CN110107256A - Hydraulic control level pressure backwash valve - Google Patents
Hydraulic control level pressure backwash valve Download PDFInfo
- Publication number
- CN110107256A CN110107256A CN201910508441.5A CN201910508441A CN110107256A CN 110107256 A CN110107256 A CN 110107256A CN 201910508441 A CN201910508441 A CN 201910508441A CN 110107256 A CN110107256 A CN 110107256A
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- seal pipe
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- port
- outer cylinder
- hydraulic control
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- 238000007789 sealing Methods 0.000 claims description 44
- 230000009471 action Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 3
- 239000003129 oil well Substances 0.000 abstract description 9
- 238000005065 mining Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000002146 bilateral effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/063—Valve or closure with destructible element, e.g. frangible disc
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/10—Valve arrangements for boreholes or wells in wells operated by control fluid supplied from outside the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Safety Valves (AREA)
Abstract
The present invention provides a kind of hydraulic control level pressure backwash valves, are related to field mining equipment technical field, are tightly connected including outer cylinder and positioned at the seal pipe of outer barrel, outer cylinder and seal pipe, and there are annulus spaces between outer cylinder and seal pipe；The first fluid-through port being connected to annulus space is offered on outer cylinder, is provided with the rupture disk that can be crushed in the first fluid-through port；The second fluid-through port being connected to annulus space is offered in seal pipe, it is provided with the first closeouts of channel between the first fluid-through port that can block the second fluid-through port between outer cylinder and seal pipe, the first return unit that the first closeouts of driving reset is provided between the first closeouts and lower contact；It is provided with the second closeouts that can seal the second fluid-through port in seal pipe, the second return unit for driving the second closeouts to reset is provided in seal pipe.The technical effect that oil well can work normally is reached.
Description
Technical field
The present invention relates to field mining equipment technical fields, in particular to hydraulic control level pressure backwash valve.
Background technique
Being constantly progressive and develop with oil field development technology is protection sleeve pipe when producing and filling the water, make oil jacket annulus with
It is isolated between oil pipe, especially water injection well and gas well.The leakproofness that must assure that oil pipe when exploitation and water filling, otherwise will greatly damage
The corrosion and well control risk of evil oil/gas well and water injection well to casing.Backwash valve used at present mostly uses sleeve type, duplex structure
Deng the backwash valve of above several forms all has the case where casing is with the presence of pressure in application process, with oil gas well development
Technology constantly update, require it is continuous improve, when above product has not been able to satisfy production now and water filling more and more
Demand.
Whether sleeve type backwash valve or bilateral body structure backwash valve, all cannot reliably exist from mechanical structure
Underground sealing, when recycling kill-job, pressure value is unstable.Whether sleeve type backwash valve or bilateral body structure backwash valve are in life
It produces and after water filling a period of time, oil jacket annulus is shown in pressure, seal failure.If continuing to production at this time and water injection work having well control wind
Danger has to stop production or stop filling the water to carry out workover treatment to check tubing string thus, replaces backwash valve.
Therefore it provides a kind of hydraulic control level pressure backwash valve that oil field can be enable normally to exploit becomes those skilled in the art
Important technological problems to be solved.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic control level pressure backwash valves, to alleviate in the prior art because of hydraulic control level pressure backwash
The technical issues of valve leakproofness difference causes oil field not exploit normally.
The embodiment of the invention provides a kind of hydraulic control level pressure backwash valves, including outer cylinder and positioned at the sealing of the outer barrel
Pipe, the outer cylinder and the seal pipe are tightly connected, and there are annulus spaces between the outer cylinder and the seal pipe；
One end of both the outer cylinder and the seal pipe is tightly connected with the top connection, the other end with it is described under
Joint sealing connection；
The first fluid-through port for the annulus space to be in communication with the outside, the first logical liquid are offered on the outer cylinder
The rupture disk that can be crushed is provided on mouth；
The second fluid-through port for the seal pipe to be connected to the annulus space is offered in the seal pipe, it is described
The channel between first fluid-through port that can block second fluid-through port is provided between outer cylinder and the seal pipe
One closeouts are provided with first for driving first closeouts to reset and reset between the outer cylinder and the seal pipe
Part；
The second closeouts that can seal the second fluid-through port are provided in the seal pipe, setting is useful in the seal pipe
In the second return unit for driving second closeouts to reset.
The first possible embodiment provided in an embodiment of the present invention, wherein above-mentioned seal pipe include from top to bottom according to
The first seal pipe, jointing and the second seal pipe of secondary connection；
The tube top portion of first seal pipe and the top connection are tightly connected, the bottom of second seal pipe with it is described
Lower contact is tightly connected.
Second of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned second closeouts are living using second
Plug, the second piston includes piston cylinder and the sealing bulge loop for being fixedly installed on the piston drum outer wall；
The second sealing bottom of the tube is fixedly installed locking cap, and one end and the locking cap of second return unit support
It connects, the other end is abutted with the bottom of the sealing bulge loop；
The sealing bulge loop and the inner wall of second seal pipe are slidingly sealed.
The third possible embodiment provided in an embodiment of the present invention, wherein above-mentioned sealing bulge loop along its axial two
End is provided with the sealing ring with the second sealing seal of tube；
The driving bulge loop is fixed at the sealing bulge loop outer wall, and the driving bulge loop is located at the described second logical liquid
Below mouthful.
4th kind of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned piston cylinder and the sealing bulge loop
It is an integral structure.
5th kind of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned outer cylinder includes from top to bottom successively
The sliding sleeve and spring strut of connection；
The sliding sleeve and the spring strut are tightly connected.
6th kind of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned first closeouts are living using first
Plug；One end of first return unit is abutted with the bottom end of the first piston, and the other end is abutted with the top of the lower contact；
The first piston abuts under the action of first return unit with the bottom of the sliding sleeve.
7th kind of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned first fluid-through port is stepped hole；
The pressure cap for locking the rupture disk is fixedly installed in first fluid-through port；
Seal washer, the rupture disk and the pressure are provided between the rupture disk and the step of first fluid-through port
Seal washer is provided between cap；
The pressure cap is threadedly coupled with first fluid-through port.
8th kind of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned first return unit and described second
Return unit is all made of spring.
9th kind of possible embodiment provided in an embodiment of the present invention, wherein above-mentioned hydraulic control level pressure backwash valve further includes
Top connection and lower contact；
One end of both the outer cylinder and the seal pipe is tightly connected with the top connection, the other end with it is described under
Joint sealing connection.
The utility model has the advantages that
The embodiment of the invention provides a kind of hydraulic control level pressure backwash valve, including outer cylinder and positioned at the seal pipe of outer barrel,
Outer cylinder and seal pipe are tightly connected, and there are annulus spaces between outer cylinder and seal pipe；It offers on outer cylinder and connects with annulus space
The first logical fluid-through port is provided with the rupture disk that can be crushed in the first fluid-through port；It offers in seal pipe and connects with annulus space
The second logical fluid-through port, channel between the second fluid-through port and the first fluid-through port can be blocked by being provided between outer cylinder and seal pipe
First closeouts are provided with the first return unit that the first closeouts of driving reset between the first closeouts and lower contact；Seal pipe
The second closeouts that can seal the second fluid-through port are inside provided with, are provided in seal pipe for driving the second closeouts to reset
Second return unit.
When being not necessarily to carry out backwash, staff does not pressurize to rupture disk, rupture disk will not be made to occur broken；And
The second fluid-through port is closed by the second closeouts, first of sealing when production and water filling is formed, avoids the oil liquid in seal pipe
Pass through the second fluid-through port；Block the channel between the first fluid-through port and the second fluid-through port by the first closeouts, formed production and
The second of water filling seals, and the oil liquid in seal pipe is avoided to flow to the first fluid-through port from the second fluid-through port；Finally by rupture disk
It closes the first fluid-through port, forms three seals when production and water filling, avoid oil liquid in seal pipe from the first fluid-through port stream
Out；To avoiding hydraulic control level pressure backwash valve from leaking, not will cause the case where oil jacket annulus is shown in pressure generation, avoid oil well because of
Hydraulic control level pressure backwash valve and stop working normally.
When carrying out backwash, staff suppresses into the annular space between backwash valve and oil well casing, passes through backwash
The pressure of liquid smashes the rupture disk at the first fluid-through port, and then backwash liquid enters in outer cylinder, be then filled with outer cylinder with
Annulus space between seal pipe；Then staff continues to suppress, and enables backwash liquor body that the first closeouts to be pushed to overcome
The elastic force of one return unit moves down, so that backwash liquor body be enable to enter in the second fluid-through port；Then staff continues
It suppresses, and fluid pressure changes over time and changes (for example, pulse pressure), backwash liquor body is enabled to drive the second closeouts
Movement, to keep the second fluid-through port unimpeded, backwash liquor body can be entered inside seal pipe, complete backwash work.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the overall structure cross-sectional view of hydraulic control level pressure backwash valve provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of second piston superstructure in hydraulic control level pressure backwash valve provided in an embodiment of the present invention；
Fig. 3 is the enlarged diagram in Fig. 1 at A；
Fig. 4 is the enlarged diagram in Fig. 1 at B；
Fig. 5 is the cross-sectional view of hydraulic control level pressure backwash valve superstructure provided in an embodiment of the present invention；
Fig. 6 is the cross-sectional view of hydraulic control level pressure backwash valve central structure provided in an embodiment of the present invention；
Fig. 7 is the cross-sectional view of hydraulic control level pressure backwash valve substructure provided in an embodiment of the present invention.
Icon: 100- top connection；200- lower contact；
300- outer cylinder；310- sliding sleeve；The first fluid-through port of 311-；312- rupture disk；313- pressure cap；314- sealing
Washer；320- spring strut；330- annulus space；
400- seal pipe；The first seal pipe of 410-；420- jointing；The second seal pipe of 430-；431- second is logical
Liquid mouth；432- locking cap；
500- first piston；The first return unit of 510-；
600- second piston；The second return unit of 610-；620- piston cylinder；630- seals bulge loop；640- driving is convex
Ring.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
The present invention is described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.
Refer to figures 1-7, the embodiment of the invention provides a kind of hydraulic control level pressure backwash valves, including outer cylinder 300 and position
Seal pipe 400 inside outer cylinder 300, outer cylinder 300 and seal pipe 400 are tightly connected, and between outer cylinder 300 and seal pipe 400
There are annulus spaces 330；The first fluid-through port 311 for annulus space 330 to be in communication with the outside is offered on outer cylinder 300, the
The rupture disk 312 that can be crushed is provided on one fluid-through port 311；It is offered in seal pipe 400 for by seal pipe 400 and annular space
The second fluid-through port 431 that space 330 is connected to, the second fluid-through port 431 can be blocked by being provided between outer cylinder 300 and seal pipe 400
The first piston 500 in channel between the first fluid-through port 311 is provided with for driving first between outer cylinder 300 and seal pipe 400
The first return unit 510 that piston 500 resets；The second piston that can seal the second fluid-through port 431 is provided in seal pipe 400
600, the second return unit 610 for driving second piston 600 to reset is provided in seal pipe 400.
It is carrying out in use, hydraulic control level pressure backwash valve provided in this embodiment is lowered into oil well casing.
Without carry out backwash when, staff not to rupture disk 312 carry out pressurization bring it about it is broken；It is living by second
600 the second fluid-through port 431 of closing of plug, forms first of sealing when production and water filling, the oil liquid in seal pipe 400 is avoided to pass through
Second fluid-through port 431；The channel between the first fluid-through port 311 and the second fluid-through port 431 is blocked by first piston 500, is formed
The second sealing of production and water filling sum, avoids the oil liquid in seal pipe 400 from flowing to the first fluid-through port from the second fluid-through port 431
311；The first fluid-through port 311 is closed finally by rupture disk 312, three seals when production and water filling is formed, avoids sealing
Oil liquid in pipe 400 is flowed out from the first fluid-through port 311；To avoid hydraulic control level pressure backwash valve from leaking, oil jacket not will cause
Annular space is shown in the generation of the case where pressure, and oil well is avoided to stop working normally because of hydraulic control level pressure backwash valve.
Without being sealed by three-layer sealed to seal pipe 400 when carrying out backwash, seal pipe 400 is avoided to let out
Leakage.
Referring to Fig. 1, when carrying out backwash, staff carries out into the annular space between oil pipe (backwash valve) and oil well casing
It suppresses, is smashed the rupture disk 312 at the first fluid-through port 311 by the pressure of backwash liquid, then backwash liquid enters outer
In 300 (sliding sleeves 310) of cylinder, it is then filled with outer cylinder 300 (sliding sleeve 310 and spring strut 320) and (the first sealing of seal pipe 400
Pipe 410, jointing 420 and the second seal pipe 430) between annulus space 330；Then staff continues to suppress, and makes anti-
The elastic force that wash liq can push first piston 500 to overcome the first return unit 510 moves down, thus enable backwash liquor body into
Enter into the second fluid-through port 431；Then staff continues to suppress, and fluid pressure changes over time and changes (for example, arteries and veins
Punching press), enable backwash liquor body that second piston 600 is driven to move, thus keep the second fluid-through port 431 unimpeded, backwash liquor physical efficiency
It enough enters inside seal pipe 400.
It should be noted that backwash valve provided in this embodiment is the tripping in together with the tops completion tools such as electric submersible pump respectively
In oil well, or in injection well downhole flow regulator tubing string together tripping in oil well.
For example, it is fashionable under working as together with the tops completion tool such as backwash valve and electric submersible pump, then backwash valve is connect in flow string
The top, carry out recycling kill-job and tripping in tool as down-hole pressure can carry out reacting cycle high density liquid extremely in production
Close production sliding sleeve operation, it is ensured that production safety reduces well control risk.When backwash valve is anti-as the hydraulic control level pressure in water injection string
When washing valve, then this is connected into backwash valve and connect in water injection string upper end, tubing string water injection pressure is higher in water filling, close by setting three
Oil pipe and oil jacket annulus is isolated in envelope, it is ensured that the reliability of sealing.When water filling, it is high can to carry out circulation extremely for bottom pressure
Density fluid kill-job opens three laminar flow circulation passages and carries out circulation kill-job.Circulation canal is closed after kill-job, can proceed with note
Water job execution.During water injection work can tripping in allotment tool allotment operation carried out to downhole water flow regulator, realize fining
Water injection work.
It should be noted that the first return unit 510 and the second return unit 610 can use spring, the first return unit 510
Between first piston 500 and lower contact 200, the second return unit 610 is between locking cap 432 and second piston 600.
It should be pointed out that one end of both outer cylinder 300 and seal pipe 400 is tightly connected with top connection 100, the other end
It is tightly connected with lower contact 200.
In the optinal plan of the present embodiment, seal pipe 400 includes sequentially connected first seal pipe 410, jointing 420
With the second seal pipe 430；The tube top portion of interior sealing and top connection 100 are tightly connected, the bottom of the second seal pipe 430 and lower contact
200 are tightly connected.
In the optinal plan of the present embodiment, the bottom of the first seal pipe 410 and jointing 420 are tightly connected, and second is close
The top of tube sealing 430 and jointing 420 are tightly connected.
Specifically, the top exterior walls of the first seal pipe 410 and 100 bottom interior wall of top connection are tightly connected, the first seal pipe
410 bottom outer wall and the top inner wall of jointing 420 are tightly connected；The top inner wall of second seal pipe 430 connects with connection
First 420 bottom outer wall is threadedly coupled, and the bottom outer wall of the second seal pipe 430 and the top inner wall of lower contact 200 are tightly connected.
When installing lower contact 200, lower contact 200 will push the second seal pipe 430, make the second seal pipe 430 and lower contact 200 tightly
It abuts together, and the second seal pipe 430 will push that jointing 420 is mobile, makes the top of jointing 420 and first close
The bottom of tube sealing 410 tightly abuts together, and supports the top of the first seal pipe 410 and the bottom of top connection 100 tightly
It is connected together.
In the optinal plan of the present embodiment, second piston 600 includes piston cylinder 620 and sealing bulge loop 630；Second seal pipe
430 bottoms are fixedly installed locking cap 432, and one end of the second return unit 610 is abutted with locking cap 432, and the other end and sealing are convex
The bottom of ring 630 abuts；Sealing bulge loop 630 and the inner wall of the second seal pipe 430 are slidingly sealed.
Referring to fig. 2, shown in Fig. 4, in the optinal plan of the present embodiment, sealing bulge loop 630 is provided with along its axial both ends
With the sealing ring of the second seal pipe 430 sealing；Second fluid-through port 431 is between two sealing rings；It is provided between two sealing rings
Driving bulge loop 640 for driving sealing bulge loop 630 mobile, and bulge loop 640 is driven to be located at 431 lower section of the second fluid-through port.
Specifically, the liquid entered in outer cylinder 300 from the first fluid-through port 311 can drive first piston when carrying out backwash
500 is mobile, so that liquid can enter in the second fluid-through port 431, then the liquid in the second fluid-through port 431 can flow to second piston
600 and second between seal pipe 430, and then as the variation of fluid pressure, it is living that liquid can pass through the driving second of driving bulge loop 640
Plug 600 is mobile, moves down second piston 600, keeps the second fluid-through port 431 unimpeded, thus make liquid outside outer cylinder 300 into
Enter to inside the second seal pipe 430.
It should be pointed out that the pressure of liquid changes over time, and amplitude of variation is larger, when fluid pressure reaches
When maximum, the second return unit 610 can be oppressed moment, and determine that second piston 600 quickly moves down, to make second piston
600 no longer block the second fluid-through port 431.
It may also be noted that staff suppresses the liquid between pipe sleeve and outer cylinder 300 outside oil well, make
Liquid can pressure break breaking disc, and after liquid enters in outer cylinder 300, the pressure of liquid is back and forth to change in a short time
, when fluid pressure reaches maximum, liquid can push driving bulge loop 640 quickly to move down, to drive second piston
600 quickly move down, so that the second fluid-through port 431 is unimpeded.Also, fluid pressure can quickly push driving convex when reaching maximum
Ring 640 moves, so that second piston 600 can be fully located at 431 lower section of the second fluid-through port.
When carrying out backwash work, it is only necessary to which staff suppresses at well head, can not running string tool
Carry out switch control.And after backwash, the first return unit 510 can drive first piston 500 to reset, the second return unit 610
Second piston 600 can be driven to reset, form two seals protection；Alternatively, staff can propose backwash valve, to breaking disc
It is replaced, to form three seals protection.
In the optinal plan of the present embodiment, piston cylinder 620 and sealing bulge loop 630 are an integral structure.
In the optinal plan of the present embodiment, outer cylinder 300 includes sliding sleeve 310 and spring strut 320；The bottom of sliding sleeve 310
The top inner wall of outer wall and spring strut 320 is tightly connected.
Specifically, the top inner wall of sliding sleeve 310 is threadedly coupled with the bottom outer wall of top connection 100, and between the two
It is provided with sealing ring；The bottom outer wall of sliding sleeve 310 is threadedly coupled with the top interior of spring strut 320, and is set between the two
It is equipped with sealing ring.
The bottom interior wall of sliding sleeve 310 is threadedly coupled with the top exterior walls of lower contact 200, and is provided between the two close
Seal.
When assembling backwash valve, first spring strut 320 and lower contact 200 are linked together, are then charged into the first return unit
510 and first piston 500；Being then charged into the second seal pipe 430, (the second bottom thread before loading of seal pipe 430 is connected and fixed
Cap 432, top are threadedly coupled with jointing 420), it is reloaded into the second return unit 610 and second piston 600；Then spring strut
320 screw tops connect sliding sleeve 310；The first seal pipe 410 is packed at the top of jointing 420；Finally it is packed into top connection
100, top connection 100 is threadedly coupled with spring strut 320；In the screwing operations of top connection 100 and spring strut 320, top connection 100
The first seal pipe 410 can be compressed, so that the second seal pipe 430 be made tightly to abut with lower contact 200.
In the optinal plan of the present embodiment, one end of the first return unit 510 is abutted with the bottom end of first piston 500, another
End is abutted with the top of lower contact 200；First piston 500 supports under the action of the first return unit 510 with the bottom of sliding sleeve 310
It connects.
Shown in Figure 3, in the optinal plan of the present embodiment, the first fluid-through port 311 is stepped hole；First fluid-through port 311
Inside it is fixedly installed the pressure cap 313 for locking plate；Sealing is provided between rupture disk 312 and the step of the first fluid-through port 311
Washer 314 is provided with seal washer 314 between rupture disk 312 and pressure cap 313.
In the optinal plan of the present embodiment, pressure cap 313 is threadedly coupled with the first fluid-through port 311.
When installing rupture disk 312, first seal washer 314 is put into the first fluid-through port 311, is then placed in rupture disk
312, seal washer 314 is placed into, pressure cap 313 is then screwed, rupture disk 312 is compressed, while the first fluid-through port 311 being avoided to let out
Leakage.
It should be pointed out that the internal diameter of minimum diameter and flow string in hydraulic control level pressure backwash valve provided in this embodiment
It is identical, with guarantee production and when water injection work can tripping in tool realize and point adopt and dispense.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of hydraulic control level pressure backwash valve characterized by comprising outer cylinder (300) and be located at the outer cylinder (300) internal close
Tube sealing (400), the outer cylinder (300) and the seal pipe (400) are tightly connected, and the outer cylinder (300) and the seal pipe
(400) there are annulus space (330) between；
The first fluid-through port (311) for the annulus space (330) to be in communication with the outside is offered on the outer cylinder (300),
The rupture disk (312) that can be crushed is provided on first fluid-through port (311)；
Second for the seal pipe (400) to be connected to the annulus space (330) is offered on the seal pipe (400)
Fluid-through port (431), second fluid-through port can be blocked by being provided between the outer cylinder (300) and the seal pipe (400)
(431) between first fluid-through port (311) channel the first closeouts, the outer cylinder (300) and the seal pipe (400)
Between be provided with the first return unit (510) for driving first closeouts to reset；
The second closeouts that can seal the second fluid-through port (431), the seal pipe are provided in the seal pipe (400)
(400) the second return unit (610) for driving second closeouts to reset is provided in.
2. hydraulic control level pressure backwash valve according to claim 1, which is characterized in that the seal pipe (400) include on to
Under sequentially connected first seal pipe (410), jointing (420) and the second seal pipe (430)；
The top and top connection (100) of first seal pipe (410) are tightly connected, the bottom of second seal pipe (430)
It is tightly connected with lower contact (200).
3. hydraulic control level pressure backwash valve according to claim 2, which is characterized in that second closeouts use second piston
(600), the second piston (600) include piston cylinder (620) and be fixedly installed on the piston cylinder (620) outer wall sealing it is convex
Ring (630)；
Second seal pipe (430) bottom is fixedly installed locking cap (432), one end of second return unit (610) with
The locking cap (432) abuts, and the other end is abutted with the bottom of sealing bulge loop (630)；
Sealing bulge loop (630) and the inner wall of second seal pipe (430) are slidingly sealed.
4. hydraulic control level pressure backwash valve according to claim 3, which is characterized in that the sealing bulge loop (630) is along its axial direction
Both ends be provided with the sealing ring for being slidingly sealed with second seal pipe (430)；
Sealing bulge loop (630) outer wall is fixedly installed driving bulge loop (640), and the driving bulge loop (640) is positioned at described
Below second fluid-through port (431).
5. hydraulic control level pressure backwash valve according to claim 3, which is characterized in that the piston cylinder (620) and the sealing
Bulge loop (630) is an integral structure.
6. hydraulic control level pressure backwash valve according to claim 1-5, which is characterized in that the outer cylinder (300) includes
The sliding sleeve (310) and spring strut (320) set gradually from top to bottom；
The sliding sleeve (310) and the spring strut (320) are tightly connected.
7. hydraulic control level pressure backwash valve according to claim 6, which is characterized in that first closeouts use first piston
(500)；
One end of first return unit (510) is abutted with the bottom end of the first piston (500), the other end and lower contact
(200) top abuts；
The first piston (500) is supported under the action of the first return unit (510) with the bottom of the sliding sleeve (310)
It connects.
8. hydraulic control level pressure backwash valve according to claim 1-5, which is characterized in that first fluid-through port
It (311) is stepped hole；
The pressure cap (313) for locking the rupture disk (312) is fixedly installed in first fluid-through port (311)；
It is provided with seal washer (314) between the rupture disk (312) and the step of first fluid-through port (311), it is described broken
It splits and is provided with seal washer (314) between disk (312) and the pressure cap (313)；The pressure cap (313) and first fluid-through port
(311) it is threadedly coupled.
9. hydraulic control level pressure backwash valve according to claim 1-5, which is characterized in that first return unit
(510) and second return unit (610) is all made of spring.
10. hydraulic control level pressure backwash valve according to claim 1-5, which is characterized in that further include top connection
(100) and lower contact (200)；
One end of the outer cylinder (300) and the seal pipe (400) the two is tightly connected with the top connection (100), another
End is tightly connected with the lower contact (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508441.5A CN110107256A (en) | 2019-06-12 | 2019-06-12 | Hydraulic control level pressure backwash valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910508441.5A CN110107256A (en) | 2019-06-12 | 2019-06-12 | Hydraulic control level pressure backwash valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110107256A true CN110107256A (en) | 2019-08-09 |
Family
ID=67494780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910508441.5A Withdrawn CN110107256A (en) | 2019-06-12 | 2019-06-12 | Hydraulic control level pressure backwash valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110107256A (en) |
Citations (7)
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|---|---|---|---|---|
| US5413180A (en) * | 1991-08-12 | 1995-05-09 | Halliburton Company | One trip backwash/sand control system with extendable washpipe isolation |
| US20030089222A1 (en) * | 2000-05-31 | 2003-05-15 | Hakan Olsson | Hydraulic percussion/pressing device |
| CN201265391Y (en) * | 2008-09-18 | 2009-07-01 | 吐哈石油勘探开发指挥部工程技术研究院 | High-pressure difference large-aperture gas-tight back-flushing valve for oil-gas field |
| CN201277007Y (en) * | 2008-10-22 | 2009-07-22 | 中国石油天然气股份有限公司 | Anti-sticking sliding sleeve backwash valve |
| CN104879099A (en) * | 2015-04-28 | 2015-09-02 | 中国海洋石油总公司 | Gravel packing pipe column and gravel packing method |
| CN108104748A (en) * | 2016-11-24 | 2018-06-01 | 盐城市华谊石油机械有限公司 | Backwash cycles valve |
| CN210049870U (en) * | 2019-06-12 | 2020-02-11 | 天津凯雷油田技术有限公司 | Hydraulic control constant pressure backwashing valve |
-
2019
- 2019-06-12 CN CN201910508441.5A patent/CN110107256A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5413180A (en) * | 1991-08-12 | 1995-05-09 | Halliburton Company | One trip backwash/sand control system with extendable washpipe isolation |
| US20030089222A1 (en) * | 2000-05-31 | 2003-05-15 | Hakan Olsson | Hydraulic percussion/pressing device |
| CN201265391Y (en) * | 2008-09-18 | 2009-07-01 | 吐哈石油勘探开发指挥部工程技术研究院 | High-pressure difference large-aperture gas-tight back-flushing valve for oil-gas field |
| CN201277007Y (en) * | 2008-10-22 | 2009-07-22 | 中国石油天然气股份有限公司 | Anti-sticking sliding sleeve backwash valve |
| CN104879099A (en) * | 2015-04-28 | 2015-09-02 | 中国海洋石油总公司 | Gravel packing pipe column and gravel packing method |
| CN108104748A (en) * | 2016-11-24 | 2018-06-01 | 盐城市华谊石油机械有限公司 | Backwash cycles valve |
| CN210049870U (en) * | 2019-06-12 | 2020-02-11 | 天津凯雷油田技术有限公司 | Hydraulic control constant pressure backwashing valve |
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Application publication date: 20190809 |