CN104895528B - Tube safety valve - Google Patents
Tube safety valve Download PDFInfo
- Publication number
- CN104895528B CN104895528B CN201510348869.XA CN201510348869A CN104895528B CN 104895528 B CN104895528 B CN 104895528B CN 201510348869 A CN201510348869 A CN 201510348869A CN 104895528 B CN104895528 B CN 104895528B
- Authority
- CN
- China
- Prior art keywords
- flap
- adapter
- pressure release
- spring
- liquid pipe
- 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.)
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Links
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 12
- 238000002347 injection Methods 0.000 claims abstract description 9
- 239000007924 injection Substances 0.000 claims abstract description 9
- 238000003780 insertion Methods 0.000 claims abstract description 8
- 230000037431 insertion Effects 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000013043 chemical agent Substances 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Abstract
The tube safety valve of annular circulation passage can be set up the present invention relates to a kind of, spring strut, flow duct are connected to hydraulic cavities, dynamic sealing assembly at two is coordinated to constitute piston chamber between the inwall of spring strut and the outer wall of flow duct, power spring is placed with piston chamber, spring strut is connected to outer barrel by adapter, adapter in the connection of outer barrel lower end, flap assembly and action assembly are mounted with space between adapter, middle adapter and outer barrel successively, middle adapter lower end connected and is provided with liquid injection hole in liquid pipe, excessively liquid pipe, crossed liquid pipe lower end connection insertion seal receptacle.The technical scheme that the present invention is provided is on the basis of the functions such as existing safe valve breakdown underground overflow, blowout are retained, add the function of setting up annulus access circulation, make to rise during the operations such as water filling, polymer injection, chemical agent and change tubing string, reduce duty cycle, it is cost-effective.
Description
Technical field
The present invention relates to the SCSSV used in a kind of Oil/gas Well, annular space can be specifically set up
The tube safety valve of circulation canal.
Background technology
Storm valve be used for Oil/gas Well in, prevent downhole fluid it is out of control caused by overflow, blowout situations such as underground
Instrument.The operation principle of surface controlled subsurface safety valve is：Beaten by ground hydraulic-control pipeline under hydraulic pressure, hydraulic drive piston etc.
OK, the descending compression spring of flow duct is driven, valve opening valve is pushed up, safety valve is opened, it is necessary to when closing, liquid controling pipe line sheds hydraulic pressure, stream
Dynamic pipe is up in the presence of spring thrust to be departed from flap, and flap is closed in the presence of torsion spring, blocks fluid passage.
Existing surface controlled subsurface safety valve does not possess the ability for setting up annulus access circulation, is noted to oil well
It must be risen when water, polymer injection, chemical agent operation and change tubing string, duty cycle is long, cost is high.
The content of the invention
The present invention for solve existing storm valve the problem of, it is desirable to provide a kind of dependable performance, can not meet and change
Tubing string can be carried out the ground control tube safety valve that water filling note chemical agent needs.
In order to achieve the above object, the technical solution adopted by the present invention is：Spring strut, flow duct are connected to hydraulic cavities, bullet
Coordinate at two dynamic sealing assembly to constitute in piston chamber, piston chamber between the inwall of spring cylinder and the outer wall of flow duct and place dynamic
Spring, spring strut is connected to outer barrel by adapter, adapter in the connection of outer barrel lower end, adapter, middle adapter and outer barrel it
Between space in be mounted with successively flap assembly and action assembly, middle adapter lower end connected liquid pipe, cross liquid pipe on be provided with note
Fluid apertures, crosses liquid pipe lower end connection insertion seal receptacle.Installed successively in space between middle adapter, excessively liquid pipe and insertion seal receptacle
There is unlatching assembly；Lower contact is connected on sleeve base.
Wherein, the flap pin in the flap assembly allows flap with flap through the perforate on flap and valve petal shelf
Sell and rotated for axle, flap torsion spring is also through on flap pin, and the two-arm of torsion spring is buckled on flap and valve petal shelf respectively.
Wherein, two rectangular channels are arranged with the middle part of the sliding sleeve, closing piece is arranged in rectangular channel.
Wherein, there is keyway on the outer tube inner wall, raised key coordinates during installation and on sleeve base, transmit moment of torsion；Key it
Between recessed part it is recessed with sleeve base same position it is part composition rectangle, accommodate the passage that the two-arm of ACTUATOR is passed through.
Wherein, the afterbody of ACTUATOR is provided with screwed hole, and action pawl front end is also provided with corresponding screwed hole, and is connected by pin
Meeting both makes it link.
Wherein, it is provided with the mounting hole on pressure release seat on balance cock cap peace weighing apparatus stopper rod, balance stopper rod and is cased with pressure release bullet
Spring.
Wherein, the uniform semicircle orifice at wound hole center is provided with the mounting hole of pressure release seat.
Wherein, pressure release seat Cross section Design into distance is small up and down, two ends apart from big shape, to ensure the excessively stream of annulus access
Area.
Wherein, being let out with the two-arm cooperation with acting pawl to limit for Parallel Symmetric is respectively equipped with pressure release seat top and bottom
The step for coordinating pressure release seat is respectively equipped with the spacing plane that wedge is rotated, action pawl two-arm.
Compared to the prior art, the technical scheme that the present invention is provided is retaining existing safe valve breakdown underground overflow, blowout
On the basis of function, the function of setting up annulus access circulation is added, when making the operations such as water filling, polymer injection, chemical agent
It need not rise and change tubing string, reduce duty cycle, it is cost-effective.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of sliding sleeve.
Fig. 3 is the structural representation of outer barrel.
Fig. 4 is the structural representation of pressure release seat.
In figure：1 is hydraulic cavities, and 2 be spring strut, and 3 be dynamic sealing assembly, and 4 be flow duct, and 5 be power spring, and 6 be sealing
Seat, 7 be adapter, and 8 be outer barrel, and 9 be valve seat, and 10 be valve petal shelf, and 11 be flap torsion spring, and 12 be flap pin, and 13 be flap, and 14 are
Balanced plug, 15 be sleeve base, and 16 be closing piece, and 17 be sliding sleeve, and 18 be ACTUATOR, and 19 be back-moving spring, and 20 be middle adapter, and 21 are
Liquid pipe is crossed, 22 be liquid injection hole, and 23 be pin, and 24 be action pawl, and 25 be pressure release sealing, and 26 be pressure release seat, and 27 be balance cock cap, 28
It is pressure release spring for balance stopper rod, 29,30 be insertion seal receptacle, and 31 be lower contact.
Embodiment
The present invention is further described in conjunction with accompanying drawing.
Referring to Fig. 1 to Fig. 4, Fig. 1 to Fig. 4 shows one embodiment of the present of invention, including hydraulic cavities 1, spring strut 2,
Dynamic sealing assembly 3, flow duct 4, power spring 5, seal receptacle 6, adapter 7, outer barrel 8, valve seat 9, valve petal shelf 10, flap torsion spring
11st, flap pin 12, flap 13, balanced plug 14, sleeve base 15, closing piece 16, sliding sleeve 17, ACTUATOR 18, back-moving spring 19, middle switching
First 20, liquid pipe 21, liquid injection hole 22, pin 23, action pawl 24, pressure release sealing 25, pressure release seat 26, balance cock cap 27, balanced plug are crossed
Bar 28, pressure release spring 29, insertion seal receptacle 30, lower contact 31 etc., wherein：
Spring strut 2, flow duct 4 are connected to 1 hydraulic cavities 1, coordinate two between the inwall of spring strut 2 and the outer wall of flow duct 4
Place's dynamic sealing assembly 3, which is constituted, is placed with 5 power springs in piston chamber, piston chamber, 2 spring struts are connected to outer by 7 adapters
Cylinder 8, the lower end of outer barrel 8 connection flap assembly and action assembly, the middle lower end of adapter 20 connected liquid pipe 21, cross liquid pipe 21 on be provided with
Liquid injection hole 22, crosses the lower end of liquid pipe 21 connection insertion seal receptacle 30.Between middle adapter 20, excessively liquid pipe 21 and insertion seal receptacle 30
Unlatching assembly is installed in space.Lower contact 31 is connected on sleeve base 15.
Wherein, flap assembly is made up of valve seat 9, valve petal shelf 10, flap pin 12, flap 13, flap torsion spring 11 successively；
Wherein, action assembly is made up of sleeve base 15, closing piece 16, ACTUATOR 18, back-moving spring 19 etc. successively；
Wherein, unlatching assembly seals 25, pressure release seat 26, balance stopper rod 28 by pin 23, action pawl 24 and pressure release successively, put down
Weigh cock cap 27, the unlatching assembly of the composition of pressure release spring 29.
When needing to open the safety-valve in use, pressed oil by injecting high pressure liquid into the hydraulic channel A in hydraulic cavities 1,
Hydraulic oil enters the piston chamber that dynamic sealing assembly 3 is constituted at two between the inwall of spring strut 2 and the outer wall of flow duct 4
It is interior.Because the anterior hydraulic action area of flow duct 4 is slightly larger than the hydraulic action area at its rear portion, so hydraulic pressure generation is downward
Power be more than upward power, promote that flow duct 4 is descending and compression power spring 5, continue traveling downwardly top and open after balanced plug 14, balanced valve
Valve pushes up valve opening valve 13 after pressure difference about 13, open safety valve.Now continue to increase hydraulic pressure, flow duct, which is continued traveling downwardly, touches sliding sleeve
17 and promote sliding sleeve descending, the closing piece 16 installed in the middle part rectangular channel of sliding sleeve 17 is also descending in the lump, the pushing action of closing piece 16 cylinder 18
It is descending, ACTUATOR 18 and action pawl 24 link it is descending together, it is descending during, action pawl 24 lower end touches balanced plug 27 first
Cap simultaneously promotes its descending, compression pressure release spring 29, and balance stopper rod 28 is driven on top, pressure release 26 lower end pressurized fluids of seat by mounting hole and
Uniform semicircle orifice enters 26 upper ends of pressure release seat, balance pressure release 26 two-way pressures of seat.Action pawl 24 is continued traveling downwardly, on its pawl arm
Step B withstand 26 front ends of pressure release seat, promote pressure release seat 26 descending so that the sealing surface between pressure release seat 26 and pressure release sealing 25
C is opened, the annular circulation passage D set up between internal diameter and the external diameter of sleeve base 15 that pressure release seat 26 is flowed through from liquid injection hole 22.
Embodiments of the present invention are described above in conjunction with drawings and Examples, and the structure that embodiment is provided is not constituted pair
The limitation of the present invention, those skilled in the art in the art can be according to needing to adjust, within the scope of the appended claims
Various deformations or amendments are made in protection domain.
Claims (2)
1. a kind of tube safety valve, it is characterised in that：
Spring strut, flow duct are connected to hydraulic cavities, and dynamic sealing group at two is coordinated between the inwall of spring strut and the outer wall of flow duct
Part constitutes and power spring is placed with piston chamber, piston chamber, and spring strut is connected to outer barrel, the connection of outer barrel lower end by adapter
It is mounted with middle adapter, the space between adapter, middle adapter and outer barrel under flap assembly and action assembly, middle adapter
End connected liquid pipe, crosses in liquid pipe and is provided with liquid injection hole, crossed liquid pipe lower end connection insertion seal receptacle；Middle adapter, cross liquid pipe and insert
Enter and unlatching assembly is installed in the space between seal receptacle；Lower contact is connected on sleeve base；
Two rectangular channels are arranged with the middle part of the sliding sleeve, closing piece is arranged in rectangular channel；
There is keyway on the outer tube inner wall, raised key coordinates during installation and on sleeve base, transmit moment of torsion；Recessed portion between key
The passage for dividing part composition rectangle, receiving ACTUATOR the two-arm recessed with sleeve base same position to pass through；
The afterbody of ACTUATOR is provided with screwed hole, and action pawl front end is also provided with corresponding screwed hole, and both make by pin connection
It links；
It is provided with mounting hole on pressure release seat on balance cock cap peace weighing apparatus stopper rod, balance stopper rod and is cased with pressure release spring；
The uniform semicircle orifice at wound hole center is provided with the mounting hole of pressure release seat；
Pressure release seat Cross section Design is into distance is small up and down, two ends apart from big shape, to ensure the area of passage of annulus access；
Being rotated with the two-arm cooperation with acting pawl to limit pressure release seat for Parallel Symmetric is respectively equipped with pressure release seat top and bottom
Spacing plane, action pawl two-arm on be respectively equipped with coordinate pressure release seat step.
2. a kind of tube safety valve according to claim 1, it is characterised in that：Flap pin in the flap assembly is passed through
Perforate on flap and valve petal shelf, allows flap to be rotated by axle of flap pin, flap torsion spring is also through on flap pin, torsion spring
Two-arm is buckled on flap and valve petal shelf respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510348869.XA CN104895528B (en) | 2015-06-19 | 2015-06-19 | Tube safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510348869.XA CN104895528B (en) | 2015-06-19 | 2015-06-19 | Tube safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895528A CN104895528A (en) | 2015-09-09 |
| CN104895528B true CN104895528B (en) | 2017-07-25 |
Family
ID=54028444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510348869.XA Active CN104895528B (en) | 2015-06-19 | 2015-06-19 | Tube safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895528B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476781A (en) * | 2016-06-07 | 2017-12-15 | 中国石油大学(华东) | All-hydraulic control storm valve |
| CN108086947B (en) * | 2017-11-27 | 2020-04-17 | 中国海洋石油集团有限公司 | Downhole safety tool for concentric tubing strings |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5095994A (en) * | 1990-11-08 | 1992-03-17 | Otis Engineering Corportion | Flow actuated safety valve with retrievable choke and metal seals |
| CN101839117A (en) * | 2010-04-21 | 2010-09-22 | 中国石油化工股份有限公司 | Annulus safety valve |
| US7866401B2 (en) * | 2005-01-24 | 2011-01-11 | Schlumberger Technology Corporation | Safety valve for use in an injection well |
| CN203716929U (en) * | 2014-01-11 | 2014-07-16 | 中国石油化工股份有限公司 | Deep well safety valve |
| CN204402451U (en) * | 2014-12-19 | 2015-06-17 | 中国海洋石油总公司 | A kind of hydraulic control single flow device for the protection of underground double-pipe annular space |
| CN204716200U (en) * | 2015-06-19 | 2015-10-21 | 上海优强石油科技有限公司 | Tube safety valve |
-
2015
- 2015-06-19 CN CN201510348869.XA patent/CN104895528B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5095994A (en) * | 1990-11-08 | 1992-03-17 | Otis Engineering Corportion | Flow actuated safety valve with retrievable choke and metal seals |
| US7866401B2 (en) * | 2005-01-24 | 2011-01-11 | Schlumberger Technology Corporation | Safety valve for use in an injection well |
| CN101839117A (en) * | 2010-04-21 | 2010-09-22 | 中国石油化工股份有限公司 | Annulus safety valve |
| CN203716929U (en) * | 2014-01-11 | 2014-07-16 | 中国石油化工股份有限公司 | Deep well safety valve |
| CN204402451U (en) * | 2014-12-19 | 2015-06-17 | 中国海洋石油总公司 | A kind of hydraulic control single flow device for the protection of underground double-pipe annular space |
| CN204716200U (en) * | 2015-06-19 | 2015-10-21 | 上海优强石油科技有限公司 | Tube safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104895528A (en) | 2015-09-09 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Double tube safety valve Granted publication date: 20170725 Pledgee: Industrial Bank Co.,Ltd. Shanghai Nanhui Branch Pledgor: SHANGHAI EXTRONG OILFIELD TECHNOLOGY Co.,Ltd. Registration number: Y2024310000017 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |