for controlling well head by artificial opening control system enters
Row closing well.But it is due to the rapidity that blowout occurs, usually well head ram preventer is also not turned off, and well inner high voltage liquid has been leapt up
Go out well head formation blowout.Moreover, down-hole high pressure liquid is when reaching well head, speed is very fast, mistake of the ram preventer in closing
Cheng Zhong, it seals original paper it occur frequently that thorn is bad, causes closing well to fail.
Utility model content
The utility model aims to solve the problem that the problem of being mentioned in background technology, and the utility model proposes a kind of Underwell anti-injection
Device, can replace the like product belonging to patent at this stage, and the technical scheme that it is used is as follows：
A kind of downhole blow-out preventer, including：Top connection, central tube, baffle ring, packing element, compression cone, shear pin, retainer ring, non-return
Valve, lower contact.Top connection and lower contact are separately fixed at the upper and lower ends of central tube by screw thread, and baffle ring passes through screw thread and center
Cylinder connection, compression cone is connected with central tube by shear pin, and packing element is enclosed on central tube, between baffle ring and compression cone,
Retainer ring is located between compression cone and lower contact, is threadedly secured on central tube, and check-valves is located in central tube, with
Heart cylinder is connected through a screw thread.
The utility model has the following advantages that：It is simple in construction, can the quick closedown when violent well kick occurs for Oil/gas Well underground
Annular space inside and outside well workover pipe string, the time of abundance is reserved to well upper flashboard preventer closing well.
Brief description of the drawings
Fig. 1 the utility model patent entirety installation diagram
In figure：1. top connection, 2. central tubes, 3. baffle rings, 4. packing elements, 5. compression cones, 6. shear pins, 7. retainer rings, 8. stop
Return valve, 9. lower contacts.
Embodiment
The utility model is described in further detail with example below in conjunction with the accompanying drawings：
As shown in figure 1, a kind of downhole blow-out preventer, including：Top connection 1, central tube 2, baffle ring 3, packing element 4, compression cone 5,
Shear pin 6, retainer ring 7, check-valves 8, lower contact 9.Top connection 1 and lower contact 9 are separately fixed at central tube about 2 by screw thread
Two ends, baffle ring 3 is connected by screw thread with central tube 2, and compression cone 5 is connected with central tube 2 by shear pin 6, and packing element 4 is enclosed on center
On cylinder 2, between baffle ring 3 and compression cone 5, retainer ring 7 is located between compression cone 5 and lower contact 9, is threadably secured
On central tube 2, check-valves 8 is located in central tube 2, is connected through a screw thread with central tube 2.
A kind of above-mentioned downhole blow-out preventer operation principle is as follows：
The utility model is connected on well workover pipe string by top connection 1 and lower contact 9 when in use, when Oil/gas Well shaft bottom goes out
Now during violent well kick, well workover pipe string inner high voltage liquid is stopped by check-valves 8 can not be up, and annular space highly pressurised liquid acts on compression cone
On the shoulder of body 5, when pressure, which exceedes shear pin 6, cuts pressure, shear pin 6 is cut, the up extruding packing element 4 of compression cone 5, on packing element 4
There is fixed baffle ring 3 in portion, so packing element 4 is compressed, is radially expanded, and down-hole annular is insulated, so as to realize Underwell anti-injection.
Claims (1)
1. a kind of downhole blow-out preventer, it is characterised in that including：Top connection (1), central tube (2), baffle ring (3), packing element (4), compression
Cone (5), shear pin (6), retainer ring (7), check-valves (8), lower contact (9), top connection (1) and lower contact (9) pass through screw thread point
The upper and lower ends of central tube (2) are not fixed on, baffle ring (3) is connected by screw thread with central tube (2), compression cone (5) and center
Cylinder (2) is connected by shear pin (6), and packing element (4) is enclosed on central tube (2), between baffle ring (3) and compression cone (5), fixed
Ring (7) is located between compression cone (5) and lower contact (9), is threadedly secured on central tube (2), during check-valves (8) is located at
In heart cylinder (2), it is connected through a screw thread with central tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008143.6U CN206360677U (en) | 2017-01-05 | 2017-01-05 | A kind of downhole blow-out preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720008143.6U CN206360677U (en) | 2017-01-05 | 2017-01-05 | A kind of downhole blow-out preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206360677U true CN206360677U (en) | 2017-07-28 |
Family
ID=59378861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720008143.6U Expired - Fee Related CN206360677U (en) | 2017-01-05 | 2017-01-05 | A kind of downhole blow-out preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206360677U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999589A (en) * | 2018-07-26 | 2018-12-14 | 中国石油大学(华东) | A kind of workover treatment downhole blow-out preventer |
| CN109798085A (en) * | 2019-03-18 | 2019-05-24 | 西南石油大学 | A kind of normally closed type unidirectionally injects downhole blow-out preventer |
-
2017
- 2017-01-05 CN CN201720008143.6U patent/CN206360677U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999589A (en) * | 2018-07-26 | 2018-12-14 | 中国石油大学(华东) | A kind of workover treatment downhole blow-out preventer |
| CN109798085A (en) * | 2019-03-18 | 2019-05-24 | 西南石油大学 | A kind of normally closed type unidirectionally injects downhole blow-out preventer |
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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: 20170728 Termination date: 20180105 |